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261 Commits

Author SHA1 Message Date
rstoyanchev 8d16a50907 Efficient ETag parsing
Closes gh-33372
2024-08-14 07:53:23 +03:00
Juergen Hoeller ab161ca796 Upgrade to Netty 4.1.112 and Undertow 2.3.15 2024-08-13 19:34:50 +02:00
Juergen Hoeller b5377ee9cf Polishing 2024-08-13 19:34:30 +02:00
Stéphane Nicoll eff1ca92f0 Upgrade to Reactor 2022.0.22
Closes gh-33324
2024-08-13 17:24:20 +02:00
Sam Brannen 79c7bfdbad Introduce withAssignmentDisabled() option for SimpleEvaluationContext
To support additional use cases, this commit introduces a
withAssignmentDisabled() method in the Builder for
SimpleEvaluationContext.

See gh-33319
Closes gh-33321

(cherry picked from commit e74406afd0)
2024-08-13 17:49:44 +03:00
Riley Park f78b09fddf Fix incorrect weak ETag assertion
Closes gh-33376
2024-08-13 17:02:11 +03:00
Stéphane Nicoll b7ca746493 Sync GHA setup 2024-08-09 16:05:42 +02:00
Stéphane Nicoll 6c062399ea Start building against Reactor 2022.0.22 snapshots
See gh-33324
2024-08-07 09:55:31 +02:00
Sam Brannen e1ab306506 Enforce read-only semantics in SpEL's SimpleEvaluationContext
SimpleEvaluationContext.forReadOnlyDataBinding() documents that it
creates a SimpleEvaluationContext for read-only access to public
properties; however, prior to this commit write access was not disabled
for indexed structures when using the assignment operator, the
increment operator, or the decrement operator.

In order to better align with the documented contract for
forReadOnlyDataBinding(), this commit makes it possible to disable
assignment in general in order to enforce read-only semantics for
SpEL's SimpleEvaluationContext when created via the
forReadOnlyDataBinding() factory method. Specifically:

- This commit introduces a new isAssignmentEnabled() "default" method
  in the EvaluationContext API, which returns true by default.

- SimpleEvaluationContext overrides isAssignmentEnabled(), returning
  false if the context was created via the forReadOnlyDataBinding()
  factory method.

- The Assign, OpDec, and OpInc AST nodes -- representing the assignment
  (=), increment (++), and decrement (--) operators, respectively --
  now throw a SpelEvaluationException if assignment is disabled for the
  current EvaluationContext.

See gh-33319
Closes gh-33321

(cherry picked from commit 0127de5a7a)
2024-08-06 14:12:03 +03:00
Sam Brannen 2165b1651b Throw exception for failure to set property as index in SpEL
Prior to this commit, the Indexer in the Spring Expression Language
(SpEL) silently ignored a failure to set a property via the indexed
property syntax (['<property name>'] = <new value>) – for example, if
property write access was disabled in the EvaluationContext.

This commit addresses this issue by properly throwing a
SpelEvaluationException in PropertyIndexingValueRef.setValue(Object) if
the property could not be set.

See gh-33310
Closes gh-33311

(cherry picked from commit c57c2272a1)
2024-08-05 14:27:03 +03:00
Sam Brannen bf72e92145 Polishing 2024-08-05 14:25:17 +03:00
Sam Brannen 3e7372491c Support conversion from primitive array to Object[] in ConversionService
Prior to this commit, the ConversionService failed to convert a primitive
array (such as int[]) to an Object[] due to an error in the logic in
ArrayToArrayConverter.

This commit addresses this by augmenting the "can bypass conversion"
check in ArrayToArrayConverter to ensure that the supplied source object
is an instance of the target type (i.e., that the source array can be
cast to the target type array without conversion).

Closes gh-33212

(cherry picked from commit cb6a5baac5)
2024-08-05 10:23:29 +03:00
Sam Brannen e11a419cc3 Revert "Support single String argument for varargs invocations in SpEL"
This reverts commit d33f66d9b5.

See gh-33013
See gh-33189
2024-08-04 16:43:07 +03:00
Sam Brannen d33f66d9b5 Support single String argument for varargs invocations in SpEL
Prior to this commit, the Spring Expression Language (SpEL) incorrectly
split single String arguments by comma for Object... varargs method and
constructor invocations.

This commit addresses this by checking if the single argument type is
already "assignable" to the varargs component type instead of "equal"
to the varargs component type.

See gh-33013
Closes gh-33189
2024-07-26 17:46:19 +03:00
Stéphane Nicoll 8da2963644 Remove useless permissions on build-and-deploy-snapshot workflow
Closes gh-33239
2024-07-19 11:47:06 +02:00
Stéphane Nicoll 9a11c12740 Upgrade to Gradle 8.9
Closes gh-33215
2024-07-14 11:13:35 +02:00
Stéphane Nicoll 743c8f755b Add missing artifact properties for staging
This commit makes sure that docs artifacts have their attributes set
for staging as well. Previously they were not and deployment of Javadoc
did not occur.

Closes gh-33207
2024-07-12 08:57:19 +02:00
Stéphane Nicoll 0376ebeaf3 Remove concourse configuration now that CI is using GitHub Actions 2024-07-11 16:58:01 +02:00
Stéphane Nicoll a2a793e324 Release from GitHub Actions
Closes gh-33201
2024-07-11 16:54:40 +02:00
Juergen Hoeller fd7e7633d4 Polishing 2024-07-10 15:45:02 +02:00
Stéphane Nicoll be7029c35d Retain previous factory method in case of nested invocation with AOT
This commit harmonizes the invocation of a bean supplier with what
SimpleInstantiationStrategy does. Previously, the current factory method
was set to `null` once the invocation completes. This did not take
into account recursive scenarios where an instance supplier triggers
another instance supplier.

For consistency, the thread local is removed now if we attempt to set
the current method to null. SimpleInstantiationStrategy itself uses
the shortcut to align the code as much as possible.

Closes gh-33185
2024-07-10 12:40:24 +02:00
Juergen Hoeller 84efba682d Upgrade to Groovy 4.0.22, Jetty 11.0.22, Undertow 2.3.14
Includes downgrade to Awaitility 4.2.0 (aligned with 6.1.x branch)
2024-07-08 23:25:34 +02:00
Stéphane Nicoll e66be91005 Backport "Harmonize CI configuration"
This commit applies the harmonization changes in eacfd77 whilst keeping
the doc attributes specific changes to 6.0.x
2024-07-05 10:05:04 +02:00
Stéphane Nicoll c7fd5c9c34 Upgrade to Gradle 8.8
Closes gh-33147
2024-07-04 10:31:50 +02:00
Juergen Hoeller 09123def57 Detect ajc markers in superclasses as well (for weaving check)
Closes gh-33113

(cherry picked from commit 100da83913)
2024-07-03 17:12:08 +02:00
Juergen Hoeller 069d0819dd Apply fallback resolution for non-hierarchical URIs such as "file:."
Includes meaningful exception message for file system resolution.

Closes gh-33124

(cherry picked from commit daea3f0eae)
2024-07-03 16:43:14 +02:00
Brian Clozel a352d884c9 Re-enable async dispatches in Observation Filter
Prior to this commit, the fix for gh-32730 disabled the involvment of
the osbervation filter for async dispatches. Instead of relying on ASYNC
dispatches to close the observation for async requests, this is now
using an async listener instead: async dispatches are not guaranteed to
happen once the async request is handled.

This change caused another side-effect: because async dispatches are not
considered anymore by this filter, the observation scope is not
reinstated for async dispatches. For example, `ResponseBodyAdvice`
implementations do not have the observation scope opened during their
execution.

This commit re-enables async dispatches for this filter, but ensures
that observations are not closed during such dispatches as this will be
done by the async listener.

Fixes gh-33128
2024-07-01 11:49:42 +02:00
Stéphane Nicoll 3498a35377 Fix name of GitHub actions bot
See gh-gh-33077
2024-06-21 14:15:58 +02:00
Stéphane Nicoll 06fc5bc3ea Exclude GitHub Actions bot from changelog
Closes gh-33077
2024-06-20 14:17:02 +02:00
Brian Clozel f59b56c4c9 Use Sonatype S01 token in release pipeline 2024-06-18 19:28:28 +02:00
Juergen Hoeller 5a83fc8f86 Polishing 2024-06-17 19:07:04 +02:00
Juergen Hoeller db8d2d1626 Backported test for @Autowired @Bean method on configuration subclass
See gh-33030
2024-06-17 19:06:49 +02:00
Juergen Hoeller 12949becfc Correct and consistent event class names in constructor javadoc
Closes gh-33032

(cherry picked from commit e79a9a5bff)
2024-06-17 18:58:20 +02:00
Stéphane Nicoll debf571722 Fix typo
Closes gh-33054
2024-06-17 13:39:44 +02:00
github-actions[bot] f87b1bd6ce Update Antora Spring UI to v0.4.16 2024-06-17 10:06:47 +00:00
Stéphane Nicoll e17afed0fe Fix property name in Container Extension Points section
Closes gh-33038
2024-06-16 16:49:18 +02:00
Juergen Hoeller 77964374f9 Do not attempt to load pre-enhanced class for reloadable classes
Closes gh-33024

(cherry picked from commit 089e4e69f1)
2024-06-14 22:12:11 +02:00
Stéphane Nicoll 67686d776e Fix invalid character in Javadoc of BeanFactory 2024-06-13 14:10:00 +02:00
Spring Builds 2d83fca571 Next development version (v6.0.23-SNAPSHOT) 2024-06-13 09:24:34 +00:00
Juergen Hoeller f285df692c Upgrade to SLF4J 2.0.13, JRuby 9.4.7, Awaitility 4.2.1 2024-06-12 14:42:49 +02:00
Juergen Hoeller b9eeee8341 Polishing 2024-06-12 13:59:33 +02:00
Juergen Hoeller df1f4812aa Upgrade to Netty 4.1.111 2024-06-12 13:58:57 +02:00
Juergen Hoeller 230848c8e5 Upgrade to spring-javaformat-checkstyle 0.0.42 2024-06-12 13:58:27 +02:00
Stéphane Nicoll eda868792a Upgrade to Reactor 2022.0.20
Closes gh-33008
2024-06-11 14:35:56 +02:00
Brian Clozel 76604db8da Stop observations for async requests in Servlet filter
Prior to this commit, the `ServerHttpObservationFilter` would support
async dispatches and would do the following:

1. start the observation
2. call the filter chain
3. if async has started, do nothing
4. if not in async mode, stop the observation

This behavior would effectively rely on Async implementations to
complete and dispatch the request back to the container for an async
dispatch. This is what Spring web frameworks do and guarantee.

Some implementations complete the async request but do not dispatch
back; as a result, observations could leak as they are never stopped.

This commit changes the support of async requests. The filter now
opts-out of async dispatches - the filter will not be called for those
anymore. Instead, if the application started async mode during the
initial container dispatch, the filter will register an AsyncListener to
be notified of the outcome of the async handling.

Fixes gh-32986
2024-06-07 19:00:26 +02:00
Sébastien Deleuze 38b7209dc5 Polishing
See gh-32984
2024-06-07 13:44:30 +02:00
Sébastien Deleuze df0764db5d Remove outdated copyright from index.adoc
Closes gh-32984
2024-06-07 13:38:25 +02:00
Sébastien Deleuze 1e2c4635a3 Exclude node_modules from NoHttp checks
Closes gh-32981
2024-06-07 11:49:43 +02:00
Juergen Hoeller 628b0504ec Skip ajc-compiled aspects for ajc-compiled target classes
Includes defensive ignoring of incompatible aspect types.

Closes gh-32970

(cherry picked from commit 0ea96b4806)
2024-06-06 21:01:42 +02:00
Juergen Hoeller 8b589db028 Avoid NoSuchMethodException for annotation attribute checks
Closes gh-32921

(cherry picked from commit b08883b65c)
2024-06-03 12:51:47 +02:00
Sam Brannen aed1d5f762 Support compilation of map indexing with primitive in SpEL
Prior to this commit, the Spring Expression Language (SpEL) failed to
compile an expression that indexed into a Map using a primitive literal
(boolean, int, long, float, or double).

This commit adds support for compilation of such expressions by
ensuring that primitive literals are boxed into their corresponding
wrapper types in the compiled bytecode.

Closes gh-32903

(cherry picked from commit e9de426eb5)
2024-05-28 10:39:54 +02:00
Sam Brannen 079d53c8d6 Support compilation of array and list indexing with Integer in SpEL
Prior to this commit, the Spring Expression Language (SpEL) failed to
compile an expression that indexed into an array or list using an
Integer.

This commit adds support for compilation of such expressions by
ensuring that an Integer is unboxed into an int in the compiled
bytecode.

See gh-32694
Closes gh-32908

(cherry picked from commit cda577d1aa)
2024-05-27 17:28:54 +02:00
Juergen Hoeller 206a89017c Test detection of original generic method for CGLIB bridge method
See gh-32888
2024-05-24 12:29:31 +02:00
Juergen Hoeller 8d1bf9607b Polishing
(cherry picked from commit 6c08d93992)
2024-05-23 17:12:22 +02:00
Juergen Hoeller e12440a7af Defensive handling of incompatible advice methods
This covers AspectJ transaction and caching aspects when encountered by Spring AOP.

Closes gh-32882
See gh-32793

(cherry picked from commit 6d7cd9c7dc)
2024-05-23 17:12:18 +02:00
Spring Builds 093e6a8e8d Next development version (v6.0.22-SNAPSHOT) 2024-05-22 16:07:26 +00:00
Stéphane Nicoll c993615f98 Remove outdated Javadoc links
Closes gh-32873
2024-05-22 14:49:07 +02:00
Rob Winch d068f5a4c6 Modernize Antora Build
- Use same playbook as docs-build
- Use Env Variables to cause partial build (same as docs-build)
- Use package.json so that dependencies can be updated with dependabot
2024-05-22 10:20:33 +02:00
Juergen Hoeller e73d68b0a8 Select most specific advice method in case of override
Closes gh-32865

(cherry picked from commit ea596aa211)
2024-05-22 10:07:31 +02:00
Juergen Hoeller 0ca47e5e03 Polishing 2024-05-21 18:24:04 +02:00
Juergen Hoeller 33d3496a16 Polishing
(cherry picked from commit 20dea0dae2)
2024-05-21 17:59:39 +02:00
Juergen Hoeller 84a5a8a61e Default fallback parsing for UTC without milliseconds
Closes gh-32856

(cherry picked from commit fee17e11ba)
2024-05-21 17:52:11 +02:00
Juergen Hoeller 2b8a1faeaa Polishing
(cherry picked from commit 65e1337d35)
2024-05-21 11:42:30 +02:00
Juergen Hoeller 4c9de3cbbd Avoid creation of SAXParserFactory for every read operation
Includes JAXBContext locking revision (avoiding synchronization) and consistent treatment of DocumentBuilderFactory (in terms of caching as well as locking).

Closes gh-32851

(cherry picked from commit a4c2f291d9)
2024-05-21 11:35:08 +02:00
Stéphane Nicoll a0f07af375 Avoid reader on empty content to be shared by multiple requests
This commit avoids several instances of MockHttpServletRequest to
have a common reader for empty content as closing it will have an
unwanted side effect on the others.

Closes gh-32848
2024-05-20 13:59:50 +02:00
Juergen Hoeller 97e12bd0e8 Defensively catch and log pointcut parsing exceptions
Closes gh-32838
See gh-32793

(cherry picked from commit 617833bec9)
2024-05-17 12:50:12 +02:00
Spring Builds c374c46cdc Next development version (v6.0.21-SNAPSHOT) 2024-05-16 08:24:45 +00:00
rstoyanchev ea208dc304 Polishing contribution
Closes gh-32799
2024-05-15 20:16:39 +01:00
Juergen Hoeller c8c95e360f Polishing (aligned with 6.1.x) 2024-05-15 14:31:48 +02:00
Juergen Hoeller 9fb36a5dcb Upgrade to Reactor 2022.0.19
Includes AspectJ 1.9.22.1, Mockito 5.12, plugin alignment with 6.1.x

Closes gh-32787
2024-05-14 22:45:33 +02:00
Juergen Hoeller 4caf6bc5b8 Polishing 2024-05-14 13:45:38 +02:00
Juergen Hoeller ee3e1591de Polishing 2024-05-14 13:03:35 +02:00
Juergen Hoeller e81c788274 Accept ajc-compiled @Aspect classes for Spring AOP proxy usage
AspectJExpressionPointcut leniently ignores unsupported expression.

Closes gh-32793
2024-05-14 13:03:29 +02:00
rstoyanchev 09f23a578b Update docs on HandlerInterceptor
Closes gh-32729
2024-05-13 12:10:52 +01:00
rstoyanchev 5288504ceb Use instance field for ProblemDetail in ErrorResponse's
Closes gh-32644
2024-05-13 12:10:52 +01:00
rstoyanchev 8b6a54c45f Update MockMvc section on Streaming in the docs
Closes gh-32687
2024-05-13 12:10:52 +01:00
Sam Brannen f3f3063091 Fix Dokka links to Spring Framework and Servlet APIs
This commit fixes links from Spring Framework's Dokka HTML to Javadoc
for Spring Framework and Servlet APIs by explicitly configuring the
`element-list` page as the `package-list` in the Dokka Gradle plugin.

Closes gh-32797

(cherry picked from commit 7536980be9)
2024-05-12 12:33:00 +02:00
Stéphane Nicoll c1f3e37acd Polish 2024-05-08 15:35:41 +02:00
Stéphane Nicoll 427a96befc Adapt docs deployment properties
This commit fixes the artifact properties we set for "framework-docs"
artifacts. These have a different name as of 6.1.x and were backported
as is.

Closes gh-32780
2024-05-08 15:21:47 +02:00
Juergen Hoeller 77951dc622 Consistent RuntimeHintsRegistrar signature (plus related polishing) 2024-05-07 15:43:17 +02:00
Juergen Hoeller 43dd22ba31 Polishing
(cherry picked from commit 05d9b52b19)
2024-05-06 20:28:41 +02:00
Juergen Hoeller dfe437ac88 Unwrap raw target Query instance in case of proxy mismatch
Closes gh-32766

(cherry picked from commit 59a125d06f)
2024-05-06 20:25:46 +02:00
Sam Brannen 9c775d2643 Fix compilation error in test 2024-05-03 12:40:14 +03:00
Sam Brannen 3b50b6ef94 Include repeatable annotation container in MergedAnnotations results
A bug has existed in Spring's MergedAnnotations support since it was
introduced in Spring Framework 5.2. Specifically, if the
MergedAnnotations API is used to search for annotations with "standard
repeatable annotation" support enabled (which is the default), it's
possible to search for a repeatable annotation but not for the
repeatable annotation's container annotation.

The reason is that MergedAnnotationFinder.process(Object, int, Object,
Annotation) does not process the container annotation and instead only
processes the "contained" annotations, which prevents a container
annotation from being included in search results.

In #29685, we fixed a bug that prevented the MergedAnnotations support
from recognizing an annotation as a container if the container
annotation declares attributes other than the required `value`
attribute. As a consequence of that bug fix, since Spring Framework
5.3.25, the MergedAnnotations infrastructure considers such an
annotation a container, and due to the aforementioned bug the container
is no longer processed, which results in a regression in behavior for
annotation searches for such a container annotation.

This commit addresses the original bug as well as the regression by
processing container annotations in addition to the contained
repeatable annotations.

See gh-29685
Closes gh-32731

(cherry picked from commit 4baad16437)
2024-05-03 12:19:27 +03:00
Juergen Hoeller 9a31f3b5a5 Consistently propagate ApplicationStartup to BeanFactory
Closes gh-32747

(cherry picked from commit 25cedcfb99)
2024-05-01 18:11:55 +02:00
Juergen Hoeller b11d118376 Upgrade to Groovy 4.0.21, Netty 4.1.109, Undertow 2.3.13 2024-05-01 15:56:28 +02:00
Juergen Hoeller 0931769822 Polishing 2024-05-01 15:49:14 +02:00
Juergen Hoeller f7b7e29fd7 Ignore non-String keys in PropertiesPropertySource.getPropertyNames()
Closes gh-32742

(cherry picked from commit 610626aec6)
2024-05-01 15:45:21 +02:00
Brian Clozel 08a63a4180 Fix build warnings
See gh-32726
2024-04-30 19:09:44 +02:00
Arjen Poutsma 4e3b834310 Fix guard against multiple subscriptions
This commit changes the guard against multiple subscriptions, as the
previously used doOnSubscribe hook could not function as guard in
certain scenarios.

See gh-32727
Closes gh-32732
2024-04-30 16:20:20 +02:00
Brian Clozel fb67f97a41 Upgrade to gradle-enterprise-conventions 0.0.17
Closes gh-32726
2024-04-29 13:16:15 +02:00
Stéphane Nicoll cafb5cfbbe Refine preDetermineBeanTypes algorithm
This commit refines the preDetermineBeanTypes algorithm that AOT uses
to approximate the order of preInstantiateSingletons more closely.

Previously, the algorithm assumed that all beans where non-lazy
singletons in terms of initialization order, which led to inconsistent
order in CGLIB proxy generation.

We now explicitly park lazy beans so that their types are determined
during a second phase, matching the order of regular initialization
order.

Closes gh-32701

Co-authored-by: Juergen Hoeller <juergen.hoeller@broadcom.com>
2024-04-24 11:09:44 +02:00
Juergen Hoeller 9d2c6f80b8 Polishing 2024-04-23 16:25:24 +02:00
Juergen Hoeller d9330bcac7 Skip close lock if acquired by other thread already
Closes gh-32445

(cherry picked from commit d151931f86)
2024-04-23 16:11:16 +02:00
Stéphane Nicoll 1fb179b057 Relax scope of DataIntegrityViolationException
This commit updates the Javadoc of DataIntegrityViolationException to
broaden its scope as it was too specific before.

Closes gh-32686
2024-04-22 14:53:06 +02:00
Juergen Hoeller 5c9f364352 Polishing
(cherry picked from commit ec1f5ca600)
2024-04-22 14:07:51 +02:00
Juergen Hoeller 55f9581743 Try early initialization for all user-declared methods (including interfaces)
Closes gh-32682

(cherry picked from commit 62efdfb89c)
2024-04-22 13:51:15 +02:00
Stéphane Nicoll 190397d5e0 Upgrade to Java 17.0.11 2024-04-22 12:12:11 +02:00
Juergen Hoeller 94097fb112 Polishing (aligned with 6.1.x) 2024-04-18 12:46:55 +02:00
yhao3 e4ab2aa775 Update links to HttpOnly documentation at OWASP in ResponseCookie
See gh-32663
Closes gh-32667

(cherry picked from commit 7f27ba3902)
2024-04-18 12:00:10 +02:00
Simon Baslé 40bf550d56 Ensure multipart data is deleted in WebFlux when connection terminates
Before this change temporary files would not consistently be deleted
when the connection which uploads the multipart files closes naturally.

This change uses the usingWhen Reactor operator to ensure that the
termination of the connection doesn't prevent individual file parts
from being deleted due to a cancellation signal.

See gh-31217
Closes gh-32638
2024-04-15 14:22:42 +02:00
Spring Builds f3bdce455e Next development version (v6.0.20-SNAPSHOT) 2024-04-11 07:56:46 +00:00
Brian Clozel 402246df28 Refine UriComponentsBuilder parsing
This commit refines the expressions for the scheme, user info, host and
port parts of the URL in UriComponentsBuilder to better conform to
RFC 3986.

Fixes gh-32617
2024-04-11 08:50:23 +02:00
Stéphane Nicoll 88a68ddbd2 Upgrade to Reactor 2022.0.18
Closes gh-32593
2024-04-09 19:54:22 +02:00
Sam Brannen 7d178c6771 Detect bridge methods across ApplicationContexts in MethodIntrospector
Prior to this commit, MethodIntrospector failed to properly detect
bridge methods for subsequent invocations of selectMethods() with the
same targetType and MetadataLookup, if such subsequent invocations
occurred after the ApplicationContext had been refreshed.

The reason this occurs is due to the following.

- Class#getDeclaredMethods() always returns "child copies" of the
  underlying Method instances -- which means that `equals()` should be
  used instead of `==` whenever the compared Method instances can come
  from different sources (such as the static caches mentioned below).

- BridgeMethodResolver caches resolved bridge methods in a static cache
  -- which is never cleared.

- ReflectionUtils caches declared methods in a static cache
  -- which gets cleared when an ApplicationContext is refreshed.

Consequently, if you attempt to load an ApplicationContext twice in the
same ClassLoader, the second attempt uses the existing, populated cache
for bridged methods but a cleared, empty cache for declared methods.
This results in new invocations of Class#getDeclaredMethods(), and
identity checks with `==` then fail to detect equivalent bridge methods.

This commit addresses this by additionally comparing bridge methods
using `equals()` in MethodIntrospector.selectMethods().

Note that the `==` checks remain in place as an optimization for when
`equals()` is unnecessary.

Closes gh-32586

(cherry picked from commit e702733c7b)
2024-04-09 19:05:53 +02:00
Juergen Hoeller ba776d7201 Log column type for limited support message in getResultSetValue
Closes gh-32601

(cherry picked from commit c5590ae9e6)
2024-04-09 16:20:51 +02:00
Juergen Hoeller aba5f421fc Remove accidental backport of 6.1 class 2024-04-08 23:51:13 +02:00
Juergen Hoeller 2bac1629e6 Upgrade to Groovy 4.0.20, Netty 4.1.108, OpenPDF 1.3.43 2024-04-08 23:26:19 +02:00
Juergen Hoeller 9412d782ce Revised tests for generic FactoryBean type matching (backported)
See gh-32489
2024-04-08 23:00:33 +02:00
Juergen Hoeller a0bd13ceb1 Do not extract FactoryBean generic in case of targetType mismatch
Closes gh-32489
2024-04-08 10:16:48 +02:00
Stéphane Nicoll 46a0821205 Stop linking to Websphere's Javadoc
Closes gh-32582
2024-04-05 15:58:42 +02:00
Stéphane Nicoll 2c531344c6 Upgrade to Gradle 8.7
Closes gh-32567
2024-04-02 18:02:34 +02:00
Stéphane Nicoll 6610ee360e Upgrade actions that use deprecated features 2024-03-20 10:35:46 +01:00
Minsung Oh afde96c540 Fix link to vavr in the reference guide
Closes gh-32495
2024-03-20 10:03:29 +01:00
Sam Brannen da799bc519 Wrap InvalidMimeTypeException in HttpMediaTypeNotAcceptableException
The fix for #31254 resulted in an InvalidMimeTypeException being thrown
by MimeTypeUtils.sortBySpecificity() instead of an
IllegalArgumentException. However, InvalidMimeTypeException extends
IllegalArgumentException. Consequently, the change from
IllegalArgumentException to InvalidMimeTypeException did not result in
the desired effect in HeaderContentNegotiationStrategy.

HeaderContentNegotiationStrategy.resolveMediaTypes() still allows the
InvalidMimeTypeException to propagate as-is without wrapping it in an
HttpMediaTypeNotAcceptableException.

To address this issue, this commit catches InvalidMediaTypeException
and InvalidMimeTypeException in HeaderContentNegotiationStrategy and
wraps the exception in an HttpMediaTypeNotAcceptableException.

See gh-31254
See gh-31769
Closes gh-32483

(cherry picked from commit ef02f0bad8)
2024-03-19 15:55:15 +01:00
Sam Brannen 755968fd2c Polishing
(cherry picked from commit 836a0b3a40)
2024-03-19 15:55:08 +01:00
Juergen Hoeller eea00628f9 Polishing 2024-03-18 16:22:03 +01:00
Juergen Hoeller 8d745462b4 Propagate JMS IllegalStateException from commit/rollbackIfNecessary
Closes gh-32473

(cherry picked from commit cd7ba1835c)
2024-03-18 16:13:55 +01:00
Sam Brannen ed6c25fb6e Avoid unnecessary Annotation array cloning in TypeDescriptor
Closes gh-32476

(cherry picked from commit 42a4f28962)
2024-03-18 15:18:43 +01:00
Juergen Hoeller 8460a2d285 Restore original toString representation (revert accidental backport)
See gh-32405
2024-03-17 20:43:07 +01:00
Juergen Hoeller c3d186b4d0 Remove superfluous @NonNull declarations 2024-03-16 14:23:12 +01:00
Juergen Hoeller f8926d6a66 Avoid cloning empty Annotation array in TypeDescriptor (backport)
Closes gh-32405
2024-03-16 14:23:06 +01:00
Juergen Hoeller 19b21b15c1 Polishing 2024-03-15 21:22:49 +01:00
Juergen Hoeller 547425275c Consistently apply TaskDecorator to ManagedExecutorService as well
Closes gh-32455
2024-03-15 21:17:46 +01:00
Stéphane Nicoll 658194c155 Harmonize Concourse configuration 2024-03-15 09:15:24 +01:00
Stéphane Nicoll 769f73ebf1 Polish "Move CI to GitHub Actions"
See gh-32447
2024-03-15 09:14:22 +01:00
Stéphane Nicoll 80809bbc14 Move CI to GitHub Actions
Closes gh-32447
2024-03-15 09:00:28 +01:00
Spring Builds 6d323d710a Next development version (v6.0.19-SNAPSHOT) 2024-03-14 09:30:16 +00:00
rstoyanchev f2fd2f1226 Extract reusable checkSchemeAndPort method
Closes gh-32440
2024-03-14 08:48:42 +00:00
Juergen Hoeller 072ebb6ffc Additional unit tests for operations on empty UriTemplate
See gh-32432

(cherry picked from commit 54a6d89da7)
2024-03-13 18:18:52 +01:00
Kasper Bisgaard 08e7f7efa4 Allow UriTemplate to be built with an empty template
Closes gh-32437
2024-03-13 17:32:48 +01:00
Juergen Hoeller b1fafbf7e1 Upgrade to Reactor 2022.0.17
Includes Groovy 4.0.19, OpenPDF 1.3.42, Mockito 5.11

Closes gh-32421
2024-03-12 20:26:44 +01:00
Juergen Hoeller a3647a8c5e Polishing
(cherry picked from commit 723c94e5ac)
2024-03-12 20:26:24 +01:00
ZeroCyan 5c8d9cd0b2 Fix order of sections in Validation chapter of reference manual
Closes gh-32408
2024-03-10 17:31:30 +01:00
Juergen Hoeller 40d5196243 Polishing 2024-03-08 19:40:45 +01:00
Brian Clozel ec2c9b5d0e Set error on observation in WebClient instrumentation
Prior to this commit, error signals flowing from the client response
publisher in `WebClient` would be set on the `Observation.Context`. This
is enough for the observation convention to collect data about the error
but observation handlers are not notified of this error.

This commit sets the error instead on the observation directly to fix
this issue.

Fixes gh-32399
2024-03-08 11:36:20 +01:00
rstoyanchev 36539bdaa9 Use wrapped response in HandlerFunctionAdapter
webmvc.fn now also uses the StandardServletAsyncWebRequest wrapped response
to enforce lifecycle rules from Servlet spec (section 2.3.3.4).

See gh-32341
2024-03-07 14:51:01 +00:00
rstoyanchev 67ba7dd1da DisconnectedClientHelper recognizes AsyncRequestNotUsableException
See gh-32341
2024-03-06 18:20:31 +00:00
rstoyanchev 7b3fcf2647 Fix Javadoc error 2024-03-05 13:06:12 +00:00
rstoyanchev fd76c33589 Fix Javadoc error 2024-03-05 12:40:32 +00:00
rstoyanchev 1a7a6f421f Backport tests for wrapping of response for async requests
This is a backport of commits 4b96cd and ef0717.

Closes gh-32341
2024-03-05 12:03:48 +00:00
Juergen Hoeller 9ac1feceb5 Restore ability to return original method for proxy-derived method
Closes gh-32365
2024-03-04 23:32:27 +01:00
Juergen Hoeller 7029042e44 Polishing
(cherry picked from commit e9110c0729)
2024-03-04 23:31:51 +01:00
rstoyanchev 1a5661d426 Improve concurrent handling of result in WebAsyncManager
1. Use state transitions
2. Increase synchronized scope in setConcurrentResultAndDispatch

See gh-32341
2024-03-03 20:32:00 +00:00
rstoyanchev b208c63414 Add state and response wrapping to StandardServletAsyncWebRequest
The wrapped response prevents use after AsyncListener onError or completion
to ensure compliance with Servlet Spec 2.3.3.4.

The wrapped response is applied in RequestMappingHandlerAdapter.

The wrapped response raises AsyncRequestNotUsableException that is now
handled in DefaultHandlerExceptionResolver.

See gh-32341
2024-03-03 20:31:45 +00:00
rstoyanchev 814c003b43 Align 5.3.x with 6.1.x
In preparation for a larger update, start by aligning with
6.1.x, which includes changes for gh-32042 and gh-30232.

See gh-32341
2024-02-29 17:46:18 +00:00
Juergen Hoeller 5c34e1d11a Upgrade to Undertow 2.3.12, OpenPDF 1.3.41, JRuby 9.4.6 2024-02-28 21:38:57 +01:00
Juergen Hoeller d57775bbb2 Polishing 2024-02-28 21:38:38 +01:00
Juergen Hoeller b598ad3f33 Polishing 2024-02-28 19:26:11 +01:00
Juergen Hoeller b44ef70bc3 Direct reference to PushBuilder API on Servlet 5.0 baseline
See gh-29435
2024-02-28 19:17:13 +01:00
Sam Brannen d1b3107398 Do not cache Content-Type in ContentCachingResponseWrapper
Based on feedback from several members of the community, we have
decided to revert the caching of the Content-Type header that was
introduced in ContentCachingResponseWrapper in 375e0e6827.

This commit therefore completely removes Content-Type caching in
ContentCachingResponseWrapper and updates the existing tests
accordingly.

To provide guards against future regressions in this area, this commit
also introduces explicit tests for the 6 ways to set the content length
in ContentCachingResponseWrapper and modifies a test in
ShallowEtagHeaderFilterTests to ensure that a Content-Type header set
directly on ContentCachingResponseWrapper is propagated to the
underlying response even if content caching is disabled for the
ShallowEtagHeaderFilter.

See gh-32039
See gh-32317
Closes gh-32321
2024-02-28 10:51:48 +01:00
Sam Brannen 629c560316 Polish ShallowEtagHeaderFilterTests 2024-02-28 10:49:13 +01:00
Sébastien Deleuze 7bf07ef393 Refine *HttpMessageConverter#getContentLength null safety
Closes gh-32333
2024-02-27 15:48:36 +01:00
Sam Brannen ca602ef874 Honor Content-[Type|Length] headers from wrapped response again
Commit 375e0e6827 introduced a regression in
ContentCachingResponseWrapper (CCRW). Specifically, CCRW no longer
honors Content-Type and Content-Length headers that have been set in
the wrapped response and now incorrectly returns null for those header
values if they have not been set directly in the CCRW.

This commit fixes this regression as follows.

- The Content-Type and Content-Length headers set in the wrapped
  response are honored in getContentType(), containsHeader(),
  getHeader(), and getHeaders() unless those headers have been set
  directly in the CCRW.

- In copyBodyToResponse(), the Content-Type in the wrapped response is
  only overridden if the Content-Type has been set directly in the CCRW.

Furthermore, prior to this commit, getHeaderNames() returned duplicates
for the Content-Type and Content-Length headers if they were set in the
wrapped response as well as in CCRW.

This commit fixes that by returning a unique set from getHeaderNames().

This commit also updates ContentCachingResponseWrapperTests to verify
the expected behavior for Content-Type and Content-Length headers that
are set in the wrapped response as well as in CCRW.

See gh-32039
See gh-32317
Closes gh-32321
2024-02-25 17:35:54 +01:00
Sam Brannen e9bf5f5569 Polish ContentCachingResponseWrapper[Tests] 2024-02-25 17:35:54 +01:00
Juergen Hoeller 9a6f636e17 Consistent nullability for internal field access 2024-02-24 08:31:56 +01:00
Sébastien Deleuze 7686f5467e Adapt Hibernate native support for HHH-17643
This commit adapts Hibernate native support to handle
the changes performed as part of HHH-17643 which impacts
Hibernate versions 6.4.3+ and 6.2.21+.

It ignores the BytecodeProvider services loaded by the
service loader feature in order to default to the
"no-op" provider with native.

gh-32314 is expected to remove the need for such
substitutions which are not great for maintainability
by design.

Closes gh-32312
2024-02-22 17:06:53 +01:00
Juergen Hoeller 429c477f6a Polishing 2024-02-22 16:59:53 +01:00
Juergen Hoeller 5187281b50 Polishing 2024-02-21 22:56:21 +01:00
Juergen Hoeller 24a4487050 Add test for cleanup after configuration class creation failure
See gh-23343
2024-02-21 22:47:23 +01:00
Juergen Hoeller 8fba4a448a Polishing 2024-02-16 22:41:50 +01:00
Spring Builds 8f286de773 Next development version (v6.0.18-SNAPSHOT) 2024-02-15 12:34:07 +00:00
Juergen Hoeller ee100cfba7 Upgrade to Mockito 5.10, Mutiny 1.10, Undertow 2.3.11 2024-02-15 10:49:54 +01:00
Juergen Hoeller aaf90f5a96 Upgrade to Reactor 2022.0.16
Includes SLF4J 2.0.12, Groovy 4.0.18, Jetty 11.0.20, Netty 4.1.107, OpenPDF 1.3.40
2024-02-15 10:28:18 +01:00
Simon Baslé 70be04ba81 Infer reflection hints for Jackson annotations builder attributes
This notably enables Jackson to reflectively call a user-provided
builder class and invoke its declared methods (setters and build) in
a native app.

See gh-32238
Closes gh-32257
2024-02-13 15:16:04 +01:00
Juergen Hoeller b976ee3f67 Consistent Lock field declaration (instead of ReentrantLock field type)
(cherry picked from commit b4153618a4)
2024-02-13 11:14:10 +01:00
rstoyanchev b11ff96652 Update user info pattern
Closes gh-32211
2024-02-13 07:14:12 +00:00
Arjen Poutsma 667e4e7531 Implement MatchableHandlerMapping in RouterFunctionMapping
See gh-32221
Closes gh-32222
2024-02-08 12:25:00 +01:00
Juergen Hoeller 5fd9fab0ce Polishing (backported from main) 2024-02-07 23:40:11 +01:00
Juergen Hoeller 95a8646309 Polishing 2024-02-06 17:06:05 +01:00
Juergen Hoeller 5434edd726 Avoid sendError call when response committed already (Tomcat 10.1.16)
Closes gh-32206

(cherry picked from commit 4ed337247c)
2024-02-06 16:48:15 +01:00
Brian Clozel 5f13ea95fb Polish
See gh-32197
2024-02-05 11:15:49 +01:00
Patrick Strawderman 74bb42b78f Optimize Map methods in ServletAttributesMap
ServletAttributesMap inherited default implementations of the size
and isEmpty methods from AbstractMap which delegates to the Set returned
by entrySet. ServletAttributesMap's entrySet method made this fairly
expensive, since it would copy the attributes to a List, then use a
Stream to build the Set. To avoid the cost, add implementations of
isEmpty / size that don't need to call entrySet at all.

Additionally, change entrySet to return a Set view that simply lazily
delegates to the underlying servlet request for iteration.

Closes gh-32197
2024-02-05 10:42:46 +01:00
Stéphane Nicoll 55717adf88 Upgrade to Gradle 8.6
Closes gh-32193
2024-02-03 11:36:40 +01:00
Juergen Hoeller 72835f10b9 Polishing 2024-02-01 14:58:13 +01:00
Stéphane Nicoll 125ebd029c Prevent AOT from failing with spring-orm without JPA
This commit improves PersistenceManagedTypesBeanRegistrationAotProcessor
so that it does not attempt to load JPA classes when checking for the
presence of a PersistenceManagedTypes bean. To make it more clear a
check on the presence for JPA has been added to prevent the nested
classes to be loaded regardless of the presence of the bean.

Closes gh-32160
2024-01-30 15:42:19 +01:00
Juergen Hoeller d8d4fa0e24 Polishing 2024-01-29 16:42:32 +01:00
Juergen Hoeller bfd3b3ad88 Eagerly initialize ZERO_NANOS constant 2024-01-29 16:21:35 +01:00
Juergen Hoeller 0909161ba1 Polishing 2024-01-29 14:19:48 +01:00
Juergen Hoeller 4910c217dc Explicit documentation note on cron-vs-quartz parsing convention
Closes gh-32128

(cherry picked from commit a738e4d5fd)
2024-01-29 13:58:39 +01:00
Sébastien Deleuze f262046ef9 Update basics.adoc
Closes gh-32151
2024-01-29 09:15:17 +01:00
Juergen Hoeller d50d4a9092 Polishing 2024-01-24 22:44:29 +01:00
Juergen Hoeller b06305e64f Compare qualifier value arrays with equality semantics
Closes gh-32106

(cherry picked from commit c5a75219ce)
2024-01-24 22:39:24 +01:00
Arjen Poutsma c749a14326 Guard against multiple body subscriptions
Before this commit, the JDK and Jetty connectors do not have any
safeguards against multiple body subscriptions. Such as check has now
been added.

See gh-32100
Closes gh-32102
2024-01-24 13:42:25 +01:00
Juergen Hoeller 3817936ca5 Declare current observation context as available since 6.0.15
See gh-31609
See gh-31646
2024-01-24 12:35:30 +01:00
Juergen Hoeller 9bd2be80b9 Declare allowPrivateNetwork as available since 5.3.32
See gh-28546
See gh-31974
2024-01-24 12:34:53 +01:00
Juergen Hoeller c6e9cd0c62 Polishing 2024-01-24 11:59:15 +01:00
Juergen Hoeller e2a5cfb459 Consistent nullability for concurrent result
(cherry picked from commit b92877990d)
2024-01-24 11:59:10 +01:00
Brian Clozel b484ab116f Record errors thrown by custom handler in RestTemplate observations
Prior to this commit, the `RestTemplate` observation instrumentation
would only record `RestClientException` and `IOException` as errors in
the observation. Other types of errors can be thrown by custom
components, such as `ResponseErrorHandler` and in this case they aren't
recorded with the observation.
Also, the current instrumentation does not create any observation scope
around the execution. While this would have a limited benefit as no
application code is executed there, developers could set up custom
components (such as, again, `ResponseErrorHandler`) that could use
contextual logging with trace ids.

This commit ensures that all `Throwable` are recorded as errors with the
observations and that an observation `Scope` is created around the
execution of the client exchange.

Fixes gh-32063
2024-01-22 11:28:07 +01:00
Juergen Hoeller c668473186 Polishing 2024-01-19 17:18:28 +01:00
Arjen Poutsma 38595c6a99 Handle Content-Length in ShallowEtagHeaderFilter more robustly
This commit ensures that setting the Content-Length through
setHeader("Content-Length", x") has the same effect as calling
setContentLength in the ShallowEtagHeaderFilter. It also filters out
Content-Type headers similarly to Content-Length.

See gh-32039
Closes gh-32050
2024-01-18 15:46:14 +01:00
Brian Clozel d756c2b128 Remove JDK 20 variant from CI build. 2024-01-17 21:26:37 +01:00
Brian Clozel 3be4322f71 Upgrade CI image to JDK 17.0.10+13 2024-01-17 21:21:55 +01:00
Brian Clozel 328e444db3 Upgrade CI image to Ubuntu Jammy 20240111 2024-01-17 21:19:27 +01:00
Stéphane Nicoll 94bdd4380f Fix incorrect assertions using json path
Closes gh-32040
2024-01-16 11:02:36 +01:00
rstoyanchev 3f9d479583 Double-checked lock in ChannelSendOperator#request
Closes gh-31865
2024-01-12 17:16:23 +00:00
Sébastien Deleuze 338922f03d Find destroy methods in superclass interfaces
Related tests will be added in
https://github.com/spring-projects/spring-aot-smoke-tests.

Closes gh-32017
2024-01-12 12:28:07 +01:00
Spring Builds fad857e06a Next development version (v6.0.17-SNAPSHOT) 2024-01-11 10:33:22 +00:00
Juergen Hoeller b8395a2321 Upgrade to spring-javaformat-checkstyle 0.0.41 2024-01-10 17:10:23 +01:00
rstoyanchev 6df8be8be3 Exclude query from URI in WebClient checkpoints
Closes gh-31992
2024-01-10 12:33:28 +00:00
Juergen Hoeller 4a599d0b22 Upgrade to Reactor 2022.0.15
Includes SLF4J 2.0.11, Groovy 4.0.17, Jetty 11.0.19, Netty 4.1.104, Apache HttpClient 5.2.3, POI 5.2.5, OpenPDF 1.3.36, Checkstyle 10.12.7

Closes gh-31997
2024-01-10 11:09:11 +01:00
rstoyanchev a1463c2bf2 Do not set exception attribute if response body is set
ResponseEntityExceptionHandler should not set the exception attribute
when there is a response body, and the response is fully handled.

Closes gh-31541
2024-01-09 14:54:48 +00:00
Sébastien Deleuze 23eff5c650 Update ContentRequestMatchers#multipartData Javadoc
This commit updates ContentRequestMatchers#multipartData
Javadoc to mention Tomcat fork of Commons FileUpload library
instead of the original variant.

It also adds a similar note to
ContentRequestMatchers#multipartDataContains.

Closes gh-31989

(Backport of 598c972a78)
2024-01-09 14:14:45 +01:00
Juergen Hoeller c44bb29aa5 Polishing 2024-01-09 12:56:52 +01:00
Arjen Poutsma 0c22866b72 Ensure correct capacity in DefaultDataBuffer
See gh-31873
Closes gh-31979
2024-01-09 10:40:41 +01:00
Sébastien Deleuze 0c6957e395 Polishing
See gh-31975
2024-01-08 12:26:03 +01:00
Sébastien Deleuze 8d51fc0444 Add CORS support for Private Network Access
This commit adds CORS support for Private Network Access
by adding an Access-Control-Allow-Private-Network response
header when the preflight request is sent with an
Access-Control-Request-Private-Network header and that
Private Network Access has been enabled in the CORS
configuration.

See https://developer.chrome.com/blog/private-network-access-preflight/
for more details.

Closes gh-31975

(cherry picked from commit 318d460256)
2024-01-08 11:23:03 +01:00
Juergen Hoeller bad01011da Avoid getMostSpecificMethod resolution for non-annotated methods
This is aligned with AutowiredAnnotationBeanPostProcessor now.

Closes gh-31967

(cherry picked from commit 9912a52bb8)
2024-01-07 16:35:12 +01:00
Juergen Hoeller 867a199507 Propagate arguments for dynamic prototype-scoped advice
Closes gh-28407

(cherry picked from commit 43107e7eb1)
2024-01-07 00:15:43 +01:00
Juergen Hoeller 1b4a4ac51f Polishing 2024-01-06 23:21:57 +01:00
Juergen Hoeller dd0d26b4ba Refine exception handling for type not present versus access exception
Includes TypeVariable bypass for reflection-free annotation retrieval.
Includes info log message for annotation attribute retrieval failure.

Closes gh-27182

(cherry picked from commit 70247c4a94)
2024-01-06 23:10:30 +01:00
Juergen Hoeller d074f660a1 Default time zone resolution from scheduler-wide Clock
Closes gh-31948
2024-01-05 10:19:03 +01:00
Stéphane Nicoll 1b8baffbd7 Upgrade CI to Ubuntu Jammy 20231211.1 2024-01-05 09:43:01 +01:00
Brian Clozel 56c63c779f Fix HandlerMappingIntrospector uri matching
Prior to this commit, the `HandlerMappingIntrospector` would comparea
request with a cached request by using `String#matches` on their String
URI. This could lead to `PatternSyntaxException` exceptions at runtime
if the request URI contained pattern characters.

This commit fixes this typo to use `String#equals` instead.

Fixes gh-31946
2024-01-04 17:06:17 +01:00
Juergen Hoeller 198cf063fd Polishing 2023-12-30 11:45:34 +01:00
Yanming Zhou b1b6b544a2 Add missing @Test
See gh-31914
2023-12-28 11:41:18 +01:00
Brian Clozel 9d13ea290f Reject invalid forwarded requests in ForwardedHeaderFilter
Prior to this commit, the `ForwardedHeaderFilter` and the forwarded
header utils would throw `IllegalArgumentException` and
`IllegalStateException` when request headers are invalid and cannot be
parsed for Forwarded handling.

This commit aligns the behavior with the WebFlux counterpart by
rejecting such requests with HTTP 400 responses directly.

Fixes gh-31894
2023-12-22 17:51:27 +01:00
Sébastien Deleuze c9163b77df Add support for @Async Kotlin function returning Unit?
Closes gh-31891
2023-12-22 15:35:56 +01:00
Juergen Hoeller 033c8df53f Polishing 2023-12-22 12:54:16 +01:00
Arjen Poutsma b272f4e615 Correctly set capacity of remainder in DefaultDataBuffer::split
This commit ensures that the capacity of the remainder buffer after a
split operation is set directly on the field. Calling capacity(int)
caused a new buffer to be allocated.

See gh-31848
Closes gh-31859
2023-12-18 11:50:30 +01:00
Spring Builds bafff5079f Next development version (v6.0.16-SNAPSHOT) 2023-12-14 08:52:04 +00:00
Juergen Hoeller ccaecab500 Polishing 2023-12-14 08:32:08 +01:00
Sam Brannen 67e03105b5 Introduce test for XML replaced-method element without explicit arg-type
This commit introduces an integration test for the regression fixed in
the previous commit (76bc9cf325).

See gh-31826
Closes gh-31828

(cherry picked from commit 8d4deca2a6)
2023-12-13 15:12:29 +01:00
Juergen Hoeller 76bc9cf325 Prepare method overrides when bean class gets resolved
See gh-31826
See gh-31828

(cherry picked from commit cd64e6676c)
2023-12-13 15:11:29 +01:00
rstoyanchev db52c77cca Minor updates in HandlerMappingIntrospector
Required by Spring Security to complete work on
https://github.com/spring-projects/spring-security/issues/14128

The setCache and resetCache methods used from createCacheFilter are now
public. Generally they don't need to be used outside of the Filter if
only making checks against the current request. Spring Security, however,
makes additional checks against requests with alternative paths.
2023-12-12 20:22:29 +00:00
Sam Brannen 1e742aae34 Scan annotations on method in interface hierarchy only once
Prior to this commit, the AnnotationsScanner used in the
MergedAnnotations infrastructure found duplicate annotations on methods
within multi-level interface hierarchies.

This commit addresses this issue by scanning methods at a given level
in the interface hierarchy using ReflectionUtils#getDeclaredMethods
instead of Class#getMethods, since the latter includes public methods
declared in super-interfaces which will anyway be scanned when
processing super-interfaces recursively.

Closes gh-31803

(cherry picked from commit 75da9c3c47)
2023-12-12 18:39:38 +01:00
Sam Brannen 20dd585c93 Polish MergedAnnotation tests
(cherry picked from commit 952223dcf9)
2023-12-12 18:38:06 +01:00
Juergen Hoeller 707eb701dc Polishing 2023-12-12 14:02:02 +01:00
Juergen Hoeller 2c97996796 Upgrade to Reactor 2022.0.14
Includes Groovy 4.0.16 and Mockito 5.8

Closes gh-31815
2023-12-12 14:01:55 +01:00
rstoyanchev 3a068b807b Update link to stompjs library
Closes gh-28409
2023-12-12 12:32:21 +00:00
Stéphane Nicoll f54b19ff90 Start building against Reactor 2022.0.14 snapshots
See gh-31815
2023-12-11 15:07:32 +01:00
Stéphane Nicoll 494d2ab727 Remove .mailmap file
See gh-31740
2023-12-11 11:08:31 +01:00
Juergen Hoeller 627d9cf8be Polishing 2023-12-10 00:26:22 +01:00
Arjen Poutsma dd3a67c7ab Process tokens after each feed in Jackson2Tokenizer
This commit ensures that we process after each fed buffer in
Jackson2Tokenizer, instead of after all fed buffers.

See gh-31747
Closes gh-31772
2023-12-06 14:49:08 +01:00
Sam Brannen 85cc229063 Fix and polish Javadoc for MimeTypeUtils
(cherry picked from commit 1afea0b144)
2023-12-06 14:31:35 +01:00
Johnny Lim fa95f12be0 Fix condition for "Too many elements" in MimeTypeUtils.sortBySpecificity()
See gh-31254
See gh-31769
Closes gh-31773

(cherry picked from commit 7b95bd72f7)
2023-12-06 14:31:16 +01:00
Sam Brannen 035cc72fc8 Polishing 2023-12-06 12:40:49 +01:00
Arjen Poutsma 29a39b617e Support empty part in DefaultPartHttpMessageReader
This commit fixes a bug in DefaultPartHttpMessageReader's
MultipartParser, due to which the last token in a part window was not
properly indicated.

See gh-30953
Closes gh-31766
2023-12-06 12:21:28 +01:00
Sébastien Deleuze a1471a9266 Document @ModelAttribute usage with native images
Closes gh-31767
2023-12-06 12:18:42 +01:00
Sam Brannen 21793b4f93 Suppress warnings in Gradle build
(cherry picked from commit c05b4ce776)
2023-12-01 15:55:36 +01:00
Sam Brannen 2d255c4d5e Upgrade to Gradle 8.5
Closes gh-31734

(cherry picked from commit 3a53446a2b)
2023-12-01 15:54:40 +01:00
Juergen Hoeller 10391586d1 PathEditor considers single-letter URI scheme as NIO path candidate
Closes gh-29881

(cherry picked from commit c56c304536)
2023-11-30 14:16:37 +01:00
Brian Clozel edadc79835 Fix reactive HTTP server Observation instrumentation
Prior to this commit, regressions were introduced with gh-31417:

1. the observation keyvalues would be inconsistent with the HTTP response
2. the observation scope would not cover all controller handlers, causing
  traceIds to be missing

The first issue is caused by the fact that in case of error signals, the
observation was stopped before the response was fully committed, which
means further processing could happen and update the response status.
This commit delays the stop event until the response is committed in
case of errors.

The second problem is caused by the change from a `contextWrite`
operator to using the `tap` operator with a `SignalListener`. The
observation was started in the `doOnSubscription` callback, which is too
late in some cases. If the WebFlux controller handler is synchronous
non-blocking, the execution of the handler is performed before the
subscription happens. This means that for those handlers, the
observation was not started, even if the current observation was
present in the reactor context. This commit changes the
`doOnSubscription` to `doFirst` to ensure that the observation is
started at the right time.

Fixes gh-31715
Fixes gh-31716
2023-11-29 14:55:57 +01:00
Stéphane Nicoll 3783d31c09 Quote name attribute if necessary
This commit updates MetadataNamingStrategy to quote an ObjectName
attribute value if necessary. For now, only the name attribute is
handled as it is usually a bean name, and we have no control over
its structure.

Closes gh-31708
2023-11-28 17:05:36 +01:00
Sam Brannen 87730f76b1 Include scroll() in SharedEntityManagerCreator's queryTerminatingMethods
This commit supports the scroll() and scroll(ScrollMode) methods from
Hibernate's Query API in SharedEntityManagerCreator's query-terminating
methods set.

See gh-31682
Closes gh-31683

(cherry picked from commit a15f472898)
2023-11-26 12:14:33 +01:00
Juergen Hoeller 6fae3e150e Consider generics in equals method (for ConversionService caching)
Closes gh-31672

(cherry picked from commit 710373d286)
2023-11-24 23:29:02 +01:00
Juergen Hoeller ad44e8ab0a Filter candidate methods by name first (for more efficient sorting)
Closes gh-28377

(cherry picked from commit 0599320bd8)
2023-11-24 23:28:59 +01:00
Juergen Hoeller aadf96ba92 Properly return loaded type even if identified as reloadable
Closes gh-31668

(cherry picked from commit 8921be18de)
2023-11-24 23:28:57 +01:00
Brian Clozel 2baf064d04 Add current observation context in ClientRequest
Prior to this commit, `ExchangeFilterFunction` could only get the
current observation from the reactor context. This is particularly
useful when such filters want to add KeyValues to the observation
context.

This commit makes this use case easier by adding the context of the
current observation as a request attribute. This also aligns the
behavior with other instrumentations.

Fixes gh-31646
2023-11-24 17:37:04 +01:00
Brian Clozel 6121e2f526 Remove API diff Gradle plugin configuration
We have not published API diffs for a while now so we should remove the
configuration entirely from our build.
2023-11-23 15:53:35 +01:00
Brian Clozel 8e33805d29 Fix ordering of releasing resources in JSON Encoder
Prior to this commit, the Jackson 2.x encoders, in case of encoding a
stream of data, would first release the `ByteArrayBuilder` and then the
`JsonGenerator`. This order is inconsistent with the single value
variant (see `o.s.h.codec.json.AbstractJackson2Encoder#encodeValue`) and
invalid since the `JsonGenerator` uses internally the
`ByteArrayBuilder`.

In case of a CSV Encoder, the codec can buffer data to write the column
names of the CSV file. Writing an empty Flux with this Encoder would not
fail but still log a NullPointerException ignored by the reactive
pipeline.

This commit fixes the order and avoid such issues at runtime.

Fixes gh-31656
2023-11-22 20:56:37 +01:00
rstoyanchev 1f19bb2311 Update STOMP WebSocket transport reference docs
Closes gh-31616
2023-11-22 15:32:49 +00:00
Juergen Hoeller 2784410cc6 Polishing 2023-11-22 13:01:03 +01:00
Juergen Hoeller f4ac323409 Test for mixed order across bean factory hierarchy
See gh-28374

(cherry picked from commit 48f3c08395)
2023-11-22 12:46:36 +01:00
rstoyanchev 6db00e63c7 WebSocketMessageBrokerStats implements SmartInitializingSingleton
Closes gh-26536
2023-11-21 17:58:32 +00:00
“7fantasy7” ed613e767a Skip buffer in StreamUtils#copy(String)
(cherry picked from commit 54f87f1ff7)
2023-11-20 21:30:01 +01:00
Juergen Hoeller 65781046cf Polishing
(cherry picked from commit fff50657d2)
2023-11-20 21:23:46 +01:00
Juergen Hoeller 0ee36095e7 Restore outdated local/remote-slsb attributes for declaration compatibility
Legacy EJB attributes are ignored since 6.0 due to being bound to a plain JndiObjectFactoryBean - but can still be declared now, e.g. when validating against the common versions of spring-jee.xsd out there.

Closes gh-31627

(cherry picked from commit 695559879e)
2023-11-20 21:23:42 +01:00
Stéphane Nicoll 0fc38117df Handle default package with AOT processing
Adding generated code in the default package is not supported as we
intend to import it, most probably from another package, and that is
not supported. While this situation is hard to replicate with Java,
Kotlin is unfortunately more lenient and users can end up in that
situation if they forget to add a package statement.

This commit checks for the presence of a valid package, and throws
a dedicated exception if necessary.

Closes gh-31629
2023-11-20 11:54:55 +01:00
Sam Brannen 86b8a70ce6 Ensure PathResourceResolvers log warnings for non-existent resources
Prior to this commit, the getResource() methods in PathResourceResolver
implementations allowed an exception thrown from Resource#getURL() to
propagate instead of logging a warning about the missing resource as
intended.

This commit modifies the getResource() methods in PathResourceResolver
implementations so that the log messages include the output of the
toString() implementations of the underlying resources instead of their
getURL() implementations, which may throw an exception.

Furthermore, logging the toString() output of resources aligns with the
existing output for "allowed locations" in the same log message.

Note that the toString() implementations could potentially also throw
exceptions, but that is considered less likely.

See gh-31623
Closes gh-31624

(cherry picked from commit 7d2ea7e7e1)
2023-11-20 11:50:51 +01:00
Spring Builds 4bf759d872 Next development version (v6.0.15-SNAPSHOT) 2023-11-16 14:07:29 +00:00
3903 changed files with 50556 additions and 113252 deletions
@@ -8,7 +8,7 @@
"@build.name": "${buildName}",
"@build.number": "${buildNumber}",
"path": {
"$nmatch": "org/springframework/framework-api/*"
"$nmatch": "org/springframework/framework-docs/*"
}
}
]
@@ -2,7 +2,7 @@ name: Build and Deploy Snapshot
on:
push:
branches:
- 6.1.x
- 6.0.x
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
jobs:
@@ -26,15 +26,16 @@ jobs:
uri: 'https://repo.spring.io'
username: ${{ secrets.ARTIFACTORY_USERNAME }}
password: ${{ secrets.ARTIFACTORY_PASSWORD }}
build-name: 'spring-framework-6.1.x'
build-name: 'spring-framework-6.0.x'
repository: 'libs-snapshot-local'
folder: 'deployment-repository'
signing-key: ${{ secrets.GPG_PRIVATE_KEY }}
signing-passphrase: ${{ secrets.GPG_PASSPHRASE }}
artifact-properties: |
/**/framework-api-*.zip::zip.name=spring-framework,zip.deployed=false
/**/framework-api-*-docs.zip::zip.type=docs
/**/framework-api-*-schema.zip::zip.type=schema
/**/framework-docs-*.zip::zip.name=spring-framework,zip.deployed=false
/**/framework-docs-*-docs.zip::zip.type=docs
/**/framework-docs-*-dist.zip::zip.type=dist
/**/framework-docs-*-schema.zip::zip.type=schema
- name: Send Notification
uses: ./.github/actions/send-notification
if: always()
+1 -6
View File
@@ -2,7 +2,7 @@ name: CI
on:
push:
branches:
- 6.1.x
- 6.0.x
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
jobs:
@@ -21,11 +21,6 @@ jobs:
toolchain: false
- version: 21
toolchain: true
- version: 22
toolchain: true
- version: 23
early-access: true
toolchain: true
exclude:
- os:
name: Linux
+5 -4
View File
@@ -2,7 +2,7 @@ name: Release
on:
push:
tags:
- v6.1.[0-9]+
- v6.0.[0-9]+
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
jobs:
@@ -31,9 +31,10 @@ jobs:
signing-key: ${{ secrets.GPG_PRIVATE_KEY }}
signing-passphrase: ${{ secrets.GPG_PASSPHRASE }}
artifact-properties: |
/**/framework-api-*.zip::zip.name=spring-framework,zip.deployed=false
/**/framework-api-*-docs.zip::zip.type=docs
/**/framework-api-*-schema.zip::zip.type=schema
/**/framework-docs-*.zip::zip.name=spring-framework,zip.deployed=false
/**/framework-docs-*-docs.zip::zip.type=docs
/**/framework-docs-*-dist.zip::zip.type=dist
/**/framework-docs-*-schema.zip::zip.type=schema
outputs:
version: ${{ steps.build-and-publish.outputs.version }}
verify:
+1 -1
View File
@@ -1,3 +1,3 @@
# Enable auto-env through the sdkman_auto_env config
# Add key=value pairs of SDKs to use below
java=17.0.12-librca
java=17.0.11-librca
+44
View File
@@ -0,0 +1,44 @@
= Contributor Code of Conduct
As contributors and maintainers of this project, and in the interest of fostering an open
and welcoming community, we pledge to respect all people who contribute through reporting
issues, posting feature requests, updating documentation, submitting pull requests or
patches, and other activities.
We are committed to making participation in this project a harassment-free experience for
everyone, regardless of level of experience, gender, gender identity and expression,
sexual orientation, disability, personal appearance, body size, race, ethnicity, age,
religion, or nationality.
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery
* Personal attacks
* Trolling or insulting/derogatory comments
* Public or private harassment
* Publishing other's private information, such as physical or electronic addresses,
without explicit permission
* Other unethical or unprofessional conduct
Project maintainers have the right and responsibility to remove, edit, or reject comments,
commits, code, wiki edits, issues, and other contributions that are not aligned to this
Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors
that they deem inappropriate, threatening, offensive, or harmful.
By adopting this Code of Conduct, project maintainers commit themselves to fairly and
consistently applying these principles to every aspect of managing this project. Project
maintainers who do not follow or enforce the Code of Conduct may be permanently removed
from the project team.
This Code of Conduct applies both within project spaces and in public spaces when an
individual is representing the project or its community.
Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by
contacting a project maintainer at spring-code-of-conduct@pivotal.io . All complaints will
be reviewed and investigated and will result in a response that is deemed necessary and
appropriate to the circumstances. Maintainers are obligated to maintain confidentiality
with regard to the reporter of an incident.
This Code of Conduct is adapted from the
https://contributor-covenant.org[Contributor Covenant], version 1.3.0, available at
https://contributor-covenant.org/version/1/3/0/[contributor-covenant.org/version/1/3/0/]
+7 -7
View File
@@ -18,7 +18,7 @@ First off, thank you for taking the time to contribute! :+1: :tada:
This project is governed by the [Spring Code of Conduct](CODE_OF_CONDUCT.adoc).
By participating you are expected to uphold this code.
Please report unacceptable behavior to spring-code-of-conduct@spring.io.
Please report unacceptable behavior to spring-code-of-conduct@pivotal.io.
### How to Contribute
@@ -123,13 +123,13 @@ define the source file coding standards we use along with some IDEA editor setti
### Reference Docs
The reference documentation is authored in [Asciidoctor](https://asciidoctor.org/) format
using [Antora](https://docs.antora.org/antora/latest/). The source files for the documentation
reside in the [framework-docs/modules/ROOT](framework-docs/modules/ROOT) directory. For
trivial changes, you may be able to browse, edit source files, and submit directly from GitHub.
The reference documentation is in the [framework-docs/src/docs/asciidoc](framework-docs/src/docs/asciidoc) directory, in
[Asciidoctor](https://asciidoctor.org/) format. For trivial changes, you may be able to browse,
edit source files, and submit directly from GitHub.
When making changes locally, execute `./gradlew antora` and then browse the results under
`framework-docs/build/site/index.html`.
When making changes locally, execute `./gradlew :framework-docs:asciidoctor` and then browse the result under
`framework-docs/build/docs/ref-docs/html5/index.html`.
Asciidoctor also supports live editing. For more details see
[AsciiDoc Tooling](https://docs.asciidoctor.org/asciidoctor/latest/tooling/).
+5 -5
View File
@@ -1,12 +1,12 @@
# <img src="framework-docs/src/docs/spring-framework.png" width="80" height="80"> Spring Framework [![Build Status](https://github.com/spring-projects/spring-framework/actions/workflows/build-and-deploy-snapshot.yml/badge.svg?branch=6.1.x)](https://github.com/spring-projects/spring-framework/actions/workflows/build-and-deploy-snapshot.yml?query=branch%3A6.1.x) [![Revved up by Develocity](https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?logo=Gradle&labelColor=02303A)](https://ge.spring.io/scans?search.rootProjectNames=spring)
# <img src="framework-docs/src/docs/spring-framework.png" width="80" height="80"> Spring Framework [![Build Status](https://github.com/spring-projects/spring-framework/actions/workflows/build-and-deploy-snapshot.yml/badge.svg?branch=6.0.x)](https://github.com/spring-projects/spring-framework/actions/workflows/build-and-deploy-snapshot.yml?query=branch%3A6.0.x) [![Revved up by Develocity](https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?logo=Gradle&labelColor=02303A)](https://ge.spring.io/scans?search.rootProjectNames=spring)
This is the home of the Spring Framework: the foundation for all [Spring projects](https://spring.io/projects). Collectively the Spring Framework and the family of Spring projects are often referred to simply as "Spring".
Spring provides everything required beyond the Java programming language for creating enterprise applications for a wide range of scenarios and architectures. Please read the [Overview](https://docs.spring.io/spring-framework/reference/overview.html) section of the reference documentation for a more complete introduction.
Spring provides everything required beyond the Java programming language for creating enterprise applications for a wide range of scenarios and architectures. Please read the [Overview](https://docs.spring.io/spring/docs/current/spring-framework-reference/overview.html#spring-introduction) section as reference for a more complete introduction.
## Code of Conduct
This project is governed by the [Spring Code of Conduct](CODE_OF_CONDUCT.adoc). By participating, you are expected to uphold this code of conduct. Please report unacceptable behavior to spring-code-of-conduct@spring.io.
This project is governed by the [Spring Code of Conduct](CODE_OF_CONDUCT.adoc). By participating, you are expected to uphold this code of conduct. Please report unacceptable behavior to spring-code-of-conduct@pivotal.io.
## Access to Binaries
@@ -14,7 +14,7 @@ For access to artifacts or a distribution zip, see the [Spring Framework Artifac
## Documentation
The Spring Framework maintains reference documentation ([published](https://docs.spring.io/spring-framework/reference/) and [source](framework-docs/modules/ROOT)), GitHub [wiki pages](https://github.com/spring-projects/spring-framework/wiki), and an
The Spring Framework maintains reference documentation ([published](https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/) and [source](framework-docs/src/docs/asciidoc)), GitHub [wiki pages](https://github.com/spring-projects/spring-framework/wiki), and an
[API reference](https://docs.spring.io/spring-framework/docs/current/javadoc-api/). There are also [guides and tutorials](https://spring.io/guides) across Spring projects.
## Micro-Benchmarks
@@ -31,7 +31,7 @@ Information regarding CI builds can be found in the [Spring Framework Concourse
## Stay in Touch
Follow [@SpringCentral](https://twitter.com/springcentral), [@SpringFramework](https://twitter.com/springframework), and its [team members](https://twitter.com/springframework/lists/team/members) on 𝕏. In-depth articles can be found at [The Spring Blog](https://spring.io/blog/), and releases are announced via our [releases feed](https://spring.io/blog/category/releases).
Follow [@SpringCentral](https://twitter.com/springcentral), [@SpringFramework](https://twitter.com/springframework), and its [team members](https://twitter.com/springframework/lists/team/members) on Twitter. In-depth articles can be found at [The Spring Blog](https://spring.io/blog/), and releases are announced via our [news feed](https://spring.io/blog/category/news).
## License
+77 -27
View File
@@ -1,26 +1,22 @@
plugins {
id 'io.freefair.aspectj' version '8.4' apply false
id 'io.spring.nohttp' version '0.0.11'
id 'io.freefair.aspectj' version '8.0.1' apply false
// kotlinVersion is managed in gradle.properties
id 'org.jetbrains.kotlin.plugin.serialization' version "${kotlinVersion}" apply false
id 'org.jetbrains.dokka' version '1.8.20'
id 'org.unbroken-dome.xjc' version '2.0.0' apply false
id 'com.github.ben-manes.versions' version '0.51.0'
id 'com.github.bjornvester.xjc' version '1.8.2' apply false
id 'com.github.johnrengelman.shadow' version '8.1.1' apply false
id 'de.undercouch.download' version '5.4.0'
id 'io.github.goooler.shadow' version '8.1.8' apply false
id 'me.champeau.jmh' version '0.7.2' apply false
id 'me.champeau.mrjar' version '0.1.1'
}
ext {
moduleProjects = subprojects.findAll { it.name.startsWith("spring-") }
javaProjects = subprojects.findAll { !it.name.startsWith("framework-") }
javaProjects = subprojects - project(":framework-bom") - project(":framework-platform")
}
description = "Spring Framework"
configure(allprojects) { project ->
apply plugin: "org.springframework.build.localdev"
group = "org.springframework"
repositories {
mavenCentral()
maven {
@@ -45,7 +41,16 @@ configure(allprojects) { project ->
}
}
configure(allprojects - project(":framework-platform")) {
configure([rootProject] + javaProjects) { project ->
group = "org.springframework"
apply plugin: "java"
apply plugin: "java-test-fixtures"
apply plugin: "checkstyle"
apply plugin: 'org.springframework.build.conventions'
apply from: "${rootDir}/gradle/toolchains.gradle"
apply from: "${rootDir}/gradle/ide.gradle"
configurations {
dependencyManagement {
canBeConsumed = false
@@ -54,19 +59,36 @@ configure(allprojects - project(":framework-platform")) {
}
matching { it.name.endsWith("Classpath") }.all { it.extendsFrom(dependencyManagement) }
}
test {
useJUnitPlatform()
include(["**/*Tests.class", "**/*Test.class"])
systemProperty("java.awt.headless", "true")
systemProperty("testGroups", project.properties.get("testGroups"))
systemProperty("io.netty.leakDetection.level", "paranoid")
systemProperty("io.netty5.leakDetectionLevel", "paranoid")
systemProperty("io.netty5.leakDetection.targetRecords", "32")
systemProperty("io.netty5.buffer.lifecycleTracingEnabled", "true")
systemProperty("io.netty5.buffer.leakDetectionEnabled", "true")
jvmArgs(["--add-opens=java.base/java.lang=ALL-UNNAMED",
"--add-opens=java.base/java.util=ALL-UNNAMED"])
}
checkstyle {
toolVersion = "10.12.7"
configDirectory.set(rootProject.file("src/checkstyle"))
}
tasks.named("checkstyleMain").configure {
maxHeapSize = "1g"
}
tasks.named("checkstyleTest").configure {
maxHeapSize = "1g"
}
dependencies {
dependencyManagement(enforcedPlatform(dependencies.project(path: ":framework-platform")))
}
}
configure([rootProject] + javaProjects) { project ->
apply plugin: "java"
apply plugin: "java-test-fixtures"
apply plugin: 'org.springframework.build.conventions'
apply from: "${rootDir}/gradle/toolchains.gradle"
apply from: "${rootDir}/gradle/ide.gradle"
dependencies {
testImplementation("org.junit.jupiter:junit-jupiter-api")
testImplementation("org.junit.jupiter:junit-jupiter-params")
testImplementation("org.junit.platform:junit-platform-suite-api")
@@ -84,6 +106,7 @@ configure([rootProject] + javaProjects) { project ->
// JSR-305 only used for non-required meta-annotations
compileOnly("com.google.code.findbugs:jsr305")
testCompileOnly("com.google.code.findbugs:jsr305")
checkstyle("io.spring.javaformat:spring-javaformat-checkstyle:0.0.42")
}
ext.javadocLinks = [
@@ -92,26 +115,53 @@ configure([rootProject] + javaProjects) { project ->
"https://docs.jboss.org/hibernate/orm/5.6/javadocs/",
"https://eclipse.dev/aspectj/doc/released/aspectj5rt-api",
"https://www.quartz-scheduler.org/api/2.3.0/",
"https://fasterxml.github.io/jackson-core/javadoc/2.14/",
"https://fasterxml.github.io/jackson-databind/javadoc/2.14/",
"https://fasterxml.github.io/jackson-dataformat-xml/javadoc/2.14/",
"https://www.javadoc.io/doc/com.fasterxml.jackson.core/jackson-core/2.14.1/",
"https://www.javadoc.io/doc/com.fasterxml.jackson.core/jackson-databind/2.14.1/",
"https://www.javadoc.io/doc/com.fasterxml.jackson.dataformat/jackson-dataformat-xml/2.14.1/",
"https://hc.apache.org/httpcomponents-client-5.2.x/current/httpclient5/apidocs/",
"https://projectreactor.io/docs/test/release/api/",
"https://junit.org/junit4/javadoc/4.13.2/",
// TODO Uncomment link to JUnit 5 docs once we execute Gradle with Java 18+.
// See https://github.com/spring-projects/spring-framework/issues/27497
//
// "https://junit.org/junit5/docs/5.10.2/api/",
// "https://junit.org/junit5/docs/5.9.3/api/",
"https://www.reactive-streams.org/reactive-streams-1.0.3-javadoc/",
//"https://javadoc.io/static/io.rsocket/rsocket-core/1.1.1/",
"https://javadoc.io/static/io.rsocket/rsocket-core/1.1.1/",
"https://r2dbc.io/spec/1.0.0.RELEASE/api/",
// Previously there could be a split-package issue between JSR250 and JSR305 javax.annotation packages,
// but since 6.0 JSR 250 annotations such as @Resource and @PostConstruct have been replaced by their
// JakartaEE equivalents in the jakarta.annotation package.
//"https://www.javadoc.io/doc/com.google.code.findbugs/jsr305/3.0.2/"
"https://www.javadoc.io/doc/com.google.code.findbugs/jsr305/3.0.2/"
] as String[]
}
configure(moduleProjects) { project ->
apply from: "${rootDir}/gradle/spring-module.gradle"
}
configure(rootProject) {
description = "Spring Framework"
apply plugin: "io.spring.nohttp"
nohttp {
source.exclude "**/test-output/**"
source.exclude "**/.gradle/**"
allowlistFile = project.file("src/nohttp/allowlist.lines")
def rootPath = file(rootDir).toPath()
def projectDirs = allprojects.collect { it.projectDir } + "${rootDir}/buildSrc"
projectDirs.forEach { dir ->
[ 'bin', 'build', 'out', '.settings', 'node_modules' ]
.collect { rootPath.relativize(new File(dir, it).toPath()) }
.forEach { source.exclude "$it/**" }
[ '.classpath', '.project' ]
.collect { rootPath.relativize(new File(dir, it).toPath()) }
.forEach { source.exclude "$it" }
}
}
tasks.named("checkstyleNohttp").configure {
maxHeapSize = "1g"
}
}
+2 -10
View File
@@ -1,6 +1,5 @@
plugins {
id 'java-gradle-plugin'
id 'checkstyle'
}
repositories {
@@ -18,12 +17,9 @@ ext {
}
dependencies {
checkstyle "io.spring.javaformat:spring-javaformat-checkstyle:${javaFormatVersion}"
implementation "org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}"
implementation "org.jetbrains.kotlin:kotlin-compiler-embeddable:${kotlinVersion}"
implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}")
implementation("org.jetbrains.kotlin:kotlin-compiler-embeddable:${kotlinVersion}")
implementation "org.gradle:test-retry-gradle-plugin:1.5.6"
implementation "io.spring.javaformat:spring-javaformat-gradle-plugin:${javaFormatVersion}"
implementation "io.spring.nohttp:nohttp-gradle:0.0.11"
}
gradlePlugin {
@@ -32,10 +28,6 @@ gradlePlugin {
id = "org.springframework.build.conventions"
implementationClass = "org.springframework.build.ConventionsPlugin"
}
localDevPlugin {
id = "org.springframework.build.localdev"
implementationClass = "org.springframework.build.dev.LocalDevelopmentPlugin"
}
optionalDependenciesPlugin {
id = "org.springframework.build.optional-dependencies"
implementationClass = "org.springframework.build.optional.OptionalDependenciesPlugin"
-27
View File
@@ -1,27 +0,0 @@
<?xml version="1.0"?>
<!DOCTYPE module PUBLIC "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN" "https://checkstyle.org/dtds/configuration_1_3.dtd">
<module name="com.puppycrawl.tools.checkstyle.Checker">
<!-- Root Checks -->
<module name="io.spring.javaformat.checkstyle.check.SpringHeaderCheck">
<property name="fileExtensions" value="java"/>
<property name="headerType" value="apache2"/>
<property name="headerCopyrightPattern" value="20\d\d-20\d\d"/>
<property name="packageInfoHeaderType" value="none"/>
</module>
<module name="com.puppycrawl.tools.checkstyle.checks.NewlineAtEndOfFileCheck"/>
<!-- TreeWalker Checks -->
<module name="com.puppycrawl.tools.checkstyle.TreeWalker">
<!-- Imports -->
<module name="com.puppycrawl.tools.checkstyle.checks.imports.UnusedImportsCheck">
<property name="processJavadoc" value="true"/>
</module>
<!-- Modifiers -->
<module name="com.puppycrawl.tools.checkstyle.checks.modifier.ModifierOrderCheck"/>
</module>
</module>
-1
View File
@@ -1,2 +1 @@
org.gradle.caching=true
javaFormatVersion=0.0.42
@@ -1,79 +0,0 @@
/*
* Copyright 2002-2024 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.build;
import java.io.File;
import java.nio.file.Path;
import java.util.List;
import io.spring.javaformat.gradle.SpringJavaFormatPlugin;
import io.spring.nohttp.gradle.NoHttpExtension;
import io.spring.nohttp.gradle.NoHttpPlugin;
import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.artifacts.DependencySet;
import org.gradle.api.plugins.JavaBasePlugin;
import org.gradle.api.plugins.quality.Checkstyle;
import org.gradle.api.plugins.quality.CheckstyleExtension;
import org.gradle.api.plugins.quality.CheckstylePlugin;
/**
* {@link Plugin} that applies conventions for checkstyle.
*
* @author Brian Clozel
*/
public class CheckstyleConventions {
/**
* Applies the Spring Java Format and Checkstyle plugins with the project conventions.
* @param project the current project
*/
public void apply(Project project) {
project.getPlugins().withType(JavaBasePlugin.class, (java) -> {
if (project.getRootProject() == project) {
configureNoHttpPlugin(project);
}
project.getPlugins().apply(CheckstylePlugin.class);
project.getTasks().withType(Checkstyle.class).forEach(checkstyle -> checkstyle.getMaxHeapSize().set("1g"));
CheckstyleExtension checkstyle = project.getExtensions().getByType(CheckstyleExtension.class);
checkstyle.setToolVersion("10.17.0");
checkstyle.getConfigDirectory().set(project.getRootProject().file("src/checkstyle"));
String version = SpringJavaFormatPlugin.class.getPackage().getImplementationVersion();
DependencySet checkstyleDependencies = project.getConfigurations().getByName("checkstyle").getDependencies();
checkstyleDependencies.add(
project.getDependencies().create("io.spring.javaformat:spring-javaformat-checkstyle:" + version));
});
}
private static void configureNoHttpPlugin(Project project) {
project.getPlugins().apply(NoHttpPlugin.class);
NoHttpExtension noHttp = project.getExtensions().getByType(NoHttpExtension.class);
noHttp.setAllowlistFile(project.file("src/nohttp/allowlist.lines"));
noHttp.getSource().exclude("**/test-output/**", "**/.settings/**",
"**/.classpath", "**/.project", "**/.gradle/**", "**/node_modules/**");
List<String> buildFolders = List.of("bin", "build", "out");
project.allprojects(subproject -> {
Path rootPath = project.getRootDir().toPath();
Path projectPath = rootPath.relativize(subproject.getProjectDir().toPath());
for (String buildFolder : buildFolders) {
Path innerBuildDir = projectPath.resolve(buildFolder);
noHttp.getSource().exclude(innerBuildDir + File.separator + "**");
}
});
}
}
@@ -1,5 +1,5 @@
/*
* Copyright 2002-2023 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -25,8 +25,10 @@ import org.jetbrains.kotlin.gradle.plugin.KotlinBasePlugin;
* Plugin to apply conventions to projects that are part of Spring Framework's build.
* Conventions are applied in response to various plugins being applied.
*
* <p>When the {@link JavaBasePlugin} is applied, the conventions in {@link CheckstyleConventions},
* {@link TestConventions} and {@link JavaConventions} are applied.
* When the {@link JavaBasePlugin} is applied, the conventions in {@link TestConventions}
* are applied.
* When the {@link JavaBasePlugin} is applied, the conventions in {@link JavaConventions}
* are applied.
* When the {@link KotlinBasePlugin} is applied, the conventions in {@link KotlinConventions}
* are applied.
*
@@ -36,10 +38,8 @@ public class ConventionsPlugin implements Plugin<Project> {
@Override
public void apply(Project project) {
new CheckstyleConventions().apply(project);
new JavaConventions().apply(project);
new KotlinConventions().apply(project);
new TestConventions().apply(project);
}
}
@@ -1,5 +1,5 @@
/*
* Copyright 2002-2023 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -24,10 +24,7 @@ import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.plugins.JavaBasePlugin;
import org.gradle.api.plugins.JavaPlugin;
import org.gradle.api.plugins.JavaPluginExtension;
import org.gradle.api.tasks.compile.JavaCompile;
import org.gradle.jvm.toolchain.JavaLanguageVersion;
import org.gradle.jvm.toolchain.JvmVendorSpec;
/**
* {@link Plugin} that applies conventions for compiling Java sources in Spring Framework.
@@ -71,10 +68,6 @@ public class JavaConventions {
* @param project the current project
*/
private void applyJavaCompileConventions(Project project) {
project.getExtensions().getByType(JavaPluginExtension.class).toolchain(toolchain -> {
toolchain.getVendor().set(JvmVendorSpec.BELLSOFT);
toolchain.getLanguageVersion().set(JavaLanguageVersion.of(17));
});
project.getTasks().withType(JavaCompile.class)
.matching(compileTask -> compileTask.getName().equals(JavaPlugin.COMPILE_JAVA_TASK_NAME))
.forEach(compileTask -> {
@@ -1,5 +1,5 @@
/*
* Copyright 2002-2024 the original author or authors.
* Copyright 2002-2023 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -16,8 +16,6 @@
package org.springframework.build;
import java.util.Map;
import org.gradle.api.Project;
import org.gradle.api.plugins.JavaBasePlugin;
import org.gradle.api.tasks.testing.Test;
@@ -43,38 +41,11 @@ class TestConventions {
private void configureTestConventions(Project project) {
project.getTasks().withType(Test.class,
test -> {
configureTests(project, test);
configureTestRetryPlugin(project, test);
});
}
private void configureTests(Project project, Test test) {
test.useJUnitPlatform();
test.include("**/*Tests.class", "**/*Test.class");
test.setSystemProperties(Map.of(
"java.awt.headless", "true",
"io.netty.leakDetection.level", "paranoid",
"io.netty5.leakDetectionLevel", "paranoid",
"io.netty5.leakDetection.targetRecords", "32",
"io.netty5.buffer.lifecycleTracingEnabled", "true"
));
if (project.hasProperty("testGroups")) {
test.systemProperty("testGroups", project.getProperties().get("testGroups"));
}
test.jvmArgs(
"--add-opens=java.base/java.lang=ALL-UNNAMED",
"--add-opens=java.base/java.util=ALL-UNNAMED",
"-Xshare:off"
);
}
private void configureTestRetryPlugin(Project project, Test test) {
project.getPlugins().withType(TestRetryPlugin.class, testRetryPlugin -> {
TestRetryTaskExtension testRetry = test.getExtensions().getByType(TestRetryTaskExtension.class);
testRetry.getFailOnPassedAfterRetry().set(true);
testRetry.getMaxRetries().set(isCi() ? 3 : 0);
});
test -> project.getPlugins().withType(TestRetryPlugin.class, testRetryPlugin -> {
TestRetryTaskExtension testRetry = test.getExtensions().getByType(TestRetryTaskExtension.class);
testRetry.getFailOnPassedAfterRetry().set(true);
testRetry.getMaxRetries().set(isCi() ? 3 : 0);
}));
}
private boolean isCi() {
@@ -1,49 +0,0 @@
/*
* Copyright 2002-2023 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.build.dev;
import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.plugins.JavaBasePlugin;
/**
* {@link Plugin} that skips documentation tasks when the {@code "-PskipDocs"} property is defined.
*
* @author Brian Clozel
*/
public class LocalDevelopmentPlugin implements Plugin<Project> {
private static final String SKIP_DOCS_PROPERTY = "skipDocs";
@Override
public void apply(Project target) {
if (target.hasProperty(SKIP_DOCS_PROPERTY)) {
skipDocumentationTasks(target);
target.subprojects(this::skipDocumentationTasks);
}
}
private void skipDocumentationTasks(Project project) {
project.afterEvaluate(p -> {
p.getTasks().matching(task -> {
return JavaBasePlugin.DOCUMENTATION_GROUP.equals(task.getGroup())
|| "distribution".equals(task.getGroup());
})
.forEach(task -> task.setEnabled(false));
});
}
}
@@ -1,48 +0,0 @@
/*
* Copyright 2002-2023 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.build.hint;
import java.util.Collections;
import org.gradle.api.file.ConfigurableFileCollection;
import org.gradle.api.provider.SetProperty;
import org.gradle.api.tasks.Classpath;
import org.gradle.api.tasks.Input;
import org.gradle.process.CommandLineArgumentProvider;
/**
* Argument provider for registering the runtime hints agent with a Java process.
*/
public interface RuntimeHintsAgentArgumentProvider extends CommandLineArgumentProvider {
@Classpath
ConfigurableFileCollection getAgentJar();
@Input
SetProperty<String> getIncludedPackages();
@Input
SetProperty<String> getExcludedPackages();
@Override
default Iterable<String> asArguments() {
StringBuilder packages = new StringBuilder();
getIncludedPackages().get().forEach(packageName -> packages.append('+').append(packageName).append(','));
getExcludedPackages().get().forEach(packageName -> packages.append('-').append(packageName).append(','));
return Collections.singleton("-javaagent:" + getAgentJar().getSingleFile() + "=" + packages);
}
}
@@ -1,5 +1,5 @@
/*
* Copyright 2002-2023 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -16,15 +16,38 @@
package org.springframework.build.hint;
import java.util.Collections;
import org.gradle.api.model.ObjectFactory;
import org.gradle.api.provider.SetProperty;
/**
* Entry point to the DSL extension for the {@link RuntimeHintsAgentPlugin} Gradle plugin.
* @author Brian Clozel
*/
public interface RuntimeHintsAgentExtension {
public class RuntimeHintsAgentExtension {
SetProperty<String> getIncludedPackages();
private final SetProperty<String> includedPackages;
SetProperty<String> getExcludedPackages();
private final SetProperty<String> excludedPackages;
public RuntimeHintsAgentExtension(ObjectFactory objectFactory) {
this.includedPackages = objectFactory.setProperty(String.class).convention(Collections.singleton("org.springframework"));
this.excludedPackages = objectFactory.setProperty(String.class).convention(Collections.emptySet());
}
public SetProperty<String> getIncludedPackages() {
return this.includedPackages;
}
public SetProperty<String> getExcludedPackages() {
return this.excludedPackages;
}
String asJavaAgentArgument() {
StringBuilder builder = new StringBuilder();
this.includedPackages.get().forEach(packageName -> builder.append('+').append(packageName).append(','));
this.excludedPackages.get().forEach(packageName -> builder.append('-').append(packageName).append(','));
return builder.toString();
}
}
@@ -1,5 +1,5 @@
/*
* Copyright 2002-2023 the original author or authors.
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -16,85 +16,41 @@
package org.springframework.build.hint;
import org.gradle.api.JavaVersion;
import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.artifacts.Configuration;
import org.gradle.api.attributes.Bundling;
import org.gradle.api.attributes.Category;
import org.gradle.api.attributes.LibraryElements;
import org.gradle.api.attributes.Usage;
import org.gradle.api.attributes.java.TargetJvmVersion;
import org.gradle.api.plugins.JavaPlugin;
import org.gradle.api.plugins.jvm.JvmTestSuite;
import org.gradle.api.tasks.bundling.Jar;
import org.gradle.api.tasks.testing.Test;
import org.gradle.testing.base.TestingExtension;
import java.util.Collections;
/**
* {@link Plugin} that configures the {@code RuntimeHints} Java agent to test tasks.
*
* @author Brian Clozel
* @author Sebastien Deleuze
*/
public class RuntimeHintsAgentPlugin implements Plugin<Project> {
public static final String RUNTIMEHINTS_TEST_TASK = "runtimeHintsTest";
private static final String EXTENSION_NAME = "runtimeHintsAgent";
private static final String CONFIGURATION_NAME = "testRuntimeHintsAgentJar";
@Override
public void apply(Project project) {
project.getPlugins().withType(JavaPlugin.class, javaPlugin -> {
TestingExtension testing = project.getExtensions().getByType(TestingExtension.class);
JvmTestSuite jvmTestSuite = (JvmTestSuite) testing.getSuites().getByName("test");
RuntimeHintsAgentExtension agentExtension = createRuntimeHintsAgentExtension(project);
RuntimeHintsAgentExtension agentExtension = project.getExtensions().create(EXTENSION_NAME,
RuntimeHintsAgentExtension.class, project.getObjects());
Test agentTest = project.getTasks().create(RUNTIMEHINTS_TEST_TASK, Test.class, test -> {
test.useJUnitPlatform(options -> {
options.includeTags("RuntimeHintsTests");
});
test.include("**/*Tests.class", "**/*Test.class");
test.systemProperty("java.awt.headless", "true");
test.systemProperty("org.graalvm.nativeimage.imagecode", "runtime");
test.setTestClassesDirs(jvmTestSuite.getSources().getOutput().getClassesDirs());
test.setClasspath(jvmTestSuite.getSources().getRuntimeClasspath());
test.getJvmArgumentProviders().add(createRuntimeHintsAgentArgumentProvider(project, agentExtension));
});
project.afterEvaluate(p -> {
Jar jar = project.getRootProject().project("spring-core-test").getTasks().withType(Jar.class).named("jar").get();
agentTest.jvmArgs("-javaagent:" + jar.getArchiveFile().get().getAsFile() + "=" + agentExtension.asJavaAgentArgument());
});
project.getTasks().getByName("check", task -> task.dependsOn(agentTest));
project.getDependencies().add(CONFIGURATION_NAME, project.project(":spring-core-test"));
});
}
private static RuntimeHintsAgentExtension createRuntimeHintsAgentExtension(Project project) {
RuntimeHintsAgentExtension agentExtension = project.getExtensions().create(EXTENSION_NAME, RuntimeHintsAgentExtension.class);
agentExtension.getIncludedPackages().convention(Collections.singleton("org.springframework"));
agentExtension.getExcludedPackages().convention(Collections.emptySet());
return agentExtension;
}
private static RuntimeHintsAgentArgumentProvider createRuntimeHintsAgentArgumentProvider(
Project project, RuntimeHintsAgentExtension agentExtension) {
RuntimeHintsAgentArgumentProvider agentArgumentProvider = project.getObjects().newInstance(RuntimeHintsAgentArgumentProvider.class);
agentArgumentProvider.getAgentJar().from(createRuntimeHintsAgentConfiguration(project));
agentArgumentProvider.getIncludedPackages().set(agentExtension.getIncludedPackages());
agentArgumentProvider.getExcludedPackages().set(agentExtension.getExcludedPackages());
return agentArgumentProvider;
}
private static Configuration createRuntimeHintsAgentConfiguration(Project project) {
return project.getConfigurations().create(CONFIGURATION_NAME, configuration -> {
configuration.setCanBeConsumed(false);
configuration.setTransitive(false); // Only the built artifact is required
configuration.attributes(attributes -> {
attributes.attribute(Bundling.BUNDLING_ATTRIBUTE, project.getObjects().named(Bundling.class, Bundling.EXTERNAL));
attributes.attribute(Category.CATEGORY_ATTRIBUTE, project.getObjects().named(Category.class, Category.LIBRARY));
attributes.attribute(LibraryElements.LIBRARY_ELEMENTS_ATTRIBUTE, project.getObjects().named(LibraryElements.class, LibraryElements.JAR));
attributes.attribute(TargetJvmVersion.TARGET_JVM_VERSION_ATTRIBUTE, Integer.valueOf(JavaVersion.current().getMajorVersion()));
attributes.attribute(Usage.USAGE_ATTRIBUTE, project.getObjects().named(Usage.class, Usage.JAVA_RUNTIME));
});
});
}
}
@@ -1,5 +1,5 @@
/*
* Copyright 2002-2023 the original author or authors.
* Copyright 2002-2021 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -19,7 +19,7 @@ package org.springframework.build.optional;
import org.gradle.api.Plugin;
import org.gradle.api.Project;
import org.gradle.api.artifacts.Configuration;
import org.gradle.api.plugins.JavaBasePlugin;
import org.gradle.api.plugins.JavaPlugin;
import org.gradle.api.plugins.JavaPluginExtension;
import org.gradle.api.tasks.SourceSetContainer;
@@ -40,10 +40,10 @@ public class OptionalDependenciesPlugin implements Plugin<Project> {
@Override
public void apply(Project project) {
Configuration optional = project.getConfigurations().create(OPTIONAL_CONFIGURATION_NAME);
Configuration optional = project.getConfigurations().create("optional");
optional.setCanBeConsumed(false);
optional.setCanBeResolved(false);
project.getPlugins().withType(JavaBasePlugin.class, (javaBasePlugin) -> {
project.getPlugins().withType(JavaPlugin.class, (javaPlugin) -> {
SourceSetContainer sourceSets = project.getExtensions().getByType(JavaPluginExtension.class)
.getSourceSets();
sourceSets.all((sourceSet) -> {
@@ -53,4 +53,4 @@ public class OptionalDependenciesPlugin implements Plugin<Project> {
});
}
}
}
@@ -1,19 +1,3 @@
/*
* Copyright 2002-2023 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.build.shadow;
import java.io.File;
-119
View File
@@ -1,119 +0,0 @@
plugins {
id 'java-platform'
id 'io.freefair.aggregate-javadoc' version '8.3'
}
description = "Spring Framework API Docs"
apply from: "${rootDir}/gradle/publications.gradle"
repositories {
maven {
url "https://repo.spring.io/release"
}
}
dependencies {
moduleProjects.each { moduleProject ->
javadoc moduleProject
}
}
javadoc {
title = "${rootProject.description} ${version} API"
options {
encoding = "UTF-8"
memberLevel = JavadocMemberLevel.PROTECTED
author = true
header = rootProject.description
use = true
overview = project.relativePath("$rootProject.rootDir/framework-docs/src/docs/api/overview.html")
destinationDir = project.java.docsDir.dir("javadoc-api").get().asFile
splitIndex = true
links(rootProject.ext.javadocLinks)
addBooleanOption('Xdoclint:syntax,reference', true) // only check syntax and reference with doclint
addBooleanOption('Werror', true) // fail build on Javadoc warnings
}
maxMemory = "1024m"
doFirst {
classpath += files(
// ensure the javadoc process can resolve types compiled from .aj sources
project(":spring-aspects").sourceSets.main.output
)
classpath += files(moduleProjects.collect { it.sourceSets.main.compileClasspath })
}
}
/**
* Produce KDoc for all Spring Framework modules in "build/docs/kdoc"
*/
rootProject.tasks.dokkaHtmlMultiModule.configure {
dependsOn {
tasks.named("javadoc")
}
moduleName.set("spring-framework")
outputDirectory.set(project.java.docsDir.dir("kdoc-api").get().asFile)
includes.from("$rootProject.rootDir/framework-docs/src/docs/api/dokka-overview.md")
}
/**
* Zip all Java docs (javadoc & kdoc) into a single archive
*/
tasks.register('docsZip', Zip) {
dependsOn = ['javadoc', rootProject.tasks.dokkaHtmlMultiModule]
group = "distribution"
description = "Builds -${archiveClassifier} archive containing api and reference " +
"for deployment at https://docs.spring.io/spring-framework/docs/."
archiveBaseName.set("spring-framework")
archiveClassifier.set("docs")
from("src/dist") {
include "changelog.txt"
}
from(javadoc) {
into "javadoc-api"
}
from(rootProject.tasks.dokkaHtmlMultiModule.outputDirectory) {
into "kdoc-api"
}
}
/**
* Zip all Spring Framework schemas into a single archive
*/
tasks.register('schemaZip', Zip) {
group = "distribution"
archiveBaseName.set("spring-framework")
archiveClassifier.set("schema")
description = "Builds -${archiveClassifier} archive containing all " +
"XSDs for deployment at https://springframework.org/schema."
duplicatesStrategy DuplicatesStrategy.EXCLUDE
moduleProjects.each { module ->
def Properties schemas = new Properties();
module.sourceSets.main.resources.find {
(it.path.endsWith("META-INF/spring.schemas") || it.path.endsWith("META-INF\\spring.schemas"))
}?.withInputStream { schemas.load(it) }
for (def key : schemas.keySet()) {
def shortName = key.replaceAll(/http.*schema.(.*).spring-.*/, '$1')
assert shortName != key
File xsdFile = module.sourceSets.main.resources.find {
(it.path.endsWith(schemas.get(key)) || it.path.endsWith(schemas.get(key).replaceAll('\\/', '\\\\')))
}
assert xsdFile != null
into(shortName) {
from xsdFile.path
}
}
}
}
publishing {
publications {
mavenJava(MavenPublication) {
artifact docsZip
artifact schemaZip
}
}
}
+9 -71
View File
@@ -17,78 +17,16 @@ asciidoc:
# FIXME: the copyright is not removed
# FIXME: The package is not renamed
chomp: 'all'
fold: 'all'
table-stripes: 'odd'
include-java: 'example$docs-src/main/java/org/springframework/docs'
include-kotlin: 'example$docs-src/main/kotlin/org/springframework/docs'
spring-site: 'https://spring.io'
spring-site-blog: '{spring-site}/blog'
spring-site-cve: "{spring-site}/security"
spring-site-guides: '{spring-site}/guides'
spring-site-projects: '{spring-site}/projects'
spring-site-tools: "{spring-site}/tools"
spring-org: 'spring-projects'
spring-github-org: "https://github.com/{spring-org}"
spring-framework-github: "https://github.com/{spring-org}/spring-framework"
spring-framework-code: '{spring-framework-github}/tree/main'
spring-framework-issues: '{spring-framework-github}/issues'
spring-framework-wiki: '{spring-framework-github}/wiki'
# Docs
spring-framework-main-code: 'https://github.com/spring-projects/spring-framework/tree/main'
docs-site: 'https://docs.spring.io'
spring-framework-docs-root: '{docs-site}/spring-framework/docs'
spring-framework-api: '{spring-framework-docs-root}/{spring-version}/javadoc-api/org/springframework'
spring-framework-api-kdoc: '{spring-framework-docs-root}/{spring-version}/kdoc-api'
spring-framework-reference: '{spring-framework-docs-root}/{spring-version}/reference'
#
# Other Spring portfolio projects
spring-boot-docs: '{docs-site}/spring-boot/docs/current/reference/html'
spring-boot-issues: '{spring-github-org}/spring-boot/issues'
# TODO add more projects / links or just build up on {docs-site}?
# TODO rename the below using new conventions
docs-spring: "{docs-site}/spring-framework/docs/{spring-version}"
docs-spring-framework: '{docs-site}/spring-framework/docs/{spring-version}'
api-spring-framework: '{docs-spring-framework}/javadoc-api/org/springframework'
docs-graalvm: 'https://www.graalvm.org/22.3/reference-manual'
docs-spring-boot: '{docs-site}/spring-boot/docs/current/reference'
docs-spring-gemfire: '{docs-site}/spring-gemfire/docs/current/reference'
docs-spring-security: '{docs-site}/spring-security/reference'
docs-spring-session: '{docs-site}/spring-session/reference'
#
# External projects URLs and related attributes
aspectj-site: 'https://www.eclipse.org/aspectj'
aspectj-docs: "{aspectj-site}/doc/released"
aspectj-api: "{aspectj-docs}/runtime-api"
aspectj-docs-devguide: "{aspectj-docs}/devguide"
aspectj-docs-progguide: "{aspectj-docs}/progguide"
assertj-docs: 'https://assertj.github.io/doc'
baeldung-blog: 'https://www.baeldung.com'
bean-validation-site: 'https://beanvalidation.org'
graalvm-docs: 'https://www.graalvm.org/22.3/reference-manual'
hibernate-validator-site: 'https://hibernate.org/validator/'
jackson-docs: 'https://fasterxml.github.io'
jackson-github-org: 'https://github.com/FasterXML'
java-api: 'https://docs.oracle.com/en/java/javase/17/docs/api'
java-tutorial: 'https://docs.oracle.com/javase/tutorial'
JSR: 'https://www.jcp.org/en/jsr/detail?id='
kotlin-site: 'https://kotlinlang.org'
kotlin-docs: '{kotlin-site}/docs'
kotlin-api: '{kotlin-site}/api/latest'
kotlin-coroutines-api: '{kotlin-site}/api/kotlinx.coroutines'
kotlin-github-org: 'https://github.com/Kotlin'
kotlin-issues: 'https://youtrack.jetbrains.com/issue'
micrometer-docs: 'https://docs.micrometer.io/micrometer/reference'
micrometer-context-propagation-docs: 'https://docs.micrometer.io/context-propagation/reference'
reactive-streams-site: 'https://www.reactive-streams.org'
reactive-streams-spec: 'https://github.com/reactive-streams/reactive-streams-jvm/blob/master/README.md#specification'
reactor-github-org: 'https://github.com/reactor'
reactor-site: 'https://projectreactor.io'
rsocket-github-org: 'https://github.com/rsocket'
rsocket-java: '{rsocket-github-org}/rsocket-java'
rsocket-java-code: '{rsocket-java}/tree/master/'
rsocket-protocol-extensions: '{rsocket-github-org}/rsocket/tree/master/Extensions'
rsocket-site: 'https://rsocket.io'
rfc-site: 'https://datatracker.ietf.org/doc/html'
sockjs-client: 'https://github.com/sockjs/sockjs-client'
sockjs-protocol: 'https://github.com/sockjs/sockjs-protocol'
sockjs-protocol-site: "https://sockjs.github.io/sockjs-protocol"
stackoverflow-site: 'https://stackoverflow.com'
stackoverflow-questions: '{stackoverflow-site}/questions'
stackoverflow-spring-tag: "{stackoverflow-questions}/tagged/spring"
stackoverflow-spring-kotlin-tags: "{stackoverflow-spring-tag}+kotlin"
testcontainers-site: 'https://www.testcontainers.org'
vavr-docs: 'https://vavr-io.github.io/vavr-docs'
gh-rsocket: 'https://github.com/rsocket'
gh-rsocket-extensions: '{gh-rsocket}/rsocket/blob/master/Extensions'
gh-rsocket-java: '{gh-rsocket}/rsocket-java{gh-rsocket}/rsocket-java'
+166 -9
View File
@@ -6,9 +6,9 @@ plugins {
description = "Spring Framework Docs"
apply from: "${rootDir}/gradle/ide.gradle"
apply from: "${rootDir}/gradle/publications.gradle"
antora {
options = [clean: true, fetch: !project.gradle.startParameter.offline, stacktrace: true]
environment = [
@@ -17,16 +17,23 @@ antora {
]
}
tasks.named("generateAntoraYml") {
asciidocAttributes = project.provider( {
return ["spring-version": project.version ]
} )
}
tasks.register("generateAntoraResources") {
tasks.create("generateAntoraResources") {
dependsOn 'generateAntoraYml'
}
// Commented out for now:
// https://github.com/spring-projects/spring-framework/issues/30481
// tasks.named("check") {
// dependsOn 'antora'
// }
jar {
enabled = false
}
@@ -43,16 +50,166 @@ repositories {
dependencies {
api(project(":spring-context"))
api(project(":spring-jdbc"))
api(project(":spring-jms"))
api(project(":spring-web"))
api(project(":spring-webflux"))
api("com.oracle.database.jdbc:ojdbc11")
api("jakarta.jms:jakarta.jms-api")
api("jakarta.servlet:jakarta.servlet-api")
api("org.jetbrains.kotlin:kotlin-stdlib")
implementation(project(":spring-core-test"))
implementation("org.assertj:assertj-core")
}
/**
* Produce Javadoc for all Spring Framework modules in "build/docs/javadoc"
*/
task api(type: Javadoc) {
group = "Documentation"
description = "Generates aggregated Javadoc API documentation."
title = "${rootProject.description} ${version} API"
dependsOn {
moduleProjects.collect {
it.tasks.getByName("jar")
}
}
doFirst {
classpath = files(
// ensure the javadoc process can resolve types compiled from .aj sources
project(":spring-aspects").sourceSets.main.output
)
classpath += files(moduleProjects.collect { it.sourceSets.main.compileClasspath })
}
options {
encoding = "UTF-8"
memberLevel = JavadocMemberLevel.PROTECTED
author = true
header = rootProject.description
use = true
overview = "framework-docs/src/docs/api/overview.html"
splitIndex = true
links(project.ext.javadocLinks)
addBooleanOption('Xdoclint:syntax,reference', true) // only check syntax and reference with doclint
addBooleanOption('Werror', true) // fail build on Javadoc warnings
}
source moduleProjects.collect { project ->
project.sourceSets.main.allJava
}
maxMemory = "1024m"
destinationDir = file("$buildDir/docs/javadoc")
}
/**
* Produce KDoc for all Spring Framework modules in "build/docs/kdoc"
*/
rootProject.tasks.dokkaHtmlMultiModule.configure {
dependsOn {
tasks.getByName("api")
}
moduleName.set("spring-framework")
outputDirectory.set(project.file("$buildDir/docs/kdoc"))
}
/**
* Zip all Java docs (javadoc & kdoc) into a single archive
*/
task docsZip(type: Zip, dependsOn: ['api', rootProject.tasks.dokkaHtmlMultiModule]) {
group = "Distribution"
description = "Builds -${archiveClassifier} archive containing api and reference " +
"for deployment at https://docs.spring.io/spring-framework/docs/."
archiveBaseName.set("spring-framework")
archiveClassifier.set("docs")
from("src/dist") {
include "changelog.txt"
}
from (api) {
into "javadoc-api"
}
from (rootProject.tasks.dokkaHtmlMultiModule.outputDirectory) {
into "kdoc-api"
}
}
/**
* Zip all Spring Framework schemas into a single archive
*/
task schemaZip(type: Zip) {
group = "Distribution"
archiveBaseName.set("spring-framework")
archiveClassifier.set("schema")
description = "Builds -${archiveClassifier} archive containing all " +
"XSDs for deployment at https://springframework.org/schema."
duplicatesStrategy DuplicatesStrategy.EXCLUDE
moduleProjects.each { module ->
def Properties schemas = new Properties();
module.sourceSets.main.resources.find {
(it.path.endsWith("META-INF/spring.schemas") || it.path.endsWith("META-INF\\spring.schemas"))
}?.withInputStream { schemas.load(it) }
for (def key : schemas.keySet()) {
def shortName = key.replaceAll(/http.*schema.(.*).spring-.*/, '$1')
assert shortName != key
File xsdFile = module.sourceSets.main.resources.find {
(it.path.endsWith(schemas.get(key)) || it.path.endsWith(schemas.get(key).replaceAll('\\/','\\\\')))
}
assert xsdFile != null
into (shortName) {
from xsdFile.path
}
}
}
}
/**
* Create a distribution zip with everything:
* docs, schemas, jars, source jars, javadoc jars
*/
task distZip(type: Zip, dependsOn: [docsZip, schemaZip]) {
group = "Distribution"
archiveBaseName.set("spring-framework")
archiveClassifier.set("dist")
description = "Builds -${archiveClassifier} archive, containing all jars and docs, " +
"suitable for community download page."
ext.baseDir = "spring-framework-${project.version}";
from("src/docs/dist") {
include "readme.txt"
include "license.txt"
include "notice.txt"
into "${baseDir}"
expand(copyright: new Date().format("yyyy"), version: project.version)
}
from(zipTree(docsZip.archiveFile)) {
into "${baseDir}/docs"
}
from(zipTree(schemaZip.archiveFile)) {
into "${baseDir}/schema"
}
moduleProjects.each { module ->
into ("${baseDir}/libs") {
from module.jar
if (module.tasks.findByPath("sourcesJar")) {
from module.sourcesJar
}
if (module.tasks.findByPath("javadocJar")) {
from module.javadocJar
}
}
}
}
distZip.mustRunAfter moduleProjects.check
publishing {
publications {
mavenJava(MavenPublication) {
artifact docsZip
artifact schemaZip
artifact distZip
}
}
}
+1 -10
View File
@@ -122,7 +122,6 @@
**** xref:testing/testcontext-framework/ctx-management/groovy.adoc[]
**** xref:testing/testcontext-framework/ctx-management/javaconfig.adoc[]
**** xref:testing/testcontext-framework/ctx-management/mixed-config.adoc[]
**** xref:testing/testcontext-framework/ctx-management/context-customizers.adoc[]
**** xref:testing/testcontext-framework/ctx-management/initializers.adoc[]
**** xref:testing/testcontext-framework/ctx-management/inheritance.adoc[]
**** xref:testing/testcontext-framework/ctx-management/env-profiles.adoc[]
@@ -131,7 +130,6 @@
**** xref:testing/testcontext-framework/ctx-management/web.adoc[]
**** xref:testing/testcontext-framework/ctx-management/web-mocks.adoc[]
**** xref:testing/testcontext-framework/ctx-management/caching.adoc[]
**** xref:testing/testcontext-framework/ctx-management/failure-threshold.adoc[]
**** xref:testing/testcontext-framework/ctx-management/hierarchies.adoc[]
*** xref:testing/testcontext-framework/fixture-di.adoc[]
*** xref:testing/testcontext-framework/web-scoped-beans.adoc[]
@@ -167,7 +165,6 @@
***** xref:testing/annotations/integration-spring/annotation-contextconfiguration.adoc[]
***** xref:testing/annotations/integration-spring/annotation-webappconfiguration.adoc[]
***** xref:testing/annotations/integration-spring/annotation-contexthierarchy.adoc[]
***** xref:testing/annotations/integration-spring/annotation-contextcustomizerfactories.adoc[]
***** xref:testing/annotations/integration-spring/annotation-activeprofiles.adoc[]
***** xref:testing/annotations/integration-spring/annotation-testpropertysource.adoc[]
***** xref:testing/annotations/integration-spring/annotation-dynamicpropertysource.adoc[]
@@ -182,7 +179,6 @@
***** xref:testing/annotations/integration-spring/annotation-sqlconfig.adoc[]
***** xref:testing/annotations/integration-spring/annotation-sqlmergemode.adoc[]
***** xref:testing/annotations/integration-spring/annotation-sqlgroup.adoc[]
***** xref:testing/annotations/integration-spring/annotation-disabledinaotmode.adoc[]
**** xref:testing/annotations/integration-junit4.adoc[]
**** xref:testing/annotations/integration-junit-jupiter.adoc[]
**** xref:testing/annotations/integration-meta.adoc[]
@@ -270,7 +266,6 @@
***** xref:web/webmvc/mvc-controller/ann-methods/jackson.adoc[]
**** xref:web/webmvc/mvc-controller/ann-modelattrib-methods.adoc[]
**** xref:web/webmvc/mvc-controller/ann-initbinder.adoc[]
**** xref:web/webmvc/mvc-controller/ann-validation.adoc[]
**** xref:web/webmvc/mvc-controller/ann-exceptionhandler.adoc[]
**** xref:web/webmvc/mvc-controller/ann-advice.adoc[]
*** xref:web/webmvc-functional.adoc[]
@@ -365,7 +360,6 @@
***** xref:web/webflux/controller/ann-methods/jackson.adoc[]
**** xref:web/webflux/controller/ann-modelattrib-methods.adoc[]
**** xref:web/webflux/controller/ann-initbinder.adoc[]
**** xref:web/webflux/controller/ann-validation.adoc[]
**** xref:web/webflux/controller/ann-exceptions.adoc[]
**** xref:web/webflux/controller/ann-advice.adoc[]
*** xref:web/webflux-functional.adoc[]
@@ -420,8 +414,6 @@
*** xref:integration/cache/plug.adoc[]
*** xref:integration/cache/specific-config.adoc[]
** xref:integration/observability.adoc[]
** xref:integration/checkpoint-restore.adoc[]
** xref:integration/cds.adoc[]
** xref:integration/appendix.adoc[]
* xref:languages.adoc[]
** xref:languages/kotlin.adoc[]
@@ -439,5 +431,4 @@
** xref:languages/groovy.adoc[]
** xref:languages/dynamic.adoc[]
* xref:appendix.adoc[]
* {spring-framework-wiki}[Wiki]
* https://github.com/spring-projects/spring-framework/wiki[Wiki]
+14 -55
View File
@@ -8,7 +8,7 @@ within the core Spring Framework.
[[appendix-spring-properties]]
== Spring Properties
{spring-framework-api}/core/SpringProperties.html[`SpringProperties`] is a static holder
{api-spring-framework}/core/SpringProperties.html[`SpringProperties`] is a static holder
for properties that control certain low-level aspects of the Spring Framework. Users can
configure these properties via JVM system properties or programmatically via the
`SpringProperties.setProperty(String key, String value)` method. The latter may be
@@ -19,53 +19,15 @@ of the classpath -- for example, deployed within the application's JAR file.
The following table lists all currently supported Spring properties.
.Supported Spring Properties
[cols="1,1"]
|===
| Name | Description
| `spring.aot.enabled`
| Indicates the application should run with AOT generated artifacts. See
xref:core/aot.adoc[Ahead of Time Optimizations] and
{spring-framework-api}++/aot/AotDetector.html#AOT_ENABLED++[`AotDetector`]
for details.
| `spring.beaninfo.ignore`
| Instructs Spring to use the `Introspector.IGNORE_ALL_BEANINFO` mode when calling the
JavaBeans `Introspector`. See
{spring-framework-api}++/beans/StandardBeanInfoFactory.html#IGNORE_BEANINFO_PROPERTY_NAME++[`CachedIntrospectionResults`]
{api-spring-framework}++/beans/StandardBeanInfoFactory.html#IGNORE_BEANINFO_PROPERTY_NAME++[`CachedIntrospectionResults`]
for details.
| `spring.cache.reactivestreams.ignore`
| Instructs Spring's caching infrastructure to ignore the presence of Reactive Streams,
in particular Reactor's `Mono`/`Flux` in `@Cacheable` method return type declarations. See
{spring-framework-api}++/cache/interceptor/CacheAspectSupport.html#IGNORE_REACTIVESTREAMS_PROPERTY_NAME++[`CacheAspectSupport`]
for details.
| `spring.classformat.ignore`
| Instructs Spring to ignore class format exceptions during classpath scanning, in
particular for unsupported class file versions. See
{spring-framework-api}++/context/annotation/ClassPathScanningCandidateComponentProvider.html#IGNORE_CLASSFORMAT_PROPERTY_NAME++[`ClassPathScanningCandidateComponentProvider`]
for details.
| `spring.context.checkpoint`
| Property that specifies a common context checkpoint. See
xref:integration/checkpoint-restore.adoc#_automatic_checkpointrestore_at_startup[Automatic
checkpoint/restore at startup] and
{spring-framework-api}++/context/support/DefaultLifecycleProcessor.html#CHECKPOINT_PROPERTY_NAME++[`DefaultLifecycleProcessor`]
for details.
| `spring.context.exit`
| Property for terminating the JVM when the context reaches a specific phase. See
xref:integration/checkpoint-restore.adoc#_automatic_checkpointrestore_at_startup[Automatic
checkpoint/restore at startup] and
{spring-framework-api}++/context/support/DefaultLifecycleProcessor.html#EXIT_PROPERTY_NAME++[`DefaultLifecycleProcessor`]
for details.
| `spring.context.expression.maxLength`
| The maximum length for
xref:core/expressions/evaluation.adoc#expressions-parser-configuration[Spring Expression Language]
expressions used in XML bean definitions, `@Value`, etc.
| `spring.expression.compiler.mode`
| The mode to use when compiling expressions for the
xref:core/expressions/evaluation.adoc#expressions-compiler-configuration[Spring Expression Language].
@@ -74,9 +36,14 @@ xref:core/expressions/evaluation.adoc#expressions-compiler-configuration[Spring
| Instructs Spring to ignore operating system environment variables if a Spring
`Environment` property -- for example, a placeholder in a configuration String -- isn't
resolvable otherwise. See
{spring-framework-api}++/core/env/AbstractEnvironment.html#IGNORE_GETENV_PROPERTY_NAME++[`AbstractEnvironment`]
{api-spring-framework}++/core/env/AbstractEnvironment.html#IGNORE_GETENV_PROPERTY_NAME++[`AbstractEnvironment`]
for details.
| `spring.index.ignore`
| Instructs Spring to ignore the components index located in
`META-INF/spring.components`. See xref:core/beans/classpath-scanning.adoc#beans-scanning-index[Generating an Index of Candidate Components]
.
| `spring.jdbc.getParameterType.ignore`
| Instructs Spring to ignore `java.sql.ParameterMetaData.getParameterType` completely.
See the note in xref:data-access/jdbc/advanced.adoc#jdbc-batch-list[Batch Operations with a List of Objects].
@@ -85,35 +52,27 @@ See the note in xref:data-access/jdbc/advanced.adoc#jdbc-batch-list[Batch Operat
| Instructs Spring to ignore a default JNDI environment, as an optimization for scenarios
where nothing is ever to be found for such JNDI fallback searches to begin with, avoiding
the repeated JNDI lookup overhead. See
{spring-framework-api}++/jndi/JndiLocatorDelegate.html#IGNORE_JNDI_PROPERTY_NAME++[`JndiLocatorDelegate`]
{api-spring-framework}++/jndi/JndiLocatorDelegate.html#IGNORE_JNDI_PROPERTY_NAME++[`JndiLocatorDelegate`]
for details.
| `spring.objenesis.ignore`
| Instructs Spring to ignore Objenesis, not even attempting to use it. See
{spring-framework-api}++/objenesis/SpringObjenesis.html#IGNORE_OBJENESIS_PROPERTY_NAME++[`SpringObjenesis`]
{api-spring-framework}++/objenesis/SpringObjenesis.html#IGNORE_OBJENESIS_PROPERTY_NAME++[`SpringObjenesis`]
for details.
| `spring.test.aot.processing.failOnError`
| A boolean flag that controls whether errors encountered during AOT processing in the
_Spring TestContext Framework_ should result in an exception that fails the overall process.
See xref:testing/testcontext-framework/aot.adoc[Ahead of Time Support for Tests].
| `spring.test.constructor.autowire.mode`
| The default _test constructor autowire mode_ to use if `@TestConstructor` is not present
on a test class. See xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-testconstructor[Changing the default test constructor autowire mode].
on a test class. See xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-testconstructor[Changing the default test constructor autowire mode]
.
| `spring.test.context.cache.maxSize`
| The maximum size of the context cache in the _Spring TestContext Framework_. See
xref:testing/testcontext-framework/ctx-management/caching.adoc[Context Caching].
| `spring.test.context.failure.threshold`
| The failure threshold for errors encountered while attempting to load an `ApplicationContext`
in the _Spring TestContext Framework_. See
xref:testing/testcontext-framework/ctx-management/failure-threshold.adoc[Context Failure Threshold].
| `spring.test.enclosing.configuration`
| The default _enclosing configuration inheritance mode_ to use if
`@NestedTestConfiguration` is not present on a test class. See
xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-nestedtestconfiguration[Changing the default enclosing configuration inheritance mode].
xref:testing/annotations/integration-junit-jupiter.adoc#integration-testing-annotations-nestedtestconfiguration[Changing the default enclosing configuration inheritance mode]
.
|===
@@ -0,0 +1,20 @@
// Spring Portfolio
:docs-site: https://docs.spring.io
:docs-spring-boot: {docs-site}/spring-boot/docs/current/reference
:docs-spring-gemfire: {docs-site}/spring-gemfire/docs/current/reference
:docs-spring-security: {docs-site}/spring-security/reference
// spring-asciidoctor-backends Settings
:chomp: default headers packages
:fold: all
// Spring Framework
:docs-spring-framework: {docs-site}/spring-framework/docs/{spring-version}
:api-spring-framework: {docs-spring-framework}/javadoc-api/org/springframework
:docs-java: {docdir}/../../main/java/org/springframework/docs
:docs-kotlin: {docdir}/../../main/kotlin/org/springframework/docs
:docs-resources: {docdir}/../../main/resources
:spring-framework-main-code: https://github.com/spring-projects/spring-framework/tree/main
// Third-party Links
:docs-graalvm: https://www.graalvm.org/22.3/reference-manual
:gh-rsocket: https://github.com/rsocket
:gh-rsocket-extensions: {gh-rsocket}/rsocket/blob/master/Extensions
:gh-rsocket-java: {gh-rsocket}/rsocket-java
@@ -12,5 +12,5 @@ support for new custom advice types be added without changing the core framework
The only constraint on a custom `Advice` type is that it must implement the
`org.aopalliance.aop.Advice` marker interface.
See the {spring-framework-api}/aop/framework/adapter/package-summary.html[`org.springframework.aop.framework.adapter`]
See the {api-spring-framework}/aop/framework/adapter/package-summary.html[`org.springframework.aop.framework.adapter`]
javadoc for further information.
@@ -291,8 +291,6 @@ to consider:
* `final` classes cannot be proxied, because they cannot be extended.
* `final` methods cannot be advised, because they cannot be overridden.
* `private` methods cannot be advised, because they cannot be overridden.
* Methods that are not visible, typically package private methods in a parent class
from a different package, cannot be advised because they are effectively private.
NOTE: There is no need to add CGLIB to your classpath. CGLIB is repackaged and included
in the `spring-core` JAR. In other words, CGLIB-based AOP works "out of the box", as do
@@ -119,7 +119,7 @@ The following listing shows an example configuration:
Note that the target object (`businessObjectTarget` in the preceding example) must be a
prototype. This lets the `PoolingTargetSource` implementation create new instances
of the target to grow the pool as necessary. See the {spring-framework-api}/aop/target/AbstractPoolingTargetSource.html[javadoc of
of the target to grow the pool as necessary. See the {api-spring-framework}/aop/target/AbstractPoolingTargetSource.html[javadoc of
`AbstractPoolingTargetSource`] and the concrete subclass you wish to use for information
about its properties. `maxSize` is the most basic and is always guaranteed to be present.
@@ -221,8 +221,8 @@ NOTE: `ThreadLocal` instances come with serious issues (potentially resulting in
incorrectly using them in multi-threaded and multi-classloader environments. You
should always consider wrapping a `ThreadLocal` in some other class and never directly use
the `ThreadLocal` itself (except in the wrapper class). Also, you should
always remember to correctly set and unset (where the latter involves a call to
`ThreadLocal.remove()`) the resource local to the thread. Unsetting should be done in
always remember to correctly set and unset (where the latter simply involves a call to
`ThreadLocal.set(null)`) the resource local to the thread. Unsetting should be done in
any case, since not unsetting it might result in problematic behavior. Spring's
`ThreadLocal` support does this for you and should always be considered in favor of using
`ThreadLocal` instances without other proper handling code.
@@ -52,7 +52,7 @@ Kotlin::
----
======
See the {spring-framework-api}/aop/aspectj/annotation/AspectJProxyFactory.html[javadoc] for more information.
See the {api-spring-framework}/aop/aspectj/annotation/AspectJProxyFactory.html[javadoc] for more information.
@@ -4,7 +4,7 @@
@AspectJ refers to a style of declaring aspects as regular Java classes annotated with
annotations. The @AspectJ style was introduced by the
{aspectj-site}[AspectJ project] as part of the AspectJ 5 release. Spring
https://www.eclipse.org/aspectj[AspectJ project] as part of the AspectJ 5 release. Spring
interprets the same annotations as AspectJ 5, using a library supplied by AspectJ
for pointcut parsing and matching. The AOP runtime is still pure Spring AOP, though, and
there is no dependency on the AspectJ compiler or weaver.
@@ -482,7 +482,7 @@ The `JoinPoint` interface provides a number of useful methods:
* `getSignature()`: Returns a description of the method that is being advised.
* `toString()`: Prints a useful description of the method being advised.
See the {aspectj-api}/org/aspectj/lang/JoinPoint.html[javadoc] for more detail.
See the https://www.eclipse.org/aspectj/doc/released/runtime-api/org/aspectj/lang/JoinPoint.html[javadoc] for more detail.
[[aop-ataspectj-advice-params-passing]]
=== Passing Parameters to Advice
@@ -728,9 +728,14 @@ of determining parameter names, an exception will be thrown.
`StandardReflectionParameterNameDiscoverer` :: Uses the standard `java.lang.reflect.Parameter`
API to determine parameter names. Requires that code be compiled with the `-parameters`
flag for `javac`. Recommended approach on Java 8+.
`LocalVariableTableParameterNameDiscoverer` :: Analyzes the local variable table available
in the byte code of the advice class to determine parameter names from debug information.
Requires that code be compiled with debug symbols (`-g:vars` at a minimum). Deprecated
as of Spring Framework 6.0 for removal in Spring Framework 6.1 in favor of compiling
code with `-parameters`. Not supported in a GraalVM native image.
`AspectJAdviceParameterNameDiscoverer` :: Deduces parameter names from the pointcut
expression, `returning`, and `throwing` clauses. See the
{spring-framework-api}/aop/aspectj/AspectJAdviceParameterNameDiscoverer.html[javadoc]
{api-spring-framework}/aop/aspectj/AspectJAdviceParameterNameDiscoverer.html[javadoc]
for details on the algorithm used.
[[aop-ataspectj-advice-params-names-explicit]]
@@ -36,9 +36,9 @@ Kotlin::
The pointcut expression that forms the value of the `@Pointcut` annotation is a regular
AspectJ pointcut expression. For a full discussion of AspectJ's pointcut language, see
the {aspectj-docs-progguide}/index.html[AspectJ
the https://www.eclipse.org/aspectj/doc/released/progguide/index.html[AspectJ
Programming Guide] (and, for extensions, the
{aspectj-docs}/adk15notebook/index.html[AspectJ 5
https://www.eclipse.org/aspectj/doc/released/adk15notebook/index.html[AspectJ 5
Developer's Notebook]) or one of the books on AspectJ (such as _Eclipse AspectJ_, by Colyer
et al., or _AspectJ in Action_, by Ramnivas Laddad).
@@ -392,7 +392,7 @@ method that takes no parameters, whereas `(..)` matches any number (zero or more
The `({asterisk})` pattern matches a method that takes one parameter of any type.
`(*,String)` matches a method that takes two parameters. The first can be of any type, while the
second must be a `String`. Consult the
{aspectj-docs-progguide}/semantics-pointcuts.html[Language
https://www.eclipse.org/aspectj/doc/released/progguide/semantics-pointcuts.html[Language
Semantics] section of the AspectJ Programming Guide for more information.
The following examples show some common pointcut expressions:
@@ -31,7 +31,7 @@ However, it would be even more confusing if Spring used its own terminology.
the "advised object". Since Spring AOP is implemented by using runtime proxies, this
object is always a proxied object.
* AOP proxy: An object created by the AOP framework in order to implement the aspect
contracts (advice method executions and so on). In the Spring Framework, an AOP proxy
contracts (advise method executions and so on). In the Spring Framework, an AOP proxy
is a JDK dynamic proxy or a CGLIB proxy.
* Weaving: linking aspects with other application types or objects to create an
advised object. This can be done at compile time (using the AspectJ compiler, for
@@ -19,10 +19,6 @@ you can do so. However, you should consider the following issues:
since the CGLIB proxy instance is created through Objenesis. Only if your JVM does
not allow for constructor bypassing, you might see double invocations and
corresponding debug log entries from Spring's AOP support.
* Your CGLIB proxy usage may face limitations with the JDK 9+ platform module system.
As a typical case, you cannot create a CGLIB proxy for a class from the `java.lang`
package when deploying on the module path. Such cases require a JVM bootstrap flag
`--add-opens=java.base/java.lang=ALL-UNNAMED` which is not available for modules.
To force the use of CGLIB proxies, set the value of the `proxy-target-class` attribute
of the `<aop:config>` element to true, as follows:
@@ -2,7 +2,7 @@
= Further Resources
:page-section-summary-toc: 1
More information on AspectJ can be found on the {aspectj-site}[AspectJ website].
More information on AspectJ can be found on the https://www.eclipse.org/aspectj[AspectJ website].
_Eclipse AspectJ_ by Adrian Colyer et. al. (Addison-Wesley, 2005) provides a
comprehensive introduction and reference for the AspectJ language.
@@ -136,7 +136,7 @@ using Spring in accordance with the properties of the annotation". In this conte
"initialization" refers to newly instantiated objects (for example, objects instantiated
with the `new` operator) as well as to `Serializable` objects that are undergoing
deserialization (for example, through
{java-api}/java.base/java/io/Serializable.html[readResolve()]).
https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html[readResolve()]).
[NOTE]
=====
@@ -168,13 +168,14 @@ Kotlin::
You can find more information about the language semantics of the various pointcut
types in AspectJ
{aspectj-docs-progguide}/semantics-joinPoints.html[in this appendix] of the
{aspectj-docs-progguide}/index.html[AspectJ Programming Guide].
https://www.eclipse.org/aspectj/doc/next/progguide/semantics-joinPoints.html[in this
appendix] of the https://www.eclipse.org/aspectj/doc/next/progguide/index.html[AspectJ
Programming Guide].
=====
For this to work, the annotated types must be woven with the AspectJ weaver. You can
either use a build-time Ant or Maven task to do this (see, for example, the
{aspectj-docs-devguide}/antTasks.html[AspectJ Development
https://www.eclipse.org/aspectj/doc/released/devguide/antTasks.html[AspectJ Development
Environment Guide]) or load-time weaving (see xref:core/aop/using-aspectj.adoc#aop-aj-ltw[Load-time Weaving with AspectJ in the Spring Framework]). The
`AnnotationBeanConfigurerAspect` itself needs to be configured by Spring (in order to obtain
a reference to the bean factory that is to be used to configure new objects). If you
@@ -398,7 +399,7 @@ The focus of this section is on configuring and using LTW in the specific contex
Spring Framework. This section is not a general introduction to LTW. For full details on
the specifics of LTW and configuring LTW with only AspectJ (with Spring not being
involved at all), see the
{aspectj-docs-devguide}/ltw.html[LTW section of the AspectJ
https://www.eclipse.org/aspectj/doc/released/devguide/ltw.html[LTW section of the AspectJ
Development Environment Guide].
The value that the Spring Framework brings to AspectJ LTW is in enabling much
@@ -420,7 +421,7 @@ who typically are in charge of the deployment configuration, such as the launch
Now that the sales pitch is over, let us first walk through a quick example of AspectJ
LTW that uses Spring, followed by detailed specifics about elements introduced in the
example. For a complete example, see the
{spring-github-org}/spring-petclinic[Petclinic sample application].
https://github.com/spring-projects/spring-petclinic[Petclinic sample application].
[[aop-aj-ltw-first-example]]
@@ -521,8 +522,8 @@ standard AspectJ. The following example shows the `aop.xml` file:
<aspectj>
<weaver>
<!-- only weave classes in our application-specific packages and sub-packages -->
<include within="com.xyz..*"/>
<!-- only weave classes in our application-specific packages -->
<include within="com.xyz.*"/>
</weaver>
<aspects>
@@ -533,11 +534,6 @@ standard AspectJ. The following example shows the `aop.xml` file:
</aspectj>
----
NOTE: It is recommended to only weave specific classes (typically those in the
application packages, as shown in the `aop.xml` example above) in order
to avoid side effects such as AspectJ dump files and warnings.
This is also a best practice from an efficiency perspective.
Now we can move on to the Spring-specific portion of the configuration. We need
to configure a `LoadTimeWeaver` (explained later). This load-time weaver is the
essential component responsible for weaving the aspect configuration in one or
@@ -625,7 +621,7 @@ java -javaagent:C:/projects/xyz/lib/spring-instrument.jar com.xyz.Main
----
The `-javaagent` is a flag for specifying and enabling
{java-api}/java.instrument/java/lang/instrument/package-summary.html[agents
https://docs.oracle.com/javase/8/docs/api/java/lang/instrument/package-summary.html[agents
to instrument programs that run on the JVM]. The Spring Framework ships with such an
agent, the `InstrumentationSavingAgent`, which is packaged in the
`spring-instrument.jar` that was supplied as the value of the `-javaagent` argument in
@@ -719,32 +715,13 @@ Furthermore, the compiled aspect classes need to be available on the classpath.
[[aop-aj-ltw-aop_dot_xml]]
=== `META-INF/aop.xml`
=== 'META-INF/aop.xml'
The AspectJ LTW infrastructure is configured by using one or more `META-INF/aop.xml`
files that are on the Java classpath (either directly or, more typically, in jar files).
For example:
[source,xml,indent=0,subs="verbatim"]
----
<!DOCTYPE aspectj PUBLIC "-//AspectJ//DTD//EN" "https://www.eclipse.org/aspectj/dtd/aspectj.dtd">
<aspectj>
<weaver>
<!-- only weave classes in our application-specific packages and sub-packages -->
<include within="com.xyz..*"/>
</weaver>
</aspectj>
----
NOTE: It is recommended to only weave specific classes (typically those in the
application packages, as shown in the `aop.xml` example above) in order
to avoid side effects such as AspectJ dump files and warnings.
This is also a best practice from an efficiency perspective.
The structure and contents of this file is detailed in the LTW part of the
{aspectj-docs-devguide}/ltw-configuration.html[AspectJ reference
https://www.eclipse.org/aspectj/doc/released/devguide/ltw-configuration.html[AspectJ reference
documentation]. Because the `aop.xml` file is 100% AspectJ, we do not describe it further here.
+21 -117
View File
@@ -15,13 +15,10 @@ Applying such optimizations early implies the following restrictions:
* The classpath is fixed and fully defined at build time.
* The beans defined in your application cannot change at runtime, meaning:
** `@Profile`, in particular profile-specific configuration, needs to be chosen at build time and is automatically enabled at runtime when AOT is enabled.
** `@Profile`, in particular profile-specific configuration needs to be chosen at build time.
** `Environment` properties that impact the presence of a bean (`@Conditional`) are only considered at build time.
* Bean definitions with instance suppliers (lambdas or method references) cannot be transformed ahead-of-time.
* Beans registered as singletons (using `registerSingleton`, typically from
`ConfigurableListableBeanFactory`) cannot be transformed ahead-of-time either.
* As we cannot rely on the instance, make sure that the bean type is as precise as
possible.
* Bean definitions with instance suppliers (lambdas or method references) cannot be transformed ahead-of-time (see related https://github.com/spring-projects/spring-framework/issues/29555[spring-framework#29555] issue).
* Make sure that the bean type is as precise as possible.
TIP: See also the xref:core/aot.adoc#aot.bestpractices[] section.
@@ -30,7 +27,7 @@ A Spring AOT processed application typically generates:
* Java source code
* Bytecode (usually for dynamic proxies)
* {spring-framework-api}/aot/hint/RuntimeHints.html[`RuntimeHints`] for the use of reflection, resource loading, serialization, and JDK proxies
* {api-spring-framework}/aot/hint/RuntimeHints.html[`RuntimeHints`] for the use of reflection, resource loading, serialization, and JDK proxies.
NOTE: At the moment, AOT is focused on allowing Spring applications to be deployed as native images using GraalVM.
We intend to support more JVM-based use cases in future generations.
@@ -38,7 +35,7 @@ We intend to support more JVM-based use cases in future generations.
[[aot.basics]]
== AOT engine overview
The entry point of the AOT engine for processing an `ApplicationContext` is `ApplicationContextAotGenerator`. It takes care of the following steps, based on a `GenericApplicationContext` that represents the application to optimize and a {spring-framework-api}/aot/generate/GenerationContext.html[`GenerationContext`]:
The entry point of the AOT engine for processing an `ApplicationContext` arrangement is `ApplicationContextAotGenerator`. It takes care of the following steps, based on a `GenericApplicationContext` that represents the application to optimize and a {api-spring-framework}/aot/generate/GenerationContext.html[`GenerationContext`]:
* Refresh an `ApplicationContext` for AOT processing. Contrary to a traditional refresh, this version only creates bean definitions, not bean instances.
* Invoke the available `BeanFactoryInitializationAotProcessor` implementations and apply their contributions against the `GenerationContext`.
@@ -70,14 +67,7 @@ include-code::./AotProcessingSample[tag=aotcontext]
In this mode, xref:core/beans/factory-extension.adoc#beans-factory-extension-factory-postprocessors[`BeanFactoryPostProcessor` implementations] are invoked as usual.
This includes configuration class parsing, import selectors, classpath scanning, etc.
Such steps make sure that the `BeanRegistry` contains the relevant bean definitions for the application.
If bean definitions are guarded by conditions (such as `@Profile`), these are evaluated,
and bean definitions that don't match their conditions are discarded at this stage.
If custom code needs to register extra beans programmatically, make sure that custom
registration code uses `BeanDefinitionRegistry` instead of `BeanFactory` as only bean
definitions are taken into account. A good pattern is to implement
`ImportBeanDefinitionRegistrar` and register it via an `@Import` on one of your
configuration classes.
If bean definitions are guarded by conditions (such as `@Profile`), these are discarded at this stage.
Because this mode does not actually create bean instances, `BeanPostProcessor` implementations are not invoked, except for specific variants that are relevant for AOT processing.
These are:
@@ -91,15 +81,15 @@ Once this part completes, the `BeanFactory` contains the bean definitions that a
[[aot.bean-factory-initialization-contributions]]
== Bean Factory Initialization AOT Contributions
Components that want to participate in this step can implement the {spring-framework-api}/beans/factory/aot/BeanFactoryInitializationAotProcessor.html[`BeanFactoryInitializationAotProcessor`] interface.
Components that want to participate in this step can implement the {api-spring-framework}/beans/factory/aot/BeanFactoryInitializationAotProcessor.html[`BeanFactoryInitializationAotProcessor`] interface.
Each implementation can return an AOT contribution, based on the state of the bean factory.
An AOT contribution is a component that contributes generated code which reproduces a particular behavior.
An AOT contribution is a component that contributes generated code that reproduces a particular behavior.
It can also contribute `RuntimeHints` to indicate the need for reflection, resource loading, serialization, or JDK proxies.
A `BeanFactoryInitializationAotProcessor` implementation can be registered in `META-INF/spring/aot.factories` with a key equal to the fully-qualified name of the interface.
A `BeanFactoryInitializationAotProcessor` implementation can be registered in `META-INF/spring/aot.factories` with a key equal to the fully qualified name of the interface.
The `BeanFactoryInitializationAotProcessor` interface can also be implemented directly by a bean.
A `BeanFactoryInitializationAotProcessor` can also be implemented directly by a bean.
In this mode, the bean provides an AOT contribution equivalent to the feature it provides with a regular runtime.
Consequently, such a bean is automatically excluded from the AOT-optimized context.
@@ -121,7 +111,7 @@ This interface is used as follows:
* Implemented by a `BeanPostProcessor` bean, to replace its runtime behavior.
For instance xref:core/beans/factory-extension.adoc#beans-factory-extension-bpp-examples-aabpp[`AutowiredAnnotationBeanPostProcessor`] implements this interface to generate code that injects members annotated with `@Autowired`.
* Implemented by a type registered in `META-INF/spring/aot.factories` with a key equal to the fully-qualified name of the interface.
* Implemented by a type registered in `META-INF/spring/aot.factories` with a key equal to the fully qualified name of the interface.
Typically used when the bean definition needs to be tuned for specific features of the core framework.
[NOTE]
@@ -152,23 +142,8 @@ Java::
}
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
@Configuration(proxyBeanMethods = false)
class DataSourceConfiguration {
@Bean
fun dataSource() = SimpleDataSource()
}
----
======
WARNING: Kotlin class names with backticks that use invalid Java identifiers (not starting with a letter, containing spaces, etc.) are not supported.
Since there isn't any particular condition on this class, `dataSourceConfiguration` and `dataSource` are identified as candidates.
The AOT engine will convert the configuration class above to code similar to the following:
@@ -181,7 +156,6 @@ Java::
/**
* Bean definitions for {@link DataSourceConfiguration}
*/
@Generated
public class DataSourceConfiguration__BeanDefinitions {
/**
* Get the bean definition for 'dataSourceConfiguration'
@@ -216,25 +190,11 @@ Java::
NOTE: The exact code generated may differ depending on the exact nature of your bean definitions.
TIP: Each generated class is annotated with `org.springframework.aot.generate.Generated` to
identify them if they need to be excluded, for instance by static analysis tools.
The generated code above creates bean definitions equivalent to the `@Configuration` class, but in a direct way and without the use of reflection if at all possible.
There is a bean definition for `dataSourceConfiguration` and one for `dataSourceBean`.
When a `datasource` instance is required, a `BeanInstanceSupplier` is called.
This supplier invokes the `dataSource()` method on the `dataSourceConfiguration` bean.
[[aot.running]]
== Running with AOT optimizations
AOT is a mandatory step to transform a Spring application to a native executable, so it
is automatically enabled when running in this mode. It is possible to use those optimizations
on the JVM by setting the `spring.aot.enabled` System property to `true`.
NOTE: When AOT optimizations are included, some decisions that have been taken at build-time
are hard-coded in the application setup. For instance, profiles that have been enabled at
build-time are automatically enabled at runtime as well.
[[aot.bestpractices]]
== Best Practices
@@ -243,33 +203,11 @@ However, keep in mind that some optimizations are made at build time based on a
This section lists the best practices that make sure your application is ready for AOT.
[[aot.bestpractices.bean-registration]]
== Programmatic bean registration
The AOT engine takes care of the `@Configuration` model and any callback that might be
invoked as part of processing your configuration. If you need to register additional
beans programmatically, make sure to use a `BeanDefinitionRegistry` to register
bean definitions.
This can typically be done via a `BeanDefinitionRegistryPostProcessor`. Note that, if it
is registered itself as a bean, it will be invoked again at runtime unless you make
sure to implement `BeanFactoryInitializationAotProcessor` as well. A more idiomatic
way is to implement `ImportBeanDefinitionRegistrar` and register it using `@Import` on
one of your configuration classes. This invokes your custom code as part of configuration
class parsing.
If you declare additional beans programmatically using a different callback, they are
likely not going to be handled by the AOT engine, and therefore no hints are going to be
generated for them. Depending on the environment, those beans may not be registered at
all. For instance, classpath scanning does not work in a native image as there is no
notion of a classpath. For cases like this, it is crucial that the scanning happens at
build time.
[[aot.bestpractices.bean-type]]
=== Expose The Most Precise Bean Type
While your application may interact with an interface that a bean implements, it is still very important to declare the most precise type.
The AOT engine performs additional checks on the bean type, such as detecting the presence of `@Autowired` members or lifecycle callback methods.
The AOT engine performs additional checks on the bean type, such as detecting the presence of `@Autowired` members, or lifecycle callback methods.
For `@Configuration` classes, make sure that the return type of the factory `@Bean` method is as precise as possible.
Consider the following example:
@@ -318,40 +256,6 @@ Java::
If you are registering bean definitions programmatically, consider using `RootBeanBefinition` as it allows to specify a `ResolvableType` that handles generics.
[[aot.bestpractices.constructors]]
=== Avoid Multiple Constructors
The container is able to choose the most appropriate constructor to use based on several candidates.
However, this is not a best practice and flagging the preferred constructor with `@Autowired` if necessary is preferred.
In case you are working on a code base that you cannot modify, you can set the {spring-framework-api}/beans/factory/support/AbstractBeanDefinition.html#PREFERRED_CONSTRUCTORS_ATTRIBUTE[`preferredConstructors` attribute] on the related bean definition to indicate which constructor should be used.
[[aot.bestpractices.comlext-data-structure]]
=== Avoid Complex Data Structure for Constructor Parameters and Properties
When crafting a `RootBeanDefinition` programmatically, you are not constrained in terms of types that you can use.
For instance, you may have a custom `record` with several properties that your bean takes as a constructor argument.
While this works fine with the regular runtime, AOT does not know how to generate the code of your custom data structure.
A good rule of thumb is to keep in mind that bean definitions are an abstraction on top of several models.
Rather than using such structure, decomposing to simple types or referring to a bean that is built as such is recommended.
As a last resort, you can implement your own `org.springframework.aot.generate.ValueCodeGenerator$Delegate`.
To use it, register its fully qualified name in `META-INF/spring/aot.factories` using the `Delegate` as the key.
[[aot.bestpractices.custom-arguments]]
=== Avoid Creating Bean with Custom Arguments
Spring AOT detects what needs to be done to create a bean and translates that in generated code using an instance supplier.
The container also supports creating a bean with {spring-framework-api}++/beans/factory/BeanFactory.html#getBean(java.lang.String,java.lang.Object...)++[custom arguments] that leads to several issues with AOT:
. The custom arguments require dynamic introspection of a matching constructor or factory method.
Those arguments cannot be detected by AOT, so the necessary reflection hints will have to be provided manually.
. By-passing the instance supplier means that all other optimizations after creation are skipped as well.
For instance, autowiring on fields and methods will be skipped as they are handled in the instance supplier.
Rather than having prototype-scoped beans created with custom arguments, we recommend a manual factory pattern where a bean is responsible for the creation of the instance.
[[aot.bestpractices.factory-bean]]
=== FactoryBean
@@ -368,7 +272,7 @@ Java::
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
public class ClientFactoryBean<T extends AbstractClient> implements FactoryBean<T> {
// ...
}
----
======
@@ -465,10 +369,10 @@ Java::
Running an application as a native image requires additional information compared to a regular JVM runtime.
For instance, GraalVM needs to know ahead of time if a component uses reflection.
Similarly, classpath resources are not included in a native image unless specified explicitly.
Similarly, classpath resources are not shipped in a native image unless specified explicitly.
Consequently, if the application needs to load a resource, it must be referenced from the corresponding GraalVM native image configuration file.
The {spring-framework-api}/aot/hint/RuntimeHints.html[`RuntimeHints`] API collects the need for reflection, resource loading, serialization, and JDK proxies at runtime.
The {api-spring-framework}/aot/hint/RuntimeHints.html[`RuntimeHints`] API collects the need for reflection, resource loading, serialization, and JDK proxies at runtime.
The following example makes sure that `config/app.properties` can be loaded from the classpath at runtime within a native image:
[tabs]
@@ -500,16 +404,16 @@ include-code::./SpellCheckService[]
If at all possible, `@ImportRuntimeHints` should be used as close as possible to the component that requires the hints.
This way, if the component is not contributed to the `BeanFactory`, the hints won't be contributed either.
It is also possible to register an implementation statically by adding an entry in `META-INF/spring/aot.factories` with a key equal to the fully-qualified name of the `RuntimeHintsRegistrar` interface.
It is also possible to register an implementation statically by adding an entry in `META-INF/spring/aot.factories` with a key equal to the fully qualified name of the `RuntimeHintsRegistrar` interface.
[[aot.hints.reflective]]
=== `@Reflective`
{spring-framework-api}/aot/hint/annotation/Reflective.html[`@Reflective`] provides an idiomatic way to flag the need for reflection on an annotated element.
{api-spring-framework}/aot/hint/annotation/Reflective.html[`@Reflective`] provides an idiomatic way to flag the need for reflection on an annotated element.
For instance, `@EventListener` is meta-annotated with `@Reflective` since the underlying implementation invokes the annotated method using reflection.
By default, only Spring beans are considered, and an invocation hint is registered for the annotated element.
By default, only Spring beans are considered and an invocation hint is registered for the annotated element.
This can be tuned by specifying a custom `ReflectiveProcessor` implementation via the
`@Reflective` annotation.
@@ -520,7 +424,7 @@ If components other than Spring beans need to be processed, a `BeanFactoryInitia
[[aot.hints.register-reflection-for-binding]]
=== `@RegisterReflectionForBinding`
{spring-framework-api}/aot/hint/annotation/RegisterReflectionForBinding.html[`@RegisterReflectionForBinding`] is a specialization of `@Reflective` that registers the need for serializing arbitrary types.
{api-spring-framework}/aot/hint/annotation/RegisterReflectionForBinding.html[`@RegisterReflectionForBinding`] is a specialization of `@Reflective` that registers the need for serializing arbitrary types.
A typical use case is the use of DTOs that the container cannot infer, such as using a web client within a method body.
`@RegisterReflectionForBinding` can be applied to any Spring bean at the class level, but it can also be applied directly to a method, field, or constructor to better indicate where the hints are actually required.
@@ -556,7 +460,7 @@ include-code::./SpellCheckServiceTests[tag=hintspredicates]
With `RuntimeHintsPredicates`, we can check for reflection, resource, serialization, or proxy generation hints.
This approach works well for unit tests but implies that the runtime behavior of a component is well known.
You can learn more about the global runtime behavior of an application by running its test suite (or the app itself) with the {graalvm-docs}/native-image/metadata/AutomaticMetadataCollection/[GraalVM tracing agent].
You can learn more about the global runtime behavior of an application by running its test suite (or the app itself) with the {docs-graalvm}/native-image/metadata/AutomaticMetadataCollection/[GraalVM tracing agent].
This agent will record all relevant calls requiring GraalVM hints at runtime and write them out as JSON configuration files.
For more targeted discovery and testing, Spring Framework ships a dedicated module with core AOT testing utilities, `"org.springframework:spring-core-test"`.
@@ -588,4 +492,4 @@ io.spring.runtimehintstesting.SampleReflectionRuntimeHintsTests#lambda$shouldReg
There are various ways to configure this Java agent in your build, so please refer to the documentation of your build tool and test execution plugin.
The agent itself can be configured to instrument specific packages (by default, only `org.springframework` is instrumented).
You'll find more details in the {spring-framework-code}/buildSrc/README.md[Spring Framework `buildSrc` README] file.
You'll find more details in the {spring-framework-main-code}/buildSrc/README.md[Spring Framework `buildSrc` README] file.
@@ -765,7 +765,7 @@ want to add an additional attribute to the existing bean definition element.
By way of another example, suppose that you define a bean definition for a
service object that (unknown to it) accesses a clustered
{JSR}107[JCache], and you want to ensure that the
https://jcp.org/en/jsr/detail?id=107[JCache], and you want to ensure that the
named JCache instance is eagerly started within the surrounding cluster.
The following listing shows such a definition:
@@ -66,13 +66,13 @@ developer's intent ("`inject this constant value`"), and it reads better:
[[xsd-schemas-util-frfb]]
==== Setting a Bean Property or Constructor Argument from a Field Value
{spring-framework-api}/beans/factory/config/FieldRetrievingFactoryBean.html[`FieldRetrievingFactoryBean`]
{api-spring-framework}/beans/factory/config/FieldRetrievingFactoryBean.html[`FieldRetrievingFactoryBean`]
is a `FactoryBean` that retrieves a `static` or non-static field value. It is typically
used for retrieving `public` `static` `final` constants, which may then be used to set a
property value or constructor argument for another bean.
The following example shows how a `static` field is exposed, by using the
{spring-framework-api}/beans/factory/config/FieldRetrievingFactoryBean.html#setStaticField(java.lang.String)[`staticField`]
{api-spring-framework}/beans/factory/config/FieldRetrievingFactoryBean.html#setStaticField(java.lang.String)[`staticField`]
property:
[source,xml,indent=0,subs="verbatim,quotes"]
@@ -109,7 +109,7 @@ to be specified for the bean reference, as the following example shows:
You can also access a non-static (instance) field of another bean, as
described in the API documentation for the
{spring-framework-api}/beans/factory/config/FieldRetrievingFactoryBean.html[`FieldRetrievingFactoryBean`]
{api-spring-framework}/beans/factory/config/FieldRetrievingFactoryBean.html[`FieldRetrievingFactoryBean`]
class.
Injecting enumeration values into beans as either property or constructor arguments is
@@ -1,16 +1,33 @@
[[beans-annotation-config]]
= Annotation-based Container Configuration
Spring provides comprehensive support for annotation-based configuration, operating on
metadata in the component class itself by using annotations on the relevant class,
method, or field declaration. As mentioned in
xref:core/beans/factory-extension.adoc#beans-factory-extension-bpp-examples-aabpp[Example: The `AutowiredAnnotationBeanPostProcessor`],
Spring uses `BeanPostProcessors` in conjunction with annotations to make the core IOC
container aware of specific annotations.
.Are annotations better than XML for configuring Spring?
****
The introduction of annotation-based configuration raised the question of whether this
approach is "`better`" than XML. The short answer is "`it depends.`" The long answer is
that each approach has its pros and cons, and, usually, it is up to the developer to
decide which strategy suits them better. Due to the way they are defined, annotations
provide a lot of context in their declaration, leading to shorter and more concise
configuration. However, XML excels at wiring up components without touching their source
code or recompiling them. Some developers prefer having the wiring close to the source
while others argue that annotated classes are no longer POJOs and, furthermore, that the
configuration becomes decentralized and harder to control.
For example, the xref:core/beans/annotation-config/autowired.adoc[`@Autowired`]
annotation provides the same capabilities as described in
xref:core/beans/dependencies/factory-autowire.adoc[Autowiring Collaborators] but
No matter the choice, Spring can accommodate both styles and even mix them together.
It is worth pointing out that through its xref:core/beans/java.adoc[JavaConfig] option, Spring lets
annotations be used in a non-invasive way, without touching the target components'
source code and that, in terms of tooling, all configuration styles are supported by
https://spring.io/tools[Spring Tools] for Eclipse, Visual Studio Code, and Theia.
****
An alternative to XML setup is provided by annotation-based configuration, which relies
on bytecode metadata for wiring up components instead of XML declarations. Instead of
using XML to describe a bean wiring, the developer moves the configuration into the
component class itself by using annotations on the relevant class, method, or field
declaration. As mentioned in xref:core/beans/factory-extension.adoc#beans-factory-extension-bpp-examples-aabpp[Example: The `AutowiredAnnotationBeanPostProcessor`], using a
`BeanPostProcessor` in conjunction with annotations is a common means of extending the
Spring IoC container. For example, the xref:core/beans/annotation-config/autowired.adoc[`@Autowired`]
annotation provides the same capabilities as described in xref:core/beans/dependencies/factory-autowire.adoc[Autowiring Collaborators] but
with more fine-grained control and wider applicability. In addition, Spring provides
support for JSR-250 annotations, such as `@PostConstruct` and `@PreDestroy`, as well as
support for JSR-330 (Dependency Injection for Java) annotations contained in the
@@ -19,16 +36,13 @@ can be found in the xref:core/beans/standard-annotations.adoc[relevant section].
[NOTE]
====
Annotation injection is performed before external property injection. Thus, external
configuration (e.g. XML-specified bean properties) effectively overrides the annotations
for properties when wired through mixed approaches.
Annotation injection is performed before XML injection. Thus, the XML configuration
overrides the annotations for properties wired through both approaches.
====
Technically, you can register the post-processors as individual bean definitions, but they
are implicitly registered in an `AnnotationConfigApplicationContext` already.
In an XML-based Spring setup, you may include the following configuration tag to enable
mixing and matching with annotation-based configuration:
As always, you can register the post-processors as individual bean definitions, but they
can also be implicitly registered by including the following tag in an XML-based Spring
configuration (notice the inclusion of the `context` namespace):
[source,xml,indent=0,subs="verbatim,quotes"]
----
@@ -48,11 +62,11 @@ mixing and matching with annotation-based configuration:
The `<context:annotation-config/>` element implicitly registers the following post-processors:
* {spring-framework-api}/context/annotation/ConfigurationClassPostProcessor.html[`ConfigurationClassPostProcessor`]
* {spring-framework-api}/beans/factory/annotation/AutowiredAnnotationBeanPostProcessor.html[`AutowiredAnnotationBeanPostProcessor`]
* {spring-framework-api}/context/annotation/CommonAnnotationBeanPostProcessor.html[`CommonAnnotationBeanPostProcessor`]
* {spring-framework-api}/orm/jpa/support/PersistenceAnnotationBeanPostProcessor.html[`PersistenceAnnotationBeanPostProcessor`]
* {spring-framework-api}/context/event/EventListenerMethodProcessor.html[`EventListenerMethodProcessor`]
* {api-spring-framework}/context/annotation/ConfigurationClassPostProcessor.html[`ConfigurationClassPostProcessor`]
* {api-spring-framework}/beans/factory/annotation/AutowiredAnnotationBeanPostProcessor.html[`AutowiredAnnotationBeanPostProcessor`]
* {api-spring-framework}/context/annotation/CommonAnnotationBeanPostProcessor.html[`CommonAnnotationBeanPostProcessor`]
* {api-spring-framework}/orm/jpa/support/PersistenceAnnotationBeanPostProcessor.html[`PersistenceAnnotationBeanPostProcessor`]
* {api-spring-framework}/context/event/EventListenerMethodProcessor.html[`EventListenerMethodProcessor`]
[NOTE]
====
@@ -156,7 +156,8 @@ for a non-unique dependency situation, Spring matches the injection point name
(that is, the field name or parameter name) against the target bean names and chooses
the same-named candidate, if any (either by bean name or by associated alias).
Since version 6.1, this requires the `-parameters` Java compiler flag to be present.
This requires the `-parameters` Java compiler flag to be present. As a fallback,
version 6.0 still supports parameter names from debug symbols via `-debug` as well.
====
As an alternative for injection by name, consider the JSR-250 `@Resource` annotation
@@ -186,15 +186,6 @@ implementation type, consider declaring the most specific return type on your fa
method (at least as specific as required by the injection points referring to your bean).
====
[NOTE]
====
As of 4.3, `@Autowired` also considers self references for injection (that is, references
back to the bean that is currently injected). Note that self injection is a fallback.
In practice, you should use self references as a last resort only (for example, for
calling other methods on the same instance through the bean's transactional proxy).
Consider factoring out the affected methods to a separate delegate bean in such a scenario.
====
You can also instruct Spring to provide all beans of a particular type from the
`ApplicationContext` by adding the `@Autowired` annotation to a field or method that
expects an array of that type, as the following example shows:
@@ -277,12 +268,6 @@ use the same bean class). `@Order` values may influence priorities at injection
but be aware that they do not influence singleton startup order, which is an
orthogonal concern determined by dependency relationships and `@DependsOn` declarations.
Note that `@Order` annotations on configuration classes just influence the evaluation
order within the overall set of configuration classes on startup. Such configuration-level
order values do not affect the contained `@Bean` methods at all. For bean-level ordering,
each `@Bean` method needs to have its own `@Order` annotation which applies within a
set of multiple matches for the specific bean type (as returned by the factory method).
Note that the standard `jakarta.annotation.Priority` annotation is not available at the
`@Bean` level, since it cannot be declared on methods. Its semantics can be modeled
through `@Order` values in combination with `@Primary` on a single bean for each type.
@@ -1,7 +1,7 @@
[[beans-custom-autowire-configurer]]
= Using `CustomAutowireConfigurer`
{spring-framework-api}/beans/factory/annotation/CustomAutowireConfigurer.html[`CustomAutowireConfigurer`]
{api-spring-framework}/beans/factory/annotation/CustomAutowireConfigurer.html[`CustomAutowireConfigurer`]
is a `BeanFactoryPostProcessor` that lets you register your own custom qualifier
annotation types, even if they are not annotated with Spring's `@Qualifier` annotation.
The following example shows how to use `CustomAutowireConfigurer`:
@@ -84,7 +84,7 @@ Kotlin::
NOTE: The name provided with the annotation is resolved as a bean name by the
`ApplicationContext` of which the `CommonAnnotationBeanPostProcessor` is aware.
The names can be resolved through JNDI if you configure Spring's
{spring-framework-api}/jndi/support/SimpleJndiBeanFactory.html[`SimpleJndiBeanFactory`]
{api-spring-framework}/jndi/support/SimpleJndiBeanFactory.html[`SimpleJndiBeanFactory`]
explicitly. However, we recommend that you rely on the default behavior and
use Spring's JNDI lookup capabilities to preserve the level of indirection.
@@ -2,28 +2,36 @@
= Container Overview
The `org.springframework.context.ApplicationContext` interface represents the Spring IoC
container and is responsible for instantiating, configuring, and assembling the beans.
The container gets its instructions on the components to instantiate, configure, and
assemble by reading configuration metadata. The configuration metadata can be represented
as annotated component classes, configuration classes with factory methods, or external
XML files or Groovy scripts. With either format, you may compose your application and the
rich interdependencies between those components.
container and is responsible for instantiating, configuring, and assembling the
beans. The container gets its instructions on what objects to
instantiate, configure, and assemble by reading configuration metadata. The
configuration metadata is represented in XML, Java annotations, or Java code. It lets
you express the objects that compose your application and the rich interdependencies
between those objects.
Several implementations of the `ApplicationContext` interface are part of core Spring.
In stand-alone applications, it is common to create an instance of
{spring-framework-api}/context/annotation/AnnotationConfigApplicationContext.html[`AnnotationConfigApplicationContext`]
or {spring-framework-api}/context/support/ClassPathXmlApplicationContext.html[`ClassPathXmlApplicationContext`].
Several implementations of the `ApplicationContext` interface are supplied
with Spring. In stand-alone applications, it is common to create an
instance of
{api-spring-framework}/context/support/ClassPathXmlApplicationContext.html[`ClassPathXmlApplicationContext`]
or {api-spring-framework}/context/support/FileSystemXmlApplicationContext.html[`FileSystemXmlApplicationContext`].
While XML has been the traditional format for defining configuration metadata, you can
instruct the container to use Java annotations or code as the metadata format by
providing a small amount of XML configuration to declaratively enable support for these
additional metadata formats.
In most application scenarios, explicit user code is not required to instantiate one or
more instances of a Spring IoC container. For example, in a plain web application scenario,
a simple boilerplate web descriptor XML in the `web.xml` file of the application suffices (see
more instances of a Spring IoC container. For example, in a web application scenario, a
simple eight (or so) lines of boilerplate web descriptor XML in the `web.xml` file
of the application typically suffices (see
xref:core/beans/context-introduction.adoc#context-create[Convenient ApplicationContext Instantiation for Web Applications]).
In a Spring Boot scenario, the application context is implicitly bootstrapped for you
based on common setup conventions.
If you use the https://spring.io/tools[Spring Tools for Eclipse] (an Eclipse-powered
development environment), you can easily create this boilerplate configuration with a
few mouse clicks or keystrokes.
The following diagram shows a high-level view of how Spring works. Your application classes
are combined with configuration metadata so that, after the `ApplicationContext` is
created and initialized, you have a fully configured and executable system or application.
created and initialized, you have a fully configured and executable system or
application.
.The Spring IoC container
image::container-magic.png[]
@@ -35,25 +43,33 @@ image::container-magic.png[]
As the preceding diagram shows, the Spring IoC container consumes a form of
configuration metadata. This configuration metadata represents how you, as an
application developer, tell the Spring container to instantiate, configure,
and assemble the components in your application.
application developer, tell the Spring container to instantiate, configure, and assemble
the objects in your application.
Configuration metadata is traditionally supplied in a simple and intuitive XML format,
which is what most of this chapter uses to convey key concepts and features of the
Spring IoC container.
NOTE: XML-based metadata is not the only allowed form of configuration metadata.
The Spring IoC container itself is totally decoupled from the format in which this
configuration metadata is actually written. These days, many developers choose
xref:core/beans/java.adoc[Java-based configuration] for their Spring applications:
xref:core/beans/java.adoc[Java-based configuration] for their Spring applications.
For information about using other forms of metadata with the Spring container, see:
* xref:core/beans/annotation-config.adoc[Annotation-based configuration]: define beans using
annotation-based configuration metadata on your application's component classes.
annotation-based configuration metadata.
* xref:core/beans/java.adoc[Java-based configuration]: define beans external to your application
classes by using Java-based configuration classes. To use these features, see the
{spring-framework-api}/context/annotation/Configuration.html[`@Configuration`],
{spring-framework-api}/context/annotation/Bean.html[`@Bean`],
{spring-framework-api}/context/annotation/Import.html[`@Import`],
and {spring-framework-api}/context/annotation/DependsOn.html[`@DependsOn`] annotations.
classes by using Java rather than XML files. To use these features, see the
{api-spring-framework}/context/annotation/Configuration.html[`@Configuration`],
{api-spring-framework}/context/annotation/Bean.html[`@Bean`],
{api-spring-framework}/context/annotation/Import.html[`@Import`],
and {api-spring-framework}/context/annotation/DependsOn.html[`@DependsOn`] annotations.
Spring configuration consists of at least one and typically more than one bean definition
that the container must manage. Java configuration typically uses `@Bean`-annotated
methods within a `@Configuration` class, each corresponding to one bean definition.
Spring configuration consists of at least one and typically more than one bean
definition that the container must manage. XML-based configuration metadata configures these
beans as `<bean/>` elements inside a top-level `<beans/>` element. Java
configuration typically uses `@Bean`-annotated methods within a `@Configuration` class.
These bean definitions correspond to the actual objects that make up your application.
Typically, you define service layer objects, persistence layer objects such as
@@ -63,14 +79,7 @@ Typically, one does not configure fine-grained domain objects in the container,
it is usually the responsibility of repositories and business logic to create and load
domain objects.
[[beans-factory-xml]]
=== XML as an External Configuration DSL
XML-based configuration metadata configures these beans as `<bean/>` elements inside
a top-level `<beans/>` element. The following example shows the basic structure of
XML-based configuration metadata:
The following example shows the basic structure of XML-based configuration metadata:
[source,xml,indent=0,subs="verbatim,quotes"]
----
@@ -101,9 +110,14 @@ The value of the `id` attribute can be used to refer to collaborating objects. T
for referring to collaborating objects is not shown in this example. See
xref:core/beans/dependencies.adoc[Dependencies] for more information.
For instantiating a container, the location path or paths to the XML resource files
need to be supplied to a `ClassPathXmlApplicationContext` constructor that let the
container load configuration metadata from a variety of external resources, such
[[beans-factory-instantiation]]
== Instantiating a Container
The location path or paths
supplied to an `ApplicationContext` constructor are resource strings that let
the container load configuration metadata from a variety of external resources, such
as the local file system, the Java `CLASSPATH`, and so on.
[tabs]
@@ -195,9 +209,9 @@ xref:core/beans/dependencies.adoc[Dependencies].
It can be useful to have bean definitions span multiple XML files. Often, each individual
XML configuration file represents a logical layer or module in your architecture.
You can use the `ClassPathXmlApplicationContext` constructor to load bean definitions from
You can use the application context constructor to load bean definitions from all these
XML fragments. This constructor takes multiple `Resource` locations, as was shown in the
xref:core/beans/basics.adoc#beans-factory-xml[previous section]. Alternatively,
xref:core/beans/basics.adoc#beans-factory-instantiation[previous section]. Alternatively,
use one or more occurrences of the `<import/>` element to load bean definitions from
another file or files. The following example shows how to do so:
@@ -245,7 +259,7 @@ configuration features beyond plain bean definitions are available in a selectio
of XML namespaces provided by Spring -- for example, the `context` and `util` namespaces.
[[beans-factory-groovy]]
[[groovy-bean-definition-dsl]]
=== The Groovy Bean Definition DSL
As a further example for externalized configuration metadata, bean definitions can also
@@ -406,3 +420,4 @@ a dependency on a specific bean through metadata (such as an autowiring annotati
@@ -27,7 +27,7 @@ use these features.
== `@Component` and Further Stereotype Annotations
The `@Repository` annotation is a marker for any class that fulfills the role or
_stereotype_ of a repository (also known as Data Access Object or DAO). Among the uses
stereotype of a repository (also known as Data Access Object or DAO). Among the uses
of this marker is the automatic translation of exceptions, as described in
xref:data-access/orm/general.adoc#orm-exception-translation[Exception Translation].
@@ -39,7 +39,7 @@ layers, respectively). Therefore, you can annotate your component classes with
`@Component`, but, by annotating them with `@Repository`, `@Service`, or `@Controller`
instead, your classes are more properly suited for processing by tools or associating
with aspects. For example, these stereotype annotations make ideal targets for
pointcuts. `@Repository`, `@Service`, and `@Controller` may also
pointcuts. `@Repository`, `@Service`, and `@Controller` can also
carry additional semantics in future releases of the Spring Framework. Thus, if you are
choosing between using `@Component` or `@Service` for your service layer, `@Service` is
clearly the better choice. Similarly, as stated earlier, `@Repository` is already
@@ -191,7 +191,7 @@ Kotlin::
======
For further details, see the
{spring-framework-wiki}/Spring-Annotation-Programming-Model[Spring Annotation Programming Model]
https://github.com/spring-projects/spring-framework/wiki/Spring-Annotation-Programming-Model[Spring Annotation Programming Model]
wiki page.
@@ -315,7 +315,7 @@ entries in the classpath. When you build JARs with Ant, make sure that you do no
activate the files-only switch of the JAR task. Also, classpath directories may not be
exposed based on security policies in some environments -- for example, standalone apps on
JDK 1.7.0_45 and higher (which requires 'Trusted-Library' setup in your manifests -- see
{stackoverflow-questions}/19394570/java-jre-7u45-breaks-classloader-getresources).
https://stackoverflow.com/questions/19394570/java-jre-7u45-breaks-classloader-getresources).
On JDK 9's module path (Jigsaw), Spring's classpath scanning generally works as expected.
However, make sure that your component classes are exported in your `module-info`
@@ -664,36 +664,15 @@ analogous to how the container selects between multiple `@Autowired` constructor
== Naming Autodetected Components
When a component is autodetected as part of the scanning process, its bean name is
generated by the `BeanNameGenerator` strategy known to that scanner.
generated by the `BeanNameGenerator` strategy known to that scanner. By default, any
Spring stereotype annotation (`@Component`, `@Repository`, `@Service`, and
`@Controller`) that contains a name `value` thereby provides that name to the
corresponding bean definition.
By default, the `AnnotationBeanNameGenerator` is used. For Spring
xref:core/beans/classpath-scanning.adoc#beans-stereotype-annotations[stereotype annotations],
if you supply a name via the annotation's `value` attribute that name will be used as
the name in the corresponding bean definition. This convention also applies when the
following JSR-250 and JSR-330 annotations are used instead of Spring stereotype
annotations: `@jakarta.annotation.ManagedBean`, `@javax.annotation.ManagedBean`,
`@jakarta.inject.Named`, and `@javax.inject.Named`.
As of Spring Framework 6.1, the name of the annotation attribute that is used to specify
the bean name is no longer required to be `value`. Custom stereotype annotations can
declare an attribute with a different name (such as `name`) and annotate that attribute
with `@AliasFor(annotation = Component.class, attribute = "value")`. See the source code
declaration of `ControllerAdvice#name()` for a concrete example.
[WARNING]
====
As of Spring Framework 6.1, support for convention-based stereotype names is deprecated
and will be removed in a future version of the framework. Consequently, custom stereotype
annotations must use `@AliasFor` to declare an explicit alias for the `value` attribute
in `@Component`. See the source code declaration of `Repository#value()` and
`ControllerAdvice#name()` for concrete examples.
====
If an explicit bean name cannot be derived from such an annotation or for any other
detected component (such as those discovered by custom filters), the default bean name
generator returns the uncapitalized non-qualified class name. For example, if the
following component classes were detected, the names would be `myMovieLister` and
`movieFinderImpl`.
If such an annotation contains no name `value` or for any other detected component
(such as those discovered by custom filters), the default bean name generator returns
the uncapitalized non-qualified class name. For example, if the following component
classes were detected, the names would be `myMovieLister` and `movieFinderImpl`:
[tabs]
======
@@ -743,7 +722,7 @@ Kotlin::
If you do not want to rely on the default bean-naming strategy, you can provide a custom
bean-naming strategy. First, implement the
{spring-framework-api}/beans/factory/support/BeanNameGenerator.html[`BeanNameGenerator`]
{api-spring-framework}/beans/factory/support/BeanNameGenerator.html[`BeanNameGenerator`]
interface, and be sure to include a default no-arg constructor. Then, provide the fully
qualified class name when configuring the scanner, as the following example annotation
and bean definition show.
@@ -840,7 +819,7 @@ possibly also declaring a custom scoped-proxy mode.
NOTE: To provide a custom strategy for scope resolution rather than relying on the
annotation-based approach, you can implement the
{spring-framework-api}/context/annotation/ScopeMetadataResolver.html[`ScopeMetadataResolver`]
{api-spring-framework}/context/annotation/ScopeMetadataResolver.html[`ScopeMetadataResolver`]
interface. Be sure to include a default no-arg constructor. Then you can provide the
fully qualified class name when configuring the scanner, as the following example of both
an annotation and a bean definition shows:
@@ -1010,4 +989,68 @@ metadata is provided per-instance rather than per-class.
[[beans-scanning-index]]
== Generating an Index of Candidate Components
While classpath scanning is very fast, it is possible to improve the startup performance
of large applications by creating a static list of candidates at compilation time. In this
mode, all modules that are targets of component scanning must use this mechanism.
NOTE: Your existing `@ComponentScan` or `<context:component-scan/>` directives must remain
unchanged to request the context to scan candidates in certain packages. When the
`ApplicationContext` detects such an index, it automatically uses it rather than scanning
the classpath.
To generate the index, add an additional dependency to each module that contains
components that are targets for component scan directives. The following example shows
how to do so with Maven:
[source,xml,indent=0,subs="verbatim,quotes,attributes"]
----
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-indexer</artifactId>
<version>{spring-version}</version>
<optional>true</optional>
</dependency>
</dependencies>
----
With Gradle 4.5 and earlier, the dependency should be declared in the `compileOnly`
configuration, as shown in the following example:
[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
----
dependencies {
compileOnly "org.springframework:spring-context-indexer:{spring-version}"
}
----
With Gradle 4.6 and later, the dependency should be declared in the `annotationProcessor`
configuration, as shown in the following example:
[source,groovy,indent=0,subs="verbatim,quotes,attributes"]
----
dependencies {
annotationProcessor "org.springframework:spring-context-indexer:{spring-version}"
}
----
The `spring-context-indexer` artifact generates a `META-INF/spring.components` file that
is included in the jar file.
NOTE: When working with this mode in your IDE, the `spring-context-indexer` must be
registered as an annotation processor to make sure the index is up-to-date when
candidate components are updated.
TIP: The index is enabled automatically when a `META-INF/spring.components` file is found
on the classpath. If an index is partially available for some libraries (or use cases)
but could not be built for the whole application, you can fall back to a regular classpath
arrangement (as though no index were present at all) by setting `spring.index.ignore` to
`true`, either as a JVM system property or via the
xref:appendix.adoc#appendix-spring-properties[`SpringProperties`] mechanism.
@@ -4,7 +4,7 @@
As discussed in the xref:web/webmvc-view/mvc-xslt.adoc#mvc-view-xslt-beandefs[chapter introduction], the `org.springframework.beans.factory`
package provides basic functionality for managing and manipulating beans, including in a
programmatic way. The `org.springframework.context` package adds the
{spring-framework-api}/context/ApplicationContext.html[`ApplicationContext`]
{api-spring-framework}/context/ApplicationContext.html[`ApplicationContext`]
interface, which extends the `BeanFactory` interface, in addition to extending other
interfaces to provide additional functionality in a more application
framework-oriented style. Many people use the `ApplicationContext` in a completely
@@ -269,7 +269,7 @@ file format but is more flexible than the standard JDK based
`ResourceBundleMessageSource` implementation. In particular, it allows for reading
files from any Spring resource location (not only from the classpath) and supports hot
reloading of bundle property files (while efficiently caching them in between).
See the {spring-framework-api}/context/support/ReloadableResourceBundleMessageSource.html[`ReloadableResourceBundleMessageSource`]
See the {api-spring-framework}/context/support/ReloadableResourceBundleMessageSource.html[`ReloadableResourceBundleMessageSource`]
javadoc for details.
@@ -478,21 +478,20 @@ Kotlin::
----
======
Notice that `ApplicationListener` is generically parameterized with the type of your custom event (`BlockedListEvent` in the preceding example).
This means that the `onApplicationEvent()` method can remain type-safe, avoiding any need for downcasting.
You can register as many event listeners as you wish, but note that, by default, event listeners receive events synchronously.
This means that the `publishEvent()` method blocks until all listeners have finished processing the event.
One advantage of this synchronous and single-threaded approach is that, when a listener receives an event,
it operates inside the transaction context of the publisher if a transaction context is available.
If another strategy for event publication becomes necessary, e.g. asynchronous event processing by default,
see the javadoc for Spring's {spring-framework-api}/context/event/ApplicationEventMulticaster.html[`ApplicationEventMulticaster`] interface
and {spring-framework-api}/context/event/SimpleApplicationEventMulticaster.html[`SimpleApplicationEventMulticaster`] implementation
for configuration options which can be applied to a custom "applicationEventMulticaster" bean definition.
In these cases, ThreadLocals and logging context are not propagated for the event processing.
See xref:integration/observability.adoc#observability.application-events[the `@EventListener` Observability section]
for more information on Observability concerns.
Notice that `ApplicationListener` is generically parameterized with the type of your
custom event (`BlockedListEvent` in the preceding example). This means that the
`onApplicationEvent()` method can remain type-safe, avoiding any need for downcasting.
You can register as many event listeners as you wish, but note that, by default, event
listeners receive events synchronously. This means that the `publishEvent()` method
blocks until all listeners have finished processing the event. One advantage of this
synchronous and single-threaded approach is that, when a listener receives an event,
it operates inside the transaction context of the publisher if a transaction context
is available. If another strategy for event publication becomes necessary, e.g.
asynchronous event processing by default, see the javadoc for Spring's
{api-spring-framework}/context/event/ApplicationEventMulticaster.html[`ApplicationEventMulticaster`] interface
and {api-spring-framework}/context/event/SimpleApplicationEventMulticaster.html[`SimpleApplicationEventMulticaster`]
implementation for configuration options which can be applied to a custom
"applicationEventMulticaster" bean definition.
The following example shows the bean definitions used to register and configure each of
the classes above:
@@ -529,7 +528,7 @@ notify appropriate parties.
NOTE: Spring's eventing mechanism is designed for simple communication between Spring beans
within the same application context. However, for more sophisticated enterprise
integration needs, the separately maintained
{spring-site-projects}/spring-integration/[Spring Integration] project provides
https://projects.spring.io/spring-integration/[Spring Integration] project provides
complete support for building lightweight,
https://www.enterpriseintegrationpatterns.com[pattern-oriented], event-driven
architectures that build upon the well-known Spring programming model.
@@ -742,15 +741,12 @@ Be aware of the following limitations when using asynchronous events:
* If an asynchronous event listener throws an `Exception`, it is not propagated to the
caller. See
{spring-framework-api}/aop/interceptor/AsyncUncaughtExceptionHandler.html[`AsyncUncaughtExceptionHandler`]
{api-spring-framework}/aop/interceptor/AsyncUncaughtExceptionHandler.html[`AsyncUncaughtExceptionHandler`]
for more details.
* Asynchronous event listener methods cannot publish a subsequent event by returning a
value. If you need to publish another event as the result of the processing, inject an
{spring-framework-api}/context/ApplicationEventPublisher.html[`ApplicationEventPublisher`]
{api-spring-framework}/context/ApplicationEventPublisher.html[`ApplicationEventPublisher`]
to publish the event manually.
* ThreadLocals and logging context are not propagated by default for the event processing.
See xref:integration/observability.adoc#observability.application-events[the `@EventListener` Observability section]
for more information on Observability concerns.
[[context-functionality-events-order]]
@@ -1040,7 +1036,7 @@ and JMX support facilities. Application components can also interact with the ap
server's JCA `WorkManager` through Spring's `TaskExecutor` abstraction.
See the javadoc of the
{spring-framework-api}/jca/context/SpringContextResourceAdapter.html[`SpringContextResourceAdapter`]
{api-spring-framework}/jca/context/SpringContextResourceAdapter.html[`SpringContextResourceAdapter`]
class for the configuration details involved in RAR deployment.
For a simple deployment of a Spring ApplicationContext as a Jakarta EE RAR file:
@@ -1050,7 +1046,7 @@ all application classes into a RAR file (which is a standard JAR file with a dif
file extension).
. Add all required library JARs into the root of the RAR archive.
. Add a
`META-INF/ra.xml` deployment descriptor (as shown in the {spring-framework-api}/jca/context/SpringContextResourceAdapter.html[javadoc for `SpringContextResourceAdapter`])
`META-INF/ra.xml` deployment descriptor (as shown in the {api-spring-framework}/jca/context/SpringContextResourceAdapter.html[javadoc for `SpringContextResourceAdapter`])
and the corresponding Spring XML bean definition file(s) (typically
`META-INF/applicationContext.xml`).
. Drop the resulting RAR file into your
@@ -44,7 +44,7 @@ weaver instance. This is particularly useful in combination with
xref:data-access/orm/jpa.adoc[Spring's JPA support] where load-time weaving may be
necessary for JPA class transformation.
Consult the
{spring-framework-api}/orm/jpa/LocalContainerEntityManagerFactoryBean.html[`LocalContainerEntityManagerFactoryBean`]
{api-spring-framework}/orm/jpa/LocalContainerEntityManagerFactoryBean.html[`LocalContainerEntityManagerFactoryBean`]
javadoc for more detail. For more on AspectJ load-time weaving, see xref:core/aop/using-aspectj.adoc#aop-aj-ltw[Load-time Weaving with AspectJ in the Spring Framework].
@@ -75,31 +75,6 @@ lead to concurrent access exceptions, inconsistent state in the bean container,
[[beans-definition-overriding]]
== Overriding Beans
Bean overriding is happening when a bean is registered using an identifier that is
already allocated. While bean overriding is possible, it makes the configuration harder
to read and this feature will be deprecated in a future release.
To disable bean overriding altogether, you can set the `allowBeanDefinitionOverriding`
flag to `false` on the `ApplicationContext` before it is refreshed. In such setup, an
exception is thrown if bean overriding is used.
By default, the container logs every bean overriding at `INFO` level so that you can
adapt your configuration accordingly. While not recommended, you can silence those logs
by setting the `allowBeanDefinitionOverriding` flag to `true`.
.Java-configuration
****
If you use Java Configuration, a corresponding `@Bean` method always silently overrides
a scanned bean class with the same component name as long as the return type of the
`@Bean` method matches that bean class. This simply means that the container will call
the `@Bean` factory method in favor of any pre-declared constructor on the bean class.
****
[[beans-beanname]]
== Naming Beans
@@ -259,10 +234,6 @@ For details about the mechanism for supplying arguments to the constructor (if r
and setting object instance properties after the object is constructed, see
xref:core/beans/dependencies/factory-collaborators.adoc[Injecting Dependencies].
NOTE: In the case of constructor arguments, the container can select a corresponding
constructor among several overloaded constructors. That said, to avoid ambiguities,
it is recommended to keep your constructor signatures as straightforward as possible.
[[beans-factory-class-static-factory-method]]
=== Instantiation with a Static Factory Method
@@ -323,24 +294,6 @@ For details about the mechanism for supplying (optional) arguments to the factor
and setting object instance properties after the object is returned from the factory,
see xref:core/beans/dependencies/factory-properties-detailed.adoc[Dependencies and Configuration in Detail].
NOTE: In the case of factory method arguments, the container can select a corresponding
method among several overloaded methods of the same name. That said, to avoid ambiguities,
it is recommended to keep your factory method signatures as straightforward as possible.
[TIP]
====
A typical problematic case with factory method overloading is Mockito with its many
overloads of the `mock` method. Choose the most specific variant of `mock` possible:
[source,xml,indent=0,subs="verbatim,quotes"]
----
<bean id="clientService" class="org.mockito.Mockito" factory-method="mock">
<constructor-arg type="java.lang.Class" value="examples.ClientService"/>
<constructor-arg type="java.lang.String" value="clientService"/>
</bean>
----
====
[[beans-factory-class-instance-factory-method]]
=== Instantiation by Using an Instance Factory Method
@@ -2,14 +2,13 @@
= Using `depends-on`
If a bean is a dependency of another bean, that usually means that one bean is set as a
property of another. Typically you accomplish this with the
xref:core/beans/dependencies/factory-properties-detailed.adoc#beans-ref-element[`<ref/>` element>]
in XML-based configuration metadata. However, sometimes dependencies between beans are
less direct. An example is when a static initializer in a class needs to be triggered,
such as for database driver registration. The `depends-on` attribute can explicitly force
one or more beans to be initialized before the bean using this element is initialized.
The following example uses the `depends-on` attribute to express a dependency on a single
bean:
property of another. Typically you accomplish this with the <<beans-ref-element, `<ref/>`
element>> in XML-based configuration metadata. However, sometimes dependencies between
beans are less direct. An example is when a static initializer in a class needs to be
triggered, such as for database driver registration. The `depends-on` attribute can
explicitly force one or more beans to be initialized before the bean using this element
is initialized. The following example uses the `depends-on` attribute to express a
dependency on a single bean:
[source,xml,indent=0,subs="verbatim,quotes"]
----
@@ -99,7 +99,7 @@ container, lets you handle this use case cleanly.
****
You can read more about the motivation for Method Injection in
{spring-site-blog}/2004/08/06/method-injection/[this blog entry].
https://spring.io/blog/2004/08/06/method-injection/[this blog entry].
****
@@ -201,7 +201,7 @@ the original class. Consider the following example:
<!-- inject dependencies here as required -->
</bean>
<!-- commandManager uses myCommand prototype bean -->
<!-- commandProcessor uses statefulCommandHelper -->
<bean id="commandManager" class="fiona.apple.CommandManager">
<lookup-method name="createCommand" bean="myCommand"/>
</bean>
@@ -51,7 +51,7 @@ XML configuration:
The preceding XML is more succinct. However, typos are discovered at runtime rather than
design time, unless you use an IDE (such as https://www.jetbrains.com/idea/[IntelliJ
IDEA] or the {spring-site-tools}[Spring Tools for Eclipse])
IDEA] or the https://spring.io/tools[Spring Tools for Eclipse])
that supports automatic property completion when you create bean definitions. Such IDE
assistance is highly recommended.
@@ -1,7 +1,7 @@
[[beans-environment]]
= Environment Abstraction
The {spring-framework-api}/core/env/Environment.html[`Environment`] interface
The {api-spring-framework}/core/env/Environment.html[`Environment`] interface
is an abstraction integrated in the container that models two key
aspects of the application environment: xref:core/beans/environment.adoc#beans-definition-profiles[profiles]
and xref:core/beans/environment.adoc#beans-property-source-abstraction[properties].
@@ -118,7 +118,7 @@ situation B. We start by updating our configuration to reflect this need.
[[beans-definition-profiles-java]]
=== Using `@Profile`
The {spring-framework-api}/context/annotation/Profile.html[`@Profile`]
The {api-spring-framework}/context/annotation/Profile.html[`@Profile`]
annotation lets you indicate that a component is eligible for registration
when one or more specified profiles are active. Using our preceding example, we
can rewrite the `dataSource` configuration as follows:
@@ -516,8 +516,8 @@ as the following example shows:
[[beans-definition-profiles-default]]
=== Default Profile
The default profile represents the profile that is enabled if no profile is active. Consider
the following example:
The default profile represents the profile that is enabled by default. Consider the
following example:
[tabs]
======
@@ -558,9 +558,9 @@ Kotlin::
----
======
If xref:#beans-definition-profiles-enable[no profile is active], the `dataSource` is
created. You can see this as a way to provide a default definition for one or more
beans. If any profile is enabled, the default profile does not apply.
If no profile is active, the `dataSource` is created. You can see this
as a way to provide a default definition for one or more beans. If any
profile is enabled, the default profile does not apply.
The name of the default profile is `default`. You can change the name of
the default profile by using `setDefaultProfiles()` on the `Environment` or,
@@ -599,17 +599,17 @@ Kotlin::
In the preceding snippet, we see a high-level way of asking Spring whether the `my-property` property is
defined for the current environment. To answer this question, the `Environment` object performs
a search over a set of {spring-framework-api}/core/env/PropertySource.html[`PropertySource`]
a search over a set of {api-spring-framework}/core/env/PropertySource.html[`PropertySource`]
objects. A `PropertySource` is a simple abstraction over any source of key-value pairs, and
Spring's {spring-framework-api}/core/env/StandardEnvironment.html[`StandardEnvironment`]
Spring's {api-spring-framework}/core/env/StandardEnvironment.html[`StandardEnvironment`]
is configured with two PropertySource objects -- one representing the set of JVM system properties
(`System.getProperties()`) and one representing the set of system environment variables
(`System.getenv()`).
NOTE: These default property sources are present for `StandardEnvironment`, for use in standalone
applications. {spring-framework-api}/web/context/support/StandardServletEnvironment.html[`StandardServletEnvironment`]
applications. {api-spring-framework}/web/context/support/StandardServletEnvironment.html[`StandardServletEnvironment`]
is populated with additional default property sources including servlet config, servlet
context parameters, and a {spring-framework-api}/jndi/JndiPropertySource.html[`JndiPropertySource`]
context parameters, and a {api-spring-framework}/jndi/JndiPropertySource.html[`JndiPropertySource`]
if JNDI is available.
Concretely, when you use the `StandardEnvironment`, the call to `env.containsProperty("my-property")`
@@ -663,7 +663,7 @@ Kotlin::
In the preceding code, `MyPropertySource` has been added with highest precedence in the
search. If it contains a `my-property` property, the property is detected and returned, in favor of
any `my-property` property in any other `PropertySource`. The
{spring-framework-api}/core/env/MutablePropertySources.html[`MutablePropertySources`]
{api-spring-framework}/core/env/MutablePropertySources.html[`MutablePropertySources`]
API exposes a number of methods that allow for precise manipulation of the set of
property sources.
@@ -672,7 +672,7 @@ property sources.
[[beans-using-propertysource]]
== Using `@PropertySource`
The {spring-framework-api}/context/annotation/PropertySource.html[`@PropertySource`]
The {api-spring-framework}/context/annotation/PropertySource.html[`@PropertySource`]
annotation provides a convenient and declarative mechanism for adding a `PropertySource`
to Spring's `Environment`.
@@ -772,9 +772,11 @@ resolved to the corresponding value. If not, then `default/path` is used
as a default. If no default is specified and a property cannot be resolved, an
`IllegalArgumentException` is thrown.
NOTE: `@PropertySource` can be used as a repeatable annotation. `@PropertySource`
may also be used as a meta-annotation to create custom composed annotations with
attribute overrides.
NOTE: The `@PropertySource` annotation is repeatable, according to Java 8 conventions.
However, all such `@PropertySource` annotations need to be declared at the same
level, either directly on the configuration class or as meta-annotations within the
same custom annotation. Mixing direct annotations and meta-annotations is not
recommended, since direct annotations effectively override meta-annotations.
@@ -22,8 +22,8 @@ in which these `BeanPostProcessor` instances run by setting the `order` property
You can set this property only if the `BeanPostProcessor` implements the `Ordered`
interface. If you write your own `BeanPostProcessor`, you should consider implementing
the `Ordered` interface, too. For further details, see the javadoc of the
{spring-framework-api}/beans/factory/config/BeanPostProcessor.html[`BeanPostProcessor`]
and {spring-framework-api}/core/Ordered.html[`Ordered`] interfaces. See also the note on
{api-spring-framework}/beans/factory/config/BeanPostProcessor.html[`BeanPostProcessor`]
and {api-spring-framework}/core/Ordered.html[`Ordered`] interfaces. See also the note on
xref:core/beans/factory-extension.adoc#beans-factory-programmatically-registering-beanpostprocessors[programmatic registration of `BeanPostProcessor` instances].
[NOTE]
@@ -272,8 +272,8 @@ which these `BeanFactoryPostProcessor` instances run by setting the `order` prop
However, you can only set this property if the `BeanFactoryPostProcessor` implements the
`Ordered` interface. If you write your own `BeanFactoryPostProcessor`, you should
consider implementing the `Ordered` interface, too. See the javadoc of the
{spring-framework-api}/beans/factory/config/BeanFactoryPostProcessor.html[`BeanFactoryPostProcessor`]
and {spring-framework-api}/core/Ordered.html[`Ordered`] interfaces for more details.
{api-spring-framework}/beans/factory/config/BeanFactoryPostProcessor.html[`BeanFactoryPostProcessor`]
and {api-spring-framework}/core/Ordered.html[`Ordered`] interfaces for more details.
[NOTE]
====
@@ -592,40 +592,6 @@ Kotlin::
[[beans-factory-thread-safety]]
=== Thread Safety and Visibility
The Spring core container publishes created singleton instances in a thread-safe manner,
guarding access through a singleton lock and guaranteeing visibility in other threads.
As a consequence, application-provided bean classes do not have to be concerned about the
visibility of their initialization state. Regular configuration fields do not have to be
marked as `volatile` as long as they are only mutated during the initialization phase,
providing visibility guarantees similar to `final` even for setter-based configuration
state that is mutable during that initial phase. If such fields get changed after the
bean creation phase and its subsequent initial publication, they need to be declared as
`volatile` or guarded by a common lock whenever accessed.
Note that concurrent access to such configuration state in singleton bean instances,
e.g. for controller instances or repository instances, is perfectly thread-safe after
such safe initial publication from the container side. This includes common singleton
`FactoryBean` instances which are processed within the general singleton lock as well.
For destruction callbacks, the configuration state remains thread-safe but any runtime
state accumulated between initialization and destruction should be kept in thread-safe
structures (or in `volatile` fields for simple cases) as per common Java guidelines.
Deeper `Lifecycle` integration as shown above involves runtime-mutable state such as
a `runnable` field which will have to be declared as `volatile`. While the common
lifecycle callbacks follow a certain order, e.g. a start callback is guaranteed to
only happen after full initialization and a stop callback only after an initial start,
there is a special case with the common stop before destroy arrangement: It is strongly
recommended that the internal state in any such bean also allows for an immediate
destroy callback without a preceding stop since this may happen during an extraordinary
shutdown after a cancelled bootstrap or in case of a stop timeout caused by another bean.
[[beans-factory-aware]]
== `ApplicationContextAware` and `BeanNameAware`
@@ -51,7 +51,7 @@ The following table describes the supported scopes:
NOTE: A thread scope is available but is not registered by default. For more information,
see the documentation for
{spring-framework-api}/context/support/SimpleThreadScope.html[`SimpleThreadScope`].
{api-spring-framework}/context/support/SimpleThreadScope.html[`SimpleThreadScope`].
For instructions on how to register this or any other custom scope, see
xref:core/beans/factory-scopes.adoc#beans-factory-scopes-custom-using[Using a Custom Scope].
@@ -541,19 +541,6 @@ see xref:core/aop/proxying.adoc[Proxying Mechanisms].
[[beans-factory-scopes-injection]]
=== Injecting Request/Session References Directly
As an alternative to factory scopes, a Spring `WebApplicationContext` also supports
the injection of `HttpServletRequest`, `HttpServletResponse`, `HttpSession`,
`WebRequest` and (if JSF is present) `FacesContext` and `ExternalContext` into
Spring-managed beans, simply through type-based autowiring next to regular injection
points for other beans. Spring generally injects proxies for such request and session
objects which has the advantage of working in singleton beans and serializable beans
as well, similar to scoped proxies for factory-scoped beans.
[[beans-factory-scopes-custom]]
== Custom Scopes
@@ -569,7 +556,7 @@ To integrate your custom scopes into the Spring container, you need to implement
`org.springframework.beans.factory.config.Scope` interface, which is described in this
section. For an idea of how to implement your own scopes, see the `Scope`
implementations that are supplied with the Spring Framework itself and the
{spring-framework-api}/beans/factory/config/Scope.html[`Scope`] javadoc,
{api-spring-framework}/beans/factory/config/Scope.html[`Scope`] javadoc,
which explains the methods you need to implement in more detail.
The `Scope` interface has four methods to get objects from the scope, remove them from
@@ -639,7 +626,7 @@ Kotlin::
----
======
See the {spring-framework-api}/beans/factory/config/Scope.html#registerDestructionCallback[javadoc]
See the {api-spring-framework}/beans/factory/config/Scope.html#registerDestructionCallback[javadoc]
or a Spring scope implementation for more information on destruction callbacks.
The following method obtains the conversation identifier for the underlying scope:
@@ -1,22 +1,22 @@
[[beans-introduction]]
= Introduction to the Spring IoC Container and Beans
This chapter covers the Spring Framework implementation of the Inversion of Control (IoC)
principle. Dependency injection (DI) is a specialized form of IoC, whereby objects define
their dependencies (that is, the other objects they work with) only through constructor
arguments, arguments to a factory method, or properties that are set on the object
instance after it is constructed or returned from a factory method. The IoC container
This chapter covers the Spring Framework implementation of the Inversion of Control
(IoC) principle. IoC is also known as dependency injection (DI). It is a process whereby
objects define their dependencies (that is, the other objects they work with) only through
constructor arguments, arguments to a factory method, or properties that are set on the
object instance after it is constructed or returned from a factory method. The container
then injects those dependencies when it creates the bean. This process is fundamentally
the inverse (hence the name, Inversion of Control) of the bean itself controlling the
instantiation or location of its dependencies by using direct construction of classes or
a mechanism such as the Service Locator pattern.
the inverse (hence the name, Inversion of Control) of the bean itself
controlling the instantiation or location of its dependencies by using direct
construction of classes or a mechanism such as the Service Locator pattern.
The `org.springframework.beans` and `org.springframework.context` packages are the basis
for Spring Framework's IoC container. The
{spring-framework-api}/beans/factory/BeanFactory.html[`BeanFactory`]
{api-spring-framework}/beans/factory/BeanFactory.html[`BeanFactory`]
interface provides an advanced configuration mechanism capable of managing any type of
object.
{spring-framework-api}/context/ApplicationContext.html[`ApplicationContext`]
{api-spring-framework}/context/ApplicationContext.html[`ApplicationContext`]
is a sub-interface of `BeanFactory`. It adds:
* Easier integration with Spring's AOP features
@@ -3,5 +3,17 @@
:page-section-summary-toc: 1
This section covers how to use annotations in your Java code to configure the Spring
container.
container. It includes the following topics:
* xref:core/beans/java/basic-concepts.adoc[Basic Concepts: `@Bean` and `@Configuration`]
* xref:core/beans/java/instantiating-container.adoc[Instantiating the Spring Container by Using `AnnotationConfigApplicationContext`]
* xref:core/beans/java/bean-annotation.adoc[Using the `@Bean` Annotation]
* xref:core/beans/java/configuration-annotation.adoc[Using the `@Configuration` annotation]
* xref:core/beans/java/composing-configuration-classes.adoc[Composing Java-based Configurations]
* xref:core/beans/environment.adoc#beans-definition-profiles[Bean Definition Profiles]
* xref:core/beans/environment.adoc#beans-property-source-abstraction[`PropertySource` Abstraction]
* xref:core/beans/environment.adoc#beans-using-propertysource[Using `@PropertySource`]
* xref:core/beans/environment.adoc#beans-placeholder-resolution-in-statements[Placeholder Resolution in Statements]
@@ -55,34 +55,33 @@ The preceding `AppConfig` class is equivalent to the following Spring `<beans/>`
</beans>
----
.@Configuration classes with or without local calls between @Bean methods?
.Full @Configuration vs "`lite`" @Bean mode?
****
In common scenarios, `@Bean` methods are to be declared within `@Configuration` classes,
ensuring that full configuration class processing applies and that cross-method
references therefore get redirected to the container's lifecycle management.
This prevents the same `@Bean` method from accidentally being invoked through a regular
Java method call, which helps to reduce subtle bugs that can be hard to track down.
When `@Bean` methods are declared within classes that are not annotated with
`@Configuration` - or when `@Configuration(proxyBeanMethods=false)` is declared -,
they are referred to as being processed in a "lite" mode. In such scenarios,
`@Bean` methods are effectively a general-purpose factory method mechanism without
special runtime processing (that is, without generating a CGLIB subclass for it).
A custom Java call to such a method will not get intercepted by the container and
therefore behaves just like a regular method call, creating a new instance every time
rather than reusing an existing singleton (or scoped) instance for the given bean.
`@Configuration`, they are referred to as being processed in a "`lite`" mode. Bean methods
declared in a `@Component` or even in a plain old class are considered to be "`lite`",
with a different primary purpose of the containing class and a `@Bean` method
being a sort of bonus there. For example, service components may expose management views
to the container through an additional `@Bean` method on each applicable component class.
In such scenarios, `@Bean` methods are a general-purpose factory method mechanism.
As a consequence, `@Bean` methods on classes without runtime proxying are not meant to
declare inter-bean dependencies at all. Instead, they are expected to operate on their
containing component's fields and, optionally, on arguments that a factory method may
declare in order to receive autowired collaborators. Such a `@Bean` method therefore
never needs to invoke other `@Bean` methods; every such call can be expressed through
a factory method argument instead. The positive side-effect here is that no CGLIB
subclassing has to be applied at runtime, reducing the overhead and the footprint.
Unlike full `@Configuration`, lite `@Bean` methods cannot declare inter-bean dependencies.
Instead, they operate on their containing component's internal state and, optionally, on
arguments that they may declare. Such a `@Bean` method should therefore not invoke other
`@Bean` methods. Each such method is literally only a factory method for a particular
bean reference, without any special runtime semantics. The positive side-effect here is
that no CGLIB subclassing has to be applied at runtime, so there are no limitations in
terms of class design (that is, the containing class may be `final` and so forth).
In common scenarios, `@Bean` methods are to be declared within `@Configuration` classes,
ensuring that "`full`" mode is always used and that cross-method references therefore
get redirected to the container's lifecycle management. This prevents the same
`@Bean` method from accidentally being invoked through a regular Java call, which helps
to reduce subtle bugs that can be hard to track down when operating in "`lite`" mode.
****
The `@Bean` and `@Configuration` annotations are discussed in depth in the following sections.
First, however, we cover the various ways of creating a Spring container by using
First, however, we cover the various ways of creating a spring container by using
Java-based configuration.
@@ -552,7 +552,7 @@ Sometimes, it is helpful to provide a more detailed textual description of a bea
be particularly useful when beans are exposed (perhaps through JMX) for monitoring purposes.
To add a description to a `@Bean`, you can use the
{spring-framework-api}/context/annotation/Description.html[`@Description`]
{api-spring-framework}/context/annotation/Description.html[`@Description`]
annotation, as the following example shows:
[tabs]
@@ -225,7 +225,7 @@ Also, be particularly careful with `BeanPostProcessor` and `BeanFactoryPostProce
through `@Bean`. Those should usually be declared as `static @Bean` methods, not triggering the
instantiation of their containing configuration class. Otherwise, `@Autowired` and `@Value` may not
work on the configuration class itself, since it is possible to create it as a bean instance earlier than
{spring-framework-api}/beans/factory/annotation/AutowiredAnnotationBeanPostProcessor.html[`AutowiredAnnotationBeanPostProcessor`].
{api-spring-framework}/beans/factory/annotation/AutowiredAnnotationBeanPostProcessor.html[`AutowiredAnnotationBeanPostProcessor`].
====
The following example shows how one bean can be autowired to another bean:
@@ -338,7 +338,7 @@ modularity, but determining exactly where the autowired bean definitions are dec
still somewhat ambiguous. For example, as a developer looking at `ServiceConfig`, how do
you know exactly where the `@Autowired AccountRepository` bean is declared? It is not
explicit in the code, and this may be just fine. Remember that the
{spring-site-tools}[Spring Tools for Eclipse] provides tooling that
https://spring.io/tools[Spring Tools for Eclipse] provides tooling that
can render graphs showing how everything is wired, which may be all you need. Also,
your Java IDE can easily find all declarations and uses of the `AccountRepository` type
and quickly show you the location of `@Bean` methods that return that type.
@@ -519,7 +519,7 @@ profile has been enabled in the Spring `Environment` (see xref:core/beans/enviro
for details).
The `@Profile` annotation is actually implemented by using a much more flexible annotation
called {spring-framework-api}/context/annotation/Conditional.html[`@Conditional`].
called {api-spring-framework}/context/annotation/Conditional.html[`@Conditional`].
The `@Conditional` annotation indicates specific
`org.springframework.context.annotation.Condition` implementations that should be
consulted before a `@Bean` is registered.
@@ -570,7 +570,7 @@ Kotlin::
----
======
See the {spring-framework-api}/context/annotation/Conditional.html[`@Conditional`]
See the {api-spring-framework}/context/annotation/Conditional.html[`@Conditional`]
javadoc for more detail.
@@ -278,7 +278,7 @@ init-param):
NOTE: For programmatic use cases, a `GenericWebApplicationContext` can be used as an
alternative to `AnnotationConfigWebApplicationContext`. See the
{spring-framework-api}/web/context/support/GenericWebApplicationContext.html[`GenericWebApplicationContext`]
{api-spring-framework}/web/context/support/GenericWebApplicationContext.html[`GenericWebApplicationContext`]
javadoc for details.
@@ -56,7 +56,7 @@ alternate between read and write.
== `PooledDataBuffer`
As explained in the Javadoc for
{java-api}/java.base/java/nio/ByteBuffer.html[ByteBuffer],
https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html[ByteBuffer],
byte buffers can be direct or non-direct. Direct buffers may reside outside the Java heap
which eliminates the need for copying for native I/O operations. That makes direct buffers
particularly useful for receiving and sending data over a socket, but they're also more
@@ -1,18 +1,17 @@
[[expressions]]
= Spring Expression Language (SpEL)
The Spring Expression Language ("SpEL" for short) is a powerful expression language that
The Spring Expression Language ("`SpEL`" for short) is a powerful expression language that
supports querying and manipulating an object graph at runtime. The language syntax is
similar to the https://jakarta.ee/specifications/expression-language/[Jakarta Expression
Language] but offers additional features, most notably method invocation and basic string
templating functionality.
similar to Unified EL but offers additional features, most notably method invocation and
basic string templating functionality.
While there are several other Java expression languages available -- OGNL, MVEL, and JBoss
EL, to name a few -- the Spring Expression Language was created to provide the Spring
community with a single well supported expression language that can be used across all
the products in the Spring portfolio. Its language features are driven by the
requirements of the projects in the Spring portfolio, including tooling requirements
for code completion support within the {spring-site-tools}[Spring Tools for Eclipse].
for code completion support within the https://spring.io/tools[Spring Tools for Eclipse].
That said, SpEL is based on a technology-agnostic API that lets other expression language
implementations be integrated, should the need arise.
@@ -34,24 +33,24 @@ populate them are listed at the end of the chapter.
The expression language supports the following functionality:
* Literal expressions
* Boolean and relational operators
* Regular expressions
* Class expressions
* Accessing properties, arrays, lists, and maps
* Method invocation
* Assignment
* Calling constructors
* Bean references
* Array construction
* Inline lists
* Inline maps
* Array construction
* Relational operators
* Regular expressions
* Logical operators
* String operators
* Mathematical operators
* Assignment
* Type expressions
* Method invocation
* Constructor invocation
* Ternary operator
* Variables
* User-defined functions
* Bean references
* Ternary, Elvis, and safe-navigation operators
* Collection projection
* Collection selection
* Templated expressions
@@ -1,12 +1,12 @@
[[expressions-evaluation]]
= Evaluation
This section introduces programmatic use of SpEL's interfaces and its expression language.
The complete language reference can be found in the
This section introduces the simple use of SpEL interfaces and its expression language.
The complete language reference can be found in
xref:core/expressions/language-ref.adoc[Language Reference].
The following code demonstrates how to use the SpEL API to evaluate the literal string
expression, `Hello World`.
The following code introduces the SpEL API to evaluate the literal string expression,
`Hello World`.
[tabs]
======
@@ -18,7 +18,7 @@ Java::
Expression exp = parser.parseExpression("'Hello World'"); // <1>
String message = (String) exp.getValue();
----
<1> The value of the message variable is `"Hello World"`.
<1> The value of the message variable is `'Hello World'`.
Kotlin::
+
@@ -28,24 +28,24 @@ Kotlin::
val exp = parser.parseExpression("'Hello World'") // <1>
val message = exp.value as String
----
<1> The value of the message variable is `"Hello World"`.
<1> The value of the message variable is `'Hello World'`.
======
The SpEL classes and interfaces you are most likely to use are located in the
`org.springframework.expression` package and its sub-packages, such as `spel.support`.
The `ExpressionParser` interface is responsible for parsing an expression string. In the
preceding example, the expression string is a string literal denoted by the surrounding
single quotation marks. The `Expression` interface is responsible for evaluating the
defined expression string. The two types of exceptions that can be thrown when calling
`parser.parseExpression(...)` and `exp.getValue(...)` are `ParseException` and
`EvaluationException`, respectively.
The `ExpressionParser` interface is responsible for parsing an expression string. In
the preceding example, the expression string is a string literal denoted by the surrounding single
quotation marks. The `Expression` interface is responsible for evaluating the previously defined
expression string. Two exceptions that can be thrown, `ParseException` and
`EvaluationException`, when calling `parser.parseExpression` and `exp.getValue`,
respectively.
SpEL supports a wide range of features such as calling methods, accessing properties,
SpEL supports a wide range of features, such as calling methods, accessing properties,
and calling constructors.
In the following method invocation example, we call the `concat` method on the string
literal, `Hello World`.
In the following example of method invocation, we call the `concat` method on the string literal:
[tabs]
======
@@ -57,7 +57,7 @@ Java::
Expression exp = parser.parseExpression("'Hello World'.concat('!')"); // <1>
String message = (String) exp.getValue();
----
<1> The value of `message` is now `"Hello World!"`.
<1> The value of `message` is now 'Hello World!'.
Kotlin::
+
@@ -67,11 +67,10 @@ Kotlin::
val exp = parser.parseExpression("'Hello World'.concat('!')") // <1>
val message = exp.value as String
----
<1> The value of `message` is now `"Hello World!"`.
<1> The value of `message` is now 'Hello World!'.
======
The following example demonstrates how to access the `Bytes` JavaBean property of the
string literal, `Hello World`.
The following example of calling a JavaBean property calls the `String` property `Bytes`:
[tabs]
======
@@ -101,10 +100,10 @@ Kotlin::
======
SpEL also supports nested properties by using the standard dot notation (such as
`prop1.prop2.prop3`) as well as the corresponding setting of property values.
`prop1.prop2.prop3`) and also the corresponding setting of property values.
Public fields may also be accessed.
The following example shows how to use dot notation to get the length of a string literal.
The following example shows how to use dot notation to get the length of a literal:
[tabs]
======
@@ -134,7 +133,7 @@ Kotlin::
======
The String's constructor can be called instead of using a string literal, as the following
example shows.
example shows:
[tabs]
======
@@ -146,7 +145,7 @@ Java::
Expression exp = parser.parseExpression("new String('hello world').toUpperCase()"); // <1>
String message = exp.getValue(String.class);
----
<1> Construct a new `String` from the literal and convert it to upper case.
<1> Construct a new `String` from the literal and make it be upper case.
Kotlin::
+
@@ -156,9 +155,10 @@ Kotlin::
val exp = parser.parseExpression("new String('hello world').toUpperCase()") // <1>
val message = exp.getValue(String::class.java)
----
<1> Construct a new `String` from the literal and convert it to upper case.
<1> Construct a new `String` from the literal and make it be upper case.
======
Note the use of the generic method: `public <T> T getValue(Class<T> desiredResultType)`.
Using this method removes the need to cast the value of the expression to the desired
result type. An `EvaluationException` is thrown if the value cannot be cast to the
@@ -166,8 +166,8 @@ type `T` or converted by using the registered type converter.
The more common usage of SpEL is to provide an expression string that is evaluated
against a specific object instance (called the root object). The following example shows
how to retrieve the `name` property from an instance of the `Inventor` class and how to
reference the `name` property in a boolean expression.
how to retrieve the `name` property from an instance of the `Inventor` class or
create a boolean condition:
[tabs]
======
@@ -240,7 +240,7 @@ It excludes Java type references, constructors, and bean references. It also req
you to explicitly choose the level of support for properties and methods in expressions.
By default, the `create()` static factory method enables only read access to properties.
You can also obtain a builder to configure the exact level of support needed, targeting
one or some combination of the following.
one or some combination of the following:
* Custom `PropertyAccessor` only (no reflection)
* Data binding properties for read-only access
@@ -252,15 +252,16 @@ one or some combination of the following.
By default, SpEL uses the conversion service available in Spring core
(`org.springframework.core.convert.ConversionService`). This conversion service comes
with many built-in converters for common conversions, but is also fully extensible so
that you can add custom conversions between types. Additionally, it is generics-aware.
This means that, when you work with generic types in expressions, SpEL attempts
conversions to maintain type correctness for any objects it encounters.
with many built-in converters for common conversions but is also fully extensible so that
you can add custom conversions between types. Additionally, it is
generics-aware. This means that, when you work with generic types in
expressions, SpEL attempts conversions to maintain type correctness for any objects
it encounters.
What does this mean in practice? Suppose assignment, using `setValue()`, is being used
to set a `List` property. The type of the property is actually `List<Boolean>`. SpEL
recognizes that the elements of the list need to be converted to `Boolean` before
being placed in it. The following example shows how to do so.
being placed in it. The following example shows how to do so:
[tabs]
======
@@ -324,7 +325,7 @@ constructor before setting the specified value. If the element type does not hav
default constructor, `null` will be added to the array or list. If there is no built-in
or custom converter that knows how to set the value, `null` will remain in the array or
list at the specified index. The following example demonstrates how to automatically grow
the list.
the list:
[tabs]
======
@@ -379,25 +380,16 @@ Kotlin::
----
======
By default, a SpEL expression cannot contain more than 10,000 characters; however, the
`maxExpressionLength` is configurable. If you create a `SpelExpressionParser`
programmatically, you can specify a custom `maxExpressionLength` when creating the
`SpelParserConfiguration` that you provide to the `SpelExpressionParser`. If you wish to
set the `maxExpressionLength` used for parsing SpEL expressions within an
`ApplicationContext` -- for example, in XML bean definitions, `@Value`, etc. -- you can
set a JVM system property or Spring property named `spring.context.expression.maxLength`
to the maximum expression length needed by your application (see
xref:appendix.adoc#appendix-spring-properties[Supported Spring Properties]).
[[expressions-spel-compilation]]
== SpEL Compilation
Spring provides a basic compiler for SpEL expressions. Expressions are usually
interpreted, which provides a lot of dynamic flexibility during evaluation but does not
provide optimum performance. For occasional expression usage, this is fine, but, when
used by other components such as Spring Integration, performance can be very important,
and there is no real need for the dynamism.
Spring Framework 4.1 includes a basic expression compiler. Expressions are usually
interpreted, which provides a lot of dynamic flexibility during evaluation but
does not provide optimum performance. For occasional expression usage,
this is fine, but, when used by other components such as Spring Integration,
performance can be very important, and there is no real need for the dynamism.
The SpEL compiler is intended to address this need. During evaluation, the compiler
generates a Java class that embodies the expression behavior at runtime and uses that
@@ -410,17 +402,16 @@ information can cause trouble later if the types of the various expression eleme
change over time. For this reason, compilation is best suited to expressions whose
type information is not going to change on repeated evaluations.
Consider the following basic expression.
Consider the following basic expression:
[source,java,indent=0,subs="verbatim,quotes"]
----
someArray[0].someProperty.someOtherProperty < 0.1
someArray[0].someProperty.someOtherProperty < 0.1
----
Because the preceding expression involves array access, some property de-referencing, and
numeric operations, the performance gain can be very noticeable. In an example micro
benchmark run of 50,000 iterations, it took 75ms to evaluate by using the interpreter and
only 3ms using the compiled version of the expression.
Because the preceding expression involves array access, some property de-referencing,
and numeric operations, the performance gain can be very noticeable. In an example
micro benchmark run of 50000 iterations, it took 75ms to evaluate by using the
interpreter and only 3ms using the compiled version of the expression.
[[expressions-compiler-configuration]]
@@ -428,34 +419,33 @@ only 3ms using the compiled version of the expression.
The compiler is not turned on by default, but you can turn it on in either of two
different ways. You can turn it on by using the parser configuration process
(xref:core/expressions/evaluation.adoc#expressions-parser-configuration[discussed
earlier]) or by using a Spring property when SpEL usage is embedded inside another
component. This section discusses both of these options.
(xref:core/expressions/evaluation.adoc#expressions-parser-configuration[discussed earlier]) or by using a Spring property
when SpEL usage is embedded inside another component. This section discusses both of
these options.
The compiler can operate in one of three modes, which are captured in the
`org.springframework.expression.spel.SpelCompilerMode` enum. The modes are as follows.
`org.springframework.expression.spel.SpelCompilerMode` enum. The modes are as follows:
* `OFF` (default): The compiler is switched off.
* `IMMEDIATE`: In immediate mode, the expressions are compiled as soon as possible. This
is typically after the first interpreted evaluation. If the compiled expression fails
(typically due to a type changing, as described earlier), the caller of the expression
evaluation receives an exception.
* `MIXED`: In mixed mode, the expressions silently switch between interpreted and
compiled mode over time. After some number of interpreted runs, they switch to compiled
form and, if something goes wrong with the compiled form (such as a type changing, as
described earlier), the expression automatically switches back to interpreted form
again. Sometime later, it may generate another compiled form and switch to it.
Basically, the exception that the user gets in `IMMEDIATE` mode is instead handled
internally.
is typically after the first interpreted evaluation. If the compiled expression fails
(typically due to a type changing, as described earlier), the caller of the expression
evaluation receives an exception.
* `MIXED`: In mixed mode, the expressions silently switch between interpreted and compiled
mode over time. After some number of interpreted runs, they switch to compiled
form and, if something goes wrong with the compiled form (such as a type changing, as
described earlier), the expression automatically switches back to interpreted form
again. Sometime later, it may generate another compiled form and switch to it. Basically,
the exception that the user gets in `IMMEDIATE` mode is instead handled internally.
`IMMEDIATE` mode exists because `MIXED` mode could cause issues for expressions that
have side effects. If a compiled expression blows up after partially succeeding, it
may have already done something that has affected the state of the system. If this
has happened, the caller may not want it to silently re-run in interpreted mode,
since part of the expression may be run twice.
since part of the expression may be running twice.
After selecting a mode, use the `SpelParserConfiguration` to configure the parser. The
following example shows how to do so.
following example shows how to do so:
[tabs]
======
@@ -492,16 +482,15 @@ Kotlin::
----
======
When you specify the compiler mode, you can also specify a `ClassLoader` (passing `null`
is allowed). Compiled expressions are defined in a child `ClassLoader` created under any
that is supplied. It is important to ensure that, if a `ClassLoader` is specified, it can
see all the types involved in the expression evaluation process. If you do not specify a
`ClassLoader`, a default `ClassLoader` is used (typically the context `ClassLoader` for
the thread that is running during expression evaluation).
When you specify the compiler mode, you can also specify a classloader (passing null is allowed).
Compiled expressions are defined in a child classloader created under any that is supplied.
It is important to ensure that, if a classloader is specified, it can see all the types involved in
the expression evaluation process. If you do not specify a classloader, a default classloader is used
(typically the context classloader for the thread that is running during expression evaluation).
The second way to configure the compiler is for use when SpEL is embedded inside some
other component and it may not be possible to configure it through a configuration
object. In such cases, it is possible to set the `spring.expression.compiler.mode`
object. In these cases, it is possible to set the `spring.expression.compiler.mode`
property via a JVM system property (or via the
xref:appendix.adoc#appendix-spring-properties[`SpringProperties`] mechanism) to one of the
`SpelCompilerMode` enum values (`off`, `immediate`, or `mixed`).
@@ -510,16 +499,18 @@ xref:appendix.adoc#appendix-spring-properties[`SpringProperties`] mechanism) to
[[expressions-compiler-limitations]]
=== Compiler Limitations
Spring does not support compiling every kind of expression. The primary focus is on
common expressions that are likely to be used in performance-critical contexts. The
following kinds of expressions cannot be compiled.
Since Spring Framework 4.1, the basic compilation framework is in place. However, the framework
does not yet support compiling every kind of expression. The initial focus has been on the
common expressions that are likely to be used in performance-critical contexts. The following
kinds of expression cannot be compiled at the moment:
* Expressions involving assignment
* Expressions relying on the conversion service
* Expressions using custom resolvers or accessors
* Expressions using overloaded operators
* Expressions using array construction syntax
* Expressions using selection or projection
Compilation of additional kinds of expressions may be supported in the future.
More types of expressions will be compilable in the future.
@@ -3,11 +3,9 @@
This section lists the classes used in the examples throughout this chapter.
== `Inventor`
[tabs]
======
Java::
Inventor.Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary",chomp="-packages"]
----
@@ -82,7 +80,7 @@ Java::
}
----
Kotlin::
Inventor.kt::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary",chomp="-packages"]
----
@@ -97,11 +95,9 @@ Kotlin::
----
======
== `PlaceOfBirth`
[tabs]
======
Java::
PlaceOfBirth.java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary",chomp="-packages"]
----
@@ -139,7 +135,7 @@ Java::
}
----
Kotlin::
PlaceOfBirth.kt::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary",chomp="-packages"]
----
@@ -149,11 +145,9 @@ Kotlin::
----
======
== `Society`
[tabs]
======
Java::
Society.java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary",chomp="-packages"]
----
@@ -198,7 +192,7 @@ Java::
}
----
Kotlin::
Society.kt::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary",chomp="-packages"]
----
@@ -2,4 +2,24 @@
= Language Reference
:page-section-summary-toc: 1
This section describes how the Spring Expression Language works.
This section describes how the Spring Expression Language works. It covers the following
topics:
* xref:core/expressions/language-ref/literal.adoc[Literal Expressions]
* xref:core/expressions/language-ref/properties-arrays.adoc[Properties, Arrays, Lists, Maps, and Indexers]
* xref:core/expressions/language-ref/inline-lists.adoc[Inline Lists]
* xref:core/expressions/language-ref/inline-maps.adoc[Inline Maps]
* xref:core/expressions/language-ref/array-construction.adoc[Array Construction]
* xref:core/expressions/language-ref/methods.adoc[Methods]
* xref:core/expressions/language-ref/operators.adoc[Operators]
* xref:core/expressions/language-ref/types.adoc[Types]
* xref:core/expressions/language-ref/constructors.adoc[Constructors]
* xref:core/expressions/language-ref/variables.adoc[Variables]
* xref:core/expressions/language-ref/functions.adoc[Functions]
* xref:core/expressions/language-ref/bean-references.adoc[Bean References]
* xref:core/expressions/language-ref/operator-ternary.adoc[Ternary Operator (If-Then-Else)]
* xref:core/expressions/language-ref/operator-elvis.adoc[The Elvis Operator]
* xref:core/expressions/language-ref/operator-safe-navigation.adoc[Safe Navigation Operator]
@@ -13,7 +13,7 @@ Java::
int[] numbers1 = (int[]) parser.parseExpression("new int[4]").getValue(context);
// Array with initializer
int[] numbers2 = (int[]) parser.parseExpression("new int[] {1, 2, 3}").getValue(context);
int[] numbers2 = (int[]) parser.parseExpression("new int[]{1,2,3}").getValue(context);
// Multi dimensional array
int[][] numbers3 = (int[][]) parser.parseExpression("new int[4][5]").getValue(context);
@@ -26,22 +26,14 @@ Kotlin::
val numbers1 = parser.parseExpression("new int[4]").getValue(context) as IntArray
// Array with initializer
val numbers2 = parser.parseExpression("new int[] {1, 2, 3}").getValue(context) as IntArray
val numbers2 = parser.parseExpression("new int[]{1,2,3}").getValue(context) as IntArray
// Multi dimensional array
val numbers3 = parser.parseExpression("new int[4][5]").getValue(context) as Array<IntArray>
----
======
[NOTE]
====
You cannot currently supply an initializer when you construct a multi-dimensional array.
====
[CAUTION]
====
Any expression that constructs an array for example, via `new int[4]` or
`new int[] {1, 2, 3}` cannot be compiled. See
xref:core/expressions/evaluation.adoc#expressions-compiler-limitations[Compiler Limitations]
for details.
====
@@ -13,7 +13,7 @@ Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
// evaluates to ["Smiljan", "Idvor"]
// evaluates to ["SmilJan", "Idvor"]
List placesOfBirth = parser.parseExpression("members.![placeOfBirth.city]")
.getValue(societyContext, List.class);
----
@@ -22,7 +22,7 @@ Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
// evaluates to ["Smiljan", "Idvor"]
// evaluates to ["SmilJan", "Idvor"]
val placesOfBirth = parser.parseExpression("members.![placeOfBirth.city]")
.getValue(societyContext) as List<*>
----
@@ -34,12 +34,5 @@ evaluated against each entry in the map (represented as a Java `Map.Entry`). The
of a projection across a map is a list that consists of the evaluation of the projection
expression against each map entry.
[NOTE]
====
The Spring Expression Language also supports safe navigation for collection projection.
See
xref:core/expressions/language-ref/operator-safe-navigation.adoc#expressions-operator-safe-navigation-selection-and-projection[Safe Collection Selection and Projection]
for details.
====
@@ -59,12 +59,5 @@ the last element. To obtain the first element matching the selection expression,
syntax is `.^[selectionExpression]`. To obtain the last element matching the selection
expression, the syntax is `.$[selectionExpression]`.
[NOTE]
====
The Spring Expression Language also supports safe navigation for collection selection.
See
xref:core/expressions/language-ref/operator-safe-navigation.adoc#expressions-operator-safe-navigation-selection-and-projection[Safe Collection Selection and Projection]
for details.
====
@@ -1,26 +1,9 @@
[[expressions-ref-functions]]
= Functions
You can extend SpEL by registering user-defined functions that can be called within
expressions by using the `#functionName(...)` syntax. Functions can be registered as
variables in `EvaluationContext` implementations via the `setVariable()` method.
[TIP]
====
`StandardEvaluationContext` also defines `registerFunction(...)` methods that provide a
convenient way to register a function as a `java.lang.reflect.Method` or a
`java.lang.invoke.MethodHandle`.
====
[WARNING]
====
Since functions share a common namespace with
xref:core/expressions/language-ref/variables.adoc[variables] in the evaluation context,
care must be taken to ensure that function names and variable names do not overlap.
====
The following example shows how to register a user-defined function to be invoked via
reflection using a `java.lang.reflect.Method`:
You can extend SpEL by registering user-defined functions that can be called within the
expression string. The function is registered through the `EvaluationContext`. The
following example shows how to register a user-defined function:
[tabs]
======
@@ -56,7 +39,11 @@ Java::
public abstract class StringUtils {
public static String reverseString(String input) {
return new StringBuilder(input).reverse().toString();
StringBuilder backwards = new StringBuilder(input.length());
for (int i = 0; i < input.length(); i++) {
backwards.append(input.charAt(input.length() - 1 - i));
}
return backwards.toString();
}
}
----
@@ -66,12 +53,16 @@ Kotlin::
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
fun reverseString(input: String): String {
return StringBuilder(input).reverse().toString()
val backwards = StringBuilder(input.length)
for (i in 0 until input.length) {
backwards.append(input[input.length - 1 - i])
}
return backwards.toString()
}
----
======
You can register and use the preceding method, as the following example shows:
You can then register and use the preceding method, as the following example shows:
[tabs]
======
@@ -83,9 +74,8 @@ Java::
EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataBinding().build();
context.setVariable("reverseString",
StringUtils.class.getMethod("reverseString", String.class));
StringUtils.class.getDeclaredMethod("reverseString", String.class));
// evaluates to "olleh"
String helloWorldReversed = parser.parseExpression(
"#reverseString('hello')").getValue(context, String.class);
----
@@ -97,108 +87,12 @@ Kotlin::
val parser = SpelExpressionParser()
val context = SimpleEvaluationContext.forReadOnlyDataBinding().build()
context.setVariable("reverseString", ::reverseString.javaMethod)
context.setVariable("reverseString", ::reverseString::javaMethod)
// evaluates to "olleh"
val helloWorldReversed = parser.parseExpression(
"#reverseString('hello')").getValue(context, String::class.java)
----
======
A function can also be registered as a `java.lang.invoke.MethodHandle`. This enables
potentially more efficient use cases if the `MethodHandle` target and parameters have
been fully bound prior to registration; however, partially bound handles are also
supported.
Consider the `String#formatted(String, Object...)` instance method, which produces a
message according to a template and a variable number of arguments.
You can register and use the `formatted` method as a `MethodHandle`, as the following
example shows:
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
ExpressionParser parser = new SpelExpressionParser();
EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataBinding().build();
MethodHandle mh = MethodHandles.lookup().findVirtual(String.class, "formatted",
MethodType.methodType(String.class, Object[].class));
context.setVariable("message", mh);
// evaluates to "Simple message: <Hello World>"
String message = parser.parseExpression("#message('Simple message: <%s>', 'Hello World', 'ignored')")
.getValue(context, String.class);
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
val parser = SpelExpressionParser()
val context = SimpleEvaluationContext.forReadOnlyDataBinding().build()
val mh = MethodHandles.lookup().findVirtual(String::class.java, "formatted",
MethodType.methodType(String::class.java, Array<Any>::class.java))
context.setVariable("message", mh)
// evaluates to "Simple message: <Hello World>"
val message = parser.parseExpression("#message('Simple message: <%s>', 'Hello World', 'ignored')")
.getValue(context, String::class.java)
----
======
As hinted above, binding a `MethodHandle` and registering the bound `MethodHandle` is also
supported. This is likely to be more performant if both the target and all the arguments
are bound. In that case no arguments are necessary in the SpEL expression, as the
following example shows:
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
ExpressionParser parser = new SpelExpressionParser();
EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataBinding().build();
String template = "This is a %s message with %s words: <%s>";
Object varargs = new Object[] { "prerecorded", 3, "Oh Hello World!", "ignored" };
MethodHandle mh = MethodHandles.lookup().findVirtual(String.class, "formatted",
MethodType.methodType(String.class, Object[].class))
.bindTo(template)
.bindTo(varargs); //here we have to provide arguments in a single array binding
context.setVariable("message", mh);
// evaluates to "This is a prerecorded message with 3 words: <Oh Hello World!>"
String message = parser.parseExpression("#message()")
.getValue(context, String.class);
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
val parser = SpelExpressionParser()
val context = SimpleEvaluationContext.forReadOnlyDataBinding().build()
val template = "This is a %s message with %s words: <%s>"
val varargs = arrayOf("prerecorded", 3, "Oh Hello World!", "ignored")
val mh = MethodHandles.lookup().findVirtual(String::class.java, "formatted",
MethodType.methodType(String::class.java, Array<Any>::class.java))
.bindTo(template)
.bindTo(varargs) //here we have to provide arguments in a single array binding
context.setVariable("message", mh)
// evaluates to "This is a prerecorded message with 3 words: <Oh Hello World!>"
val message = parser.parseExpression("#message()")
.getValue(context, String::class.java)
----
======
@@ -3,46 +3,20 @@
SpEL supports the following types of literal expressions.
String ::
Strings can be delimited by single quotation marks (`'`) or double quotation marks
(`"`). To include a single quotation mark within a string literal enclosed in single
quotation marks, use two adjacent single quotation mark characters. Similarly, to
include a double quotation mark within a string literal enclosed in double quotation
marks, use two adjacent double quotation mark characters.
Number ::
Numbers support the use of the negative sign, exponential notation, and decimal points.
* Integer: `int` or `long`
* Hexadecimal: `int` or `long`
* Real: `float` or `double`
** By default, real numbers are parsed using `Double.parseDouble()`.
Boolean ::
`true` or `false`
Null ::
`null`
- strings
- numeric values: integer (`int` or `long`), hexadecimal (`int` or `long`), real (`float`
or `double`)
- boolean values: `true` or `false`
- null
[NOTE]
====
Due to the design and implementation of the Spring Expression Language, literal numbers
are always stored internally as positive numbers.
Strings can delimited by single quotation marks (`'`) or double quotation marks (`"`). To
include a single quotation mark within a string literal enclosed in single quotation
marks, use two adjacent single quotation mark characters. Similarly, to include a double
quotation mark within a string literal enclosed in double quotation marks, use two
adjacent double quotation mark characters.
For example, `-2` is stored internally as a positive `2` which is then negated while
evaluating the expression (by calculating the value of `0 - 2`).
This means that it is not possible to represent a negative literal number equal to the
minimum value of that type of number in Java. For example, the minimum supported value
for an `int` in Java is `Integer.MIN_VALUE` which has a value of `-2147483648`. However,
if you include `-2147483648` in a SpEL expression, an exception will be thrown informing
you that the value `2147483648` cannot be parsed as an `int` (because it exceeds the
value of `Integer.MAX_VALUE` which is `2147483647`).
If you need to use the minimum value for a particular type of number within a SpEL
expression, you can either reference the `MIN_VALUE` constant for the respective wrapper
type (such as `Integer.MIN_VALUE`, `Long.MIN_VALUE`, etc.) or calculate the minimum
value. For example, to use the minimum integer value:
- `T(Integer).MIN_VALUE` -- requires a `StandardEvaluationContext`
- `-2^31` -- can be used with any type of `EvaluationContext`
====
Numbers support the use of the negative sign, exponential notation, and decimal points.
By default, real numbers are parsed by using `Double.parseDouble()`.
The following listing shows simple usage of literals. Typically, they are not used in
isolation like this but, rather, as part of a more complex expression -- for example,
@@ -38,10 +38,6 @@ Kotlin::
----
======
NOTE: The SpEL Elvis operator also checks for _empty_ Strings in addition to `null` objects.
The original snippet is thus only close to emulating the semantics of the operator (it would need an
additional `!name.isEmpty()` check).
The following listing shows a more complex example:
[tabs]
@@ -57,7 +53,7 @@ Java::
String name = parser.parseExpression("name?:'Elvis Presley'").getValue(context, tesla, String.class);
System.out.println(name); // Nikola Tesla
tesla.setName("");
tesla.setName(null);
name = parser.parseExpression("name?:'Elvis Presley'").getValue(context, tesla, String.class);
System.out.println(name); // Elvis Presley
----
@@ -73,7 +69,7 @@ Kotlin::
var name = parser.parseExpression("name?:'Elvis Presley'").getValue(context, tesla, String::class.java)
println(name) // Nikola Tesla
tesla.setName("")
tesla.setName(null)
name = parser.parseExpression("name?:'Elvis Presley'").getValue(context, tesla, String::class.java)
println(name) // Elvis Presley
----
@@ -1,27 +1,12 @@
[[expressions-operator-safe-navigation]]
= Safe Navigation Operator
The safe navigation operator (`?`) is used to avoid a `NullPointerException` and comes
from the https://www.groovy-lang.org/operators.html#_safe_navigation_operator[Groovy]
language. Typically, when you have a reference to an object, you might need to verify
that it is not `null` before accessing methods or properties of the object. To avoid
this, the safe navigation operator returns `null` for the particular null-safe operation
instead of throwing an exception.
[WARNING]
====
When the safe navigation operator evaluates to `null` for a particular null-safe
operation within a compound expression, the remainder of the compound expression will
still be evaluated.
See <<expressions-operator-safe-navigation-compound-expressions>> for details.
====
[[expressions-operator-safe-navigation-property-access]]
== Safe Property and Method Access
The following example shows how to use the safe navigation operator for property access
(`?.`).
The safe navigation operator is used to avoid a `NullPointerException` and comes from
the https://www.groovy-lang.org/operators.html#_safe_navigation_operator[Groovy]
language. Typically, when you have a reference to an object, you might need to verify that
it is not null before accessing methods or properties of the object. To avoid this, the
safe navigation operator returns null instead of throwing an exception. The following
example shows how to use the safe navigation operator:
[tabs]
======
@@ -35,18 +20,13 @@ Java::
Inventor tesla = new Inventor("Nikola Tesla", "Serbian");
tesla.setPlaceOfBirth(new PlaceOfBirth("Smiljan"));
// evaluates to "Smiljan"
String city = parser.parseExpression("placeOfBirth?.city") // <1>
.getValue(context, tesla, String.class);
String city = parser.parseExpression("placeOfBirth?.city").getValue(context, tesla, String.class);
System.out.println(city); // Smiljan
tesla.setPlaceOfBirth(null);
// evaluates to null - does not throw NullPointerException
city = parser.parseExpression("placeOfBirth?.city") // <2>
.getValue(context, tesla, String.class);
city = parser.parseExpression("placeOfBirth?.city").getValue(context, tesla, String.class);
System.out.println(city); // null - does not throw NullPointerException!!!
----
<1> Use safe navigation operator on non-null `placeOfBirth` property
<2> Use safe navigation operator on null `placeOfBirth` property
Kotlin::
+
@@ -58,306 +38,14 @@ Kotlin::
val tesla = Inventor("Nikola Tesla", "Serbian")
tesla.setPlaceOfBirth(PlaceOfBirth("Smiljan"))
// evaluates to "Smiljan"
var city = parser.parseExpression("placeOfBirth?.city") // <1>
.getValue(context, tesla, String::class.java)
var city = parser.parseExpression("placeOfBirth?.city").getValue(context, tesla, String::class.java)
println(city) // Smiljan
tesla.setPlaceOfBirth(null)
// evaluates to null - does not throw NullPointerException
city = parser.parseExpression("placeOfBirth?.city") // <2>
.getValue(context, tesla, String::class.java)
city = parser.parseExpression("placeOfBirth?.city").getValue(context, tesla, String::class.java)
println(city) // null - does not throw NullPointerException!!!
----
<1> Use safe navigation operator on non-null `placeOfBirth` property
<2> Use safe navigation operator on null `placeOfBirth` property
======
[NOTE]
====
The safe navigation operator also applies to method invocations on an object.
For example, the expression `#calculator?.max(4, 2)` evaluates to `null` if the
`#calculator` variable has not been configured in the context. Otherwise, the
`max(int, int)` method will be invoked on the `#calculator`.
====
[[expressions-operator-safe-navigation-selection-and-projection]]
== Safe Collection Selection and Projection
The Spring Expression Language supports safe navigation for
xref:core/expressions/language-ref/collection-selection.adoc[collection selection] and
xref:core/expressions/language-ref/collection-projection.adoc[collection projection] via
the following operators.
* null-safe selection: `?.?`
* null-safe select first: `?.^`
* null-safe select last: `?.$`
* null-safe projection: `?.!`
The following example shows how to use the safe navigation operator for collection
selection (`?.?`).
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
ExpressionParser parser = new SpelExpressionParser();
IEEE society = new IEEE();
StandardEvaluationContext context = new StandardEvaluationContext(society);
String expression = "members?.?[nationality == 'Serbian']"; // <1>
// evaluates to [Inventor("Nikola Tesla")]
List<Inventor> list = (List<Inventor>) parser.parseExpression(expression)
.getValue(context);
society.members = null;
// evaluates to null - does not throw a NullPointerException
list = (List<Inventor>) parser.parseExpression(expression)
.getValue(context);
----
<1> Use null-safe selection operator on potentially null `members` list
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
val parser = SpelExpressionParser()
val society = IEEE()
val context = StandardEvaluationContext(society)
val expression = "members?.?[nationality == 'Serbian']" // <1>
// evaluates to [Inventor("Nikola Tesla")]
var list = parser.parseExpression(expression)
.getValue(context) as List<Inventor>
society.members = null
// evaluates to null - does not throw a NullPointerException
list = parser.parseExpression(expression)
.getValue(context) as List<Inventor>
----
<1> Use null-safe selection operator on potentially null `members` list
======
The following example shows how to use the "null-safe select first" operator for
collections (`?.^`).
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
ExpressionParser parser = new SpelExpressionParser();
IEEE society = new IEEE();
StandardEvaluationContext context = new StandardEvaluationContext(society);
String expression =
"members?.^[nationality == 'Serbian' || nationality == 'Idvor']"; // <1>
// evaluates to Inventor("Nikola Tesla")
Inventor inventor = parser.parseExpression(expression)
.getValue(context, Inventor.class);
society.members = null;
// evaluates to null - does not throw a NullPointerException
inventor = parser.parseExpression(expression)
.getValue(context, Inventor.class);
----
<1> Use "null-safe select first" operator on potentially null `members` list
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
val parser = SpelExpressionParser()
val society = IEEE()
val context = StandardEvaluationContext(society)
val expression =
"members?.^[nationality == 'Serbian' || nationality == 'Idvor']" // <1>
// evaluates to Inventor("Nikola Tesla")
var inventor = parser.parseExpression(expression)
.getValue(context, Inventor::class.java)
society.members = null
// evaluates to null - does not throw a NullPointerException
inventor = parser.parseExpression(expression)
.getValue(context, Inventor::class.java)
----
<1> Use "null-safe select first" operator on potentially null `members` list
======
The following example shows how to use the "null-safe select last" operator for
collections (`?.$`).
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
ExpressionParser parser = new SpelExpressionParser();
IEEE society = new IEEE();
StandardEvaluationContext context = new StandardEvaluationContext(society);
String expression =
"members?.$[nationality == 'Serbian' || nationality == 'Idvor']"; // <1>
// evaluates to Inventor("Pupin")
Inventor inventor = parser.parseExpression(expression)
.getValue(context, Inventor.class);
society.members = null;
// evaluates to null - does not throw a NullPointerException
inventor = parser.parseExpression(expression)
.getValue(context, Inventor.class);
----
<1> Use "null-safe select last" operator on potentially null `members` list
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
val parser = SpelExpressionParser()
val society = IEEE()
val context = StandardEvaluationContext(society)
val expression =
"members?.$[nationality == 'Serbian' || nationality == 'Idvor']" // <1>
// evaluates to Inventor("Pupin")
var inventor = parser.parseExpression(expression)
.getValue(context, Inventor::class.java)
society.members = null
// evaluates to null - does not throw a NullPointerException
inventor = parser.parseExpression(expression)
.getValue(context, Inventor::class.java)
----
<1> Use "null-safe select last" operator on potentially null `members` list
======
The following example shows how to use the safe navigation operator for collection
projection (`?.!`).
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
ExpressionParser parser = new SpelExpressionParser();
IEEE society = new IEEE();
StandardEvaluationContext context = new StandardEvaluationContext(society);
// evaluates to ["Smiljan", "Idvor"]
List placesOfBirth = parser.parseExpression("members?.![placeOfBirth.city]") // <1>
.getValue(context, List.class);
society.members = null;
// evaluates to null - does not throw a NullPointerException
placesOfBirth = parser.parseExpression("members?.![placeOfBirth.city]") // <2>
.getValue(context, List.class);
----
<1> Use null-safe projection operator on non-null `members` list
<2> Use null-safe projection operator on null `members` list
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
val parser = SpelExpressionParser()
val society = IEEE()
val context = StandardEvaluationContext(society)
// evaluates to ["Smiljan", "Idvor"]
var placesOfBirth = parser.parseExpression("members?.![placeOfBirth.city]") // <1>
.getValue(context, List::class.java)
society.members = null
// evaluates to null - does not throw a NullPointerException
placesOfBirth = parser.parseExpression("members?.![placeOfBirth.city]") // <2>
.getValue(context, List::class.java)
----
<1> Use null-safe projection operator on non-null `members` list
<2> Use null-safe projection operator on null `members` list
======
[[expressions-operator-safe-navigation-compound-expressions]]
== Null-safe Operations in Compound Expressions
As mentioned at the beginning of this section, when the safe navigation operator
evaluates to `null` for a particular null-safe operation within a compound expression,
the remainder of the compound expression will still be evaluated. This means that the
safe navigation operator must be applied throughout a compound expression in order to
avoid any unwanted `NullPointerException`.
Given the expression `#person?.address.city`, if `#person` is `null` the safe navigation
operator (`?.`) ensures that no exception will be thrown when attempting to access the
`address` property of `#person`. However, since `#person?.address` evaluates to `null`, a
`NullPointerException` will be thrown when attempting to access the `city` property of
`null`. To address that, you can apply null-safe navigation throughout the compound
expression as in `#person?.address?.city`. That expression will safely evaluate to `null`
if either `#person` or `#person?.address` evaluates to `null`.
The following example demonstrates how to use the "null-safe select first" operator
(`?.^`) on a collection combined with null-safe property access (`?.`) within a compound
expression. If `members` is `null`, the result of the "null-safe select first" operator
(`members?.^[nationality == 'Serbian']`) evaluates to `null`, and the additional use of
the safe navigation operator (`?.name`) ensures that the entire compound expression
evaluates to `null` instead of throwing an exception.
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
ExpressionParser parser = new SpelExpressionParser();
IEEE society = new IEEE();
StandardEvaluationContext context = new StandardEvaluationContext(society);
String expression = "members?.^[nationality == 'Serbian']?.name"; // <1>
// evaluates to "Nikola Tesla"
String name = parser.parseExpression(expression)
.getValue(context, String.class);
society.members = null;
// evaluates to null - does not throw a NullPointerException
name = parser.parseExpression(expression)
.getValue(context, String.class);
----
<1> Use "null-safe select first" and null-safe property access operators within compound expression.
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
val parser = SpelExpressionParser()
val society = IEEE()
val context = StandardEvaluationContext(society)
val expression = "members?.^[nationality == 'Serbian']?.name" // <1>
// evaluates to "Nikola Tesla"
String name = parser.parseExpression(expression)
.getValue(context, String::class.java)
society.members = null
// evaluates to null - does not throw a NullPointerException
name = parser.parseExpression(expression)
.getValue(context, String::class.java)
----
<1> Use "null-safe select first" and null-safe property access operators within compound expression.
======
@@ -5,11 +5,8 @@ The Spring Expression Language supports the following kinds of operators:
* xref:core/expressions/language-ref/operators.adoc#expressions-operators-relational[Relational Operators]
* xref:core/expressions/language-ref/operators.adoc#expressions-operators-logical[Logical Operators]
* xref:core/expressions/language-ref/operators.adoc#expressions-operators-string[String Operators]
* xref:core/expressions/language-ref/operators.adoc#expressions-operators-mathematical[Mathematical Operators]
* xref:core/expressions/language-ref/operators.adoc#expressions-assignment[The Assignment Operator]
* xref:core/expressions/language-ref/operators.adoc#expressions-operators-overloaded[Overloaded Operators]
[[expressions-operators-relational]]
@@ -18,7 +15,7 @@ The Spring Expression Language supports the following kinds of operators:
The relational operators (equal, not equal, less than, less than or equal, greater than,
and greater than or equal) are supported by using standard operator notation.
These operators work on `Number` types as well as types implementing `Comparable`.
The following listing shows a few examples of relational operators:
The following listing shows a few examples of operators:
[tabs]
======
@@ -68,22 +65,8 @@ If you prefer numeric comparisons instead, avoid number-based `null` comparisons
in favor of comparisons against zero (for example, `X > 0` or `X < 0`).
====
Each symbolic operator can also be specified as a purely textual equivalent. This avoids
problems where the symbols used have special meaning for the document type in which the
expression is embedded (such as in an XML document). The textual equivalents are:
* `lt` (`<`)
* `gt` (`>`)
* `le` (`\<=`)
* `ge` (`>=`)
* `eq` (`==`)
* `ne` (`!=`)
All of the textual operators are case-insensitive.
In addition to the standard relational operators, SpEL supports the `between`,
`instanceof`, and regular expression-based `matches` operators. The following listing
shows examples of all three:
In addition to the standard relational operators, SpEL supports the `instanceof` and regular
expression-based `matches` operator. The following listing shows examples of both:
[tabs]
======
@@ -91,38 +74,16 @@ Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
boolean result;
// evaluates to true
result = parser.parseExpression(
"1 between {1, 5}").getValue(Boolean.class);
// evaluates to false
result = parser.parseExpression(
"1 between {10, 15}").getValue(Boolean.class);
// evaluates to true
result = parser.parseExpression(
"'elephant' between {'aardvark', 'zebra'}").getValue(Boolean.class);
// evaluates to false
result = parser.parseExpression(
"'elephant' between {'aardvark', 'cobra'}").getValue(Boolean.class);
// evaluates to true
result = parser.parseExpression(
"123 instanceof T(Integer)").getValue(Boolean.class);
// evaluates to false
result = parser.parseExpression(
boolean falseValue = parser.parseExpression(
"'xyz' instanceof T(Integer)").getValue(Boolean.class);
// evaluates to true
result = parser.parseExpression(
boolean trueValue = parser.parseExpression(
"'5.00' matches '^-?\\d+(\\.\\d{2})?$'").getValue(Boolean.class);
// evaluates to false
result = parser.parseExpression(
boolean falseValue = parser.parseExpression(
"'5.0067' matches '^-?\\d+(\\.\\d{2})?$'").getValue(Boolean.class);
----
@@ -130,65 +91,50 @@ Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
// evaluates to true
var result = parser.parseExpression(
"1 between {1, 5}").getValue(Boolean::class.java)
// evaluates to false
result = parser.parseExpression(
"1 between {10, 15}").getValue(Boolean::class.java)
// evaluates to true
result = parser.parseExpression(
"'elephant' between {'aardvark', 'zebra'}").getValue(Boolean::class.java)
// evaluates to false
result = parser.parseExpression(
"'elephant' between {'aardvark', 'cobra'}").getValue(Boolean::class.java)
// evaluates to true
result = parser.parseExpression(
"123 instanceof T(Integer)").getValue(Boolean::class.java)
// evaluates to false
result = parser.parseExpression(
val falseValue = parser.parseExpression(
"'xyz' instanceof T(Integer)").getValue(Boolean::class.java)
// evaluates to true
result = parser.parseExpression(
val trueValue = parser.parseExpression(
"'5.00' matches '^-?\\d+(\\.\\d{2})?$'").getValue(Boolean::class.java)
// evaluates to false
result = parser.parseExpression(
val falseValue = parser.parseExpression(
"'5.0067' matches '^-?\\d+(\\.\\d{2})?$'").getValue(Boolean::class.java)
----
======
[CAUTION]
====
The syntax for the `between` operator is `<input> between {<range_begin>, <range_end>}`,
which is effectively a shortcut for `<input> >= <range_begin> && <input> \<= <range_end>}`.
Consequently, `1 between {1, 5}` evaluates to `true`, while `1 between {5, 1}` evaluates
to `false`.
====
CAUTION: Be careful with primitive types, as they are immediately boxed up to their
wrapper types. For example, `1 instanceof T(int)` evaluates to `false`, while
`1 instanceof T(Integer)` evaluates to `true`.
`1 instanceof T(Integer)` evaluates to `true`, as expected.
Each symbolic operator can also be specified as a purely alphabetic equivalent. This
avoids problems where the symbols used have special meaning for the document type in
which the expression is embedded (such as in an XML document). The textual equivalents are:
* `lt` (`<`)
* `gt` (`>`)
* `le` (`\<=`)
* `ge` (`>=`)
* `eq` (`==`)
* `ne` (`!=`)
* `div` (`/`)
* `mod` (`%`)
* `not` (`!`).
All of the textual operators are case-insensitive.
[[expressions-operators-logical]]
== Logical Operators
SpEL supports the following logical (`boolean`) operators:
SpEL supports the following logical operators:
* `and` (`&&`)
* `or` (`||`)
* `not` (`!`)
All of the textual operators are case-insensitive.
The following example shows how to use the logical operators:
[tabs]
@@ -221,7 +167,6 @@ Java::
boolean falseValue = parser.parseExpression("!true").getValue(Boolean.class);
// -- AND and NOT --
String expression = "isMember('Nikola Tesla') and !isMember('Mihajlo Pupin')";
boolean falseValue = parser.parseExpression(expression).getValue(societyContext, Boolean.class);
----
@@ -254,105 +199,20 @@ Kotlin::
val falseValue = parser.parseExpression("!true").getValue(Boolean::class.java)
// -- AND and NOT --
val expression = "isMember('Nikola Tesla') and !isMember('Mihajlo Pupin')"
val falseValue = parser.parseExpression(expression).getValue(societyContext, Boolean::class.java)
----
======
[[expressions-operators-string]]
== String Operators
You can use the following operators on strings.
* concatenation (`+`)
* subtraction (`-`)
- for use with a string containing a single character
* repeat (`*`)
The following example shows the `String` operators in use:
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
// -- Concatenation --
// evaluates to "hello world"
String helloWorld = parser.parseExpression("'hello' + ' ' + 'world'")
.getValue(String.class);
// -- Character Subtraction --
// evaluates to 'a'
char ch = parser.parseExpression("'d' - 3")
.getValue(char.class);
// -- Repeat --
// evaluates to "abcabc"
String repeated = parser.parseExpression("'abc' * 2")
.getValue(String.class);
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
// -- Concatenation --
// evaluates to "hello world"
val helloWorld = parser.parseExpression("'hello' + ' ' + 'world'")
.getValue(String::class.java)
// -- Character Subtraction --
// evaluates to 'a'
val ch = parser.parseExpression("'d' - 3")
.getValue(Character::class.java);
// -- Repeat --
// evaluates to "abcabc"
val repeated = parser.parseExpression("'abc' * 2")
.getValue(String::class.java);
----
======
[[expressions-operators-mathematical]]
== Mathematical Operators
You can use the following operators on numbers, and standard operator precedence is enforced.
* addition (`+`)
* subtraction (`-`)
* increment (`{pp}`)
* decrement (`--`)
* multiplication (`*`)
* division (`/`)
* modulus (`%`)
* exponential power (`^`)
The division and modulus operators can also be specified as a purely textual equivalent.
This avoids problems where the symbols used have special meaning for the document type in
which the expression is embedded (such as in an XML document). The textual equivalents
are:
* `div` (`/`)
* `mod` (`%`)
All of the textual operators are case-insensitive.
[NOTE]
====
The increment and decrement operators can be used with either prefix (`{pp}A`, `--A`) or
postfix (`A{pp}`, `A--`) notation with variables or properties that can be written to.
====
The following example shows the mathematical operators in use:
You can use the addition operator (`+`) on both numbers and strings. You can use the
subtraction (`-`), multiplication (`*`), and division (`/`) operators only on numbers.
You can also use the modulus (`%`) and exponential power (`^`) operators on numbers.
Standard operator precedence is enforced. The following example shows the mathematical
operators in use:
[tabs]
======
@@ -360,131 +220,67 @@ Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
Inventor inventor = new Inventor();
EvaluationContext context = SimpleEvaluationContext.forReadWriteDataBinding().build();
// Addition
int two = parser.parseExpression("1 + 1").getValue(Integer.class); // 2
// -- Addition --
String testString = parser.parseExpression(
"'test' + ' ' + 'string'").getValue(String.class); // 'test string'
int two = parser.parseExpression("1 + 1").getValue(int.class); // 2
// Subtraction
int four = parser.parseExpression("1 - -3").getValue(Integer.class); // 4
// -- Subtraction --
double d = parser.parseExpression("1000.00 - 1e4").getValue(Double.class); // -9000
int four = parser.parseExpression("1 - -3").getValue(int.class); // 4
// Multiplication
int six = parser.parseExpression("-2 * -3").getValue(Integer.class); // 6
double d = parser.parseExpression("1000.00 - 1e4").getValue(double.class); // -9000
double twentyFour = parser.parseExpression("2.0 * 3e0 * 4").getValue(Double.class); // 24.0
// -- Increment --
// Division
int minusTwo = parser.parseExpression("6 / -3").getValue(Integer.class); // -2
// The counter property in Inventor has an initial value of 0.
double one = parser.parseExpression("8.0 / 4e0 / 2").getValue(Double.class); // 1.0
// evaluates to 2; counter is now 1
two = parser.parseExpression("counter++ + 2").getValue(context, inventor, int.class);
// Modulus
int three = parser.parseExpression("7 % 4").getValue(Integer.class); // 3
// evaluates to 5; counter is now 2
int five = parser.parseExpression("3 + ++counter").getValue(context, inventor, int.class);
int one = parser.parseExpression("8 / 5 % 2").getValue(Integer.class); // 1
// -- Decrement --
// The counter property in Inventor has a value of 2.
// evaluates to 6; counter is now 1
int six = parser.parseExpression("counter-- + 4").getValue(context, inventor, int.class);
// evaluates to 5; counter is now 0
five = parser.parseExpression("5 + --counter").getValue(context, inventor, int.class);
// -- Multiplication --
six = parser.parseExpression("-2 * -3").getValue(int.class); // 6
double twentyFour = parser.parseExpression("2.0 * 3e0 * 4").getValue(double.class); // 24.0
// -- Division --
int minusTwo = parser.parseExpression("6 / -3").getValue(int.class); // -2
double one = parser.parseExpression("8.0 / 4e0 / 2").getValue(double.class); // 1.0
// -- Modulus --
int three = parser.parseExpression("7 % 4").getValue(int.class); // 3
int oneInt = parser.parseExpression("8 / 5 % 2").getValue(int.class); // 1
// -- Exponential power --
int maxInt = parser.parseExpression("(2^31) - 1").getValue(int.class); // Integer.MAX_VALUE
int minInt = parser.parseExpression("-2^31").getValue(int.class); // Integer.MIN_VALUE
// -- Operator precedence --
int minusTwentyOne = parser.parseExpression("1+2-3*8").getValue(int.class); // -21
// Operator precedence
int minusTwentyOne = parser.parseExpression("1+2-3*8").getValue(Integer.class); // -21
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
val inventor = Inventor()
val context = SimpleEvaluationContext.forReadWriteDataBinding().build()
// Addition
val two = parser.parseExpression("1 + 1").getValue(Int::class.java) // 2
// -- Addition --
var two = parser.parseExpression("1 + 1").getValue(Int::class.java) // 2
// -- Subtraction --
val testString = parser.parseExpression(
"'test' + ' ' + 'string'").getValue(String::class.java) // 'test string'
// Subtraction
val four = parser.parseExpression("1 - -3").getValue(Int::class.java) // 4
val d = parser.parseExpression("1000.00 - 1e4").getValue(Double::class.java) // -9000
// -- Increment --
// The counter property in Inventor has an initial value of 0.
// evaluates to 2; counter is now 1
two = parser.parseExpression("counter++ + 2").getValue(context, inventor, Int::class.java)
// evaluates to 5; counter is now 2
var five = parser.parseExpression("3 + ++counter").getValue(context, inventor, Int::class.java)
// -- Decrement --
// The counter property in Inventor has a value of 2.
// evaluates to 6; counter is now 1
var six = parser.parseExpression("counter-- + 4").getValue(context, inventor, Int::class.java)
// evaluates to 5; counter is now 0
five = parser.parseExpression("5 + --counter").getValue(context, inventor, Int::class.java)
// -- Multiplication --
six = parser.parseExpression("-2 * -3").getValue(Int::class.java) // 6
// Multiplication
val six = parser.parseExpression("-2 * -3").getValue(Int::class.java) // 6
val twentyFour = parser.parseExpression("2.0 * 3e0 * 4").getValue(Double::class.java) // 24.0
// -- Division --
// Division
val minusTwo = parser.parseExpression("6 / -3").getValue(Int::class.java) // -2
val one = parser.parseExpression("8.0 / 4e0 / 2").getValue(Double::class.java) // 1.0
// -- Modulus --
// Modulus
val three = parser.parseExpression("7 % 4").getValue(Int::class.java) // 3
val oneInt = parser.parseExpression("8 / 5 % 2").getValue(Int::class.java) // 1
// -- Exponential power --
val maxInt = parser.parseExpression("(2^31) - 1").getValue(Int::class.java) // Integer.MAX_VALUE
val minInt = parser.parseExpression("-2^31").getValue(Int::class.java) // Integer.MIN_VALUE
// -- Operator precedence --
val one = parser.parseExpression("8 / 5 % 2").getValue(Int::class.java) // 1
// Operator precedence
val minusTwentyOne = parser.parseExpression("1+2-3*8").getValue(Int::class.java) // -21
----
======
@@ -529,83 +325,3 @@ Kotlin::
======
[[expressions-operators-overloaded]]
== Overloaded Operators
By default, the mathematical operations defined in SpEL's `Operation` enum (`ADD`,
`SUBTRACT`, `DIVIDE`, `MULTIPLY`, `MODULUS`, and `POWER`) support simple types like
numbers. By providing an implementation of `OperatorOverloader`, the expression language
can support these operations on other types.
For example, if we want to overload the `ADD` operator to allow two lists to be
concatenated using the `+` sign, we can implement a custom `OperatorOverloader` as
follows.
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
pubic class ListConcatenation implements OperatorOverloader {
@Override
public boolean overridesOperation(Operation operation, Object left, Object right) {
return (operation == Operation.ADD &&
left instanceof List && right instanceof List);
}
@Override
@SuppressWarnings("unchecked")
public Object operate(Operation operation, Object left, Object right) {
if (operation == Operation.ADD &&
left instanceof List list1 && right instanceof List list2) {
List result = new ArrayList(list1);
result.addAll(list2);
return result;
}
throw new UnsupportedOperationException(
"No overload for operation %s and operands [%s] and [%s]"
.formatted(operation, left, right));
}
}
----
If we register `ListConcatenation` as the `OperatorOverloader` in a
`StandardEvaluationContext`, we can then evaluate expressions like `{1, 2, 3} + {4, 5}`
as demonstrated in the following example.
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
StandardEvaluationContext context = new StandardEvaluationContext();
context.setOperatorOverloader(new ListConcatenation());
// evaluates to a new list: [1, 2, 3, 4, 5]
parser.parseExpression("{1, 2, 3} + {2 + 2, 5}").getValue(context, List.class);
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
StandardEvaluationContext context = StandardEvaluationContext()
context.setOperatorOverloader(ListConcatenation())
// evaluates to a new list: [1, 2, 3, 4, 5]
parser.parseExpression("{1, 2, 3} + {2 + 2, 5}").getValue(context, List::class.java)
----
======
[NOTE]
====
An `OperatorOverloader` does not change the default semantics for an operator. For
example, `2 + 2` in the above example still evaluates to `4`.
====
[CAUTION]
====
Any expression that uses an overloaded operator cannot be compiled. See
xref:core/expressions/evaluation.adoc#expressions-compiler-limitations[Compiler Limitations]
for details.
====
@@ -1,5 +1,5 @@
[[expressions-templating]]
= Expression Templating
= Expression templating
Expression templates allow mixing literal text with one or more evaluation blocks.
Each evaluation block is delimited with prefix and suffix characters that you can
@@ -32,13 +32,53 @@ Kotlin::
======
The string is evaluated by concatenating the literal text `'random number is '` with the
result of evaluating the expression inside the `#{ }` delimiters (in this case, the
result of calling that `random()` method). The second argument to the `parseExpression()`
method is of the type `ParserContext`. The `ParserContext` interface is used to influence
how the expression is parsed in order to support the expression templating functionality.
The `TemplateParserContext` used in the previous example resides in the
`org.springframework.expression.common` package and is an implementation of the
`ParserContext` which by default configures the prefix and suffix to `#{` and `}`,
respectively.
result of evaluating the expression inside the `#{ }` delimiter (in this case, the result
of calling that `random()` method). The second argument to the `parseExpression()` method
is of the type `ParserContext`. The `ParserContext` interface is used to influence how
the expression is parsed in order to support the expression templating functionality.
The definition of `TemplateParserContext` follows:
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
public class TemplateParserContext implements ParserContext {
public String getExpressionPrefix() {
return "#{";
}
public String getExpressionSuffix() {
return "}";
}
public boolean isTemplate() {
return true;
}
}
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
class TemplateParserContext : ParserContext {
override fun getExpressionPrefix(): String {
return "#{"
}
override fun getExpressionSuffix(): String {
return "}"
}
override fun isTemplate(): Boolean {
return true
}
}
----
======
@@ -1,41 +1,20 @@
[[expressions-ref-variables]]
= Variables
You can reference variables in an expression by using the `#variableName` syntax. Variables
are set by using the `setVariable()` method in `EvaluationContext` implementations.
You can reference variables in the expression by using the `#variableName` syntax. Variables
are set by using the `setVariable` method on `EvaluationContext` implementations.
[NOTE]
====
Variable names must be begin with a letter (as defined below), an underscore, or a dollar
sign.
Variable names must be composed of one or more of the following supported types of
Valid variable names must be composed of one or more of the following supported
characters.
* letter: any character for which `java.lang.Character.isLetter(char)` returns `true`
- This includes letters such as `A` to `Z`, `a` to `z`, `ü`, `ñ`, and `é` as well as
letters from other character sets such as Chinese, Japanese, Cyrillic, etc.
* digit: `0` to `9`
* letters: `A` to `Z` and `a` to `z`
* digits: `0` to `9`
* underscore: `_`
* dollar sign: `$`
====
[TIP]
====
When setting a variable or root context object in the `EvaluationContext`, it is advised
that the type of the variable or root context object be `public`.
Otherwise, certain types of SpEL expressions involving a variable or root context object
with a non-public type may fail to evaluate or compile.
====
[WARNING]
====
Since variables share a common namespace with
xref:core/expressions/language-ref/functions.adoc[functions] in the evaluation context,
care must be taken to ensure that variable names and functions names do not overlap.
====
The following example shows how to use variables.
[tabs]
@@ -50,7 +29,7 @@ Java::
context.setVariable("newName", "Mike Tesla");
parser.parseExpression("name = #newName").getValue(context, tesla);
System.out.println(tesla.getName()); // "Mike Tesla"
System.out.println(tesla.getName()) // "Mike Tesla"
----
Kotlin::
@@ -74,10 +53,8 @@ Kotlin::
The `#this` variable is always defined and refers to the current evaluation object
(against which unqualified references are resolved). The `#root` variable is always
defined and refers to the root context object. Although `#this` may vary as components of
an expression are evaluated, `#root` always refers to the root.
The following example shows how to use the `#this` variable in conjunction with
xref:core/expressions/language-ref/collection-selection.adoc[collection selection].
an expression are evaluated, `#root` always refers to the root. The following examples
show how to use the `#this` and `#root` variables:
[tabs]
======
@@ -85,95 +62,40 @@ Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
// Create a list of prime integers.
List<Integer> primes = List.of(2, 3, 5, 7, 11, 13, 17);
// create an array of integers
List<Integer> primes = new ArrayList<>();
primes.addAll(Arrays.asList(2,3,5,7,11,13,17));
// Create parser and set variable 'primes' as the list of integers.
// create parser and set variable 'primes' as the array of integers
ExpressionParser parser = new SpelExpressionParser();
EvaluationContext context = SimpleEvaluationContext.forReadWriteDataBinding().build();
EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataAccess();
context.setVariable("primes", primes);
// Select all prime numbers > 10 from the list (using selection ?{...}).
String expression = "#primes.?[#this > 10]";
// Evaluates to a list containing [11, 13, 17].
List<Integer> primesGreaterThanTen =
parser.parseExpression(expression).getValue(context, List.class);
// all prime numbers > 10 from the list (using selection ?{...})
// evaluates to [11, 13, 17]
List<Integer> primesGreaterThanTen = (List<Integer>) parser.parseExpression(
"#primes.?[#this>10]").getValue(context);
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
// Create a list of prime integers.
val primes = listOf(2, 3, 5, 7, 11, 13, 17)
// create an array of integers
val primes = ArrayList<Int>()
primes.addAll(listOf(2, 3, 5, 7, 11, 13, 17))
// Create parser and set variable 'primes' as the list of integers.
// create parser and set variable 'primes' as the array of integers
val parser = SpelExpressionParser()
val context = SimpleEvaluationContext.forReadWriteDataBinding().build()
val context = SimpleEvaluationContext.forReadOnlyDataAccess()
context.setVariable("primes", primes)
// Select all prime numbers > 10 from the list (using selection ?{...}).
val expression = "#primes.?[#this > 10]"
// Evaluates to a list containing [11, 13, 17].
val primesGreaterThanTen = parser.parseExpression(expression)
.getValue(context) as List<Int>
// all prime numbers > 10 from the list (using selection ?{...})
// evaluates to [11, 13, 17]
val primesGreaterThanTen = parser.parseExpression(
"#primes.?[#this>10]").getValue(context) as List<Int>
----
======
The following example shows how to use the `#this` and `#root` variables together in
conjunction with
xref:core/expressions/language-ref/collection-projection.adoc[collection projection].
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
// Create parser and evaluation context.
ExpressionParser parser = new SpelExpressionParser();
EvaluationContext context = SimpleEvaluationContext.forReadWriteDataBinding().build();
// Create an inventor to use as the root context object.
Inventor tesla = new Inventor("Nikola Tesla");
tesla.setInventions("Telephone repeater", "Tesla coil transformer");
// Iterate over all inventions of the Inventor referenced as the #root
// object, and generate a list of strings whose contents take the form
// "<inventor's name> invented the <invention>." (using projection !{...}).
String expression = "#root.inventions.![#root.name + ' invented the ' + #this + '.']";
// Evaluates to a list containing:
// "Nikola Tesla invented the Telephone repeater."
// "Nikola Tesla invented the Tesla coil transformer."
List<String> results = parser.parseExpression(expression)
.getValue(context, tesla, List.class);
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
// Create parser and evaluation context.
val parser = SpelExpressionParser()
val context = SimpleEvaluationContext.forReadWriteDataBinding().build()
// Create an inventor to use as the root context object.
val tesla = Inventor("Nikola Tesla")
tesla.setInventions("Telephone repeater", "Tesla coil transformer")
// Iterate over all inventions of the Inventor referenced as the #root
// object, and generate a list of strings whose contents take the form
// "<inventor's name> invented the <invention>." (using projection !{...}).
val expression = "#root.inventions.![#root.name + ' invented the ' + #this + '.']"
// Evaluates to a list containing:
// "Nikola Tesla invented the Telephone repeater."
// "Nikola Tesla invented the Tesla coil transformer."
val results = parser.parseExpression(expression)
.getValue(context, tesla, List::class.java)
----
======
@@ -5,14 +5,14 @@ Although Java does not let you express null-safety with its type system, the Spr
provides the following annotations in the `org.springframework.lang` package to let you
declare nullability of APIs and fields:
* {spring-framework-api}/lang/Nullable.html[`@Nullable`]: Annotation to indicate that a
* {api-spring-framework}/lang/Nullable.html[`@Nullable`]: Annotation to indicate that a
specific parameter, return value, or field can be `null`.
* {spring-framework-api}/lang/NonNull.html[`@NonNull`]: Annotation to indicate that a specific
* {api-spring-framework}/lang/NonNull.html[`@NonNull`]: Annotation to indicate that a specific
parameter, return value, or field cannot be `null` (not needed on parameters, return values,
and fields where `@NonNullApi` and `@NonNullFields` apply, respectively).
* {spring-framework-api}/lang/NonNullApi.html[`@NonNullApi`]: Annotation at the package level
* {api-spring-framework}/lang/NonNullApi.html[`@NonNullApi`]: Annotation at the package level
that declares non-null as the default semantics for parameters and return values.
* {spring-framework-api}/lang/NonNullFields.html[`@NonNullFields`]: Annotation at the package
* {api-spring-framework}/lang/NonNullFields.html[`@NonNullFields`]: Annotation at the package
level that declares non-null as the default semantics for fields.
The Spring Framework itself leverages these annotations, but they can also be used in any
@@ -37,7 +37,7 @@ these annotations can be used by an IDE (such as IDEA or Eclipse) to provide use
warnings related to null-safety in order to avoid `NullPointerException` at runtime.
They are also used to make Spring APIs null-safe in Kotlin projects, since Kotlin natively
supports {kotlin-docs}/null-safety.html[null-safety]. More details
supports https://kotlinlang.org/docs/null-safety.html[null-safety]. More details
are available in the xref:languages/kotlin/null-safety.adoc[Kotlin support documentation].
@@ -46,7 +46,7 @@ are available in the xref:languages/kotlin/null-safety.adoc[Kotlin support docum
[[jsr-305-meta-annotations]]
== JSR-305 meta-annotations
Spring annotations are meta-annotated with {JSR}305[JSR 305]
Spring annotations are meta-annotated with https://jcp.org/en/jsr/detail?id=305[JSR 305]
annotations (a dormant but widespread JSR). JSR-305 meta-annotations let tooling vendors
like IDEA or Kotlin provide null-safety support in a generic way, without having to
hard-code support for Spring annotations.
@@ -37,7 +37,7 @@ such as a method to check for the existence of the resource being pointed to.
Spring's `Resource` interface located in the `org.springframework.core.io.` package is
meant to be a more capable interface for abstracting access to low-level resources. The
following listing provides an overview of the `Resource` interface. See the
{spring-framework-api}/core/io/Resource.html[`Resource`] javadoc for further details.
{api-spring-framework}/core/io/Resource.html[`Resource`] javadoc for further details.
[source,java,indent=0,subs="verbatim,quotes"]
@@ -104,7 +104,7 @@ resource (if the underlying implementation is compatible and supports that
functionality).
Some implementations of the `Resource` interface also implement the extended
{spring-framework-api}/core/io/WritableResource.html[`WritableResource`] interface
{api-spring-framework}/core/io/WritableResource.html[`WritableResource`] interface
for a resource that supports writing to it.
Spring itself uses the `Resource` abstraction extensively, as an argument type in
@@ -143,7 +143,7 @@ Spring includes several built-in `Resource` implementations:
For a complete list of `Resource` implementations available in Spring, consult the
"All Known Implementing Classes" section of the
{spring-framework-api}/core/io/Resource.html[`Resource`] javadoc.
{api-spring-framework}/core/io/Resource.html[`Resource`] javadoc.
@@ -763,7 +763,7 @@ Kotlin::
----
======
See the {spring-framework-api}/context/support/ClassPathXmlApplicationContext.html[`ClassPathXmlApplicationContext`]
See the {api-spring-framework}/context/support/ClassPathXmlApplicationContext.html[`ClassPathXmlApplicationContext`]
javadoc for details on the various constructors.
@@ -903,7 +903,7 @@ entries in the classpath. When you build JARs with Ant, do not activate the `fil
switch of the JAR task. Also, classpath directories may not get exposed based on security
policies in some environments -- for example, stand-alone applications on JDK 1.7.0_45
and higher (which requires 'Trusted-Library' to be set up in your manifests. See
{stackoverflow-questions}/19394570/java-jre-7u45-breaks-classloader-getresources).
https://stackoverflow.com/questions/19394570/java-jre-7u45-breaks-classloader-getresources).
On JDK 9's module path (Jigsaw), Spring's classpath scanning generally works as expected.
Putting resources into a dedicated directory is highly recommendable here as well,
@@ -9,7 +9,7 @@ known as _JUL_ or `java.util.logging`) if neither Log4j 2.x nor SLF4J is availab
Put Log4j 2.x or Logback (or another SLF4J provider) in your classpath, without any extra
bridges, and let the framework auto-adapt to your choice. For further information see the
{spring-boot-docs}/features.html#features.logging[Spring
https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-logging[Spring
Boot Logging Reference Documentation].
[NOTE]
@@ -1,57 +1,12 @@
[[beans-binding]]
= Data Binding
Data binding is useful for binding user input to a target object where user input is a map
with property paths as keys, following xref:beans-beans-conventions[JavaBeans conventions].
`DataBinder` is the main class that supports this, and it provides two ways to bind user
input:
- xref:beans-constructor-binding[Constructor binding] - bind user input to a public data
constructor, looking up constructor argument values in the user input.
- xref:beans-beans[Property binding] - bind user input to setters, matching keys from the
user input to properties of the target object structure.
You can apply both constructor and property binding or only one.
[[beans-constructor-binding]]
== Constructor Binding
To use constructor binding:
1. Create a `DataBinder` with `null` as the target object.
2. Set `targetType` to the target class.
3. Call `construct`.
The target class should have a single public constructor or a single non-public constructor
with arguments. If there are multiple constructors, then a default constructor if present
is used.
By default, constructor parameter names are used to look up argument values, but you can
configure a `NameResolver`. Spring MVC and WebFlux both rely to allow customizing the name
of the value to bind through an `@BindParam` annotation on constructor parameters.
xref:beans-beans-conventions[Type conversion] is applied as needed to convert user input.
If the constructor parameter is an object, it is constructed recursively in the same
manner, but through a nested property path. That means constructor binding creates both
the target object and any objects it contains.
Binding and conversion errors are reflected in the `BindingResult` of the `DataBinder`.
If the target is created successfully, then `target` is set to the created instance
after the call to `construct`.
[[beans-beans]]
== Property Binding with `BeanWrapper`
= Bean Manipulation and the `BeanWrapper`
The `org.springframework.beans` package adheres to the JavaBeans standard.
A JavaBean is a class with a default no-argument constructor and that follows
a naming convention where (for example) a property named `bingoMadness` would
have a setter method `setBingoMadness(..)` and a getter method `getBingoMadness()`. For
more information about JavaBeans and the specification, see
{java-api}/java.desktop/java/beans/package-summary.html[javabeans].
https://docs.oracle.com/javase/8/docs/api/java/beans/package-summary.html[javabeans].
One quite important class in the beans package is the `BeanWrapper` interface and its
corresponding implementation (`BeanWrapperImpl`). As quoted from the javadoc, the
@@ -71,7 +26,7 @@ perform actions on that bean, such as setting and retrieving properties.
[[beans-beans-conventions]]
=== Setting and Getting Basic and Nested Properties
== Setting and Getting Basic and Nested Properties
Setting and getting properties is done through the `setPropertyValue` and
`getPropertyValue` overloaded method variants of `BeanWrapper`. See their Javadoc for
@@ -237,7 +192,7 @@ Kotlin::
[[beans-beans-conversion]]
== ``PropertyEditor``'s
== Built-in `PropertyEditor` Implementations
Spring uses the concept of a `PropertyEditor` to effect the conversion between an
`Object` and a `String`. It can be handy
@@ -249,7 +204,7 @@ behavior can be achieved by registering custom editors of type
`java.beans.PropertyEditor`. Registering custom editors on a `BeanWrapper` or,
alternatively, in a specific IoC container (as mentioned in the previous chapter), gives it
the knowledge of how to convert properties to the desired type. For more about
`PropertyEditor`, see {java-api}/java.desktop/java/beans/package-summary.html[the javadoc of the `java.beans` package from Oracle].
`PropertyEditor`, see https://docs.oracle.com/javase/8/docs/api/java/beans/package-summary.html[the javadoc of the `java.beans` package from Oracle].
A couple of examples where property editing is used in Spring:
@@ -355,7 +310,7 @@ com
Note that you can also use the standard `BeanInfo` JavaBeans mechanism here as well
(described to some extent
{java-tutorial}/javabeans/advanced/customization.html[here]). The
https://docs.oracle.com/javase/tutorial/javabeans/advanced/customization.html[here]). The
following example uses the `BeanInfo` mechanism to explicitly register one or more
`PropertyEditor` instances with the properties of an associated class:
@@ -423,7 +378,7 @@ Kotlin::
[[beans-beans-conversion-customeditor-registration]]
=== Custom ``PropertyEditor``'s
=== Registering Additional Custom `PropertyEditor` Implementations
When setting bean properties as string values, a Spring IoC container ultimately uses
standard JavaBeans `PropertyEditor` implementations to convert these strings to the complex type of the
@@ -566,7 +521,7 @@ Finally, the following example shows how to use `CustomEditorConfigurer` to regi
----
[[beans-beans-conversion-customeditor-registration-per]]
=== `PropertyEditorRegistrar`
==== Using `PropertyEditorRegistrar`
Another mechanism for registering property editors with the Spring container is to
create and use a `PropertyEditorRegistrar`. This interface is particularly useful when
@@ -2,7 +2,7 @@
= Java Bean Validation
The Spring Framework provides support for the
{bean-validation-site}[Java Bean Validation] API.
https://beanvalidation.org/[Java Bean Validation] API.
@@ -72,7 +72,7 @@ Kotlin::
======
A Bean Validation validator then validates instances of this class based on the declared
constraints. See {bean-validation-site}[Bean Validation] for general information about
constraints. See https://beanvalidation.org/[Bean Validation] for general information about
the API. See the https://hibernate.org/validator/[Hibernate Validator] documentation for
specific constraints. To learn how to set up a bean validation provider as a Spring
bean, keep reading.
@@ -123,12 +123,15 @@ Validator, is expected to be present in the classpath and is automatically detec
[[validation-beanvalidation-spring-inject]]
=== Inject Jakarta Validator
=== Injecting a Validator
`LocalValidatorFactoryBean` implements both `jakarta.validation.ValidatorFactory` and
`jakarta.validation.Validator`, so you can inject a reference to the latter to
apply validation logic if you prefer to work with the Bean Validation API directly,
as the following example shows:
`jakarta.validation.Validator`, as well as Spring's `org.springframework.validation.Validator`.
You can inject a reference to either of these interfaces into beans that need to invoke
validation logic.
You can inject a reference to `jakarta.validation.Validator` if you prefer to work with the Bean
Validation API directly, as the following example shows:
[tabs]
======
@@ -157,15 +160,8 @@ Kotlin::
----
======
[[validation-beanvalidation-spring-inject-adapter]]
=== Inject Spring Validator
In addition to implementing `jakarta.validation.Validator`, `LocalValidatorFactoryBean`
also adapts to `org.springframework.validation.Validator`, so you can inject a reference
to the latter if your bean requires the Spring Validation API.
For example:
You can inject a reference to `org.springframework.validation.Validator` if your bean
requires the Spring Validation API, as the following example shows:
[tabs]
======
@@ -194,15 +190,9 @@ Kotlin::
----
======
When used as `org.springframework.validation.Validator`, `LocalValidatorFactoryBean`
invokes the underlying `jakarta.validation.Validator`, and then adapts
``ContraintViolation``s to ``FieldError``s, and registers them with the `Errors` object
passed into the `validate` method.
[[validation-beanvalidation-spring-constraints]]
=== Configure Custom Constraints
=== Configuring Custom Constraints
Each bean validation constraint consists of two parts:
@@ -282,10 +272,11 @@ As the preceding example shows, a `ConstraintValidator` implementation can have
[[validation-beanvalidation-spring-method]]
== Spring-driven Method Validation
=== Spring-driven Method Validation
You can integrate the method validation feature of Bean Validation into a
Spring context through a `MethodValidationPostProcessor` bean definition:
You can integrate the method validation feature supported by Bean Validation 1.1 (and, as
a custom extension, also by Hibernate Validator 4.3) into a Spring context through a
`MethodValidationPostProcessor` bean definition:
[tabs]
======
@@ -299,7 +290,7 @@ Java::
public class AppConfig {
@Bean
public static MethodValidationPostProcessor validationPostProcessor() {
public MethodValidationPostProcessor validationPostProcessor() {
return new MethodValidationPostProcessor();
}
}
@@ -314,11 +305,11 @@ XML::
----
======
To be eligible for Spring-driven method validation, target classes need to be annotated
To be eligible for Spring-driven method validation, all target classes need to be annotated
with Spring's `@Validated` annotation, which can optionally also declare the validation
groups to use. See
{spring-framework-api}/validation/beanvalidation/MethodValidationPostProcessor.html[`MethodValidationPostProcessor`]
for setup details with the Hibernate Validator and Bean Validation providers.
{api-spring-framework}/validation/beanvalidation/MethodValidationPostProcessor.html[`MethodValidationPostProcessor`]
for setup details with the Hibernate Validator and Bean Validation 1.1 providers.
[TIP]
====
@@ -329,142 +320,8 @@ xref:core/aop/proxying.adoc#aop-understanding-aop-proxies[Understanding AOP Prox
to always use methods and accessors on proxied classes; direct field access will not work.
====
Spring MVC and WebFlux have built-in support for the same underlying method validation but without
the need for AOP. Therefore, do check the rest of this section, and also see the Spring MVC
xref:web/webmvc/mvc-controller/ann-validation.adoc[Validation] and
xref:web/webmvc/mvc-ann-rest-exceptions.adoc[Error Responses] sections, and the WebFlux
xref:web/webflux/controller/ann-validation.adoc[Validation] and
xref:web/webflux/ann-rest-exceptions.adoc[Error Responses] sections.
[[validation-beanvalidation-spring-method-exceptions]]
=== Method Validation Exceptions
By default, `jakarta.validation.ConstraintViolationException` is raised with the set of
``ConstraintViolation``s returned by `jakarta.validation.Validator`. As an alternative,
you can have `MethodValidationException` raised instead with ``ConstraintViolation``s
adapted to `MessageSourceResolvable` errors. To enable set the following flag:
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
import org.springframework.validation.beanvalidation.MethodValidationPostProcessor;
@Configuration
public class AppConfig {
@Bean
public static MethodValidationPostProcessor validationPostProcessor() {
MethodValidationPostProcessor processor = new MethodValidationPostProcessor();
processor.setAdaptConstraintViolations(true);
return processor;
}
}
----
XML::
+
[source,xml,indent=0,subs="verbatim,quotes",role="secondary"]
----
<bean class="org.springframework.validation.beanvalidation.MethodValidationPostProcessor">
<property name="adaptConstraintViolations" value="true"/>
</bean>
----
======
`MethodValidationException` contains a list of ``ParameterValidationResult``s which
group errors by method parameter, and each exposes a `MethodParameter`, the argument
value, and a list of `MessageSourceResolvable` errors adapted from
``ConstraintViolation``s. For `@Valid` method parameters with cascaded violations on
fields and properties, the `ParameterValidationResult` is `ParameterErrors` which
implements `org.springframework.validation.Errors` and exposes validation errors as
``FieldError``s.
[[validation-beanvalidation-spring-method-i18n]]
=== Customizing Validation Errors
The adapted `MessageSourceResolvable` errors can be turned into error messages to
display to users through the configured `MessageSource` with locale and language specific
resource bundles. This section provides an example for illustration.
Given the following class declarations:
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
record Person(@Size(min = 1, max = 10) String name) {
}
@Validated
public class MyService {
void addStudent(@Valid Person person, @Max(2) int degrees) {
// ...
}
}
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
@JvmRecord
internal data class Person(@Size(min = 1, max = 10) val name: String)
@Validated
class MyService {
fun addStudent(person: @Valid Person?, degrees: @Max(2) Int) {
// ...
}
}
----
======
A `ConstraintViolation` on `Person.name()` is adapted to a `FieldError` with the following:
- Error codes `"Size.person.name"`, `"Size.name"`, `"Size.java.lang.String"`, and `"Size"`
- Message arguments `"name"`, `10`, and `1` (the field name and the constraint attributes)
- Default message "size must be between 1 and 10"
To customize the default message, you can add properties to
xref:core/beans/context-introduction.adoc#context-functionality-messagesource[MessageSource]
resource bundles using any of the above errors codes and message arguments. Note also that the
message argument `"name"` is itself a `MessagreSourceResolvable` with error codes
`"person.name"` and `"name"` and can customized too. For example:
Properties::
+
[source,properties,indent=0,subs="verbatim,quotes",role="secondary"]
----
Size.person.name=Please, provide a {0} that is between {2} and {1} characters long
person.name=username
----
A `ConstraintViolation` on the `degrees` method parameter is adapted to a
`MessageSourceResolvable` with the following:
- Error codes `"Max.myService#addStudent.degrees"`, `"Max.degrees"`, `"Max.int"`, `"Max"`
- Message arguments "degrees2 and 2 (the field name and the constraint attribute)
- Default message "must be less than or equal to 2"
To customize the above default message, you can add a property such as:
Properties::
+
[source,properties,indent=0,subs="verbatim,quotes",role="secondary"]
----
Max.degrees=You cannot provide more than {1} {0}
----
[[validation-beanvalidation-spring-other]]
=== Additional Configuration Options
@@ -472,7 +329,7 @@ Max.degrees=You cannot provide more than {1} {0}
The default `LocalValidatorFactoryBean` configuration suffices for most
cases. There are a number of configuration options for various Bean Validation
constructs, from message interpolation to traversal resolution. See the
{spring-framework-api}/validation/beanvalidation/LocalValidatorFactoryBean.html[`LocalValidatorFactoryBean`]
{api-spring-framework}/validation/beanvalidation/LocalValidatorFactoryBean.html[`LocalValidatorFactoryBean`]
javadoc for more information on these options.
@@ -19,8 +19,8 @@ of the field). This is done as a convenience to aid developers when targeting er
More information on the `MessageCodesResolver` and the default strategy can be found
in the javadoc of
{spring-framework-api}/validation/MessageCodesResolver.html[`MessageCodesResolver`] and
{spring-framework-api}/validation/DefaultMessageCodesResolver.html[`DefaultMessageCodesResolver`],
{api-spring-framework}/validation/MessageCodesResolver.html[`MessageCodesResolver`] and
{api-spring-framework}/validation/DefaultMessageCodesResolver.html[`DefaultMessageCodesResolver`],
respectively.
@@ -139,7 +139,7 @@ Kotlin::
======
The Spring team welcomes community-driven `Formatter` contributions. See
{spring-framework-issues}[GitHub Issues] to contribute.
https://github.com/spring-projects/spring-framework/issues[GitHub Issues] to contribute.
@@ -96,7 +96,7 @@ Kotlin::
The `static` `rejectIfEmpty(..)` method on the `ValidationUtils` class is used to
reject the `name` property if it is `null` or the empty string. Have a look at the
{spring-framework-api}/validation/ValidationUtils.html[`ValidationUtils`] javadoc
{api-spring-framework}/validation/ValidationUtils.html[`ValidationUtils`] javadoc
to see what functionality it provides besides the example shown previously.
While it is certainly possible to implement a single `Validator` class to validate each
@@ -193,14 +193,8 @@ Kotlin::
Validation errors are reported to the `Errors` object passed to the validator. In the case
of Spring Web MVC, you can use the `<spring:bind/>` tag to inspect the error messages, but
you can also inspect the `Errors` object yourself. More information about the
methods it offers can be found in the {spring-framework-api}/validation/Errors.html[javadoc].
Validators may also get locally invoked for the immediate validation of a given object,
not involving a binding process. As of 6.1, this has been simplified through a new
`Validator.validateObject(Object)` method which is available by default now, returning
a simple ´Errors` representation which can be inspected: typically calling `hasErrors()`
or the new `failOnError` method for turning the error summary message into an exception
(e.g. `validator.validateObject(myObject).failOnError(IllegalArgumentException::new)`).
methods it offers can be found in the {api-spring-framework}/validation/Errors.html[javadoc].
@@ -219,14 +219,6 @@ version and consider setting the `spring.jdbc.getParameterType.ignore` property
xref:appendix.adoc#appendix-spring-properties[`SpringProperties`] mechanism)
if you encounter a specific performance issue for your application.
As of 6.1.2, Spring bypasses the default `getParameterType` resolution on PostgreSQL and
MS SQL Server. This is a common optimization to avoid further roundtrips to the DBMS just
for parameter type resolution which is known to make a very significant difference on
PostgreSQL and MS SQL Server specifically, in particular for batch operations. If you
happen to see a side effect e.g. when setting a byte array to null without specific type
indication, you may explicitly set the `spring.jdbc.getParameterType.ignore=false` flag
as a system property (see above) to restore full `getParameterType` resolution.
Alternatively, you could consider specifying the corresponding JDBC types explicitly,
either through a `BatchPreparedStatementSetter` (as shown earlier), through an explicit
type array given to a `List<Object[]>` based call, through `registerSqlType` calls on a
@@ -2,26 +2,30 @@
= Choosing an Approach for JDBC Database Access
You can choose among several approaches to form the basis for your JDBC database access.
In addition to three flavors of `JdbcTemplate`, a `SimpleJdbcInsert` and `SimpleJdbcCall`
approach optimizes database metadata, and the RDBMS Object style results in a more
object-oriented approach. Once you start using one of these approaches, you can still mix
and match to include a feature from a different approach.
In addition to three flavors of `JdbcTemplate`, a new `SimpleJdbcInsert` and
`SimpleJdbcCall` approach optimizes database metadata, and the RDBMS Object style takes a
more object-oriented approach similar to that of JDO Query design. Once you start using
one of these approaches, you can still mix and match to include a feature from a
different approach. All approaches require a JDBC 2.0-compliant driver, and some
advanced features require a JDBC 3.0 driver.
* `JdbcTemplate` is the classic and most popular Spring JDBC approach. This
"`lowest-level`" approach and all others use a `JdbcTemplate` under the covers.
"`lowest-level`" approach and all others use a JdbcTemplate under the covers.
* `NamedParameterJdbcTemplate` wraps a `JdbcTemplate` to provide named parameters
instead of the traditional JDBC `?` placeholders. This approach provides better
documentation and ease of use when you have multiple parameters for an SQL statement.
* `SimpleJdbcInsert` and `SimpleJdbcCall` optimize database metadata to limit the amount
of necessary configuration. This approach simplifies coding so that you only need to
provide the name of the table or procedure and a map of parameters matching the column
names. This works only if the database provides adequate metadata. If the database does
not provide this metadata, you have to provide explicit configuration of the parameters.
of necessary configuration. This approach simplifies coding so that you need to
provide only the name of the table or procedure and provide a map of parameters matching
the column names. This works only if the database provides adequate metadata. If the
database does not provide this metadata, you have to provide explicit
configuration of the parameters.
* RDBMS objects — including `MappingSqlQuery`, `SqlUpdate`, and `StoredProcedure` —
require you to create reusable and thread-safe objects during initialization of your
data-access layer. This approach allows you to define your query string, declare
parameters, and compile the query. Once you do that, `execute(...)`, `update(...)`, and
`findObject(...)` methods can be called multiple times with various parameter values.
data-access layer. This approach is modeled after JDO Query, wherein you define your
query string, declare parameters, and compile the query. Once you do that,
`execute(...)`, `update(...)`, and `findObject(...)` methods can be called multiple
times with various parameter values.
@@ -199,7 +199,7 @@ participating in Spring managed transactions. It is generally preferable to writ
own new code by using the higher level abstractions for resource management, such as
`JdbcTemplate` or `DataSourceUtils`.
See the {spring-framework-api}/jdbc/datasource/TransactionAwareDataSourceProxy.html[`TransactionAwareDataSourceProxy`]
See the {api-spring-framework}/jdbc/datasource/TransactionAwareDataSourceProxy.html[`TransactionAwareDataSourceProxy`]
javadoc for more details.
@@ -230,19 +230,6 @@ provided you stick to the required connection lookup pattern. Note that JTA does
savepoints or custom isolation levels and has a different timeout mechanism but otherwise
exposes similar behavior in terms of JDBC resources and JDBC commit/rollback management.
For JTA-style lazy retrieval of actual resource connections, Spring provides a
corresponding `DataSource` proxy class for the target connection pool: see
{spring-framework-api}/jdbc/datasource/LazyConnectionDataSourceProxy.html[`LazyConnectionDataSourceProxy`].
This is particularly useful for potentially empty transactions without actual statement
execution (never fetching an actual resource in such a scenario), and also in front of
a routing `DataSource` which means to take the transaction-synchronized read-only flag
and/or isolation level into account (e.g. `IsolationLevelDataSourceRouter`).
`LazyConnectionDataSourceProxy` also provides special support for a read-only connection
pool to use during a read-only transaction, avoiding the overhead of switching the JDBC
Connection's read-only flag at the beginning and end of every transaction when fetching
it from the primary connection pool (which may be costly depending on the JDBC driver).
NOTE: As of 5.3, Spring provides an extended `JdbcTransactionManager` variant which adds
exception translation capabilities on commit/rollback (aligned with `JdbcTemplate`).
Where `DataSourceTransactionManager` will only ever throw `TransactionSystemException`
@@ -6,7 +6,6 @@ including error handling. It includes the following topics:
* xref:data-access/jdbc/core.adoc#jdbc-JdbcTemplate[Using `JdbcTemplate`]
* xref:data-access/jdbc/core.adoc#jdbc-NamedParameterJdbcTemplate[Using `NamedParameterJdbcTemplate`]
* xref:data-access/jdbc/core.adoc#jdbc-JdbcClient[Unified JDBC Query/Update Operations: `JdbcClient`]
* xref:data-access/jdbc/core.adoc#jdbc-SQLExceptionTranslator[Using `SQLExceptionTranslator`]
* xref:data-access/jdbc/core.adoc#jdbc-statements-executing[Running Statements]
* xref:data-access/jdbc/core.adoc#jdbc-statements-querying[Running Queries]
@@ -51,7 +50,7 @@ corresponding to the fully qualified class name of the template instance (typica
The following sections provide some examples of `JdbcTemplate` usage. These examples
are not an exhaustive list of all of the functionality exposed by the `JdbcTemplate`.
See the attendant {spring-framework-api}/jdbc/core/JdbcTemplate.html[javadoc] for that.
See the attendant {api-spring-framework}/jdbc/core/JdbcTemplate.html[javadoc] for that.
[[jdbc-JdbcTemplate-examples-query]]
=== Querying (`SELECT`)
@@ -702,120 +701,6 @@ See also xref:data-access/jdbc/core.adoc#jdbc-JdbcTemplate-idioms[`JdbcTemplate`
for guidelines on using the `NamedParameterJdbcTemplate` class in the context of an application.
[[jdbc-JdbcClient]]
== Unified JDBC Query/Update Operations: `JdbcClient`
As of 6.1, the named parameter statements of `NamedParameterJdbcTemplate` and the positional
parameter statements of a regular `JdbcTemplate` are available through a unified client API
with a fluent interaction model.
For example, with positional parameters:
[source,java,indent=0,subs="verbatim,quotes"]
----
private JdbcClient jdbcClient = JdbcClient.create(dataSource);
public int countOfActorsByFirstName(String firstName) {
return this.jdbcClient.sql("select count(*) from t_actor where first_name = ?")
.param(firstName)
.query(Integer.class).single();
}
----
For example, with named parameters:
[source,java,indent=0,subs="verbatim,quotes"]
----
private JdbcClient jdbcClient = JdbcClient.create(dataSource);
public int countOfActorsByFirstName(String firstName) {
return this.jdbcClient.sql("select count(*) from t_actor where first_name = :firstName")
.param("firstName", firstName)
.query(Integer.class).single();
}
----
`RowMapper` capabilities are available as well, with flexible result resolution:
[source,java,indent=0,subs="verbatim,quotes"]
----
List<Actor> actors = this.jdbcClient.sql("select first_name, last_name from t_actor")
.query((rs, rowNum) -> new Actor(rs.getString("first_name"), rs.getString("last_name")))
.list();
----
Instead of a custom `RowMapper`, you may also specify a class to map to.
For example, assuming that `Actor` has `firstName` and `lastName` properties
as a record class, a custom constructor, bean properties, or plain fields:
[source,java,indent=0,subs="verbatim,quotes"]
----
List<Actor> actors = this.jdbcClient.sql("select first_name, last_name from t_actor")
.query(Actor.class)
.list();
----
With a required single object result:
[source,java,indent=0,subs="verbatim,quotes"]
----
Actor actor = this.jdbcClient.sql("select first_name, last_name from t_actor where id = ?")
.param(1212L)
.query(Actor.class)
.single();
----
With a `java.util.Optional` result:
[source,java,indent=0,subs="verbatim,quotes"]
----
Optional<Actor> actor = this.jdbcClient.sql("select first_name, last_name from t_actor where id = ?")
.param(1212L)
.query(Actor.class)
.optional();
----
And for an update statement:
[source,java,indent=0,subs="verbatim,quotes"]
----
this.jdbcClient.sql("insert into t_actor (first_name, last_name) values (?, ?)")
.param("Leonor").param("Watling")
.update();
----
Or an update statement with named parameters:
[source,java,indent=0,subs="verbatim,quotes"]
----
this.jdbcClient.sql("insert into t_actor (first_name, last_name) values (:firstName, :lastName)")
.param("firstName", "Leonor").param("lastName", "Watling")
.update();
----
Instead of individual named parameters, you may also specify a parameter source object
for example, a record class, a class with bean properties, or a plain field holder which
provides `firstName` and `lastName` properties, such as the `Actor` class from above:
[source,java,indent=0,subs="verbatim,quotes"]
----
this.jdbcClient.sql("insert into t_actor (first_name, last_name) values (:firstName, :lastName)")
.paramSource(new Actor("Leonor", "Watling")
.update();
----
The automatic `Actor` class mapping for parameters as well as the query results above is
provided through implicit `SimplePropertySqlParameterSource` and `SimplePropertyRowMapper`
strategies which are also available for direct use. They can serve as a common replacement
for `BeanPropertySqlParameterSource` and `BeanPropertyRowMapper`/`DataClassRowMapper`,
also with `JdbcTemplate` and `NamedParameterJdbcTemplate` themselves.
NOTE: `JdbcClient` is a flexible but simplified facade for JDBC query/update statements.
Advanced capabilities such as batch inserts and stored procedure calls typically require
extra customization: consider Spring's `SimpleJdbcInsert` and `SimpleJdbcCall` classes or
plain direct `JdbcTemplate` usage for any such capabilities not available in `JdbcClient`.
[[jdbc-SQLExceptionTranslator]]
== Using `SQLExceptionTranslator`
@@ -824,7 +709,7 @@ between ``SQLException``s and Spring's own `org.springframework.dao.DataAccessEx
which is agnostic in regard to data access strategy. Implementations can be generic (for
example, using SQLState codes for JDBC) or proprietary (for example, using Oracle error
codes) for greater precision. This exception translation mechanism is used behind the
common `JdbcTemplate` and `JdbcTransactionManager` entry points which do not
the common `JdbcTemplate` and `JdbcTransactionManager` entry points which do not
propagate `SQLException` but rather `DataAccessException`.
NOTE: As of 6.0, the default exception translator is `SQLExceptionSubclassTranslator`,
@@ -83,7 +83,7 @@ Kotlin::
----
======
See the {spring-framework-api}/jdbc/datasource/embedded/EmbeddedDatabaseBuilder.html[javadoc for `EmbeddedDatabaseBuilder`]
See the {api-spring-framework}/jdbc/datasource/embedded/EmbeddedDatabaseBuilder.html[javadoc for `EmbeddedDatabaseBuilder`]
for further details on all supported options.
You can also use the `EmbeddedDatabaseBuilder` to create an embedded database by using Java
@@ -288,7 +288,7 @@ You can extend Spring JDBC embedded database support in two ways:
connection pool to manage embedded database connections.
We encourage you to contribute extensions to the Spring community at
{spring-framework-issues}[GitHub Issues].
https://github.com/spring-projects/spring-framework/issues[GitHub Issues].
@@ -112,7 +112,7 @@ Java::
this.actorMappingQuery = new ActorMappingQuery(dataSource);
}
public Actor getActor(Long id) {
public Customer getCustomer(Long id) {
return actorMappingQuery.findObject(id);
}
----
@@ -123,11 +123,11 @@ Kotlin::
----
private val actorMappingQuery = ActorMappingQuery(dataSource)
fun getActor(id: Long) = actorMappingQuery.findObject(id)
fun getCustomer(id: Long) = actorMappingQuery.findObject(id)
----
======
The method in the preceding example retrieves the actor with the `id` that is passed in as the
The method in the preceding example retrieves the customer with the `id` that is passed in as the
only parameter. Since we want only one object to be returned, we call the `findObject` convenience
method with the `id` as the parameter. If we had instead a query that returned a
list of objects and took additional parameters, we would use one of the `execute`
@@ -20,10 +20,9 @@ xref:data-access/jdbc/connections.adoc[Controlling Database Connections] and xre
* `object`: The `org.springframework.jdbc.object` package contains classes that represent
RDBMS queries, updates, and stored procedures as thread-safe, reusable objects. See
xref:data-access/jdbc/object.adoc[Modeling JDBC Operations as Java Objects]. This style
results in a more object-oriented approach, although objects returned by queries are
naturally disconnected from the database. This higher-level of JDBC abstraction depends
on the lower-level abstraction in the `org.springframework.jdbc.core` package.
xref:data-access/jdbc/object.adoc[Modeling JDBC Operations as Java Objects]. This approach is modeled by JDO, although objects returned by queries
are naturally disconnected from the database. This higher-level of JDBC abstraction
depends on the lower-level abstraction in the `org.springframework.jdbc.core` package.
* `support`: The `org.springframework.jdbc.support` package provides `SQLException`
translation functionality and some utility classes. Exceptions thrown during JDBC processing
@@ -209,26 +209,141 @@ are passed in as a parameter to the stored procedure.
The `SqlReturnType` interface has a single method (named `getTypeValue`) that must be
implemented. This interface is used as part of the declaration of an `SqlOutParameter`.
The following example shows returning the value of a `java.sql.Struct` object of the user
The following example shows returning the value of an Oracle `STRUCT` object of the user
declared type `ITEM_TYPE`:
include-code::./TestItemStoredProcedure[]
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
public class TestItemStoredProcedure extends StoredProcedure {
public TestItemStoredProcedure(DataSource dataSource) {
// ...
declareParameter(new SqlOutParameter("item", OracleTypes.STRUCT, "ITEM_TYPE",
(CallableStatement cs, int colIndx, int sqlType, String typeName) -> {
STRUCT struct = (STRUCT) cs.getObject(colIndx);
Object[] attr = struct.getAttributes();
TestItem item = new TestItem();
item.setId(((Number) attr[0]).longValue());
item.setDescription((String) attr[1]);
item.setExpirationDate((java.util.Date) attr[2]);
return item;
}));
// ...
}
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
class TestItemStoredProcedure(dataSource: DataSource) : StoredProcedure() {
init {
// ...
declareParameter(SqlOutParameter("item", OracleTypes.STRUCT, "ITEM_TYPE") { cs, colIndx, sqlType, typeName ->
val struct = cs.getObject(colIndx) as STRUCT
val attr = struct.getAttributes()
TestItem((attr[0] as Long, attr[1] as String, attr[2] as Date)
})
// ...
}
}
----
======
You can use `SqlTypeValue` to pass the value of a Java object (such as `TestItem`) to a
stored procedure. The `SqlTypeValue` interface has a single method (named
`createTypeValue`) that you must implement. The active connection is passed in, and you
can use it to create database-specific objects, such as `java.sql.Struct` instances
or `java.sql.Array` instances. The following example creates a `java.sql.Struct` instance:
can use it to create database-specific objects, such as `StructDescriptor` instances
or `ArrayDescriptor` instances. The following example creates a `StructDescriptor` instance:
include-code::./SqlTypeValueFactory[tag=struct,indent=0]
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
final TestItem testItem = new TestItem(123L, "A test item",
new SimpleDateFormat("yyyy-M-d").parse("2010-12-31"));
SqlTypeValue value = new AbstractSqlTypeValue() {
protected Object createTypeValue(Connection conn, int sqlType, String typeName) throws SQLException {
StructDescriptor itemDescriptor = new StructDescriptor(typeName, conn);
Struct item = new STRUCT(itemDescriptor, conn,
new Object[] {
testItem.getId(),
testItem.getDescription(),
new java.sql.Date(testItem.getExpirationDate().getTime())
});
return item;
}
};
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
val (id, description, expirationDate) = TestItem(123L, "A test item",
SimpleDateFormat("yyyy-M-d").parse("2010-12-31"))
val value = object : AbstractSqlTypeValue() {
override fun createTypeValue(conn: Connection, sqlType: Int, typeName: String?): Any {
val itemDescriptor = StructDescriptor(typeName, conn)
return STRUCT(itemDescriptor, conn,
arrayOf(id, description, java.sql.Date(expirationDate.time)))
}
}
----
======
You can now add this `SqlTypeValue` to the `Map` that contains the input parameters for the
`execute` call of the stored procedure.
Another use for the `SqlTypeValue` is passing in an array of values to an Oracle stored
procedure. Oracle has an `createOracleArray` method on `OracleConnection` that you can
access by unwrapping it. You can use the `SqlTypeValue` to create an array and populate
it with values from the Java `java.sql.Array`, as the following example shows:
procedure. Oracle has its own internal `ARRAY` class that must be used in this case, and
you can use the `SqlTypeValue` to create an instance of the Oracle `ARRAY` and populate
it with values from the Java `ARRAY`, as the following example shows:
[tabs]
======
Java::
+
[source,java,indent=0,subs="verbatim,quotes",role="primary"]
----
final Long[] ids = new Long[] {1L, 2L};
SqlTypeValue value = new AbstractSqlTypeValue() {
protected Object createTypeValue(Connection conn, int sqlType, String typeName) throws SQLException {
ArrayDescriptor arrayDescriptor = new ArrayDescriptor(typeName, conn);
ARRAY idArray = new ARRAY(arrayDescriptor, conn, ids);
return idArray;
}
};
----
Kotlin::
+
[source,kotlin,indent=0,subs="verbatim,quotes",role="secondary"]
----
class TestItemStoredProcedure(dataSource: DataSource) : StoredProcedure() {
init {
val ids = arrayOf(1L, 2L)
val value = object : AbstractSqlTypeValue() {
override fun createTypeValue(conn: Connection, sqlType: Int, typeName: String?): Any {
val arrayDescriptor = ArrayDescriptor(typeName, conn)
return ARRAY(arrayDescriptor, conn, ids)
}
}
}
}
----
======
include-code::./SqlTypeValueFactory[tag=oracle-array,indent=0]
@@ -323,12 +323,12 @@ use these alternative input classes.
The `SimpleJdbcCall` class uses metadata in the database to look up names of `in`
and `out` parameters so that you do not have to explicitly declare them. You can
declare parameters if you prefer to do that or if you have parameters that do not
have an automatic mapping to a Java class. The first example shows a simple procedure
that returns only scalar values in `VARCHAR` and `DATE` format from a MySQL database.
The example procedure reads a specified actor entry and returns `first_name`,
`last_name`, and `birth_date` columns in the form of `out` parameters. The following
listing shows the first example:
declare parameters if you prefer to do that or if you have parameters (such as `ARRAY`
or `STRUCT`) that do not have an automatic mapping to a Java class. The first example
shows a simple procedure that returns only scalar values in `VARCHAR` and `DATE` format
from a MySQL database. The example procedure reads a specified actor entry and returns
`first_name`, `last_name`, and `birth_date` columns in the form of `out` parameters.
The following listing shows the first example:
[source,sql,indent=0,subs="verbatim,quotes"]
----
@@ -407,12 +407,6 @@ exposes the Hibernate transaction as a JDBC transaction if you have set up the p
`DataSource` for which the transactions are supposed to be exposed through the
`dataSource` property of the `HibernateTransactionManager` class.
For JTA-style lazy retrieval of actual resource connections, Spring provides a
corresponding `DataSource` proxy class for the target connection pool: see
{spring-framework-api}/jdbc/datasource/LazyConnectionDataSourceProxy.html[`LazyConnectionDataSourceProxy`].
This is particularly useful for Hibernate read-only transactions which can often
be processed from a local cache rather than hitting the database.
[[orm-hibernate-resources]]
== Comparing Container-managed and Locally Defined Resources
@@ -58,8 +58,8 @@ The benefits of using the Spring Framework to create your ORM DAOs include:
TIP: For more comprehensive ORM support, including support for alternative database
technologies such as MongoDB, you might want to check out the
{spring-site-projects}/spring-data/[Spring Data] suite of projects. If you are
a JPA user, the {spring-site-guides}/gs/accessing-data-jpa/[Getting Started Accessing
https://projects.spring.io/spring-data/[Spring Data] suite of projects. If you are
a JPA user, the https://spring.io/guides/gs/accessing-data-jpa/[Getting Started Accessing
Data with JPA] guide from https://spring.io provides a great introduction.
@@ -157,7 +157,7 @@ The `LoadTimeWeaver` interface is a Spring-provided class that lets JPA
`ClassTransformer` instances be plugged in a specific manner, depending on whether the
environment is a web container or application server. Hooking `ClassTransformers`
through an
{java-api}/java.instrument/java/lang/instrument/package-summary.html[agent]
https://docs.oracle.com/javase/6/docs/api/java/lang/instrument/package-summary.html[agent]
is typically not efficient. The agents work against the entire virtual machine and
inspect every class that is loaded, which is usually undesirable in a production
server environment.
@@ -506,20 +506,13 @@ if you have not already done so, to get more detailed coverage of Spring's decla
The recommended strategy for JPA is local transactions through JPA's native transaction
support. Spring's `JpaTransactionManager` provides many capabilities known from local
JDBC transactions (such as transaction-specific isolation levels and resource-level
read-only optimizations) against any regular JDBC connection pool, without requiring
a JTA transaction coordinator and XA-capable resources.
read-only optimizations) against any regular JDBC connection pool (no XA requirement).
Spring JPA also lets a configured `JpaTransactionManager` expose a JPA transaction
to JDBC access code that accesses the same `DataSource`, provided that the registered
`JpaDialect` supports retrieval of the underlying JDBC `Connection`. Spring provides
dialects for the EclipseLink and Hibernate JPA implementations. See the
xref:data-access/orm/jpa.adoc#orm-jpa-dialect[next section] for details on `JpaDialect`.
For JTA-style lazy retrieval of actual resource connections, Spring provides a
corresponding `DataSource` proxy class for the target connection pool: see
{spring-framework-api}/jdbc/datasource/LazyConnectionDataSourceProxy.html[`LazyConnectionDataSourceProxy`].
This is particularly useful for JPA read-only transactions which can often
be processed from a local cache rather than hitting the database.
`JpaDialect` supports retrieval of the underlying JDBC `Connection`.
Spring provides dialects for the EclipseLink and Hibernate JPA implementations.
See the xref:data-access/orm/jpa.adoc#orm-jpa-dialect[next section] for details on the `JpaDialect` mechanism.
[[orm-jpa-dialect]]
@@ -548,8 +541,8 @@ way of auto-configuring an `EntityManagerFactory` setup for Hibernate or Eclipse
respectively. Note that those provider adapters are primarily designed for use with
Spring-driven transaction management (that is, for use with `JpaTransactionManager`).
See the {spring-framework-api}/orm/jpa/JpaDialect.html[`JpaDialect`] and
{spring-framework-api}/orm/jpa/JpaVendorAdapter.html[`JpaVendorAdapter`] javadoc for
See the {api-spring-framework}/orm/jpa/JpaDialect.html[`JpaDialect`] and
{api-spring-framework}/orm/jpa/JpaVendorAdapter.html[`JpaVendorAdapter`] javadoc for
more details of its operations and how they are used within Spring's JPA support.

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