This commit fixes a potential NPE when determining the priority of a
bean instance in case multiple candidates exist and no bean was marked
as @Primary
Issue: SPR-12024
Commit 5fe8f52 introduced a support for @Priority as an alternative to
@Primary but it broke the semantic of the priority value. This commit
fixes this inconsistency.
As for @Order, the lowest value means the highest priority so if
several beans are candidates for injection, the one having the lowest
value will be used.
Issue: SPR-10548
This commit adds a nested path support for DirectFieldAccessor that is
similar to what BeanWrapper provides. It is now possible to use
expressions such as "person.address.city.name" to access the name of
the city that a given person lives in using fields to traverse the
graph.
DirectFieldAccessor also now supports an auto-grow option to create
a default instance for a "null" intermediate path. This option is
false by default and leads to a NullValueInNestedPathException in such
a case.
This commit also harmonizes part of the tests suite so that core tests
are shared between BeanWrapperImpl and DirectFieldAccessor.
Note that map and list access is not implemented as part of this
commit.
Issue: SPR-9705
Includes support for arbitrary deep nesting levels in DependencyDescriptor's getDependencyType() and MethodParameter's getNestedParameterType().
Issue: SPR-11833
This commit introduces OrderProvider and OrderProviderComparator, two
interfaces designed to externalize how a collection of element is sorted
according to their order value.
FactoryAwareOrderProvider is an OrderProvider implementation that knows
about the objects to order and the corresponding BeanFactory instance.
This allows to retrieve additional metadata about the actual instances
to sort, such as its factory method.
A @Bean method can now holds an additional @Order to define the order
value that this bean should have when injected as part of a collection
or array.
Issue: SPR-11310
This commit migrates the YAML support available in Spring Boot to
the core framework. YAML documents can be loaded either as a
properties object or as a map.
Issue: SPR-9897
This commit adds support for @Priority to filter multiple candidates
for autowiring. When multiple candidates are available for a given
bean, the bean annotated with @Primary is used. If none exists, the
one with the higher value for the @Priority annotation is used. If
two beans have the same priority a NoUniqueBeanDefinitionException
is thrown, just as if two beans are annotated with @Primary.
The underlying code for #getBean and #resolveDependency has been
merged as this feature is available for both dependency injection
and bean lookup by type.
Issue: SPR-10548
Added tests checking the behaviour of autowiring by type when the @Primary
annotation is present on the class. Fixed also some inconsistencies in the
code.
Prior to this commit, the inclusion of the 'overloaded' flag in the
implementations of equals() and hashCode() in MethodOverride could lead
to adverse effects in the outcome of equals() in AbstractBeanDefinition.
For example, given two bean definitions A and B that represent the
exact same bean definition metadata for a bean that relies on method
injection, if A has been validated and B has not, then A.equals(B) will
potentially return false, which is not acceptable behavior.
This commit addresses this issue by removing the 'overloaded' flag from
the implementations of equals() and hashCode() for MethodOverride.
Issue: SPR-11420
Specifically, read and write methods are allowed to express property types with superclass/subclass relationships in both directions now.
Issue: SPR-11139
Fix remaining Java compiler warnings, mainly around missing
generics or deprecated code.
Also add the `-Werror` compiler option to ensure that any future
warnings will fail the build.
Issue: SPR-11064
XML-defined arguments values are initially turned into TypedStringValue wrappers. If we encounter an unresolved argument, we need to unwrap such a TypedStringValue and then try to treat its content as a class name.
Issue: SPR-11034
Also optimized getTypeForFactoryMethod's implementation for non-generic factory methods, and reduced calls to getResolvedFactoryMethod in order to avoid repeated synchronization.
Issue: SPR-11034
DefaultListableBeanFactory performs a fallback check for autowire candidates now, which GenericTypeAwareAutowireCandidateResolver implements to accept raw type matches if the target class has unresolvable type variables. Full generic matches are still preferred; the BeanFactory will only start looking for fallback matches if the first pass led to an empty result.
Issue: SPR-10993
Issue: SPR-11004
Update TypeConverterDelegate to bypass conversion when the target type
is Object.class. Prior to this commit converting a single element array
to an Object would result in the element being returned, rather than
the array itself.
Issue: SPR-10996
Juergen Hoeller