Release v5.3.0

2026-06-08 17:33:33 +00:00 · 2020-10-27 14:44:42 +00:00
1164 changed files with 13737 additions and 32426 deletions
@@ -1,5 +1,5 @@
 <!--
-!!! For Security Vulnerabilities, please go to https://spring.io/security-policy !!!
+!!! For Security Vulnerabilities, please go to https://pivotal.io/security !!!
 -->
 **Affects:** \<Spring Framework version>

@@ -14,4 +14,4 @@ Thanks for taking the time to create an issue. Please read the following:
 Issue or Pull Request? Create only one, not both. GitHub treats them as the same.
 If unsure, start with an issue, and if you submit a pull request later, the
 issue will be closed as superseded.
-->
+-->
@@ -41,6 +41,3 @@ out
 test-output
 atlassian-ide-plugin.xml
 .gradletasknamecache
-
-# VS Code
-.vscode/
@@ -72,7 +72,7 @@ to start a discussion first or have already created an issue, once a pull reques
 created, we will close the issue as superseded by the pull request, and the discussion
 about the issue will continue under the pull request.

-1. Always check out the `main` branch and submit pull requests against it
+1. Always check out the `master` branch and submit pull requests against it
 (for target version see [settings.gradle](settings.gradle)).
 Backports to prior versions will be considered on a case-by-case basis and reflected as
 the fix version in the issue tracker.
@@ -125,7 +125,10 @@ The reference documentation is in the [src/docs/asciidoc](src/docs/asciidoc) dir
 edit source files, and submit directly from GitHub.

 When making changes locally, execute `./gradlew asciidoctor` and then browse the result under
-`build/docs/ref-docs/html5/index.html`.
+`build/asciidoc/html5/index.html`.

-Asciidoctor also supports live editing. For more details see
-[AsciiDoc Tooling](https://docs.asciidoctor.org/asciidoctor/latest/tooling/).
+Asciidoctor also supports live editing. For more details read
+[Editing AsciiDoc with Live Preview](https://asciidoctor.org/docs/editing-asciidoc-with-live-preview/).
+Note that if you choose the
+[System Monitor](https://asciidoctor.org/docs/editing-asciidoc-with-live-preview/#using-a-system-monitor)
+option, you can find a Guardfile under `src/docs/asciidoc`.
@@ -1,4 +1,4 @@
-# <img src="src/docs/spring-framework.png" width="80" height="80"> Spring Framework [![Build Status](https://ci.spring.io/api/v1/teams/spring-framework/pipelines/spring-framework-5.3.x/jobs/build/badge)](https://ci.spring.io/teams/spring-framework/pipelines/spring-framework-5.3.x?groups=Build") [![Revved up by Gradle Enterprise](https://img.shields.io/badge/Revved%20up%20by-Gradle%20Enterprise-06A0CE?logo=Gradle&labelColor=02303A)](https://ge.spring.io/scans?search.rootProjectNames=spring)
+# <img src="src/docs/spring-framework.png" width="80" height="80"> Spring Framework [![Build Status](https://ci.spring.io/api/v1/teams/spring-framework/pipelines/spring-framework-5.3.x/jobs/build/badge)](https://ci.spring.io/teams/spring-framework/pipelines/spring-framework-5.3.x?groups=Build")

 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". 

@@ -25,10 +25,6 @@ See the [Micro-Benchmarks](https://github.com/spring-projects/spring-framework/w

 See the [Build from Source](https://github.com/spring-projects/spring-framework/wiki/Build-from-Source) Wiki page and the [CONTRIBUTING.md](CONTRIBUTING.md) file.

-## Continuous Integration Builds
-
-Information regarding CI builds can be found in the [Spring Framework Concourse pipeline](ci/README.adoc) documentation.
-
 ## 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 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).
@@ -1,17 +1,15 @@
 plugins {
-	id 'io.spring.dependency-management' version '1.0.11.RELEASE' apply false
-	id 'io.spring.nohttp' version '0.0.10'
-	id 'org.jetbrains.kotlin.jvm' version '1.5.30' apply false
-	id 'org.jetbrains.dokka' version '1.5.0' apply false
-	id 'org.asciidoctor.jvm.convert' version '3.3.2'
-	id 'org.asciidoctor.jvm.pdf' version '3.3.2'
-	id 'de.undercouch.download' version '4.1.2'
-	id "io.freefair.aspectj" version '6.1.0' apply false
-	id "com.github.ben-manes.versions" version '0.39.0'
-	id "com.github.johnrengelman.shadow" version '7.0.0' apply false
-	id "me.champeau.jmh" version "0.6.6" apply false
-	id "org.jetbrains.kotlin.plugin.serialization" version "1.5.30" apply false
-	id "org.unbroken-dome.xjc" version '2.0.0' apply false
+	id 'io.spring.dependency-management' version '1.0.9.RELEASE' apply false
+	id 'io.spring.nohttp' version '0.0.5.RELEASE'
+	id 'org.jetbrains.kotlin.jvm' version '1.4.10' apply false
+	id 'org.jetbrains.dokka' version '0.10.1' apply false
+	id 'org.asciidoctor.jvm.convert' version '3.1.0'
+	id 'org.asciidoctor.jvm.pdf' version '3.1.0'
+	id 'de.undercouch.download' version '4.1.1'
+	id "io.freefair.aspectj" version '5.1.1' apply false
+	id "com.github.ben-manes.versions" version '0.28.0'
+	id "me.champeau.gradle.jmh" version "0.5.0" apply false
+	id "org.jetbrains.kotlin.plugin.serialization" version "1.4.10" apply false
 }

 ext {
@@ -27,19 +25,18 @@ configure(allprojects) { project ->

 	dependencyManagement {
 		imports {
-			mavenBom "com.fasterxml.jackson:jackson-bom:2.12.5"
-			mavenBom "io.netty:netty-bom:4.1.68.Final"
-			mavenBom "io.projectreactor:reactor-bom:2020.0.11"
-			mavenBom "io.r2dbc:r2dbc-bom:Arabba-SR10"
-			mavenBom "io.rsocket:rsocket-bom:1.1.1"
-			mavenBom "org.eclipse.jetty:jetty-bom:9.4.43.v20210629"
-			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.5.30"
-			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.5.2"
-			mavenBom "org.jetbrains.kotlinx:kotlinx-serialization-bom:1.2.2"
-			mavenBom "org.junit:junit-bom:5.8.0"
+			mavenBom "com.fasterxml.jackson:jackson-bom:2.11.3"
+			mavenBom "io.netty:netty-bom:4.1.53.Final"
+			mavenBom "io.projectreactor:reactor-bom:2020.0.0"
+			mavenBom "io.r2dbc:r2dbc-bom:Arabba-SR8"
+			mavenBom "io.rsocket:rsocket-bom:1.1.0"
+			mavenBom "org.eclipse.jetty:jetty-bom:9.4.33.v20201020"
+			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.4.10"
+			mavenBom "org.jetbrains.kotlinx:kotlinx-coroutines-bom:1.4.0"
+			mavenBom "org.junit:junit-bom:5.7.0"
 		}
 		dependencies {
-			dependencySet(group: 'org.apache.logging.log4j', version: '2.14.1') {
+			dependencySet(group: 'org.apache.logging.log4j', version: '2.13.3') {
 				entry 'log4j-api'
 				entry 'log4j-core'
 				entry 'log4j-jul'
@@ -51,12 +48,12 @@ configure(allprojects) { project ->
 			}
 			dependency "com.google.code.findbugs:jsr305:3.0.2"

-			dependencySet(group: 'org.aspectj', version: '1.9.7') {
+			dependencySet(group: 'org.aspectj', version: '1.9.6') {
 				entry 'aspectjrt'
 				entry 'aspectjtools'
 				entry 'aspectjweaver'
 			}
-			dependencySet(group: 'org.codehaus.groovy', version: '3.0.8') {
+			dependencySet(group: 'org.codehaus.groovy', version: '3.0.6') {
 				entry 'groovy'
 				entry 'groovy-jsr223'
 				entry 'groovy-templates'  // requires findbugs for warning-free compilation
@@ -66,24 +63,23 @@ configure(allprojects) { project ->

 			dependency "io.reactivex:rxjava:1.3.8"
 			dependency "io.reactivex:rxjava-reactive-streams:1.2.1"
-			dependency "io.reactivex.rxjava2:rxjava:2.2.21"
-			dependency "io.reactivex.rxjava3:rxjava:3.1.1"
-			dependency "io.smallrye.reactive:mutiny:1.0.0"
+			dependency "io.reactivex.rxjava2:rxjava:2.2.19"
+			dependency "io.reactivex.rxjava3:rxjava:3.0.7"
 			dependency "io.projectreactor.tools:blockhound:1.0.4.RELEASE"

 			dependency "com.caucho:hessian:4.0.63"
-			dependency "com.fasterxml:aalto-xml:1.3.0"
-			dependency("com.fasterxml.woodstox:woodstox-core:6.2.6") {
+			dependency "com.fasterxml:aalto-xml:1.2.2"
+			dependency("com.fasterxml.woodstox:woodstox-core:6.2.3") {
 				exclude group: "stax", name: "stax-api"
 			}
-			dependency "com.google.code.gson:gson:2.8.8"
-			dependency "com.google.protobuf:protobuf-java-util:3.17.3"
+			dependency "com.google.code.gson:gson:2.8.6"
+			dependency "com.google.protobuf:protobuf-java-util:3.13.0"
 			dependency "com.googlecode.protobuf-java-format:protobuf-java-format:1.4"
-			dependency("com.thoughtworks.xstream:xstream:1.4.18") {
+			dependency("com.thoughtworks.xstream:xstream:1.4.13") {
 				exclude group: "xpp3", name: "xpp3_min"
 				exclude group: "xmlpull", name: "xmlpull"
 			}
-			dependency "org.apache.johnzon:johnzon-jsonb:1.2.10"
+			dependency "org.apache.johnzon:johnzon-jsonb:1.2.8"
 			dependency("org.codehaus.jettison:jettison:1.3.8") {
 				exclude group: "stax", name: "stax-api"
 			}
@@ -92,16 +88,20 @@ configure(allprojects) { project ->
 				entry 'jibx-run'
 			}
 			dependency "org.ogce:xpp3:1.1.6"
-			dependency "org.yaml:snakeyaml:1.29"
+			dependency "org.yaml:snakeyaml:1.27"
+			dependencySet(group: 'org.jetbrains.kotlinx', version: '1.0.0') {
+				entry 'kotlinx-serialization-core'
+				entry 'kotlinx-serialization-json'
+			}

 			dependency "com.h2database:h2:1.4.200"
-			dependency "com.github.ben-manes.caffeine:caffeine:2.9.1"
-			dependency "com.github.librepdf:openpdf:1.3.26"
+			dependency "com.github.ben-manes.caffeine:caffeine:2.8.6"
+			dependency "com.github.librepdf:openpdf:1.3.22"
 			dependency "com.rometools:rome:1.15.0"
 			dependency "commons-io:commons-io:2.5"
 			dependency "io.vavr:vavr:0.10.3"
 			dependency "net.sf.jopt-simple:jopt-simple:5.0.4"
-			dependencySet(group: 'org.apache.activemq', version: '5.16.2') {
+			dependencySet(group: 'org.apache.activemq', version: '5.16.0') {
 				entry 'activemq-broker'
 				entry('activemq-kahadb-store') {
 					exclude group: "org.springframework", name: "spring-context"
@@ -116,30 +116,30 @@ configure(allprojects) { project ->
 			}
 			dependency "org.apache.poi:poi-ooxml:4.1.2"
 			dependency "org.apache-extras.beanshell:bsh:2.0b6"
-			dependency "org.freemarker:freemarker:2.3.31"
-			dependency "org.hsqldb:hsqldb:2.5.2"
+			dependency "org.freemarker:freemarker:2.3.30"
+			dependency "org.hsqldb:hsqldb:2.5.1"
 			dependency "org.quartz-scheduler:quartz:2.3.2"
 			dependency "org.codehaus.fabric3.api:commonj:1.1.0"
 			dependency "net.sf.ehcache:ehcache:2.10.6"
 			dependency "org.ehcache:jcache:1.0.1"
 			dependency "org.ehcache:ehcache:3.4.0"
-			dependency "org.hibernate:hibernate-core:5.4.32.Final"
-			dependency "org.hibernate:hibernate-validator:6.2.0.Final"
-			dependency "org.webjars:webjars-locator-core:0.47"
+			dependency "org.hibernate:hibernate-core:5.4.22.Final"
+			dependency "org.hibernate:hibernate-validator:6.1.6.Final"
+			dependency "org.webjars:webjars-locator-core:0.46"
 			dependency "org.webjars:underscorejs:1.8.3"

-			dependencySet(group: 'org.apache.tomcat', version: '9.0.52') {
+			dependencySet(group: 'org.apache.tomcat', version: '9.0.39') {
 				entry 'tomcat-util'
 				entry('tomcat-websocket') {
 					exclude group: "org.apache.tomcat", name: "tomcat-websocket-api"
 					exclude group: "org.apache.tomcat", name: "tomcat-servlet-api"
 				}
 			}
-			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.52') {
+			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.39') {
 				entry 'tomcat-embed-core'
 				entry 'tomcat-embed-websocket'
 			}
-			dependencySet(group: 'io.undertow', version: '2.2.10.Final') {
+			dependencySet(group: 'io.undertow', version: '2.2.2.Final') {
 				entry 'undertow-core'
 				entry('undertow-websockets-jsr') {
 					exclude group: "org.jboss.spec.javax.websocket", name: "jboss-websocket-api_1.1_spec"
@@ -154,17 +154,17 @@ configure(allprojects) { project ->
 				entry 'okhttp'
 				entry 'mockwebserver'
 			}
-			dependency("org.apache.httpcomponents:httpclient:4.5.13") {
+			dependency("org.apache.httpcomponents:httpclient:4.5.12") {
 				exclude group: "commons-logging", name: "commons-logging"
 			}
 			dependency("org.apache.httpcomponents:httpasyncclient:4.1.4") {
 				exclude group: "commons-logging", name: "commons-logging"
 			}
-			dependency 'org.apache.httpcomponents.client5:httpclient5:5.1'
-			dependency 'org.apache.httpcomponents.core5:httpcore5-reactive:5.1.1'
-			dependency "org.eclipse.jetty:jetty-reactive-httpclient:1.1.9"
+			dependency 'org.apache.httpcomponents.client5:httpclient5:5.0.3'
+			dependency 'org.apache.httpcomponents.core5:httpcore5-reactive:5.0.2'
+			dependency "org.eclipse.jetty:jetty-reactive-httpclient:1.1.4"

-			dependency "org.jruby:jruby:9.2.19.0"
+			dependency "org.jruby:jruby:9.2.13.0"
 			dependency "org.python:jython-standalone:2.7.1"
 			dependency "org.mozilla:rhino:1.7.11"

@@ -181,34 +181,34 @@ configure(allprojects) { project ->
 				exclude group: "dom4j", name: "dom4j"
 			}

-			dependency("junit:junit:4.13.2") {
+			dependency("junit:junit:4.13.1") {
 				exclude group: "org.hamcrest", name: "hamcrest-core"
 			}
 			dependency("de.bechte.junit:junit-hierarchicalcontextrunner:4.12.1") {
 				exclude group: "junit", name: "junit"
 			}
-			dependency "org.testng:testng:7.4.0"
+			dependency "org.testng:testng:7.3.0"
 			dependency "org.hamcrest:hamcrest:2.1"
 			dependency "org.awaitility:awaitility:3.1.6"
-			dependency "org.assertj:assertj-core:3.20.2"
-			dependencySet(group: 'org.xmlunit', version: '2.8.2') {
+			dependency "org.assertj:assertj-core:3.17.2"
+			dependencySet(group: 'org.xmlunit', version: '2.6.2') {
 				entry 'xmlunit-assertj'
 				entry('xmlunit-matchers') {
 					exclude group: "org.hamcrest", name: "hamcrest-core"
 				}
 			}
-			dependencySet(group: 'org.mockito', version: '3.12.4') {
+			dependencySet(group: 'org.mockito', version: '3.5.15') {
 				entry('mockito-core') {
 					exclude group: "org.hamcrest", name: "hamcrest-core"
 				}
 				entry 'mockito-junit-jupiter'
 			}
-			dependency "io.mockk:mockk:1.12.0"
+			dependency "io.mockk:mockk:1.10.0"

-			dependency("net.sourceforge.htmlunit:htmlunit:2.52.0") {
+			dependency("net.sourceforge.htmlunit:htmlunit:2.44.0") {
 				exclude group: "commons-logging", name: "commons-logging"
 			}
-			dependency("org.seleniumhq.selenium:htmlunit-driver:2.52.0") {
+			dependency("org.seleniumhq.selenium:htmlunit-driver:2.44.0") {
 				exclude group: "commons-logging", name: "commons-logging"
 			}
 			dependency("org.seleniumhq.selenium:selenium-java:3.141.59") {
@@ -216,7 +216,7 @@ configure(allprojects) { project ->
 				exclude group: "io.netty", name: "netty"
 			}
 			dependency "org.skyscreamer:jsonassert:1.5.0"
-			dependency "com.jayway.jsonpath:json-path:2.6.0"
+			dependency "com.jayway.jsonpath:json-path:2.4.0"
 			dependency "org.bouncycastle:bcpkix-jdk15on:1.66"

 			dependencySet(group: 'org.apache.tiles', version: '3.0.8') {
@@ -236,8 +236,8 @@ configure(allprojects) { project ->

 			dependency "com.ibm.websphere:uow:6.0.2.17"
 			dependency "com.jamonapi:jamon:2.82"
-			dependency "joda-time:joda-time:2.10.10"
-			dependency "org.eclipse.persistence:org.eclipse.persistence.jpa:2.7.9"
+			dependency "joda-time:joda-time:2.10.6"
+			dependency "org.eclipse.persistence:org.eclipse.persistence.jpa:2.7.7"
 			dependency "org.javamoney:moneta:1.3"

 			dependency "com.sun.activation:javax.activation:1.2.0"
@@ -308,23 +308,23 @@ configure([rootProject] + javaProjects) { project ->
 	apply plugin: "java-test-fixtures"
 	apply plugin: "checkstyle"
 	apply plugin: 'org.springframework.build.compile'
-	apply from: "${rootDir}/gradle/toolchains.gradle"
+	apply from: "${rootDir}/gradle/custom-java-home.gradle"
 	apply from: "${rootDir}/gradle/ide.gradle"

 	pluginManager.withPlugin("kotlin") {
 		apply plugin: "org.jetbrains.dokka"
-		apply from: "${rootDir}/gradle/docs-dokka.gradle"
-
 		compileKotlin {
 			kotlinOptions {
+				jvmTarget = "1.8"
 				languageVersion = "1.3"
 				apiVersion = "1.3"
-				freeCompilerArgs = ["-Xjsr305=strict", "-Xsuppress-version-warnings", "-Xopt-in=kotlin.RequiresOptIn"]
+				freeCompilerArgs = ["-Xjsr305=strict"]
 				allWarningsAsErrors = true
 			}
 		}
 		compileTestKotlin {
 			kotlinOptions {
+				jvmTarget = "1.8"
 				freeCompilerArgs = ["-Xjsr305=strict"]
 			}
 		}
@@ -339,25 +339,23 @@ configure([rootProject] + javaProjects) { project ->
 	}

 	checkstyle {
-		toolVersion = "8.45.1"
+		toolVersion = "8.36.2"
 		configDirectory.set(rootProject.file("src/checkstyle"))
 	}

 	dependencies {
-		testImplementation("org.junit.jupiter:junit-jupiter-api")
-		testImplementation("org.junit.jupiter:junit-jupiter-params")
-		testImplementation("org.junit.platform:junit-platform-suite-api")
-		testImplementation("org.mockito:mockito-core")
-		testImplementation("org.mockito:mockito-junit-jupiter")
-		testImplementation("io.mockk:mockk")
-		testImplementation("org.assertj:assertj-core")
+		testCompile("org.junit.jupiter:junit-jupiter-api")
+		testCompile("org.junit.jupiter:junit-jupiter-params")
+		testCompile("org.mockito:mockito-core")
+		testCompile("org.mockito:mockito-junit-jupiter")
+		testCompile("io.mockk:mockk")
+		testCompile("org.assertj:assertj-core")
 		// Pull in the latest JUnit 5 Launcher API to ensure proper support in IDEs.
-		testRuntimeOnly("org.junit.platform:junit-platform-launcher")
-		testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine")
-		testRuntimeOnly("org.junit.platform:junit-platform-suite-engine")
-		testRuntimeOnly("org.apache.logging.log4j:log4j-core")
-		testRuntimeOnly("org.apache.logging.log4j:log4j-slf4j-impl")
-		testRuntimeOnly("org.apache.logging.log4j:log4j-jul")
+		testRuntime("org.junit.platform:junit-platform-launcher")
+		testRuntime("org.junit.jupiter:junit-jupiter-engine")
+		testRuntime("org.apache.logging.log4j:log4j-core")
+		testRuntime("org.apache.logging.log4j:log4j-slf4j-impl")
+		testRuntime("org.apache.logging.log4j:log4j-jul")
 		// JSR-305 only used for non-required meta-annotations
 		compileOnly("com.google.code.findbugs:jsr305")
 		testCompileOnly("com.google.code.findbugs:jsr305")
@@ -368,7 +366,7 @@ configure([rootProject] + javaProjects) { project ->
 			"https://docs.oracle.com/javase/8/docs/api/",
 			"https://docs.oracle.com/javaee/7/api/",
 			"https://docs.oracle.com/cd/E13222_01/wls/docs90/javadocs/",  // CommonJ
-			"https://www.ibm.com/docs/api/v1/content/SSEQTP_8.5.5/com.ibm.websphere.javadoc.doc/web/apidocs/",
+			"https://www.ibm.com/support/knowledgecenter/SS7JFU_8.5.5/com.ibm.websphere.javadoc.doc/web/apidocs/",
 			"https://glassfish.java.net/nonav/docs/v3/api/",
 			"https://docs.jboss.org/jbossas/javadoc/4.0.5/connector/",
 			"https://docs.jboss.org/jbossas/javadoc/7.1.2.Final/",
@@ -380,13 +378,10 @@ configure([rootProject] + javaProjects) { project ->
 			"https://fasterxml.github.io/jackson-core/javadoc/2.10/",
 			"https://fasterxml.github.io/jackson-databind/javadoc/2.10/",
 			"https://fasterxml.github.io/jackson-dataformat-xml/javadoc/2.10/",
-			"https://hc.apache.org/httpcomponents-client-5.1.x/current/httpclient5/apidocs/",
+			"https://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/",
 			"https://projectreactor.io/docs/test/release/api/",
-			"https://junit.org/junit4/javadoc/4.13.2/",
-			"https://junit.org/junit5/docs/5.8.0/api/",
-			"https://www.reactive-streams.org/reactive-streams-1.0.3-javadoc/",
-			"https://javadoc.io/static/io.rsocket/rsocket-core/1.1.1/",
-			"https://r2dbc.io/spec/0.8.5.RELEASE/api/"
+			"https://junit.org/junit4/javadoc/4.13.1/",
+			"https://junit.org/junit5/docs/5.7.0/api/"
 	] as String[]
 }

@@ -8,10 +8,16 @@ They are declared in the `build.gradle` file in this folder.
 ### Compiler conventions

 The `org.springframework.build.compile` plugin applies the Java compiler conventions to the build.
+By default, the build compiles sources with Java `1.8` source and target compatibility.
+You can test a different source compatibility version on the CLI with a project property like:
+
+```
+./gradlew test -PjavaSourceVersion=11
+```

 ## Build Plugins

-### Optional dependencies
+## Optional dependencies

 The `org.springframework.build.optional-dependencies` plugin creates a new `optional`
 Gradle configuration - it adds the dependencies to the project's compile and runtime classpath
@@ -19,7 +25,7 @@ but doesn't affect the classpath of dependent projects.
 This plugin does not provide a `provided` configuration, as the native `compileOnly` and `testCompileOnly`
 configurations are preferred.

-### API Diff
+## API Diff

 This plugin uses the [Gradle JApiCmp](https://github.com/melix/japicmp-gradle-plugin) plugin
 to generate API Diff reports for each Spring Framework module. This plugin is applied once on the root
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -20,22 +20,31 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

+import org.gradle.api.JavaVersion;
 import org.gradle.api.Plugin;
 import org.gradle.api.Project;
-import org.gradle.api.plugins.JavaLibraryPlugin;
 import org.gradle.api.plugins.JavaPlugin;
 import org.gradle.api.plugins.JavaPluginConvention;
 import org.gradle.api.tasks.compile.JavaCompile;

 /**
 * {@link Plugin} that applies conventions for compiling Java sources in Spring Framework.
+ * <p>One can override the default Java source compatibility version
+ * with a dedicated property on the CLI: {@code "./gradlew test -PjavaSourceVersion=11"}.
 *
 * @author Brian Clozel
 * @author Sam Brannen
- * @author Sebastien Deleuze
 */
 public class CompilerConventionsPlugin implements Plugin<Project> {

+	/**
+	 * The project property that can be used to switch the Java source
+	 * compatibility version for building source and test classes.
+	 */
+	public static final String JAVA_SOURCE_VERSION_PROPERTY = "javaSourceVersion";
+
+	public static final JavaVersion DEFAULT_COMPILER_VERSION = JavaVersion.VERSION_1_8;
+
 	private static final List<String> COMPILER_ARGS;

 	private static final List<String> TEST_COMPILER_ARGS;
@@ -44,8 +53,7 @@ public class CompilerConventionsPlugin implements Plugin<Project> {
 		List<String> commonCompilerArgs = Arrays.asList(
 				"-Xlint:serial", "-Xlint:cast", "-Xlint:classfile", "-Xlint:dep-ann",
 				"-Xlint:divzero", "-Xlint:empty", "-Xlint:finally", "-Xlint:overrides",
-				"-Xlint:path", "-Xlint:processing", "-Xlint:static", "-Xlint:try", "-Xlint:-options",
-				"-parameters"
+				"-Xlint:path", "-Xlint:processing", "-Xlint:static", "-Xlint:try", "-Xlint:-options"
 		);
 		COMPILER_ARGS = new ArrayList<>();
 		COMPILER_ARGS.addAll(commonCompilerArgs);
@@ -56,12 +64,12 @@ public class CompilerConventionsPlugin implements Plugin<Project> {
 		TEST_COMPILER_ARGS = new ArrayList<>();
 		TEST_COMPILER_ARGS.addAll(commonCompilerArgs);
 		TEST_COMPILER_ARGS.addAll(Arrays.asList("-Xlint:-varargs", "-Xlint:-fallthrough", "-Xlint:-rawtypes",
-				"-Xlint:-deprecation", "-Xlint:-unchecked"));
+				"-Xlint:-deprecation", "-Xlint:-unchecked", "-parameters"));
 	}

 	@Override
 	public void apply(Project project) {
-		project.getPlugins().withType(JavaLibraryPlugin.class, javaPlugin -> applyJavaCompileConventions(project));
+		project.getPlugins().withType(JavaPlugin.class, javaPlugin -> applyJavaCompileConventions(project));
 	}

 	/**
@@ -71,6 +79,15 @@ public class CompilerConventionsPlugin implements Plugin<Project> {
 	 */
 	private void applyJavaCompileConventions(Project project) {
 		JavaPluginConvention java = project.getConvention().getPlugin(JavaPluginConvention.class);
+		if (project.hasProperty(JAVA_SOURCE_VERSION_PROPERTY)) {
+			JavaVersion javaSourceVersion = JavaVersion.toVersion(project.property(JAVA_SOURCE_VERSION_PROPERTY));
+			java.setSourceCompatibility(javaSourceVersion);
+		}
+		else {
+			java.setSourceCompatibility(DEFAULT_COMPILER_VERSION);
+		}
+		java.setTargetCompatibility(DEFAULT_COMPILER_VERSION);
+
 		project.getTasks().withType(JavaCompile.class)
 				.matching(compileTask -> compileTask.getName().equals(JavaPlugin.COMPILE_JAVA_TASK_NAME))
 				.forEach(compileTask -> {
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2019 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 +19,6 @@ 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.attributes.Usage;
 import org.gradle.api.plugins.JavaPlugin;
 import org.gradle.api.plugins.JavaPluginConvention;
 import org.gradle.api.tasks.SourceSetContainer;
@@ -29,7 +28,7 @@ import org.gradle.plugins.ide.eclipse.model.EclipseModel;
 /**
 * A {@code Plugin} that adds support for Maven-style optional dependencies. Creates a new
 * {@code optional} configuration. The {@code optional} configuration is part of the
- * project's compile and runtime classpaths but does not affect the classpath of
+ * project's compile and runtime classpath's but does not affect the classpath of
 * dependent projects.
 *
 * @author Andy Wilkinson
@@ -44,16 +43,22 @@ public class OptionalDependenciesPlugin implements Plugin<Project> {
 	@Override
 	public void apply(Project project) {
 		Configuration optional = project.getConfigurations().create("optional");
-		optional.setCanBeConsumed(false);
-		optional.setCanBeResolved(false);
 		project.getPlugins().withType(JavaPlugin.class, (javaPlugin) -> {
-			SourceSetContainer sourceSets = project.getConvention().getPlugin(JavaPluginConvention.class)
-					.getSourceSets();
+			SourceSetContainer sourceSets = project.getConvention()
+					.getPlugin(JavaPluginConvention.class).getSourceSets();
 			sourceSets.all((sourceSet) -> {
-				project.getConfigurations().getByName(sourceSet.getCompileClasspathConfigurationName()).extendsFrom(optional);
-				project.getConfigurations().getByName(sourceSet.getRuntimeClasspathConfigurationName()).extendsFrom(optional);
+				sourceSet.setCompileClasspath(
+						sourceSet.getCompileClasspath().plus(optional));
+				sourceSet.setRuntimeClasspath(
+						sourceSet.getRuntimeClasspath().plus(optional));
 			});
 		});
+		project.getPlugins().withType(EclipsePlugin.class, (eclipePlugin) -> {
+			project.getExtensions().getByType(EclipseModel.class)
+					.classpath((classpath) -> {
+						classpath.getPlusConfigurations().add(optional);
+					});
+		});
 	}

 }
@@ -1,8 +1,7 @@
 == Spring Framework Concourse pipeline

-The Spring Framework uses https://concourse-ci.org/[Concourse] for its CI build and other automated tasks.
-The Spring team has a dedicated Concourse instance available at https://ci.spring.io with a build pipeline
-for https://ci.spring.io/teams/spring-framework/pipelines/spring-framework-5.3.x[Spring Framework 5.3.x].
+The Spring Framework is using https://concourse-ci.org/[Concourse] for its CI build and other automated tasks.
+The Spring team has a dedicated Concourse instance available at https://ci.spring.io.

 === Setting up your development environment

@@ -26,17 +25,13 @@ spring                https://ci.spring.io  spring-framework      Wed, 25 Mar 20
 ----

 === Pipeline configuration and structure
-
 The build pipelines are described in `pipeline.yml` file.
-
 This file is listing Concourse resources, i.e. build inputs and outputs such as container images, artifact repositories, source repositories, notification services, etc.
-
 It also describes jobs (a job is a sequence of inputs, tasks and outputs); jobs are organized by groups.

 The `pipeline.yml` definition contains `((parameters))` which are loaded from the `parameters.yml` file or from our https://docs.cloudfoundry.org/credhub/[credhub instance].

 You'll find in this folder the following resources:
-
 * `pipeline.yml` the build pipeline
 * `parameters.yml` the build parameters used for the pipeline
 * `images/` holds the container images definitions used in this pipeline
@@ -46,7 +41,6 @@ You'll find in this folder the following resources:
 === Updating the build pipeline

 Updating files on the repository is not enough to update the build pipeline, as changes need to be applied.
-
 The pipeline can be deployed using the following command:

 [source]
@@ -54,4 +48,4 @@ The pipeline can be deployed using the following command:
 $ fly -t spring set-pipeline -p spring-framework-5.3.x -c ci/pipeline.yml -l ci/parameters.yml
 ----

-NOTE: This assumes that you have credhub integration configured with the appropriate secrets.
+NOTE: This assumes that you have credhub integration configured with the appropriate secrets.
@@ -4,7 +4,7 @@ changelog:
    - title: ":star: New Features"
      labels:
        - "type: enhancement"
-    - title: ":lady_beetle: Bug Fixes"
+    - title: ":beetle: Bug Fixes"
      labels:
        - "type: bug"
        - "type: regression"
@@ -1,10 +1,3 @@
-logging:
-  level:
-    io.spring.concourse: DEBUG
-spring:
-  main:
-    banner-mode: off
-sonatype:
-  exclude:
-    - 'build-info\.json'
-    - '.*\.zip'
+distribute:
+  optional-deployments:
+    - '.*\\.zip'
@@ -1,11 +0,0 @@
-FROM ubuntu:focal-20210827
-
-ADD setup.sh /setup.sh
-ADD get-jdk-url.sh /get-jdk-url.sh
-RUN ./setup.sh java8
-
-ENV JAVA_HOME /opt/openjdk/java8
-ENV JDK11 /opt/openjdk/java11
-ENV JDK16 /opt/openjdk/java16
-
-ENV PATH $JAVA_HOME/bin:$PATH
@@ -3,13 +3,16 @@ set -e

 case "$1" in
 	java8)
-		 echo "https://github.com/adoptium/temurin8-binaries/releases/download/jdk8u302-b08/OpenJDK8U-jdk_x64_linux_hotspot_8u302b08.tar.gz"
+		 echo "https://github.com/AdoptOpenJDK/openjdk8-binaries/releases/download/jdk8u265-b01/OpenJDK8U-jdk_x64_linux_hotspot_8u265b01.tar.gz"
 	;;
 	java11)
-		 echo "https://github.com/adoptium/temurin11-binaries/releases/download/jdk-11.0.12%2B7/OpenJDK11U-jdk_x64_linux_hotspot_11.0.12_7.tar.gz"
+		 echo "https://github.com/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.8%2B10/OpenJDK11U-jdk_x64_linux_hotspot_11.0.8_10.tar.gz"
 	;;
-  java16)
-		 echo "https://github.com/adoptium/temurin16-binaries/releases/download/jdk-16.0.2%2B7/OpenJDK16U-jdk_x64_linux_hotspot_16.0.2_7.tar.gz"
+	java14)
+		 echo "https://github.com/AdoptOpenJDK/openjdk14-binaries/releases/download/jdk-14.0.2%2B12/OpenJDK14U-jdk_x64_linux_hotspot_14.0.2_12.tar.gz"
+	;;
+  java15)
+		 echo "https://github.com/AdoptOpenJDK/openjdk15-binaries/releases/download/jdk-15%2B36/OpenJDK15U-jdk_x64_linux_hotspot_15_36.tar.gz"
  ;;
  *)
 		echo $"Unknown java version"
@@ -5,34 +5,24 @@ set -ex
 # UTILS
 ###########################################################

-export DEBIAN_FRONTEND=noninteractive
 apt-get update
-apt-get install --no-install-recommends -y tzdata ca-certificates net-tools libxml2-utils git curl libudev1 libxml2-utils iptables iproute2 jq fontconfig
-ln -fs /usr/share/zoneinfo/UTC /etc/localtime
-dpkg-reconfigure --frontend noninteractive tzdata
+apt-get install --no-install-recommends -y ca-certificates net-tools libxml2-utils git curl libudev1 libxml2-utils iptables iproute2 jq fontconfig
 rm -rf /var/lib/apt/lists/*

-curl https://raw.githubusercontent.com/spring-io/concourse-java-scripts/v0.0.4/concourse-java.sh > /opt/concourse-java.sh
+curl https://raw.githubusercontent.com/spring-io/concourse-java-scripts/v0.0.3/concourse-java.sh > /opt/concourse-java.sh

-curl --output /opt/concourse-release-scripts.jar https://repo.spring.io/release/io/spring/concourse/releasescripts/concourse-release-scripts/0.3.2/concourse-release-scripts-0.3.2.jar
+curl --output /opt/concourse-release-scripts.jar https://repo.spring.io/release/io/spring/concourse/releasescripts/concourse-release-scripts/0.2.1/concourse-release-scripts-0.2.1.jar

 ###########################################################
 # JAVA
 ###########################################################
+JDK_URL=$( ./get-jdk-url.sh $1 )

 mkdir -p /opt/openjdk
-pushd /opt/openjdk > /dev/null
-for jdk in java8 java11 java16
-do
-  JDK_URL=$( /get-jdk-url.sh $jdk )
-  mkdir $jdk
-  pushd $jdk > /dev/null
-  curl -L ${JDK_URL} | tar zx --strip-components=1
-  test -f bin/java
-  test -f bin/javac
-  popd > /dev/null
-done
-popd
+cd /opt/openjdk
+curl -L ${JDK_URL} | tar zx --strip-components=1
+test -f /opt/openjdk/bin/java
+test -f /opt/openjdk/bin/javac

 ###########################################################
 # GRADLE ENTERPRISE
@@ -0,0 +1,8 @@
+FROM ubuntu:bionic-20200713
+
+ADD setup.sh /setup.sh
+ADD get-jdk-url.sh /get-jdk-url.sh
+RUN ./setup.sh java8
+
+ENV JAVA_HOME /opt/openjdk
+ENV PATH $JAVA_HOME/bin:$PATH
@@ -0,0 +1,8 @@
+FROM ubuntu:bionic-20200713
+
+ADD setup.sh /setup.sh
+ADD get-jdk-url.sh /get-jdk-url.sh
+RUN ./setup.sh java11
+
+ENV JAVA_HOME /opt/openjdk
+ENV PATH $JAVA_HOME/bin:$PATH
@@ -0,0 +1,8 @@
+FROM ubuntu:bionic-20200713
+
+ADD setup.sh /setup.sh
+ADD get-jdk-url.sh /get-jdk-url.sh
+RUN ./setup.sh java14
+
+ENV JAVA_HOME /opt/openjdk
+ENV PATH $JAVA_HOME/bin:$PATH
@@ -0,0 +1,8 @@
+FROM ubuntu:bionic-20200713
+
+ADD setup.sh /setup.sh
+ADD get-jdk-url.sh /get-jdk-url.sh
+RUN ./setup.sh java15
+
+ENV JAVA_HOME /opt/openjdk
+ENV PATH $JAVA_HOME/bin:$PATH
@@ -5,9 +5,10 @@ github-repo: "https://github.com/spring-projects/spring-framework.git"
 github-repo-name: "spring-projects/spring-framework"
 docker-hub-organization: "springci"
 artifactory-server: "https://repo.spring.io"
-branch: "main"
-milestone: "5.3.x"
+branch: "master"
 build-name: "spring-framework"
 pipeline-name: "spring-framework"
 concourse-url: "https://ci.spring.io"
-task-timeout: 1h00m
+bintray-subject: "spring"
+bintray-repo: "jars"
+task-timeout: 1h00m
@@ -1,29 +1,21 @@
 anchors:
-  git-repo-resource-source: &git-repo-resource-source
-    uri: ((github-repo))
-    username: ((github-username))
-    password: ((github-ci-release-token))
-    branch: ((branch))
-  gradle-enterprise-task-params: &gradle-enterprise-task-params
-    GRADLE_ENTERPRISE_ACCESS_KEY: ((gradle_enterprise_secret_access_key))
-    GRADLE_ENTERPRISE_CACHE_USERNAME: ((gradle_enterprise_cache_user.username))
-    GRADLE_ENTERPRISE_CACHE_PASSWORD: ((gradle_enterprise_cache_user.password))
-  sonatype-task-params: &sonatype-task-params
-    SONATYPE_USERNAME: ((sonatype-username))
-    SONATYPE_PASSWORD: ((sonatype-password))
-    SONATYPE_URL: ((sonatype-url))
-    SONATYPE_STAGING_PROFILE_ID: ((sonatype-staging-profile-id))
  artifactory-task-params: &artifactory-task-params
    ARTIFACTORY_SERVER: ((artifactory-server))
    ARTIFACTORY_USERNAME: ((artifactory-username))
    ARTIFACTORY_PASSWORD: ((artifactory-password))
-  build-project-task-params: &build-project-task-params
-      BRANCH: ((branch))
-      <<: *gradle-enterprise-task-params
+  bintray-task-params: &bintray-task-params
+    BINTRAY_SUBJECT: ((bintray-subject))
+    BINTRAY_REPO: ((bintray-repo))
+    BINTRAY_USERNAME: ((bintray-username))
+    BINTRAY_API_KEY: ((bintray-api-key))
  docker-resource-source: &docker-resource-source
    username: ((docker-hub-username))
    password: ((docker-hub-password))
-    tag: ((milestone))
+    tag: 5.3.x
+  gradle-enterprise-task-params: &gradle-enterprise-task-params
+    GRADLE_ENTERPRISE_ACCESS_KEY: ((gradle_enterprise_secret_access_key))
+    GRADLE_ENTERPRISE_CACHE_USERNAME: ((gradle_enterprise_cache_user.username))
+    GRADLE_ENTERPRISE_CACHE_PASSWORD: ((gradle_enterprise_cache_user.password))
  slack-fail-params: &slack-fail-params
    text: >
      :concourse-failed: <https://ci.spring.io/teams/${BUILD_TEAM_NAME}/pipelines/${BUILD_PIPELINE_NAME}/jobs/${BUILD_JOB_NAME}/builds/${BUILD_NAME}|${BUILD_PIPELINE_NAME} ${BUILD_JOB_NAME} failed!>
@@ -32,6 +24,9 @@ anchors:
    silent: true
    icon_emoji: ":concourse:"
    username: concourse-ci
+  sonatype-task-params: &sonatype-task-params
+    SONATYPE_USER_TOKEN: ((sonatype-user-token))
+    SONATYPE_PASSWORD_TOKEN: ((sonatype-user-token-password))
  changelog-task-params: &changelog-task-params
    name: generated-changelog/tag
    tag: generated-changelog/tag
@@ -42,31 +37,30 @@ anchors:

 resource_types:
 - name: artifactory-resource
-  type: registry-image
+  type: docker-image
  source:
    repository: springio/artifactory-resource
-    tag: 0.0.17
+    tag: 0.0.12
 - name: github-status-resource
-  type: registry-image
+  type: docker-image
  source:
    repository: dpb587/github-status-resource
    tag: master
- name: pull-request
-  type: registry-image
-  source:
-    repository: teliaoss/github-pr-resource
-    tag: v0.23.0
 - name: slack-notification
-  type: registry-image
+  type: docker-image
  source:
    repository: cfcommunity/slack-notification-resource
    tag: latest
+
 resources:
 - name: git-repo
  type: git
  icon: github
  source:
-    <<: *git-repo-resource-source
+    uri: ((github-repo))
+    username: ((github-username))
+    password: ((github-password))
+    branch: ((branch))
 - name: every-morning
  type: time
  icon: alarm
@@ -81,12 +75,30 @@ resources:
    uri: ((github-repo))
    branch: ((branch))
    paths: ["ci/images/*"]
- name: ci-image
+- name: spring-framework-ci-image
  type: docker-image
  icon: docker
  source:
    <<: *docker-resource-source
-    repository: ((docker-hub-organization))/spring-framework-ci
+    repository: ((docker-hub-organization))/spring-framework-ci-image
+- name: spring-framework-jdk11-ci-image
+  type: docker-image
+  icon: docker
+  source:
+    <<: *docker-resource-source
+    repository: ((docker-hub-organization))/spring-framework-jdk11-ci-image
+- name: spring-framework-jdk14-ci-image
+  type: docker-image
+  icon: docker
+  source:
+    <<: *docker-resource-source
+    repository: ((docker-hub-organization))/spring-framework-jdk14-ci-image
+- name: spring-framework-jdk15-ci-image
+  type: docker-image
+  icon: docker
+  source:
+    <<: *docker-resource-source
+    repository: ((docker-hub-organization))/spring-framework-jdk15-ci-image
 - name: artifactory-repo
  type: artifactory-resource
  icon: package-variant
@@ -95,14 +107,6 @@ resources:
    username: ((artifactory-username))
    password: ((artifactory-password))
    build_name: ((build-name))
- name: git-pull-request
-  type: pull-request
-  icon: source-pull
-  source:
-    access_token: ((github-ci-pull-request-token))
-    repository: ((github-repo-name))
-    base_branch: ((branch))
-    ignore_paths: ["ci/*"]
 - name: repo-status-build
  type: github-status-resource
  icon: eye-check-outline
@@ -119,14 +123,22 @@ resources:
    access_token: ((github-ci-status-token))
    branch: ((branch))
    context: jdk11-build
- name: repo-status-jdk16-build
+- name: repo-status-jdk14-build
  type: github-status-resource
  icon: eye-check-outline
  source:
    repository: ((github-repo-name))
    access_token: ((github-ci-status-token))
    branch: ((branch))
-    context: jdk16-build
+    context: jdk14-build
+- name: repo-status-jdk15-build
+  type: github-status-resource
+  icon: eye-check-outline
+  source:
+    repository: ((github-repo-name))
+    access_token: ((github-ci-status-token))
+    branch: ((branch))
+    context: jdk15-build
 - name: slack-alert
  type: slack-notification
  icon: slack
@@ -149,33 +161,47 @@ resources:
    repository: spring-framework
    access_token: ((github-ci-release-token))
    pre_release: false
+
 jobs:
- name: build-ci-images
+- name: build-spring-framework-ci-images
  plan:
  - get: ci-images-git-repo
    trigger: true
  - in_parallel:
-    - put: ci-image
+    - put: spring-framework-ci-image
      params:
        build: ci-images-git-repo/ci/images
-        dockerfile: ci-images-git-repo/ci/images/ci-image/Dockerfile
+        dockerfile: ci-images-git-repo/ci/images/spring-framework-ci-image/Dockerfile
+    - put: spring-framework-jdk11-ci-image
+      params:
+        build: ci-images-git-repo/ci/images
+        dockerfile: ci-images-git-repo/ci/images/spring-framework-jdk11-ci-image/Dockerfile
+    - put: spring-framework-jdk14-ci-image
+      params:
+        build: ci-images-git-repo/ci/images
+        dockerfile: ci-images-git-repo/ci/images/spring-framework-jdk14-ci-image/Dockerfile
+    - put: spring-framework-jdk15-ci-image
+      params:
+        build: ci-images-git-repo/ci/images
+        dockerfile: ci-images-git-repo/ci/images/spring-framework-jdk15-ci-image/Dockerfile
 - name: build
  serial: true
  public: true
  plan:
-  - get: ci-image
+  - get: spring-framework-ci-image
  - get: git-repo
    trigger: true
  - put: repo-status-build
    params: { state: "pending", commit: "git-repo" }
  - do:
    - task: build-project
-      image: ci-image
-      file: git-repo/ci/tasks/build-project.yml
      privileged: true
      timeout: ((task-timeout))
+      image: spring-framework-ci-image
+      file: git-repo/ci/tasks/build-project.yml
      params:
-        <<: *build-project-task-params
+        BRANCH: ((branch))
+        <<: *gradle-enterprise-task-params
    on_failure:
      do:
      - put: repo-status-build
@@ -187,8 +213,6 @@ jobs:
    params: { state: "success", commit: "git-repo" }
  - put: artifactory-repo
    params: &artifactory-params
-      signing_key: ((signing-key))
-      signing_passphrase: ((signing-passphrase))
      repo: libs-snapshot-local
      folder: distribution-repository
      build_uri: "https://ci.spring.io/teams/${BUILD_TEAM_NAME}/pipelines/${BUILD_PIPELINE_NAME}/jobs/${BUILD_JOB_NAME}/builds/${BUILD_NAME}"
@@ -220,7 +244,7 @@ jobs:
  serial: true
  public: true
  plan:
-  - get: ci-image
+  - get: spring-framework-jdk11-ci-image
  - get: git-repo
  - get: every-morning
    trigger: true
@@ -228,13 +252,13 @@ jobs:
    params: { state: "pending", commit: "git-repo" }
  - do:
    - task: check-project
-      image: ci-image
-      file: git-repo/ci/tasks/check-project.yml
      privileged: true
      timeout: ((task-timeout))
+      image: spring-framework-jdk11-ci-image
+      file: git-repo/ci/tasks/check-project.yml
      params:
-        TEST_TOOLCHAIN: 11
-        <<: *build-project-task-params
+        BRANCH: ((branch))
+        <<: *gradle-enterprise-task-params
    on_failure:
      do:
      - put: repo-status-jdk11-build
@@ -244,73 +268,70 @@ jobs:
          <<: *slack-fail-params
  - put: repo-status-jdk11-build
    params: { state: "success", commit: "git-repo" }
- name: jdk16-build
+- name: jdk14-build
  serial: true
  public: true
  plan:
-    - get: ci-image
+    - get: spring-framework-jdk14-ci-image
    - get: git-repo
    - get: every-morning
      trigger: true
-    - put: repo-status-jdk16-build
+    - put: repo-status-jdk14-build
      params: { state: "pending", commit: "git-repo" }
    - do:
      - task: check-project
-        image: ci-image
-        file: git-repo/ci/tasks/check-project.yml
        privileged: true
        timeout: ((task-timeout))
+        image: spring-framework-jdk14-ci-image
+        file: git-repo/ci/tasks/check-project.yml
        params:
-          TEST_TOOLCHAIN: 15
-          <<: *build-project-task-params
+          BRANCH: ((branch))
+          <<: *gradle-enterprise-task-params
      on_failure:
        do:
-          - put: repo-status-jdk16-build
+          - put: repo-status-jdk14-build
            params: { state: "failure", commit: "git-repo" }
          - put: slack-alert
            params:
              <<: *slack-fail-params
-    - put: repo-status-jdk16-build
+    - put: repo-status-jdk14-build
      params: { state: "success", commit: "git-repo" }
- name: build-pull-requests
+- name: jdk15-build
  serial: true
  public: true
  plan:
-    - get: ci-image
+    - get: spring-framework-jdk15-ci-image
    - get: git-repo
-      resource: git-pull-request
+    - get: every-morning
      trigger: true
-      version: every
+    - put: repo-status-jdk15-build
+      params: { state: "pending", commit: "git-repo" }
    - do:
-      - put: git-pull-request
-        params:
-          path: git-repo
-          status: pending
-      - task: build-pr
-        image: ci-image
-        file: git-repo/ci/tasks/build-pr.yml
-        privileged: true
-        timeout: ((task-timeout))
-        params:
-          BRANCH: ((branch))
-      on_success:
-        put: git-pull-request
-        params:
-          path: git-repo
-          status: success
+        - task: check-project
+          privileged: true
+          timeout: ((task-timeout))
+          image: spring-framework-jdk15-ci-image
+          file: git-repo/ci/tasks/check-project.yml
+          params:
+            BRANCH: ((branch))
+            <<: *gradle-enterprise-task-params
      on_failure:
-        put: git-pull-request
-        params:
-          path: git-repo
-          status: failure
+        do:
+          - put: repo-status-jdk15-build
+            params: { state: "failure", commit: "git-repo" }
+          - put: slack-alert
+            params:
+              <<: *slack-fail-params
+    - put: repo-status-jdk15-build
+      params: { state: "success", commit: "git-repo" }
 - name: stage-milestone
  serial: true
  plan:
-    - get: ci-image
+    - get: spring-framework-ci-image
    - get: git-repo
      trigger: false
    - task: stage
-      image: ci-image
+      image: spring-framework-ci-image
      file: git-repo/ci/tasks/stage-version.yml
      params:
        RELEASE_TYPE: M
@@ -325,7 +346,7 @@ jobs:
 - name: promote-milestone
  serial: true
  plan:
-    - get: ci-image
+    - get: spring-framework-ci-image
    - get: git-repo
      trigger: false
    - get: artifactory-repo
@@ -335,7 +356,7 @@ jobs:
        download_artifacts: false
        save_build_info: true
    - task: promote
-      image: ci-image
+      image: spring-framework-ci-image
      file: git-repo/ci/tasks/promote-version.yml
      params:
        RELEASE_TYPE: M
@@ -351,11 +372,11 @@ jobs:
 - name: stage-rc
  serial: true
  plan:
-    - get: ci-image
+    - get: spring-framework-ci-image
    - get: git-repo
      trigger: false
    - task: stage
-      image: ci-image
+      image: spring-framework-ci-image
      file: git-repo/ci/tasks/stage-version.yml
      params:
        RELEASE_TYPE: RC
@@ -370,7 +391,7 @@ jobs:
 - name: promote-rc
  serial: true
  plan:
-    - get: ci-image
+    - get: spring-framework-ci-image
    - get: git-repo
      trigger: false
    - get: artifactory-repo
@@ -380,7 +401,7 @@ jobs:
        download_artifacts: false
        save_build_info: true
    - task: promote
-      image: ci-image
+      image: spring-framework-ci-image
      file: git-repo/ci/tasks/promote-version.yml
      params:
        RELEASE_TYPE: RC
@@ -396,11 +417,11 @@ jobs:
 - name: stage-release
  serial: true
  plan:
-    - get: ci-image
+    - get: spring-framework-ci-image
    - get: git-repo
      trigger: false
    - task: stage
-      image: ci-image
+      image: spring-framework-ci-image
      file: git-repo/ci/tasks/stage-version.yml
      params:
        RELEASE_TYPE: RELEASE
@@ -415,26 +436,26 @@ jobs:
 - name: promote-release
  serial: true
  plan:
-    - get: ci-image
+    - get: spring-framework-ci-image
    - get: git-repo
      trigger: false
    - get: artifactory-repo
      trigger: false
      passed: [stage-release]
      params:
-        download_artifacts: true
+        download_artifacts: false
        save_build_info: true
    - task: promote
-      image: ci-image
+      image: spring-framework-ci-image
      file: git-repo/ci/tasks/promote-version.yml
      params:
        RELEASE_TYPE: RELEASE
        <<: *artifactory-task-params
-        <<: *sonatype-task-params
- name: create-github-release
+        <<: *bintray-task-params
+- name: sync-to-maven-central
  serial: true
  plan:
-    - get: ci-image
+    - get: spring-framework-ci-image
    - get: git-repo
    - get: artifactory-repo
      trigger: true
@@ -442,6 +463,12 @@ jobs:
      params:
        download_artifacts: false
        save_build_info: true
+    - task: sync-to-maven-central
+      image: spring-framework-ci-image
+      file: git-repo/ci/tasks/sync-to-maven-central.yml
+      params:
+        <<: *bintray-task-params
+        <<: *sonatype-task-params
    - task: generate-changelog
      file: git-repo/ci/tasks/generate-changelog.yml
      params:
@@ -453,10 +480,8 @@ jobs:

 groups:
 - name: "builds"
-  jobs: ["build", "jdk11-build", "jdk16-build"]
+  jobs: ["build", "jdk11-build", "jdk14-build", "jdk15-build"]
 - name: "releases"
-  jobs: ["stage-milestone", "stage-rc", "stage-release", "promote-milestone", "promote-rc", "promote-release", "create-github-release"]
+  jobs: ["stage-milestone", "stage-rc", "stage-release", "promote-milestone","promote-rc", "promote-release", "sync-to-maven-central"]
 - name: "ci-images"
-  jobs: ["build-ci-images"]
- name: "pull-requests"
-  jobs: [ "build-pull-requests" ]
+  jobs: ["build-spring-framework-ci-images"]
@@ -1,8 +0,0 @@
-#!/bin/bash
-set -e
-
-source $(dirname $0)/common.sh
-
-pushd git-repo > /dev/null
-./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false --no-daemon --max-workers=4 check
-popd > /dev/null
@@ -4,6 +4,5 @@ set -e
 source $(dirname $0)/common.sh

 pushd git-repo > /dev/null
-./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false -Porg.gradle.java.installations.fromEnv=JDK11,JDK15 \
-  -PmainToolchain=${MAIN_TOOLCHAIN} -PtestToolchain=${TEST_TOOLCHAIN} --no-daemon --max-workers=4 check
+./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false --no-daemon --max-workers=4 check
 popd > /dev/null
@@ -2,7 +2,7 @@
 set -e

 CONFIG_DIR=git-repo/ci/config
-version=$( cat artifactory-repo/build-info.json | jq -r '.buildInfo.modules[0].id' | sed 's/.*:.*:\(.*\)/\1/' )
+version=$( cat version/version )

 java -jar /github-changelog-generator.jar \
  --spring.config.location=${CONFIG_DIR}/changelog-generator.yml \
@@ -6,13 +6,11 @@ CONFIG_DIR=git-repo/ci/config
 version=$( cat artifactory-repo/build-info.json | jq -r '.buildInfo.modules[0].id' | sed 's/.*:.*:\(.*\)/\1/' )
 export BUILD_INFO_LOCATION=$(pwd)/artifactory-repo/build-info.json

-java -jar /opt/concourse-release-scripts.jar \
-  --spring.config.location=${CONFIG_DIR}/release-scripts.yml \
-  publishToCentral $RELEASE_TYPE $BUILD_INFO_LOCATION artifactory-repo || { exit 1; }
+java -jar /opt/concourse-release-scripts.jar promote $RELEASE_TYPE $BUILD_INFO_LOCATION > /dev/null || { exit 1; }

 java -jar /opt/concourse-release-scripts.jar \
  --spring.config.location=${CONFIG_DIR}/release-scripts.yml \
-  promote $RELEASE_TYPE $BUILD_INFO_LOCATION || { exit 1; }
+  distribute $RELEASE_TYPE $BUILD_INFO_LOCATION > /dev/null || { exit 1; }

 echo "Promotion complete"
 echo $version > version/version
@@ -29,8 +29,8 @@ fi
 echo "Staging $stageVersion (next version will be $nextVersion)"
 sed -i "s/version=$snapshotVersion/version=$stageVersion/" gradle.properties

-git config user.name "Spring Builds" > /dev/null
-git config user.email "spring-builds@users.noreply.github.com" > /dev/null
+git config user.name "Spring Buildmaster" > /dev/null
+git config user.email "buildmaster@springframework.org" > /dev/null
 git add gradle.properties > /dev/null
 git commit -m"Release v$stageVersion" > /dev/null
 git tag -a "v$stageVersion" -m"Release v$stageVersion" > /dev/null
@@ -1,19 +0,0 @@
---
-platform: linux
-inputs:
- name: git-repo
-caches:
- path: gradle
-params:
-  BRANCH:
-  CI: true
-  GRADLE_ENTERPRISE_ACCESS_KEY:
-  GRADLE_ENTERPRISE_CACHE_USERNAME:
-  GRADLE_ENTERPRISE_CACHE_PASSWORD:
-  GRADLE_ENTERPRISE_URL: https://ge.spring.io
-run:
-  path: bash
-  args:
-    - -ec
-    - |
-      ${PWD}/git-repo/ci/scripts/build-pr.sh
@@ -10,8 +10,6 @@ caches:
 params:
  BRANCH:
  CI: true
-  MAIN_TOOLCHAIN:
-  TEST_TOOLCHAIN:
  GRADLE_ENTERPRISE_ACCESS_KEY:
  GRADLE_ENTERPRISE_CACHE_USERNAME:
  GRADLE_ENTERPRISE_CACHE_PASSWORD:
@@ -1,13 +1,13 @@
 ---
 platform: linux
 image_resource:
-  type: registry-image
+  type: docker-image
  source:
    repository: springio/github-changelog-generator
-    tag: '0.0.6'
+    tag: '0.0.4'
 inputs:
 - name: git-repo
- name: artifactory-repo
+- name: version
 outputs:
 - name: generated-changelog
 params:
@@ -10,9 +10,9 @@ params:
  ARTIFACTORY_SERVER:
  ARTIFACTORY_USERNAME:
  ARTIFACTORY_PASSWORD:
-  SONATYPE_USER:
-  SONATYPE_PASSWORD:
-  SONATYPE_URL:
-  SONATYPE_STAGING_PROFILE_ID:
+  BINTRAY_SUBJECT:
+  BINTRAY_REPO:
+  BINTRAY_USERNAME:
+  BINTRAY_API_KEY:
 run:
  path: git-repo/ci/scripts/promote-version.sh
@@ -0,0 +1,16 @@
+---
+platform: linux
+inputs:
+- name: git-repo
+- name: artifactory-repo
+outputs:
+- name: version
+params:
+  BINTRAY_REPO:
+  BINTRAY_SUBJECT:
+  BINTRAY_USERNAME:
+  BINTRAY_API_KEY:
+  SONATYPE_USER_TOKEN:
+  SONATYPE_PASSWORD_TOKEN:
+run:
+  path: git-repo/ci/scripts/sync-to-maven-central.sh
@@ -1,4 +1,4 @@
-version=5.3.10
+version=5.3.0
 org.gradle.jvmargs=-Xmx1536M
 org.gradle.caching=true
 org.gradle.parallel=true
@@ -0,0 +1,80 @@
+// -----------------------------------------------------------------------------
+//
+// This script adds support for the following two JVM system properties
+// that control the build for alternative JDKs (i.e., a JDK other than
+// the one used to launch the Gradle process).
+//
+// - customJavaHome: absolute path to the alternate JDK installation to
+//     use to compile Java code and execute tests. This system property
+//     is also used in spring-oxm.gradle to determine whether JiBX is
+//     supported.
+//
+// - customJavaSourceVersion: Java version supplied to the `--release`
+//     command line flag to control the Java source and target
+//     compatibility version. Supported versions include 9 or higher.
+//     Do not set this system property if Java 8 should be used.
+//
+// Examples:
+//
+// ./gradlew -DcustomJavaHome=/Library/Java/JavaVirtualMachines/jdk-14.jdk/Contents/Home test
+//
+// ./gradlew --no-build-cache -DcustomJavaHome=/Library/Java/JavaVirtualMachines/jdk-14.jdk/Contents/Home test
+//
+// ./gradlew -DcustomJavaHome=/Library/Java/JavaVirtualMachines/jdk-14.jdk/Contents/Home -DcustomJavaSourceVersion=14 test
+//
+//
+// Credits: inspired by work from Marc Philipp and Stephane Nicoll
+//
+// -----------------------------------------------------------------------------
+
+import org.gradle.internal.os.OperatingSystem
+// import org.jetbrains.kotlin.gradle.dsl.KotlinJvmCompile
+
+def customJavaHome = System.getProperty("customJavaHome")
+
+if (customJavaHome) {
+	def customJavaHomeDir = new File(customJavaHome)
+	def customJavaSourceVersion = System.getProperty("customJavaSourceVersion")
+
+	tasks.withType(JavaCompile) {
+		logger.info("Java home for " + it.name + " task in " + project.name + ": " + customJavaHomeDir)
+		options.forkOptions.javaHome = customJavaHomeDir
+		inputs.property("customJavaHome", customJavaHome)
+		if (customJavaSourceVersion) {
+			options.compilerArgs += [ "--release", customJavaSourceVersion]
+			inputs.property("customJavaSourceVersion", customJavaSourceVersion)
+		}
+	}
+
+	tasks.withType(GroovyCompile) {
+		logger.info("Java home for " + it.name + " task in " + project.name + ": " + customJavaHomeDir)
+		options.forkOptions.javaHome = customJavaHomeDir
+		inputs.property("customJavaHome", customJavaHome)
+		if (customJavaSourceVersion) {
+			options.compilerArgs += [ "--release", customJavaSourceVersion]
+			inputs.property("customJavaSourceVersion", customJavaSourceVersion)
+		}
+	}
+
+	/*
+	tasks.withType(KotlinJvmCompile) {
+		logger.info("Java home for " + it.name + " task in " + project.name + ": " + customJavaHome)
+		kotlinOptions.jdkHome = customJavaHomeDir
+		inputs.property("customJavaHome", customJavaHome)
+	}
+	*/
+
+	tasks.withType(Test) {
+		def javaExecutable = customJavaHome + "/bin/java"
+		if (OperatingSystem.current().isWindows()) {
+			javaExecutable += ".exe"
+		}
+		logger.info("Java executable for " + it.name + " task in " + project.name + ": " + javaExecutable)
+		executable = javaExecutable
+		inputs.property("customJavaHome", customJavaHome)
+		if (customJavaSourceVersion) {
+			inputs.property("customJavaSourceVersion", customJavaSourceVersion)
+		}
+	}
+
+}
@@ -1,30 +0,0 @@
-tasks.findByName("dokkaHtmlPartial")?.configure {
-    outputDirectory.set(new File(buildDir, "docs/kdoc"))
-    dokkaSourceSets {
-        configureEach {
-			sourceRoots.setFrom(file("src/main/kotlin"))
-			classpath.from(sourceSets["main"].runtimeClasspath)
-			externalDocumentationLink {
-				url.set(new URL("https://docs.spring.io/spring-framework/docs/current/javadoc-api/"))
-			}
-			externalDocumentationLink {
-				url.set(new URL("https://projectreactor.io/docs/core/release/api/"))
-			}
-			externalDocumentationLink {
-				url.set(new URL("https://www.reactive-streams.org/reactive-streams-1.0.3-javadoc/"))
-			}
-			externalDocumentationLink {
-				url.set(new URL("https://kotlin.github.io/kotlinx.coroutines/"))
-			}
-			externalDocumentationLink {
-				url.set(new URL("https://hamcrest.org/JavaHamcrest/javadoc/2.1/"))
-			}
-			externalDocumentationLink {
-				url.set(new URL("https://javadoc.io/doc/javax.servlet/javax.servlet-api/latest/"))
-			}
-			externalDocumentationLink {
-				url.set(new URL("https://javadoc.io/static/io.rsocket/rsocket-core/1.1.1/"))
-			}
-		}
-    }
-}
@@ -3,7 +3,7 @@ configurations {
 }

 dependencies {
-	asciidoctorExt("io.spring.asciidoctor:spring-asciidoctor-extensions-block-switch:0.5.0")
+	asciidoctorExt("io.spring.asciidoctor:spring-asciidoctor-extensions-block-switch:0.4.3.RELEASE")
 }

 repositories {
@@ -61,18 +61,59 @@ task api(type: Javadoc) {
 /**
 * Produce KDoc for all Spring Framework modules in "build/docs/kdoc"
 */
-pluginManager.withPlugin("kotlin") {
-	tasks.dokkaHtmlMultiModule.configure {
-		dependsOn {
-			tasks.getByName("api")
+dokka {
+	dependsOn {
+		tasks.getByName("api")
+	}
+
+	doFirst {
+		configuration {
+			classpath = moduleProjects.collect { project -> project.jar.outputs.files.getFiles() }.flatten()
+			classpath += files(moduleProjects.collect { it.sourceSets.main.compileClasspath })
+
+			moduleProjects.findAll {
+				it.pluginManager.hasPlugin("kotlin")
+			}.each { project ->
+				def kotlinDirs = project.sourceSets.main.kotlin.srcDirs.collect()
+				kotlinDirs -= project.sourceSets.main.java.srcDirs
+				kotlinDirs.each { dir ->
+					if (dir.exists()) {
+						sourceRoot {
+							path = dir.path
+						}
+					}
+				}
+			}
+		}
+	}
+
+	outputFormat = "html"
+	outputDirectory = "$buildDir/docs/kdoc"
+
+	configuration {
+		moduleName = "spring-framework"
+
+		externalDocumentationLink {
+			url = new URL("https://docs.spring.io/spring-framework/docs/$version/javadoc-api/")
+			packageListUrl = new File(buildDir, "docs/javadoc/package-list").toURI().toURL()
+		}
+		externalDocumentationLink {
+			url = new URL("https://projectreactor.io/docs/core/release/api/")
+		}
+		externalDocumentationLink {
+			url = new URL("https://www.reactive-streams.org/reactive-streams-1.0.1-javadoc/")
+		}
+		externalDocumentationLink {
+			url = new URL("https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/")
+		}
+		externalDocumentationLink {
+			url = new URL("https://r2dbc.io/spec/0.8.3.RELEASE/api/")
 		}
-		moduleName.set("spring-framework")
-		outputDirectory.set(project.file("$buildDir/docs/kdoc"))
 	}
 }

 task downloadResources(type: Download) {
-	def version = "0.2.5"
+	def version = "0.2.2.RELEASE"
 	src "https://repo.spring.io/release/io/spring/docresources/" +
 			"spring-doc-resources/$version/spring-doc-resources-${version}.zip"
 	dest project.file("$buildDir/docs/spring-doc-resources.zip")
@@ -86,8 +127,6 @@ task extractDocResources(type: Copy, dependsOn: downloadResources) {
 }

 asciidoctorj {
-	def docRoot = 'https://docs.spring.io'
-	def docsSpringFramework = "${docRoot}/spring-framework/docs/${project.version}"
 	version = '2.4.1'
 	fatalWarnings ".*"
 	options doctype: 'book', eruby: 'erubis'
@@ -95,7 +134,7 @@ asciidoctorj {
 			icons: 'font',
 			idprefix: '',
 			idseparator: '-',
-			docinfo: 'shared,private-header', // https://docs.asciidoctor.org/asciidoctor/latest/docinfo/
+			docinfo: 'shared',
 			revnumber: project.version,
 			sectanchors: '',
 			sectnums: '',
@@ -104,11 +143,7 @@ asciidoctorj {
 			'highlightjs-theme': 'googlecode',
 			stylesdir: 'css/',
 			stylesheet: 'stylesheet.css',
-			'spring-version': project.version,
-			'spring-framework-main-code': 'https://github.com/spring-projects/spring-framework/tree/main',
-			'doc-root': docRoot,
-			'docs-spring-framework': docsSpringFramework,
-			'api-spring-framework': "${docsSpringFramework}/javadoc-api/org/springframework"
+			'spring-version': project.version
 	])
 }

@@ -149,7 +184,7 @@ asciidoctorPdf {
 /**
 * Zip all docs (API and reference) into a single archive
 */
-task docsZip(type: Zip, dependsOn: ['api', 'asciidoctor', 'asciidoctorPdf', 'dokkaHtmlMultiModule']) {
+task docsZip(type: Zip, dependsOn: ['api', 'asciidoctor', 'asciidoctorPdf', 'dokka']) {
 	group = "Distribution"
 	description = "Builds -${archiveClassifier} archive containing api and reference " +
 			"for deployment at https://docs.spring.io/spring-framework/docs."
@@ -168,7 +203,7 @@ task docsZip(type: Zip, dependsOn: ['api', 'asciidoctor', 'asciidoctorPdf', 'dok
 	from ("$asciidoctorPdf.outputDir") {
 		into "reference/pdf"
 	}
-	from (dokkaHtmlMultiModule.outputDirectory) {
+	from (dokka) {
 		into "kdoc-api"
 	}
 }
@@ -225,11 +260,11 @@ task distZip(type: Zip, dependsOn: [docsZip, schemaZip]) {
 		expand(copyright: new Date().format("yyyy"), version: project.version)
 	}

-	from(zipTree(docsZip.archiveFile)) {
+	from(zipTree(docsZip.archivePath)) {
 		into "${baseDir}/docs"
 	}

-	from(zipTree(schemaZip.archiveFile)) {
+	from(zipTree(schemaZip.archivePath)) {
 		into "${baseDir}/schema"
 	}

@@ -1,7 +1,7 @@
 import org.gradle.plugins.ide.eclipse.model.ProjectDependency
 import org.gradle.plugins.ide.eclipse.model.SourceFolder

-apply plugin: 'eclipse'
+apply plugin: "eclipse"

 eclipse.jdt {
 	sourceCompatibility = 1.8
@@ -18,93 +18,103 @@ eclipse.classpath.file.whenMerged { classpath ->
 		if (matcher) {
 			def projectName = matcher[0][1]
 			def path = "/${projectName}"
-			if (!classpath.entries.find { e -> e instanceof ProjectDependency && e.path == path }) {
-				def recursiveDependency = entry.path.matches('.+/' + projectName + '/build/([^/]+/)+(?:main|test)')
-				// Avoid recursive dependency on current project.
-				if (!recursiveDependency) {
-					classpath.entries.add(new ProjectDependency(path))
-				}
+			if(!classpath.entries.find { e -> e instanceof ProjectDependency && e.path == path }) {
+				def dependency = new ProjectDependency(path)
+				dependency.exported = true
+				classpath.entries.add(dependency)
 			}
 			classpath.entries.remove(entry)
 		}
 	}
-
-	// Remove any remaining direct depencencies on JARs in the build/libs folder
-	// except Spring's spring-cglib-repack and spring-objenesis-repack JARs.
 	classpath.entries.removeAll { entry -> (entry.path =~ /(?!.*?repack.*\.jar).*?\/([^\/]+)\/build\/libs\/[^\/]+\.jar/) }
 }

+
 // Use separate main/test outputs (prevents WTP from packaging test classes)
-eclipse.classpath.defaultOutputDir = file(project.name + '/bin/eclipse')
+eclipse.classpath.defaultOutputDir = file(project.name+"/bin/eclipse")
 eclipse.classpath.file.beforeMerged { classpath ->
 	classpath.entries.findAll{ it instanceof SourceFolder }.each {
-		if (it.output.startsWith('bin/')) {
+		if(it.output.startsWith("bin/")) {
 			it.output = null
 		}
 	}
 }
-eclipse.classpath.file.whenMerged {
-	entries.findAll{ it instanceof SourceFolder }.each {
-		it.output = 'bin/' + it.path.split('/')[1]
+eclipse.classpath.file.whenMerged { classpath ->
+	classpath.entries.findAll{ it instanceof SourceFolder }.each {
+		it.output = "bin/" + it.path.split("/")[1]
 	}
 }

 // Ensure project dependencies come after 3rd-party libs (SPR-11836)
 // https://jira.spring.io/browse/SPR-11836
-eclipse.classpath.file.whenMerged {
-	entries.findAll { it instanceof ProjectDependency }.each {
+eclipse.classpath.file.whenMerged { classpath ->
+	classpath.entries.findAll { it instanceof ProjectDependency }.each {
 		// delete from original position
-		entries.remove(it)
+		classpath.entries.remove(it)
 		// append to end of classpath
-		entries.add(it)
-	}
-}
-
-// Ensure that JMH sources and resources are treated as test classpath entries
-// so that they can see test fixtures.
-// https://github.com/melix/jmh-gradle-plugin/issues/157
-eclipse.classpath.file.whenMerged {
-	entries.findAll { it.path =~ /src\/jmh\/(java|resources)/ }.each {
-		it.entryAttributes['test'] = 'true'
+		classpath.entries.add(it)
 	}
 }

 // Allow projects to be used as WTP modules
-eclipse.project.natures 'org.eclipse.wst.common.project.facet.core.nature'
+eclipse.project.natures "org.eclipse.wst.common.project.facet.core.nature"

 // Include project specific settings
 task eclipseSettings(type: Copy) {
 	from rootProject.files(
-		'src/eclipse/org.eclipse.jdt.ui.prefs',
-		'src/eclipse/org.eclipse.wst.common.project.facet.core.xml')
+		"src/eclipse/org.eclipse.jdt.ui.prefs",
+		"src/eclipse/org.eclipse.wst.common.project.facet.core.xml")
 	into project.file('.settings/')
 	outputs.upToDateWhen { false }
 }

-task eclipseJdtSettings(type: Copy) {
-	from rootProject.file('src/eclipse/org.eclipse.jdt.core.prefs')
-	into project.file('.settings/')
-	outputs.upToDateWhen { false }
-}
-
-task eclipseBuildship {
-	dependsOn eclipseSettings, eclipseJdtSettings
-}
-
-task eclipseWstComponentSettings(type: Copy) {
-	from rootProject.files('src/eclipse/org.eclipse.wst.common.component')
+task eclipseWstComponent(type: Copy) {
+	from rootProject.files(
+		"src/eclipse/org.eclipse.wst.common.component")
 	into project.file('.settings/')
 	expand(deployname: project.name)
 	outputs.upToDateWhen { false }
 }

-task cleanEclipseSettings(type: Delete) {
-	delete project.file('.settings/org.eclipse.jdt.core.prefs')
-	delete project.file('.settings/org.eclipse.jdt.ui.prefs')
-	delete project.file('.settings/org.eclipse.wst.common.component')
-	delete project.file('.settings/org.eclipse.wst.common.project.facet.core.xml')
+task eclipseJdtPrepare(type: Copy) {
+	from rootProject.file("src/eclipse/org.eclipse.jdt.core.prefs")
+	into project.file(".settings/")
+	outputs.upToDateWhen { false }
 }

-tasks['eclipse'].dependsOn(eclipseSettings, eclipseJdtSettings, eclipseWstComponentSettings)
-tasks['eclipseJdt'].dependsOn(eclipseJdtSettings)
-tasks['cleanEclipse'].dependsOn(cleanEclipseSettings)
+task cleanEclipseJdtUi(type: Delete) {
+	delete project.file(".settings/org.eclipse.jdt.core.prefs")
+	delete project.file(".settings/org.eclipse.jdt.ui.prefs")
+	delete project.file(".settings/org.eclipse.wst.common.component")
+	delete project.file(".settings/org.eclipse.wst.common.project.facet.core.xml")
+}
+
+task eclipseBuildship(type: Copy) {
+	from rootProject.files(
+		"src/eclipse/org.eclipse.jdt.ui.prefs",
+		"src/eclipse/org.eclipse.jdt.core.prefs")
+	into project.file('.settings/')
+	outputs.upToDateWhen { false }
+}
+
+tasks["eclipseJdt"].dependsOn(eclipseJdtPrepare)
+tasks["cleanEclipse"].dependsOn(cleanEclipseJdtUi)
+tasks["eclipse"].dependsOn(eclipseSettings, eclipseWstComponent)
+
+
+// Filter 'build' folder
+eclipse.project.file.withXml {
+	def node = it.asNode()
+
+	def filteredResources = node.get("filteredResources")
+	if(filteredResources) {
+		node.remove(filteredResources)
+	}
+	def filterNode = node.appendNode("filteredResources").appendNode("filter")
+	filterNode.appendNode("id", "1359048889071")
+	filterNode.appendNode("name", "")
+	filterNode.appendNode("type", "30")
+	def matcherNode = filterNode.appendNode("matcher")
+	matcherNode.appendNode("id", "org.eclipse.ui.ide.multiFilter")
+	matcherNode.appendNode("arguments", "1.0-projectRelativePath-matches-false-false-build")
+}
@@ -1,42 +1,17 @@
-apply plugin: 'java-library'
 apply plugin: 'org.springframework.build.compile'
 apply plugin: 'org.springframework.build.optional-dependencies'
-// Uncomment the following for Shadow support in the jmhJar block.
-// Currently commented out due to ZipException: archive is not a ZIP archive
-// apply plugin: 'com.github.johnrengelman.shadow'
-apply plugin: 'me.champeau.jmh'
+apply plugin: 'me.champeau.gradle.jmh'
 apply from: "$rootDir/gradle/publications.gradle"

 dependencies {
-	jmh 'org.openjdk.jmh:jmh-core:1.32'
-	jmh 'org.openjdk.jmh:jmh-generator-annprocess:1.32'
-	jmh 'net.sf.jopt-simple:jopt-simple'
+	jmh 'org.openjdk.jmh:jmh-core:1.23'
+	jmh 'org.openjdk.jmh:jmh-generator-annprocess:1.23'
+	jmh 'net.sf.jopt-simple:jopt-simple:4.6'
 }
-
 jmh {
 	duplicateClassesStrategy = DuplicatesStrategy.EXCLUDE
 }

-tasks.findByName("processJmhResources").configure {
-	duplicatesStrategy = DuplicatesStrategy.EXCLUDE
-}
-
-jmhJar {
-	// Uncomment the following for Shadow's Transformer support.
-	// mergeServiceFiles()
-	// append('META-INF/spring.handlers')
-	// append('META-INF/spring.schemas')
-	// append('META-INF/spring.tooling')
-	exclude 'LICENSE'
-	exclude 'THIRD-PARTY'
-	exclude 'META-INF/license.txt'
-	exclude 'META-INF/notice.txt'
-	exclude 'META-INF/DEPENDENCIES'
-	exclude 'META-INF/LICENSE*'
-	exclude 'META-INF/NOTICE'
-	exclude 'META-INF/THIRD-PARTY'
-}
-
 jar {
 	manifest.attributes["Implementation-Title"] = project.name
 	manifest.attributes["Implementation-Version"] = project.version
@@ -1,182 +0,0 @@
-/**
- * Apply the JVM Toolchain conventions
- * See https://docs.gradle.org/current/userguide/toolchains.html
- *
- * One can choose the toolchain to use for compiling the MAIN sources and/or compiling
- * and running the TEST sources. These options apply to Java, Kotlin and Groovy sources
- * when available.
- * {@code "./gradlew check -PmainToolchain=8 -PtestToolchain=11"} will use:
- * <ul>
- *     <li>a JDK8 toolchain for compiling the main SourceSet
- *     <li>a JDK11 toolchain for compiling and running the test SourceSet
- * </ul>
- *
- * By default, the build will fall back to using the current JDK and 1.8 language level for all sourceSets.
- *
- * Gradle will automatically detect JDK distributions in well-known locations.
- * The following command will list the detected JDKs on the host.
- * {@code
- * $ ./gradlew -q javaToolchains
- * }
- *
- * We can also configure ENV variables and let Gradle know about them:
- * {@code
- * $ echo JDK11
- * /opt/openjdk/java11
- * $ echo JDK15
- * /opt/openjdk/java15
- * $ ./gradlew -Porg.gradle.java.installations.fromEnv=JDK11,JDK15 check
- * }
- *
- * @author Brian Clozel
- * @author Sam Brannen
- */
-
-def mainToolchainConfigured() {
-	return project.hasProperty('mainToolchain') && project.mainToolchain
-}
-
-def testToolchainConfigured() {
-	return project.hasProperty('testToolchain') && project.testToolchain
-}
-
-def mainToolchainLanguageVersion() {
-	if (mainToolchainConfigured()) {
-		return JavaLanguageVersion.of(project.mainToolchain.toString())
-	}
-	return JavaLanguageVersion.of(8)
-}
-
-def testToolchainLanguageVersion() {
-	if (testToolchainConfigured()) {
-		return JavaLanguageVersion.of(project.testToolchain.toString())
-	}
-	return mainToolchainLanguageVersion()
-}
-
-plugins.withType(JavaPlugin) {
-	// Configure the Java Toolchain if the 'mainToolchain' is configured
-	if (mainToolchainConfigured()) {
-		java {
-			toolchain {
-				languageVersion = mainToolchainLanguageVersion()
-			}
-		}
-	}
-	else {
-		// Fallback to JDK8
-		java {
-			sourceCompatibility = JavaVersion.VERSION_1_8
-		}
-	}
-	// Configure a specific Java Toolchain for compiling and running tests if the 'testToolchain' property is defined
-	if (testToolchainConfigured()) {
-		def testLanguageVersion = testToolchainLanguageVersion()
-		tasks.withType(JavaCompile).matching { it.name.contains("Test") }.configureEach {
-			javaCompiler = javaToolchains.compilerFor {
-				languageVersion = testLanguageVersion
-			}
-		}
-		tasks.withType(Test).configureEach{
-			javaLauncher = javaToolchains.launcherFor {
-				languageVersion = testLanguageVersion
-			}
-		}
-	}
-}
-
-plugins.withType(GroovyPlugin) {
-	// Fallback to JDK8
-	if (!mainToolchainConfigured()) {
-		compileGroovy {
-			sourceCompatibility = JavaVersion.VERSION_1_8
-		}
-	}
-}
-
-pluginManager.withPlugin("kotlin") {
-	// Configure the Kotlin compiler if the 'mainToolchain' property is defined
-	if (mainToolchainConfigured()) {
-		def mainLanguageVersion = mainToolchainLanguageVersion()
-		def compiler = javaToolchains.compilerFor {
-			languageVersion = mainLanguageVersion
-		}
-		// See https://kotlinlang.org/docs/gradle.html#attributes-specific-for-jvm
-		def javaVersion = mainLanguageVersion.toString() == '8' ? '1.8' : mainLanguageVersion.toString()
-		compileKotlin {
-			kotlinOptions {
-				jvmTarget = javaVersion
-				jdkHome = compiler.get().metadata.installationPath.asFile.absolutePath
-			}
-		}
-		// Compile the test classes with the same version, 'testToolchain' will override if defined
-		compileTestKotlin {
-			kotlinOptions {
-				jvmTarget = javaVersion
-				jdkHome = compiler.get().metadata.installationPath.asFile.absolutePath
-			}
-		}
-	}
-	else {
-		// Fallback to JDK8
-		compileKotlin {
-			kotlinOptions {
-				jvmTarget = '1.8'
-			}
-		}
-		compileTestKotlin {
-			kotlinOptions {
-				jvmTarget = '1.8'
-			}
-		}
-	}
-
-	if (testToolchainConfigured()) {
-		def testLanguageVersion = testToolchainLanguageVersion()
-		def compiler = javaToolchains.compilerFor {
-			languageVersion = testLanguageVersion
-		}
-		// See https://kotlinlang.org/docs/gradle.html#attributes-specific-for-jvm
-		def javaVersion = testLanguageVersion.toString() == '8' ? '1.8' : testLanguageVersion.toString()
-		compileTestKotlin {
-			kotlinOptions {
-				jvmTarget = javaVersion
-				jdkHome = compiler.get().metadata.installationPath.asFile.absolutePath
-			}
-		}
-	}
-}
-
-// Configure the JMH plugin to use the toolchain for generating and running JMH bytecode
-pluginManager.withPlugin("me.champeau.jmh") {
-	if (mainToolchainConfigured() || testToolchainConfigured()) {
-		tasks.matching { it.name.contains('jmh') && it.hasProperty('javaLauncher') }.configureEach {
-			javaLauncher.set(javaToolchains.launcherFor {
-				languageVersion.set(testToolchainLanguageVersion())
-			})
-		}
-		tasks.withType(JavaCompile).matching { it.name.contains("Jmh") }.configureEach {
-			javaCompiler = javaToolchains.compilerFor {
-				languageVersion = testToolchainLanguageVersion()
-			}
-		}
-	}
-}
-
-// Store resolved Toolchain JVM information as custom values in the build scan.
-rootProject.ext {
-	resolvedMainToolchain = false
-	resolvedTestToolchain = false
-}
-gradle.taskGraph.afterTask { Task task, TaskState state ->
-	if (mainToolchainConfigured() && !resolvedMainToolchain && task instanceof JavaCompile && task.javaCompiler.isPresent()) {
-		def metadata = task.javaCompiler.get().metadata
-		task.project.buildScan.value('Main toolchain', "$metadata.vendor $metadata.languageVersion ($metadata.installationPath)")
-		resolvedMainToolchain = true
-	}
-	if (testToolchainConfigured() && !resolvedTestToolchain && task instanceof Test && task.javaLauncher.isPresent()) {
-		def metadata = task.javaLauncher.get().metadata
-		task.project.buildScan.value('Test toolchain', "$metadata.vendor $metadata.languageVersion ($metadata.installationPath)")
-		resolvedTestToolchain = true
-	}
-}
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
@@ -1,7 +1,7 @@
-#!/bin/sh
+#!/usr/bin/env sh

 #
-# Copyright © 2015-2021 the original authors.
+# Copyright 2015 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.
@@ -17,101 +17,67 @@
 #

 ##############################################################################
-#
-#   Gradle start up script for POSIX generated by Gradle.
-#
-#   Important for running:
-#
-#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
-#       noncompliant, but you have some other compliant shell such as ksh or
-#       bash, then to run this script, type that shell name before the whole
-#       command line, like:
-#
-#           ksh Gradle
-#
-#       Busybox and similar reduced shells will NOT work, because this script
-#       requires all of these POSIX shell features:
-#         * functions;
-#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
-#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
-#         * compound commands having a testable exit status, especially «case»;
-#         * various built-in commands including «command», «set», and «ulimit».
-#
-#   Important for patching:
-#
-#   (2) This script targets any POSIX shell, so it avoids extensions provided
-#       by Bash, Ksh, etc; in particular arrays are avoided.
-#
-#       The "traditional" practice of packing multiple parameters into a
-#       space-separated string is a well documented source of bugs and security
-#       problems, so this is (mostly) avoided, by progressively accumulating
-#       options in "$@", and eventually passing that to Java.
-#
-#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
-#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
-#       see the in-line comments for details.
-#
-#       There are tweaks for specific operating systems such as AIX, CygWin,
-#       Darwin, MinGW, and NonStop.
-#
-#   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
-#       within the Gradle project.
-#
-#       You can find Gradle at https://github.com/gradle/gradle/.
-#
+##
+##  Gradle start up script for UN*X
+##
 ##############################################################################

 # Attempt to set APP_HOME
-
 # Resolve links: $0 may be a link
-app_path=$0
-
-# Need this for daisy-chained symlinks.
-while
-    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
-    [ -h "$app_path" ]
-do
-    ls=$( ls -ld "$app_path" )
-    link=${ls#*' -> '}
-    case $link in             #(
-      /*)   app_path=$link ;; #(
-      *)    app_path=$APP_HOME$link ;;
-    esac
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
 done
-
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null

 APP_NAME="Gradle"
-APP_BASE_NAME=${0##*/}
+APP_BASE_NAME=`basename "$0"`

 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'

 # Use the maximum available, or set MAX_FD != -1 to use that value.
-MAX_FD=maximum
+MAX_FD="maximum"

 warn () {
    echo "$*"
-} >&2
+}

 die () {
    echo
    echo "$*"
    echo
    exit 1
-} >&2
+}

 # OS specific support (must be 'true' or 'false').
 cygwin=false
 msys=false
 darwin=false
 nonstop=false
-case "$( uname )" in                #(
-  CYGWIN* )         cygwin=true  ;; #(
-  Darwin* )         darwin=true  ;; #(
-  MSYS* | MINGW* )  msys=true    ;; #(
-  NONSTOP* )        nonstop=true ;;
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac

 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
@@ -121,9 +87,9 @@ CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 if [ -n "$JAVA_HOME" ] ; then
    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
        # IBM's JDK on AIX uses strange locations for the executables
-        JAVACMD=$JAVA_HOME/jre/sh/java
+        JAVACMD="$JAVA_HOME/jre/sh/java"
    else
-        JAVACMD=$JAVA_HOME/bin/java
+        JAVACMD="$JAVA_HOME/bin/java"
    fi
    if [ ! -x "$JAVACMD" ] ; then
        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
@@ -132,7 +98,7 @@ Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
    fi
 else
-    JAVACMD=java
+    JAVACMD="java"
    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

 Please set the JAVA_HOME variable in your environment to match the
@@ -140,95 +106,80 @@ location of your Java installation."
 fi

 # Increase the maximum file descriptors if we can.
-if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
-    case $MAX_FD in #(
-      max*)
-        MAX_FD=$( ulimit -H -n ) ||
-            warn "Could not query maximum file descriptor limit"
-    esac
-    case $MAX_FD in  #(
-      '' | soft) :;; #(
-      *)
-        ulimit -n "$MAX_FD" ||
-            warn "Could not set maximum file descriptor limit to $MAX_FD"
-    esac
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
 fi

-# Collect all arguments for the java command, stacking in reverse order:
-#   * args from the command line
-#   * the main class name
-#   * -classpath
-#   * -D...appname settings
-#   * --module-path (only if needed)
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi

 # For Cygwin or MSYS, switch paths to Windows format before running java
-if "$cygwin" || "$msys" ; then
-    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`

-    JAVACMD=$( cygpath --unix "$JAVACMD" )
+    JAVACMD=`cygpath --unix "$JAVACMD"`

-    # Now convert the arguments - kludge to limit ourselves to /bin/sh
-    for arg do
-        if
-            case $arg in                                #(
-              -*)   false ;;                            # don't mess with options #(
-              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
-                    [ -e "$t" ] ;;                      #(
-              *)    false ;;
-            esac
-        then
-            arg=$( cygpath --path --ignore --mixed "$arg" )
-        fi
-        # Roll the args list around exactly as many times as the number of
-        # args, so each arg winds up back in the position where it started, but
-        # possibly modified.
-        #
-        # NB: a `for` loop captures its iteration list before it begins, so
-        # changing the positional parameters here affects neither the number of
-        # iterations, nor the values presented in `arg`.
-        shift                   # remove old arg
-        set -- "$@" "$arg"      # push replacement arg
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
 fi

-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`

-set -- \
-        "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
-        org.gradle.wrapper.GradleWrapperMain \
-        "$@"
-
-# Use "xargs" to parse quoted args.
-#
-# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
-#
-# In Bash we could simply go:
-#
-#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
-#   set -- "${ARGS[@]}" "$@"
-#
-# but POSIX shell has neither arrays nor command substitution, so instead we
-# post-process each arg (as a line of input to sed) to backslash-escape any
-# character that might be a shell metacharacter, then use eval to reverse
-# that process (while maintaining the separation between arguments), and wrap
-# the whole thing up as a single "set" statement.
-#
-# This will of course break if any of these variables contains a newline or
-# an unmatched quote.
-#
-
-eval "set -- $(
-        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
-        xargs -n1 |
-        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
-        tr '\n' ' '
-    )" '"$@"'
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"

 exec "$JAVACMD" "$@"
@@ -1,26 +1,26 @@
 description = "Spring Integration Tests"

 dependencies {
-	testImplementation(project(":spring-aop"))
-	testImplementation(project(":spring-beans"))
-	testImplementation(project(":spring-context"))
-	testImplementation(project(":spring-core"))
-	testImplementation(testFixtures(project(":spring-aop")))
-	testImplementation(testFixtures(project(":spring-beans")))
-	testImplementation(testFixtures(project(":spring-core")))
-	testImplementation(testFixtures(project(":spring-tx")))
-	testImplementation(project(":spring-expression"))
-	testImplementation(project(":spring-jdbc"))
-	testImplementation(project(":spring-orm"))
-	testImplementation(project(":spring-test"))
-	testImplementation(project(":spring-tx"))
-	testImplementation(project(":spring-web"))
-	testImplementation("javax.inject:javax.inject")
-	testImplementation("javax.resource:javax.resource-api")
-	testImplementation("javax.servlet:javax.servlet-api")
-	testImplementation("org.aspectj:aspectjweaver")
-	testImplementation("org.hsqldb:hsqldb")
-	testImplementation("org.hibernate:hibernate-core")
+	testCompile(project(":spring-aop"))
+	testCompile(project(":spring-beans"))
+	testCompile(project(":spring-context"))
+	testCompile(project(":spring-core"))
+	testCompile(testFixtures(project(":spring-aop")))
+	testCompile(testFixtures(project(":spring-beans")))
+	testCompile(testFixtures(project(":spring-core")))
+	testCompile(testFixtures(project(":spring-tx")))
+	testCompile(project(":spring-expression"))
+	testCompile(project(":spring-jdbc"))
+	testCompile(project(":spring-orm"))
+	testCompile(project(":spring-test"))
+	testCompile(project(":spring-tx"))
+	testCompile(project(":spring-web"))
+	testCompile("javax.inject:javax.inject")
+	testCompile("javax.resource:javax.resource-api")
+	testCompile("javax.servlet:javax.servlet-api")
+	testCompile("org.aspectj:aspectjweaver")
+	testCompile("org.hsqldb:hsqldb")
+	testCompile("org.hibernate:hibernate-core")
 }

 normalization {
@@ -1,13 +1,13 @@
 pluginManagement {
 	repositories {
 		gradlePluginPortal()
-		maven { url "https://repo.spring.io/plugins-release" }
+		maven { url 'https://repo.spring.io/plugins-release' }
 	}
 }

 plugins {
-	id "com.gradle.enterprise" version "3.6.1"
-	id "io.spring.ge.conventions" version "0.0.7"
+	id "com.gradle.enterprise" version "3.2"
+	id "io.spring.gradle-enterprise-conventions" version "0.0.2"
 }

 include "spring-aop"
@@ -17,6 +17,8 @@ include "spring-context"
 include "spring-context-indexer"
 include "spring-context-support"
 include "spring-core"
+include "kotlin-coroutines"
+project(':kotlin-coroutines').projectDir = file('spring-core/kotlin-coroutines')
 include "spring-expression"
 include "spring-instrument"
 include "spring-jcl"
@@ -43,13 +45,19 @@ rootProject.children.each {project ->
 settings.gradle.projectsLoaded {
 	gradleEnterprise {
 		buildScan {
+			if (settings.gradle.rootProject.hasProperty('customJavaHome')) {
+				value("Custom JAVA_HOME", settings.gradle.rootProject.getProperty('customJavaHome'))
+			}
+			if (settings.gradle.rootProject.hasProperty('customJavaSourceVersion')) {
+				value("Custom Java Source Version", settings.gradle.rootProject.getProperty('customJavaSourceVersion'))
+			}
 			File buildDir = settings.gradle.rootProject.getBuildDir()
 			buildDir.mkdirs()
 			new File(buildDir, "build-scan-uri.txt").text = "(build scan not generated)"
 			buildScanPublished { scan ->
 				if (buildDir.exists()) {
 					new File(buildDir, "build-scan-uri.txt").text = "${scan.buildScanUri}\n"
-				}
+				} 
 			}
 		}
 	}
@@ -1,13 +1,12 @@
 description = "Spring AOP"

 dependencies {
-	api(project(":spring-beans"))
-	api(project(":spring-core"))
+	compile(project(":spring-beans"))
+	compile(project(":spring-core"))
 	optional("org.aspectj:aspectjweaver")
 	optional("org.apache.commons:commons-pool2")
 	optional("com.jamonapi:jamon")
-	testImplementation(testFixtures(project(":spring-beans")))
-	testImplementation(testFixtures(project(":spring-core")))
-	testFixturesImplementation(testFixtures(project(":spring-beans")))
+	testCompile(testFixtures(project(":spring-beans")))
+	testCompile(testFixtures(project(":spring-core")))
 	testFixturesImplementation(testFixtures(project(":spring-core")))
 }
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -26,7 +26,7 @@ import javax.annotation.Nullable;
 * terminology).
 *
 * <p>A runtime joinpoint is an <i>event</i> that occurs on a static
- * joinpoint (i.e. a location in a program). For instance, an
+ * joinpoint (i.e. a location in a the program). For instance, an
 * invocation is the runtime joinpoint on a method (static joinpoint).
 * The static part of a given joinpoint can be generically retrieved
 * using the {@link #getStaticPart()} method.
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2012 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.
@@ -26,7 +26,7 @@ import org.aopalliance.aop.Advice;
 * <p>Introductions are often <b>mixins</b>, enabling the building of composite
 * objects that can achieve many of the goals of multiple inheritance in Java.
 *
- * <p>Compared to {@link IntroductionInfo}, this interface allows an advice to
+ * <p>Compared to {qlink IntroductionInfo}, this interface allows an advice to
 * implement a range of interfaces that is not necessarily known in advance.
 * Thus an {@link IntroductionAdvisor} can be used to specify which interfaces
 * will be exposed in an advised object.
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -350,8 +350,17 @@ public abstract class AbstractAspectJAdvice implements Advice, AspectJPrecedence
 		return this.discoveredThrowingType;
 	}

-	private static boolean isVariableName(String name) {
-		return AspectJProxyUtils.isVariableName(name);
+	private boolean isVariableName(String name) {
+		char[] chars = name.toCharArray();
+		if (!Character.isJavaIdentifierStart(chars[0])) {
+			return false;
+		}
+		for (int i = 1; i < chars.length; i++) {
+			if (!Character.isJavaIdentifierPart(chars[i])) {
+				return false;
+			}
+		}
+		return true;
 	}


@@ -631,6 +640,7 @@ public abstract class AbstractAspectJAdvice implements Advice, AspectJPrecedence
 		}
 		try {
 			ReflectionUtils.makeAccessible(this.aspectJAdviceMethod);
+			// TODO AopUtils.invokeJoinpointUsingReflection
 			return this.aspectJAdviceMethod.invoke(this.aspectInstanceFactory.getAspectInstance(), actualArgs);
 		}
 		catch (IllegalArgumentException ex) {
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -470,10 +470,22 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 	 */
 	@Nullable
 	private String maybeExtractVariableName(@Nullable String candidateToken) {
-		if (AspectJProxyUtils.isVariableName(candidateToken)) {
+		if (!StringUtils.hasLength(candidateToken)) {
+			return null;
+		}
+		if (Character.isJavaIdentifierStart(candidateToken.charAt(0)) &&
+				Character.isLowerCase(candidateToken.charAt(0))) {
+			char[] tokenChars = candidateToken.toCharArray();
+			for (char tokenChar : tokenChars) {
+				if (!Character.isJavaIdentifierPart(tokenChar)) {
+					return null;
+				}
+			}
 			return candidateToken;
 		}
-		return null;
+		else {
+			return null;
+		}
 	}

 	/**
@@ -625,7 +637,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 			StringBuilder sb = new StringBuilder();
 			if (bodyStart >= 0 && bodyStart != (currentToken.length() - 1)) {
 				sb.append(currentToken.substring(bodyStart + 1));
-				sb.append(' ');
+				sb.append(" ");
 			}
 			numTokensConsumed++;
 			int currentIndex = startIndex + numTokensConsumed;
@@ -645,7 +657,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 					toAppend = toAppend.substring(1);
 				}
 				sb.append(toAppend);
-				sb.append(' ');
+				sb.append(" ");
 				currentIndex++;
 				numTokensConsumed++;
 			}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -547,7 +547,7 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 		StringBuilder sb = new StringBuilder("AspectJExpressionPointcut: (");
 		for (int i = 0; i < this.pointcutParameterTypes.length; i++) {
 			sb.append(this.pointcutParameterTypes[i].getName());
-			sb.append(' ');
+			sb.append(" ");
 			sb.append(this.pointcutParameterNames[i]);
 			if ((i+1) < this.pointcutParameterTypes.length) {
 				sb.append(", ");
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -21,8 +21,6 @@ import java.util.List;
 import org.springframework.aop.Advisor;
 import org.springframework.aop.PointcutAdvisor;
 import org.springframework.aop.interceptor.ExposeInvocationInterceptor;
-import org.springframework.lang.Nullable;
-import org.springframework.util.StringUtils;

 /**
 * Utility methods for working with AspectJ proxies.
@@ -75,19 +73,4 @@ public abstract class AspectJProxyUtils {
 						((PointcutAdvisor) advisor).getPointcut() instanceof AspectJExpressionPointcut));
 	}

-	static boolean isVariableName(@Nullable String name) {
-		if (!StringUtils.hasLength(name)) {
-			return false;
-		}
-		if (!Character.isJavaIdentifierStart(name.charAt(0))) {
-			return false;
-		}
-		for (int i = 1; i < name.length(); i++) {
-			if (!Character.isJavaIdentifierPart(name.charAt(i))) {
-				return false;
-			}
-		}
-		return true;
-	}
-
 }
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -221,12 +221,10 @@ public class MethodInvocationProceedingJoinPoint implements ProceedingJoinPoint,
 		@Override
 		@Nullable
 		public String[] getParameterNames() {
-			String[] parameterNames = this.parameterNames;
-			if (parameterNames == null) {
-				parameterNames = parameterNameDiscoverer.getParameterNames(getMethod());
-				this.parameterNames = parameterNames;
+			if (this.parameterNames == null) {
+				this.parameterNames = parameterNameDiscoverer.getParameterNames(getMethod());
 			}
-			return parameterNames;
+			return this.parameterNames;
 		}

 		@Override
@@ -255,19 +253,19 @@ public class MethodInvocationProceedingJoinPoint implements ProceedingJoinPoint,
 			StringBuilder sb = new StringBuilder();
 			if (includeModifier) {
 				sb.append(Modifier.toString(getModifiers()));
-				sb.append(' ');
+				sb.append(" ");
 			}
 			if (includeReturnTypeAndArgs) {
 				appendType(sb, getReturnType(), useLongReturnAndArgumentTypeName);
-				sb.append(' ');
+				sb.append(" ");
 			}
 			appendType(sb, getDeclaringType(), useLongTypeName);
-			sb.append('.');
+			sb.append(".");
 			sb.append(getMethod().getName());
-			sb.append('(');
+			sb.append("(");
 			Class<?>[] parametersTypes = getParameterTypes();
 			appendTypes(sb, parametersTypes, includeReturnTypeAndArgs, useLongReturnAndArgumentTypeName);
-			sb.append(')');
+			sb.append(")");
 			return sb.toString();
 		}

@@ -278,7 +276,7 @@ public class MethodInvocationProceedingJoinPoint implements ProceedingJoinPoint,
 				for (int size = types.length, i = 0; i < size; i++) {
 					appendType(sb, types[i], useLongReturnAndArgumentTypeName);
 					if (i < size - 1) {
-						sb.append(',');
+						sb.append(",");
 					}
 				}
 			}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -103,11 +103,10 @@ public abstract class AbstractAspectJAdvisorFactory implements AspectJAdvisorFac
 	@Override
 	public void validate(Class<?> aspectClass) throws AopConfigException {
 		// If the parent has the annotation and isn't abstract it's an error
-		Class<?> superclass = aspectClass.getSuperclass();
-		if (superclass.getAnnotation(Aspect.class) != null &&
-				!Modifier.isAbstract(superclass.getModifiers())) {
+		if (aspectClass.getSuperclass().getAnnotation(Aspect.class) != null &&
+				!Modifier.isAbstract(aspectClass.getSuperclass().getModifiers())) {
 			throw new AopConfigException("[" + aspectClass.getName() + "] cannot extend concrete aspect [" +
-					superclass.getName() + "]");
+					aspectClass.getSuperclass().getName() + "]");
 		}

 		AjType<?> ajType = AjTypeSystem.getAjType(aspectClass);
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -160,12 +160,23 @@ public class AspectJProxyFactory extends ProxyCreatorSupport {
 	}

 	/**
-	 * Get the singleton aspect instance for the supplied aspect type.
-	 * An instance is created if one cannot be found in the instance cache.
+	 * Get the singleton aspect instance for the supplied aspect type. An instance
+	 * is created if one cannot be found in the instance cache.
 	 */
 	private Object getSingletonAspectInstance(Class<?> aspectClass) {
-		return aspectCache.computeIfAbsent(aspectClass,
-				clazz -> new SimpleAspectInstanceFactory(clazz).getAspectInstance());
+		// Quick check without a lock...
+		Object instance = aspectCache.get(aspectClass);
+		if (instance == null) {
+			synchronized (aspectCache) {
+				// To be safe, check within full lock now...
+				instance = aspectCache.get(aspectClass);
+				if (instance == null) {
+					instance = new SimpleAspectInstanceFactory(aspectClass).getAspectInstance();
+					aspectCache.put(aspectClass, instance);
+				}
+			}
+		}
+		return instance;
 	}


@@ -51,7 +51,6 @@ import org.springframework.core.convert.converter.Converter;
 import org.springframework.core.convert.converter.ConvertingComparator;
 import org.springframework.lang.Nullable;
 import org.springframework.util.ReflectionUtils;
-import org.springframework.util.ReflectionUtils.MethodFilter;
 import org.springframework.util.StringUtils;
 import org.springframework.util.comparator.InstanceComparator;

@@ -71,11 +70,7 @@ import org.springframework.util.comparator.InstanceComparator;
@SuppressWarnings("serial")
 public class ReflectiveAspectJAdvisorFactory extends AbstractAspectJAdvisorFactory implements Serializable {

-	// Exclude @Pointcut methods
-	private static final MethodFilter adviceMethodFilter = ReflectionUtils.USER_DECLARED_METHODS
-			.and(method -> (AnnotationUtils.getAnnotation(method, Pointcut.class) == null));
-
-	private static final Comparator<Method> adviceMethodComparator;
+	private static final Comparator<Method> METHOD_COMPARATOR;

 	static {
 		// Note: although @After is ordered before @AfterReturning and @AfterThrowing,
@@ -91,7 +86,7 @@ public class ReflectiveAspectJAdvisorFactory extends AbstractAspectJAdvisorFacto
 					return (ann != null ? ann.getAnnotation() : null);
 				});
 		Comparator<Method> methodNameComparator = new ConvertingComparator<>(Method::getName);
-		adviceMethodComparator = adviceKindComparator.thenComparing(methodNameComparator);
+		METHOD_COMPARATOR = adviceKindComparator.thenComparing(methodNameComparator);
 	}


@@ -165,10 +160,15 @@ public class ReflectiveAspectJAdvisorFactory extends AbstractAspectJAdvisorFacto
 	}

 	private List<Method> getAdvisorMethods(Class<?> aspectClass) {
-		List<Method> methods = new ArrayList<>();
-		ReflectionUtils.doWithMethods(aspectClass, methods::add, adviceMethodFilter);
+		final List<Method> methods = new ArrayList<>();
+		ReflectionUtils.doWithMethods(aspectClass, method -> {
+			// Exclude pointcuts
+			if (AnnotationUtils.getAnnotation(method, Pointcut.class) == null) {
+				methods.add(method);
+			}
+		}, ReflectionUtils.USER_DECLARED_METHODS);
 		if (methods.size() > 1) {
-			methods.sort(adviceMethodComparator);
+			methods.sort(METHOD_COMPARATOR);
 		}
 		return methods;
 	}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -22,7 +22,6 @@ import java.util.concurrent.ConcurrentHashMap;
 import org.springframework.aop.Advisor;
 import org.springframework.aop.support.AopUtils;
 import org.springframework.beans.factory.config.BeanPostProcessor;
-import org.springframework.core.SmartClassLoader;
 import org.springframework.lang.Nullable;

 /**
@@ -90,13 +89,7 @@ public abstract class AbstractAdvisingBeanPostProcessor extends ProxyProcessorSu
 			}
 			proxyFactory.addAdvisor(this.advisor);
 			customizeProxyFactory(proxyFactory);
-
-			// Use original ClassLoader if bean class not locally loaded in overriding class loader
-			ClassLoader classLoader = getProxyClassLoader();
-			if (classLoader instanceof SmartClassLoader && classLoader != bean.getClass().getClassLoader()) {
-				classLoader = ((SmartClassLoader) classLoader).getOriginalClassLoader();
-			}
-			return proxyFactory.getProxy(classLoader);
+			return proxyFactory.getProxy(getProxyClassLoader());
 		}

 		// No proxy needed.
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -114,15 +114,6 @@ public interface Advised extends TargetClassAware {
 	 */
 	Advisor[] getAdvisors();

-	/**
-	 * Return the number of advisors applying to this proxy.
-	 * <p>The default implementation delegates to {@code getAdvisors().length}.
-	 * @since 5.3.1
-	 */
-	default int getAdvisorCount() {
-		return getAdvisors().length;
-	}
-
 	/**
 	 * Add an advisor at the end of the advisor chain.
 	 * <p>The Advisor may be an {@link org.springframework.aop.IntroductionAdvisor},
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -95,6 +95,12 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 	 */
 	private List<Advisor> advisors = new ArrayList<>();

+	/**
+	 * Array updated on changes to the advisors list, which is easier
+	 * to manipulate internally.
+	 */
+	private Advisor[] advisorArray = new Advisor[0];
+

 	/**
 	 * No-arg constructor for use as a JavaBean.
@@ -238,12 +244,7 @@ public class AdvisedSupport extends ProxyConfig implements Advised {

 	@Override
 	public final Advisor[] getAdvisors() {
-		return this.advisors.toArray(new Advisor[0]);
-	}
-
-	@Override
-	public int getAdvisorCount() {
-		return this.advisors.size();
+		return this.advisorArray;
 	}

 	@Override
@@ -291,6 +292,7 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 			}
 		}

+		updateAdvisorArray();
 		adviceChanged();
 	}

@@ -337,6 +339,7 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 				Assert.notNull(advisor, "Advisor must not be null");
 				this.advisors.add(advisor);
 			}
+			updateAdvisorArray();
 			adviceChanged();
 		}
 	}
@@ -360,18 +363,27 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 					"Illegal position " + pos + " in advisor list with size " + this.advisors.size());
 		}
 		this.advisors.add(pos, advisor);
+		updateAdvisorArray();
 		adviceChanged();
 	}

+	/**
+	 * Bring the array up to date with the list.
+	 */
+	protected final void updateAdvisorArray() {
+		this.advisorArray = this.advisors.toArray(new Advisor[0]);
+	}
+
 	/**
 	 * Allows uncontrolled access to the {@link List} of {@link Advisor Advisors}.
-	 * <p>Use with care, and remember to {@link #adviceChanged() fire advice changed events}
-	 * when making any modifications.
+	 * <p>Use with care, and remember to {@link #updateAdvisorArray() refresh the advisor array}
+	 * and {@link #adviceChanged() fire advice changed events} when making any modifications.
 	 */
 	protected final List<Advisor> getAdvisorsInternal() {
 		return this.advisors;
 	}

+
 	@Override
 	public void addAdvice(Advice advice) throws AopConfigException {
 		int pos = this.advisors.size();
@@ -509,6 +521,7 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 			Assert.notNull(advisor, "Advisor must not be null");
 			this.advisors.add(advisor);
 		}
+		updateAdvisorArray();
 		adviceChanged();
 	}

@@ -521,8 +534,9 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 		copy.copyFrom(this);
 		copy.targetSource = EmptyTargetSource.forClass(getTargetClass(), getTargetSource().isStatic());
 		copy.advisorChainFactory = this.advisorChainFactory;
-		copy.interfaces = new ArrayList<>(this.interfaces);
-		copy.advisors = new ArrayList<>(this.advisors);
+		copy.interfaces = this.interfaces;
+		copy.advisors = this.advisors;
+		copy.updateAdvisorArray();
 		return copy;
 	}

@@ -539,6 +553,7 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 		this.methodCache = new ConcurrentHashMap<>(32);
 	}

+
 	@Override
 	public String toProxyConfigString() {
 		return toString();
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -19,9 +19,7 @@ package org.springframework.aop.framework;
 import java.lang.reflect.Array;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
-import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.List;

 import org.springframework.aop.SpringProxy;
 import org.springframework.aop.TargetClassAware;
@@ -31,9 +29,7 @@ import org.springframework.aop.target.SingletonTargetSource;
 import org.springframework.core.DecoratingProxy;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
-import org.springframework.util.ClassUtils;
 import org.springframework.util.ObjectUtils;
-import org.springframework.util.ReflectionUtils;

 /**
 * Utility methods for AOP proxy factories.
@@ -48,11 +44,6 @@ import org.springframework.util.ReflectionUtils;
 */
 public abstract class AopProxyUtils {

-	// JDK 17 Class.isSealed() method available?
-	@Nullable
-	private static final Method isSealedMethod = ClassUtils.getMethodIfAvailable(Class.class, "isSealed");
-
-
 	/**
 	 * Obtain the singleton target object behind the given proxy, if any.
 	 * @param candidate the (potential) proxy to check
@@ -139,23 +130,34 @@ public abstract class AopProxyUtils {
 				specifiedInterfaces = advised.getProxiedInterfaces();
 			}
 		}
-		List<Class<?>> proxiedInterfaces = new ArrayList<>(specifiedInterfaces.length + 3);
-		for (Class<?> ifc : specifiedInterfaces) {
-			// Only non-sealed interfaces are actually eligible for JDK proxying (on JDK 17)
-			if (isSealedMethod == null || Boolean.FALSE.equals(ReflectionUtils.invokeMethod(isSealedMethod, ifc))) {
-				proxiedInterfaces.add(ifc);
-			}
+		boolean addSpringProxy = !advised.isInterfaceProxied(SpringProxy.class);
+		boolean addAdvised = !advised.isOpaque() && !advised.isInterfaceProxied(Advised.class);
+		boolean addDecoratingProxy = (decoratingProxy && !advised.isInterfaceProxied(DecoratingProxy.class));
+		int nonUserIfcCount = 0;
+		if (addSpringProxy) {
+			nonUserIfcCount++;
 		}
-		if (!advised.isInterfaceProxied(SpringProxy.class)) {
-			proxiedInterfaces.add(SpringProxy.class);
+		if (addAdvised) {
+			nonUserIfcCount++;
 		}
-		if (!advised.isOpaque() && !advised.isInterfaceProxied(Advised.class)) {
-			proxiedInterfaces.add(Advised.class);
+		if (addDecoratingProxy) {
+			nonUserIfcCount++;
 		}
-		if (decoratingProxy && !advised.isInterfaceProxied(DecoratingProxy.class)) {
-			proxiedInterfaces.add(DecoratingProxy.class);
+		Class<?>[] proxiedInterfaces = new Class<?>[specifiedInterfaces.length + nonUserIfcCount];
+		System.arraycopy(specifiedInterfaces, 0, proxiedInterfaces, 0, specifiedInterfaces.length);
+		int index = specifiedInterfaces.length;
+		if (addSpringProxy) {
+			proxiedInterfaces[index] = SpringProxy.class;
+			index++;
 		}
-		return ClassUtils.toClassArray(proxiedInterfaces);
+		if (addAdvised) {
+			proxiedInterfaces[index] = Advised.class;
+			index++;
+		}
+		if (addDecoratingProxy) {
+			proxiedInterfaces[index] = DecoratingProxy.class;
+		}
+		return proxiedInterfaces;
 	}

 	/**
@@ -204,7 +206,7 @@ public abstract class AopProxyUtils {
 	 * Check equality of the advisors behind the given AdvisedSupport objects.
 	 */
 	public static boolean equalsAdvisors(AdvisedSupport a, AdvisedSupport b) {
-		return a.getAdvisorCount() == b.getAdvisorCount() && Arrays.equals(a.getAdvisors(), b.getAdvisors());
+		return Arrays.equals(a.getAdvisors(), b.getAdvisors());
 	}


@@ -48,7 +48,6 @@ import org.springframework.cglib.proxy.Factory;
 import org.springframework.cglib.proxy.MethodInterceptor;
 import org.springframework.cglib.proxy.MethodProxy;
 import org.springframework.cglib.proxy.NoOp;
-import org.springframework.core.KotlinDetector;
 import org.springframework.core.SmartClassLoader;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
@@ -126,7 +125,7 @@ class CglibAopProxy implements AopProxy, Serializable {
 	 */
 	public CglibAopProxy(AdvisedSupport config) throws AopConfigException {
 		Assert.notNull(config, "AdvisedSupport must not be null");
-		if (config.getAdvisorCount() == 0 && config.getTargetSource() == AdvisedSupport.EMPTY_TARGET_SOURCE) {
+		if (config.getAdvisors().length == 0 && config.getTargetSource() == AdvisedSupport.EMPTY_TARGET_SOURCE) {
 			throw new AopConfigException("No advisors and no TargetSource specified");
 		}
 		this.advised = config;
@@ -753,17 +752,10 @@ class CglibAopProxy implements AopProxy, Serializable {
 				throw ex;
 			}
 			catch (Exception ex) {
-				if (ReflectionUtils.declaresException(getMethod(), ex.getClass()) ||
-						KotlinDetector.isKotlinType(getMethod().getDeclaringClass())) {
-					// Propagate original exception if declared on the target method
-					// (with callers expecting it). Always propagate it for Kotlin code
-					// since checked exceptions do not have to be explicitly declared there.
+				if (ReflectionUtils.declaresException(getMethod(), ex.getClass())) {
 					throw ex;
 				}
 				else {
-					// Checked exception thrown in the interceptor but not declared on the
-					// target method signature -> apply an UndeclaredThrowableException,
-					// aligned with standard JDK dynamic proxy behavior.
 					throw new UndeclaredThrowableException(ex);
 				}
 			}
@@ -950,11 +942,11 @@ class CglibAopProxy implements AopProxy, Serializable {
 			}
 			// Advice instance identity is unimportant to the proxy class:
 			// All that matters is type and ordering.
-			if (this.advised.getAdvisorCount() != otherAdvised.getAdvisorCount()) {
-				return false;
-			}
 			Advisor[] thisAdvisors = this.advised.getAdvisors();
 			Advisor[] thatAdvisors = otherAdvised.getAdvisors();
+			if (thisAdvisors.length != thatAdvisors.length) {
+				return false;
+			}
 			for (int i = 0; i < thisAdvisors.length; i++) {
 				Advisor thisAdvisor = thisAdvisors[i];
 				Advisor thatAdvisor = thatAdvisors[i];
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -20,7 +20,6 @@ import java.io.Serializable;
 import java.lang.reflect.Proxy;

 import org.springframework.aop.SpringProxy;
-import org.springframework.core.NativeDetector;

 /**
 * Default {@link AopProxyFactory} implementation, creating either a CGLIB proxy
@@ -48,10 +47,17 @@ import org.springframework.core.NativeDetector;
@SuppressWarnings("serial")
 public class DefaultAopProxyFactory implements AopProxyFactory, Serializable {

+	/**
+	 * Whether this environment lives within a native image.
+	 * Exposed as a private static field rather than in a {@code NativeImageDetector.inNativeImage()} static method due to https://github.com/oracle/graal/issues/2594.
+	 * @see <a href="https://github.com/oracle/graal/blob/master/sdk/src/org.graalvm.nativeimage/src/org/graalvm/nativeimage/ImageInfo.java">ImageInfo.java</a>
+	 */
+	private static final boolean IN_NATIVE_IMAGE = (System.getProperty("org.graalvm.nativeimage.imagecode") != null);
+

 	@Override
 	public AopProxy createAopProxy(AdvisedSupport config) throws AopConfigException {
-		if (!NativeDetector.inNativeImage() &&
+		if (!IN_NATIVE_IMAGE &&
 				(config.isOptimize() || config.isProxyTargetClass() || hasNoUserSuppliedProxyInterfaces(config))) {
 			Class<?> targetClass = config.getTargetClass();
 			if (targetClass == null) {
@@ -104,7 +104,7 @@ final class JdkDynamicAopProxy implements AopProxy, InvocationHandler, Serializa
 	 */
 	public JdkDynamicAopProxy(AdvisedSupport config) throws AopConfigException {
 		Assert.notNull(config, "AdvisedSupport must not be null");
-		if (config.getAdvisorCount() == 0 && config.getTargetSource() == AdvisedSupport.EMPTY_TARGET_SOURCE) {
+		if (config.getAdvisors().length == 0 && config.getTargetSource() == AdvisedSupport.EMPTY_TARGET_SOURCE) {
 			throw new AopConfigException("No advisors and no TargetSource specified");
 		}
 		this.advised = config;
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -17,7 +17,6 @@
 package org.springframework.aop.framework.autoproxy;

 import java.lang.reflect.Constructor;
-import java.lang.reflect.Proxy;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -47,7 +46,6 @@ import org.springframework.beans.factory.FactoryBean;
 import org.springframework.beans.factory.config.ConfigurableBeanFactory;
 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
 import org.springframework.beans.factory.config.SmartInstantiationAwareBeanPostProcessor;
-import org.springframework.core.SmartClassLoader;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
@@ -441,17 +439,7 @@ public abstract class AbstractAutoProxyCreator extends ProxyProcessorSupport
 		ProxyFactory proxyFactory = new ProxyFactory();
 		proxyFactory.copyFrom(this);

-		if (proxyFactory.isProxyTargetClass()) {
-			// Explicit handling of JDK proxy targets (for introduction advice scenarios)
-			if (Proxy.isProxyClass(beanClass)) {
-				// Must allow for introductions; can't just set interfaces to the proxy's interfaces only.
-				for (Class<?> ifc : beanClass.getInterfaces()) {
-					proxyFactory.addInterface(ifc);
-				}
-			}
-		}
-		else {
-			// No proxyTargetClass flag enforced, let's apply our default checks...
+		if (!proxyFactory.isProxyTargetClass()) {
 			if (shouldProxyTargetClass(beanClass, beanName)) {
 				proxyFactory.setProxyTargetClass(true);
 			}
@@ -470,12 +458,7 @@ public abstract class AbstractAutoProxyCreator extends ProxyProcessorSupport
 			proxyFactory.setPreFiltered(true);
 		}

-		// Use original ClassLoader if bean class not locally loaded in overriding class loader
-		ClassLoader classLoader = getProxyClassLoader();
-		if (classLoader instanceof SmartClassLoader && classLoader != beanClass.getClassLoader()) {
-			classLoader = ((SmartClassLoader) classLoader).getOriginalClassLoader();
-		}
-		return proxyFactory.getProxy(classLoader);
+		return proxyFactory.getProxy(getProxyClassLoader());
 	}

 	/**
@@ -520,10 +503,7 @@ public abstract class AbstractAutoProxyCreator extends ProxyProcessorSupport

 		List<Object> allInterceptors = new ArrayList<>();
 		if (specificInterceptors != null) {
-			if (specificInterceptors.length > 0) {
-				// specificInterceptors may equal PROXY_WITHOUT_ADDITIONAL_INTERCEPTORS
-				allInterceptors.addAll(Arrays.asList(specificInterceptors));
-			}
+			allInterceptors.addAll(Arrays.asList(specificInterceptors));
 			if (commonInterceptors.length > 0) {
 				if (this.applyCommonInterceptorsFirst) {
 					allInterceptors.addAll(0, Arrays.asList(commonInterceptors));
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -125,8 +125,12 @@ public abstract class AbstractBeanFactoryBasedTargetSourceCreator
 	 */
 	protected DefaultListableBeanFactory getInternalBeanFactoryForBean(String beanName) {
 		synchronized (this.internalBeanFactories) {
-			return this.internalBeanFactories.computeIfAbsent(beanName,
-					name -> buildInternalBeanFactory(this.beanFactory));
+			DefaultListableBeanFactory internalBeanFactory = this.internalBeanFactories.get(beanName);
+			if (internalBeanFactory == null) {
+				internalBeanFactory = buildInternalBeanFactory(this.beanFactory);
+				this.internalBeanFactories.put(beanName, internalBeanFactory);
+			}
+			return internalBeanFactory;
 		}
 	}

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -137,7 +137,7 @@ public abstract class AbstractBeanFactoryPointcutAdvisor extends AbstractPointcu
 		StringBuilder sb = new StringBuilder(getClass().getName());
 		sb.append(": advice ");
 		if (this.adviceBeanName != null) {
-			sb.append("bean '").append(this.adviceBeanName).append('\'');
+			sb.append("bean '").append(this.adviceBeanName).append("'");
 		}
 		else {
 			sb.append(this.advice);
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -71,8 +71,7 @@ public class DefaultIntroductionAdvisor implements IntroductionAdvisor, ClassFil
 		if (introductionInfo != null) {
 			Class<?>[] introducedInterfaces = introductionInfo.getInterfaces();
 			if (introducedInterfaces.length == 0) {
-				throw new IllegalArgumentException(
-						"IntroductionInfo defines no interfaces to introduce: " + introductionInfo);
+				throw new IllegalArgumentException("IntroductionAdviceSupport implements no interfaces");
 			}
 			for (Class<?> ifc : introducedInterfaces) {
 				addInterface(ifc);
@@ -191,9 +191,9 @@ public abstract class AbstractBeanFactoryBasedTargetSource implements TargetSour
 	@Override
 	public String toString() {
 		StringBuilder sb = new StringBuilder(getClass().getSimpleName());
-		sb.append(" for target bean '").append(this.targetBeanName).append('\'');
+		sb.append(" for target bean '").append(this.targetBeanName).append("'");
 		if (this.targetClass != null) {
-			sb.append(" of type [").append(this.targetClass.getName()).append(']');
+			sb.append(" of type [").append(this.targetClass.getName()).append("]");
 		}
 		return sb.toString();
 	}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -116,7 +116,7 @@ public abstract class AbstractPoolingTargetSource extends AbstractPrototypeBased


 	/**
-	 * Return an IntroductionAdvisor that provides a mixin
+	 * Return an IntroductionAdvisor that providing a mixin
 	 * exposing statistics about the pool maintained by this object.
 	 */
 	public DefaultIntroductionAdvisor getPoolingConfigMixin() {
@@ -276,14 +276,14 @@ public class AspectJAdviceParameterNameDiscovererTests {

 	private static String format(String[] names) {
 		StringBuilder sb = new StringBuilder();
-		sb.append('(');
+		sb.append("(");
 		for (int i = 0; i < names.length; i++) {
 			sb.append(names[i]);
 			if ((i + 1) < names.length) {
-				sb.append(',');
+				sb.append(",");
 			}
 		}
-		sb.append(')');
+		sb.append(")");
 		return sb.toString();
 	}

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -183,7 +183,7 @@ public class ProxyFactoryTests {
 	}

 	@Test
-	public void testGetsAllInterfaces() {
+	public void testGetsAllInterfaces() throws Exception {
 		// Extend to get new interface
 		class TestBeanSubclass extends TestBean implements Comparable<Object> {
 			@Override
@@ -240,16 +240,6 @@ public class ProxyFactoryTests {
 		assertThat(factory.countAdvicesOfType(NopInterceptor.class) == 2).isTrue();
 	}

-	@Test
-	public void testSealedInterfaceExclusion() {
-		// String implements ConstantDesc on JDK 12+, sealed as of JDK 17
-		ProxyFactory factory = new ProxyFactory(new String());
-		NopInterceptor di = new NopInterceptor();
-		factory.addAdvice(0, di);
-		Object proxy = factory.getProxy();
-		assertThat(proxy).isInstanceOf(CharSequence.class);
-	}
-
 	/**
 	 * Should see effect immediately on behavior.
 	 */
@@ -11,7 +11,7 @@ sourceSets.test.java.srcDirs = files()
 aspectj.version = dependencyManagement.managedVersions['org.aspectj:aspectjweaver']

 dependencies {
-	api("org.aspectj:aspectjweaver")
+	compile("org.aspectj:aspectjweaver")
 	compileOnly("org.aspectj:aspectjrt")
 	optional(project(":spring-aop"))  // for @Async support
 	optional(project(":spring-beans"))  // for @Configurable support
@@ -21,13 +21,13 @@ dependencies {
 	optional(project(":spring-tx"))  // for JPA, @Transactional support
 	optional("javax.cache:cache-api")  // for JCache aspect
 	optional("javax.transaction:javax.transaction-api")  // for @javax.transaction.Transactional support
-	testImplementation(project(":spring-core"))  // for CodeStyleAspect
-	testImplementation(project(":spring-test"))
-	testImplementation(testFixtures(project(":spring-context")))
-	testImplementation(testFixtures(project(":spring-context-support")))
-	testImplementation(testFixtures(project(":spring-core")))
-	testImplementation(testFixtures(project(":spring-tx")))
-	testImplementation("javax.mail:javax.mail-api")
+	testCompile(project(":spring-core"))  // for CodeStyleAspect
+	testCompile(project(":spring-test"))
+	testCompile(testFixtures(project(":spring-context")))
+	testCompile(testFixtures(project(":spring-context-support")))
+	testCompile(testFixtures(project(":spring-core")))
+	testCompile(testFixtures(project(":spring-tx")))
+	testCompile("javax.mail:javax.mail-api")
 	testCompileOnly("org.aspectj:aspectjrt")
 }

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -59,8 +59,7 @@ public abstract aspect AbstractTransactionAspect extends TransactionAspectSuppor

 	@Override
 	public void destroy() {
-		// An aspect is basically a singleton -> cleanup on destruction
-		clearTransactionManagerCache();
+		clearTransactionManagerCache(); // An aspect is basically a singleton
 	}

 	@SuppressAjWarnings("adviceDidNotMatch")
@@ -4,14 +4,14 @@ apply plugin: "groovy"
 apply plugin: "kotlin"

 dependencies {
-	api(project(":spring-core"))
+	compile(project(":spring-core"))
 	optional("javax.inject:javax.inject")
 	optional("org.yaml:snakeyaml")
 	optional("org.codehaus.groovy:groovy-xml")
 	optional("org.jetbrains.kotlin:kotlin-reflect")
 	optional("org.jetbrains.kotlin:kotlin-stdlib")
-	testImplementation(testFixtures(project(":spring-core")))
-	testImplementation("javax.annotation:javax.annotation-api")
+	testCompile(testFixtures(project(":spring-core")))
+	testCompile("javax.annotation:javax.annotation-api")
 	testFixturesApi("org.junit.jupiter:junit-jupiter-api")
 	testFixturesImplementation("org.assertj:assertj-core")
 }
@@ -23,6 +23,8 @@ sourceSets {
 }

 compileGroovy {
+	sourceCompatibility = 1.8
+	targetCompatibility = 1.8
 	options.compilerArgs += "-Werror"
 }

@@ -1,13 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd">
+<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "https://www.springframework.org/dtd/spring-beans-2.0.dtd">

-  <bean id="bean1" class="org.springframework.beans.factory.ConcurrentBeanFactoryBenchmark$ConcurrentBean"
+<beans>
+
+  <bean id="bean1" class="org.springframework.beans.factory.ConcurrentBeanFactoryTests$ConcurrentBean"
 			scope="prototype">
    <property name="date" value="2004/08/08"/>
  </bean>

-  <bean id="bean2" class="org.springframework.beans.factory.ConcurrentBeanFactoryBenchmark$ConcurrentBean"
+  <bean id="bean2" class="org.springframework.beans.factory.ConcurrentBeanFactoryTests$ConcurrentBean"
 			scope="prototype">
    <property name="date" value="2000/02/02"/>
  </bean>
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -305,10 +305,8 @@ public abstract class AbstractNestablePropertyAccessor extends AbstractPropertyA
 					Class<?> componentType = propValue.getClass().getComponentType();
 					Object newArray = Array.newInstance(componentType, arrayIndex + 1);
 					System.arraycopy(propValue, 0, newArray, 0, length);
-					int lastKeyIndex = tokens.canonicalName.lastIndexOf('[');
-					String propName = tokens.canonicalName.substring(0, lastKeyIndex);
-					setPropertyValue(propName, newArray);
-					propValue = getPropertyValue(propName);
+					setPropertyValue(tokens.actualName, newArray);
+					propValue = getPropertyValue(tokens.actualName);
 				}
 				Array.set(propValue, arrayIndex, convertedValue);
 			}
@@ -424,12 +422,9 @@ public abstract class AbstractNestablePropertyAccessor extends AbstractPropertyA
 				}
 				return;
 			}
-			if (this.suppressNotWritablePropertyException) {
-				// Optimization for common ignoreUnknown=true scenario since the
-				// exception would be caught and swallowed higher up anyway...
-				return;
+			else {
+				throw createNotWritablePropertyException(tokens.canonicalName);
 			}
-			throw createNotWritablePropertyException(tokens.canonicalName);
 		}

 		Object oldValue = null;
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -40,8 +40,6 @@ public abstract class AbstractPropertyAccessor extends TypeConverterSupport impl

 	private boolean autoGrowNestedPaths = false;

-	boolean suppressNotWritablePropertyException = false;
-

 	@Override
 	public void setExtractOldValueForEditor(boolean extractOldValueForEditor) {
@@ -91,41 +89,30 @@ public abstract class AbstractPropertyAccessor extends TypeConverterSupport impl
 		List<PropertyAccessException> propertyAccessExceptions = null;
 		List<PropertyValue> propertyValues = (pvs instanceof MutablePropertyValues ?
 				((MutablePropertyValues) pvs).getPropertyValueList() : Arrays.asList(pvs.getPropertyValues()));
-
-		if (ignoreUnknown) {
-			this.suppressNotWritablePropertyException = true;
-		}
-		try {
-			for (PropertyValue pv : propertyValues) {
-				// setPropertyValue may throw any BeansException, which won't be caught
+		for (PropertyValue pv : propertyValues) {
+			try {
+				// This method may throw any BeansException, which won't be caught
 				// here, if there is a critical failure such as no matching field.
 				// We can attempt to deal only with less serious exceptions.
-				try {
-					setPropertyValue(pv);
-				}
-				catch (NotWritablePropertyException ex) {
-					if (!ignoreUnknown) {
-						throw ex;
-					}
-					// Otherwise, just ignore it and continue...
-				}
-				catch (NullValueInNestedPathException ex) {
-					if (!ignoreInvalid) {
-						throw ex;
-					}
-					// Otherwise, just ignore it and continue...
-				}
-				catch (PropertyAccessException ex) {
-					if (propertyAccessExceptions == null) {
-						propertyAccessExceptions = new ArrayList<>();
-					}
-					propertyAccessExceptions.add(ex);
-				}
+				setPropertyValue(pv);
 			}
-		}
-		finally {
-			if (ignoreUnknown) {
-				this.suppressNotWritablePropertyException = false;
+			catch (NotWritablePropertyException ex) {
+				if (!ignoreUnknown) {
+					throw ex;
+				}
+				// Otherwise, just ignore it and continue...
+			}
+			catch (NullValueInNestedPathException ex) {
+				if (!ignoreInvalid) {
+					throw ex;
+				}
+				// Otherwise, just ignore it and continue...
+			}
+			catch (PropertyAccessException ex) {
+				if (propertyAccessExceptions == null) {
+					propertyAccessExceptions = new ArrayList<>();
+				}
+				propertyAccessExceptions.add(ex);
 			}
 		}

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -41,6 +41,8 @@ import kotlin.reflect.KParameter;
 import kotlin.reflect.full.KClasses;
 import kotlin.reflect.jvm.KCallablesJvm;
 import kotlin.reflect.jvm.ReflectJvmMapping;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;

 import org.springframework.core.DefaultParameterNameDiscoverer;
 import org.springframework.core.KotlinDetector;
@@ -73,6 +75,8 @@ import org.springframework.util.StringUtils;
 */
 public abstract class BeanUtils {

+	private static final Log logger = LogFactory.getLog(BeanUtils.class);
+
 	private static final ParameterNameDiscoverer parameterNameDiscoverer =
 			new DefaultParameterNameDiscoverer();

@@ -87,10 +91,7 @@ public abstract class BeanUtils {
 		values.put(byte.class, (byte) 0);
 		values.put(short.class, (short) 0);
 		values.put(int.class, 0);
-		values.put(long.class, 0L);
-		values.put(float.class, 0F);
-		values.put(double.class, 0D);
-		values.put(char.class, '\0');
+		values.put(long.class, (long) 0);
 		DEFAULT_TYPE_VALUES = Collections.unmodifiableMap(values);
 	}

@@ -267,7 +268,10 @@ public abstract class BeanUtils {
 	public static <T> Constructor<T> findPrimaryConstructor(Class<T> clazz) {
 		Assert.notNull(clazz, "Class must not be null");
 		if (KotlinDetector.isKotlinReflectPresent() && KotlinDetector.isKotlinType(clazz)) {
-			return KotlinDelegate.findPrimaryConstructor(clazz);
+			Constructor<T> kotlinPrimaryConstructor = KotlinDelegate.findPrimaryConstructor(clazz);
+			if (kotlinPrimaryConstructor != null) {
+				return kotlinPrimaryConstructor;
+			}
 		}
 		return null;
 	}
@@ -539,7 +543,6 @@ public abstract class BeanUtils {
 		if (targetType == null || targetType.isArray() || unknownEditorTypes.contains(targetType)) {
 			return null;
 		}
-
 		ClassLoader cl = targetType.getClassLoader();
 		if (cl == null) {
 			try {
@@ -550,29 +553,34 @@ public abstract class BeanUtils {
 			}
 			catch (Throwable ex) {
 				// e.g. AccessControlException on Google App Engine
+				if (logger.isDebugEnabled()) {
+					logger.debug("Could not access system ClassLoader: " + ex);
+				}
 				return null;
 			}
 		}
-
 		String targetTypeName = targetType.getName();
 		String editorName = targetTypeName + "Editor";
 		try {
 			Class<?> editorClass = cl.loadClass(editorName);
-			if (editorClass != null) {
-				if (!PropertyEditor.class.isAssignableFrom(editorClass)) {
-					unknownEditorTypes.add(targetType);
-					return null;
+			if (!PropertyEditor.class.isAssignableFrom(editorClass)) {
+				if (logger.isInfoEnabled()) {
+					logger.info("Editor class [" + editorName +
+							"] does not implement [java.beans.PropertyEditor] interface");
 				}
-				return (PropertyEditor) instantiateClass(editorClass);
+				unknownEditorTypes.add(targetType);
+				return null;
 			}
-			// Misbehaving ClassLoader returned null instead of ClassNotFoundException
-			// - fall back to unknown editor type registration below
+			return (PropertyEditor) instantiateClass(editorClass);
 		}
 		catch (ClassNotFoundException ex) {
-			// Ignore - fall back to unknown editor type registration below
+			if (logger.isTraceEnabled()) {
+				logger.trace("No property editor [" + editorName + "] found for type " +
+						targetTypeName + " according to 'Editor' suffix convention");
+			}
+			unknownEditorTypes.add(targetType);
+			return null;
 		}
-		unknownEditorTypes.add(targetType);
-		return null;
 	}

 	/**
@@ -764,14 +772,7 @@ public abstract class BeanUtils {
 					if (readMethod != null) {
 						ResolvableType sourceResolvableType = ResolvableType.forMethodReturnType(readMethod);
 						ResolvableType targetResolvableType = ResolvableType.forMethodParameter(writeMethod, 0);
-
-						// Ignore generic types in assignable check if either ResolvableType has unresolvable generics.
-						boolean isAssignable =
-								(sourceResolvableType.hasUnresolvableGenerics() || targetResolvableType.hasUnresolvableGenerics() ?
-										ClassUtils.isAssignable(writeMethod.getParameterTypes()[0], readMethod.getReturnType()) :
-										targetResolvableType.isAssignableFrom(sourceResolvableType));
-
-						if (isAssignable) {
+						if (targetResolvableType.isAssignableFrom(sourceResolvableType)) {
 							try {
 								if (!Modifier.isPublic(readMethod.getDeclaringClass().getModifiers())) {
 									readMethod.setAccessible(true);
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -92,7 +92,8 @@ public class DirectFieldAccessor extends AbstractNestablePropertyAccessor {
 	@Override
 	protected NotWritablePropertyException createNotWritablePropertyException(String propertyName) {
 		PropertyMatches matches = PropertyMatches.forField(propertyName, getRootClass());
-		throw new NotWritablePropertyException(getRootClass(), getNestedPath() + propertyName,
+		throw new NotWritablePropertyException(
+				getRootClass(), getNestedPath() + propertyName,
 				matches.buildErrorMessage(), matches.getPossibleMatches());
 	}

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -138,7 +138,7 @@ final class GenericTypeAwarePropertyDescriptor extends PropertyDescriptor {
 		Set<Method> ambiguousCandidates = this.ambiguousWriteMethods;
 		if (ambiguousCandidates != null) {
 			this.ambiguousWriteMethods = null;
-			LogFactory.getLog(GenericTypeAwarePropertyDescriptor.class).debug("Non-unique JavaBean property '" +
+			LogFactory.getLog(GenericTypeAwarePropertyDescriptor.class).warn("Invalid JavaBean property '" +
 					getName() + "' being accessed! Ambiguous write methods found next to actually used [" +
 					this.writeMethod + "]: " + ambiguousCandidates);
 		}
@@ -247,14 +247,14 @@ class TypeConverterDelegate {
 				// Definitely doesn't match: throw IllegalArgumentException/IllegalStateException
 				StringBuilder msg = new StringBuilder();
 				msg.append("Cannot convert value of type '").append(ClassUtils.getDescriptiveType(newValue));
-				msg.append("' to required type '").append(ClassUtils.getQualifiedName(requiredType)).append('\'');
+				msg.append("' to required type '").append(ClassUtils.getQualifiedName(requiredType)).append("'");
 				if (propertyName != null) {
-					msg.append(" for property '").append(propertyName).append('\'');
+					msg.append(" for property '").append(propertyName).append("'");
 				}
 				if (editor != null) {
 					msg.append(": PropertyEditor [").append(editor.getClass().getName()).append(
 							"] returned inappropriate value of type '").append(
-							ClassUtils.getDescriptiveType(convertedValue)).append('\'');
+							ClassUtils.getDescriptiveType(convertedValue)).append("'");
 					throw new IllegalArgumentException(msg.toString());
 				}
 				else {
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -41,10 +41,10 @@ public class TypeMismatchException extends PropertyAccessException {
 	private String propertyName;

 	@Nullable
-	private final transient Object value;
+	private transient Object value;

 	@Nullable
-	private final Class<?> requiredType;
+	private Class<?> requiredType;


 	/**
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -84,7 +84,7 @@ import org.springframework.lang.Nullable;
 * (only applicable when running in a web application context)
 * <li>{@code postProcessBeforeInitialization} methods of BeanPostProcessors
 * <li>InitializingBean's {@code afterPropertiesSet}
- * <li>a custom {@code init-method} definition
+ * <li>a custom init-method definition
 * <li>{@code postProcessAfterInitialization} methods of BeanPostProcessors
 * </ol>
 *
@@ -92,7 +92,7 @@ import org.springframework.lang.Nullable;
 * <ol>
 * <li>{@code postProcessBeforeDestruction} methods of DestructionAwareBeanPostProcessors
 * <li>DisposableBean's {@code destroy}
- * <li>a custom {@code destroy-method} definition
+ * <li>a custom destroy-method definition
 * </ol>
 *
 * @author Rod Johnson
@@ -102,8 +102,6 @@ import org.springframework.lang.Nullable;
 * @see BeanNameAware#setBeanName
 * @see BeanClassLoaderAware#setBeanClassLoader
 * @see BeanFactoryAware#setBeanFactory
- * @see org.springframework.context.EnvironmentAware#setEnvironment
- * @see org.springframework.context.EmbeddedValueResolverAware#setEmbeddedValueResolver
 * @see org.springframework.context.ResourceLoaderAware#setResourceLoader
 * @see org.springframework.context.ApplicationEventPublisherAware#setApplicationEventPublisher
 * @see org.springframework.context.MessageSourceAware#setMessageSource
@@ -113,7 +111,6 @@ import org.springframework.lang.Nullable;
 * @see InitializingBean#afterPropertiesSet
 * @see org.springframework.beans.factory.support.RootBeanDefinition#getInitMethodName
 * @see org.springframework.beans.factory.config.BeanPostProcessor#postProcessAfterInitialization
- * @see org.springframework.beans.factory.config.DestructionAwareBeanPostProcessor#postProcessBeforeDestruction
 * @see DisposableBean#destroy
 * @see org.springframework.beans.factory.support.RootBeanDefinition#getDestroyMethodName
 */
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -628,58 +628,46 @@ public class AutowiredAnnotationBeanPostProcessor implements SmartInstantiationA
 			Field field = (Field) this.member;
 			Object value;
 			if (this.cached) {
-				try {
-					value = resolvedCachedArgument(beanName, this.cachedFieldValue);
-				}
-				catch (NoSuchBeanDefinitionException ex) {
-					// Unexpected removal of target bean for cached argument -> re-resolve
-					value = resolveFieldValue(field, bean, beanName);
-				}
+				value = resolvedCachedArgument(beanName, this.cachedFieldValue);
 			}
 			else {
-				value = resolveFieldValue(field, bean, beanName);
+				DependencyDescriptor desc = new DependencyDescriptor(field, this.required);
+				desc.setContainingClass(bean.getClass());
+				Set<String> autowiredBeanNames = new LinkedHashSet<>(1);
+				Assert.state(beanFactory != null, "No BeanFactory available");
+				TypeConverter typeConverter = beanFactory.getTypeConverter();
+				try {
+					value = beanFactory.resolveDependency(desc, beanName, autowiredBeanNames, typeConverter);
+				}
+				catch (BeansException ex) {
+					throw new UnsatisfiedDependencyException(null, beanName, new InjectionPoint(field), ex);
+				}
+				synchronized (this) {
+					if (!this.cached) {
+						if (value != null || this.required) {
+							this.cachedFieldValue = desc;
+							registerDependentBeans(beanName, autowiredBeanNames);
+							if (autowiredBeanNames.size() == 1) {
+								String autowiredBeanName = autowiredBeanNames.iterator().next();
+								if (beanFactory.containsBean(autowiredBeanName) &&
+										beanFactory.isTypeMatch(autowiredBeanName, field.getType())) {
+									this.cachedFieldValue = new ShortcutDependencyDescriptor(
+											desc, autowiredBeanName, field.getType());
+								}
+							}
+						}
+						else {
+							this.cachedFieldValue = null;
+						}
+						this.cached = true;
+					}
+				}
 			}
 			if (value != null) {
 				ReflectionUtils.makeAccessible(field);
 				field.set(bean, value);
 			}
 		}
-
-		@Nullable
-		private Object resolveFieldValue(Field field, Object bean, @Nullable String beanName) {
-			DependencyDescriptor desc = new DependencyDescriptor(field, this.required);
-			desc.setContainingClass(bean.getClass());
-			Set<String> autowiredBeanNames = new LinkedHashSet<>(1);
-			Assert.state(beanFactory != null, "No BeanFactory available");
-			TypeConverter typeConverter = beanFactory.getTypeConverter();
-			Object value;
-			try {
-				value = beanFactory.resolveDependency(desc, beanName, autowiredBeanNames, typeConverter);
-			}
-			catch (BeansException ex) {
-				throw new UnsatisfiedDependencyException(null, beanName, new InjectionPoint(field), ex);
-			}
-			synchronized (this) {
-				if (!this.cached) {
-					Object cachedFieldValue = null;
-					if (value != null || this.required) {
-						cachedFieldValue = desc;
-						registerDependentBeans(beanName, autowiredBeanNames);
-						if (autowiredBeanNames.size() == 1) {
-							String autowiredBeanName = autowiredBeanNames.iterator().next();
-							if (beanFactory.containsBean(autowiredBeanName) &&
-									beanFactory.isTypeMatch(autowiredBeanName, field.getType())) {
-								cachedFieldValue = new ShortcutDependencyDescriptor(
-										desc, autowiredBeanName, field.getType());
-							}
-						}
-					}
-					this.cachedFieldValue = cachedFieldValue;
-					this.cached = true;
-				}
-			}
-			return value;
-		}
 	}


@@ -708,16 +696,58 @@ public class AutowiredAnnotationBeanPostProcessor implements SmartInstantiationA
 			Method method = (Method) this.member;
 			Object[] arguments;
 			if (this.cached) {
-				try {
-					arguments = resolveCachedArguments(beanName);
-				}
-				catch (NoSuchBeanDefinitionException ex) {
-					// Unexpected removal of target bean for cached argument -> re-resolve
-					arguments = resolveMethodArguments(method, bean, beanName);
-				}
+				// Shortcut for avoiding synchronization...
+				arguments = resolveCachedArguments(beanName);
 			}
 			else {
-				arguments = resolveMethodArguments(method, bean, beanName);
+				int argumentCount = method.getParameterCount();
+				arguments = new Object[argumentCount];
+				DependencyDescriptor[] descriptors = new DependencyDescriptor[argumentCount];
+				Set<String> autowiredBeans = new LinkedHashSet<>(argumentCount);
+				Assert.state(beanFactory != null, "No BeanFactory available");
+				TypeConverter typeConverter = beanFactory.getTypeConverter();
+				for (int i = 0; i < arguments.length; i++) {
+					MethodParameter methodParam = new MethodParameter(method, i);
+					DependencyDescriptor currDesc = new DependencyDescriptor(methodParam, this.required);
+					currDesc.setContainingClass(bean.getClass());
+					descriptors[i] = currDesc;
+					try {
+						Object arg = beanFactory.resolveDependency(currDesc, beanName, autowiredBeans, typeConverter);
+						if (arg == null && !this.required) {
+							arguments = null;
+							break;
+						}
+						arguments[i] = arg;
+					}
+					catch (BeansException ex) {
+						throw new UnsatisfiedDependencyException(null, beanName, new InjectionPoint(methodParam), ex);
+					}
+				}
+				synchronized (this) {
+					if (!this.cached) {
+						if (arguments != null) {
+							DependencyDescriptor[] cachedMethodArguments = Arrays.copyOf(descriptors, arguments.length);
+							registerDependentBeans(beanName, autowiredBeans);
+							if (autowiredBeans.size() == argumentCount) {
+								Iterator<String> it = autowiredBeans.iterator();
+								Class<?>[] paramTypes = method.getParameterTypes();
+								for (int i = 0; i < paramTypes.length; i++) {
+									String autowiredBeanName = it.next();
+									if (beanFactory.containsBean(autowiredBeanName) &&
+											beanFactory.isTypeMatch(autowiredBeanName, paramTypes[i])) {
+										cachedMethodArguments[i] = new ShortcutDependencyDescriptor(
+												descriptors[i], autowiredBeanName, paramTypes[i]);
+									}
+								}
+							}
+							this.cachedMethodArguments = cachedMethodArguments;
+						}
+						else {
+							this.cachedMethodArguments = null;
+						}
+						this.cached = true;
+					}
+				}
 			}
 			if (arguments != null) {
 				try {
@@ -742,59 +772,6 @@ public class AutowiredAnnotationBeanPostProcessor implements SmartInstantiationA
 			}
 			return arguments;
 		}
-
-		@Nullable
-		private Object[] resolveMethodArguments(Method method, Object bean, @Nullable String beanName) {
-			int argumentCount = method.getParameterCount();
-			Object[] arguments = new Object[argumentCount];
-			DependencyDescriptor[] descriptors = new DependencyDescriptor[argumentCount];
-			Set<String> autowiredBeans = new LinkedHashSet<>(argumentCount);
-			Assert.state(beanFactory != null, "No BeanFactory available");
-			TypeConverter typeConverter = beanFactory.getTypeConverter();
-			for (int i = 0; i < arguments.length; i++) {
-				MethodParameter methodParam = new MethodParameter(method, i);
-				DependencyDescriptor currDesc = new DependencyDescriptor(methodParam, this.required);
-				currDesc.setContainingClass(bean.getClass());
-				descriptors[i] = currDesc;
-				try {
-					Object arg = beanFactory.resolveDependency(currDesc, beanName, autowiredBeans, typeConverter);
-					if (arg == null && !this.required) {
-						arguments = null;
-						break;
-					}
-					arguments[i] = arg;
-				}
-				catch (BeansException ex) {
-					throw new UnsatisfiedDependencyException(null, beanName, new InjectionPoint(methodParam), ex);
-				}
-			}
-			synchronized (this) {
-				if (!this.cached) {
-					if (arguments != null) {
-						DependencyDescriptor[] cachedMethodArguments = Arrays.copyOf(descriptors, arguments.length);
-						registerDependentBeans(beanName, autowiredBeans);
-						if (autowiredBeans.size() == argumentCount) {
-							Iterator<String> it = autowiredBeans.iterator();
-							Class<?>[] paramTypes = method.getParameterTypes();
-							for (int i = 0; i < paramTypes.length; i++) {
-								String autowiredBeanName = it.next();
-								if (beanFactory.containsBean(autowiredBeanName) &&
-										beanFactory.isTypeMatch(autowiredBeanName, paramTypes[i])) {
-									cachedMethodArguments[i] = new ShortcutDependencyDescriptor(
-											descriptors[i], autowiredBeanName, paramTypes[i]);
-								}
-							}
-						}
-						this.cachedMethodArguments = cachedMethodArguments;
-					}
-					else {
-						this.cachedMethodArguments = null;
-					}
-					this.cached = true;
-				}
-			}
-			return arguments;
-		}
 	}


@@ -26,6 +26,9 @@ import java.util.Collections;
 import java.util.LinkedHashSet;
 import java.util.Set;

+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
 import org.springframework.beans.MutablePropertyValues;
 import org.springframework.beans.PropertyValues;
 import org.springframework.beans.factory.support.RootBeanDefinition;
@@ -66,6 +69,8 @@ public class InjectionMetadata {
 	};


+	private static final Log logger = LogFactory.getLog(InjectionMetadata.class);
+
 	private final Class<?> targetClass;

 	private final Collection<InjectedElement> injectedElements;
@@ -105,6 +110,9 @@ public class InjectionMetadata {
 			if (!beanDefinition.isExternallyManagedConfigMember(member)) {
 				beanDefinition.registerExternallyManagedConfigMember(member);
 				checkedElements.add(element);
+				if (logger.isTraceEnabled()) {
+					logger.trace("Registered injected element on class [" + this.targetClass.getName() + "]: " + element);
+				}
 			}
 		}
 		this.checkedElements = checkedElements;
@@ -116,6 +124,9 @@ public class InjectionMetadata {
 				(checkedElements != null ? checkedElements : this.injectedElements);
 		if (!elementsToIterate.isEmpty()) {
 			for (InjectedElement element : elementsToIterate) {
+				if (logger.isTraceEnabled()) {
+					logger.trace("Processing injected element of bean '" + beanName + "': " + element);
+				}
 				element.inject(target, beanName, pvs);
 			}
 		}
@@ -141,12 +152,12 @@ public class InjectionMetadata {
 	 * Return an {@code InjectionMetadata} instance, possibly for empty elements.
 	 * @param elements the elements to inject (possibly empty)
 	 * @param clazz the target class
-	 * @return a new {@link #InjectionMetadata(Class, Collection)} instance
+	 * @return a new {@link #InjectionMetadata(Class, Collection)} instance,
+	 * or {@link #EMPTY} in case of no elements
 	 * @since 5.2
 	 */
 	public static InjectionMetadata forElements(Collection<InjectedElement> elements, Class<?> clazz) {
-		return (elements.isEmpty() ? new InjectionMetadata(clazz, Collections.emptyList()) :
-				new InjectionMetadata(clazz, elements));
+		return (elements.isEmpty() ? InjectionMetadata.EMPTY : new InjectionMetadata(clazz, elements));
 	}

 	/**
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -217,13 +217,13 @@ public class RequiredAnnotationBeanPostProcessor implements SmartInstantiationAw
 					sb.append(" and");
 				}
 				else {
-					sb.append(',');
+					sb.append(",");
 				}
 			}
-			sb.append(" '").append(propertyName).append('\'');
+			sb.append(" '").append(propertyName).append("'");
 		}
 		sb.append(size == 1 ? " is" : " are");
-		sb.append(" required for bean '").append(beanName).append('\'');
+		sb.append(" required for bean '").append(beanName).append("'");
 		return sb.toString();
 	}

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -351,9 +351,7 @@ public class ConstructorArgumentValues {
 	 * @return the ValueHolder for the argument, or {@code null} if none set
 	 */
 	@Nullable
-	public ValueHolder getArgumentValue(int index, @Nullable Class<?> requiredType,
-			@Nullable String requiredName, @Nullable Set<ValueHolder> usedValueHolders) {
-
+	public ValueHolder getArgumentValue(int index, @Nullable Class<?> requiredType, @Nullable String requiredName, @Nullable Set<ValueHolder> usedValueHolders) {
 		Assert.isTrue(index >= 0, "Index must not be negative");
 		ValueHolder valueHolder = getIndexedArgumentValue(index, requiredType, requiredName);
 		if (valueHolder == null) {
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -36,16 +36,15 @@ import org.springframework.util.StringValueResolver;
 * Example XML bean definition:
 *
 * <pre class="code">
- * &lt;bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"&gt;
- *   &lt;property name="driverClassName" value="${driver}" /&gt;
- *   &lt;property name="url" value="jdbc:${dbname}" /&gt;
+ * &lt;bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"/&gt;
+ *   &lt;property name="driverClassName" value="${driver}"/&gt;
+ *   &lt;property name="url" value="jdbc:${dbname}"/&gt;
 * &lt;/bean&gt;
 * </pre>
 *
 * Example properties file:
 *
- * <pre class="code">
- * driver=com.mysql.jdbc.Driver
+ * <pre class="code">driver=com.mysql.jdbc.Driver
 * dbname=mysql:mydb</pre>
 *
 * Annotated bean definitions may take advantage of property replacement using
@@ -57,8 +56,7 @@ import org.springframework.util.StringValueResolver;
 * in bean references. Furthermore, placeholder values can also cross-reference
 * other placeholders, like:
 *
- * <pre class="code">
- * rootPath=myrootdir
+ * <pre class="code">rootPath=myrootdir
 * subPath=${rootPath}/subdir</pre>
 *
 * In contrast to {@link PropertyOverrideConfigurer}, subclasses of this type allow
@@ -73,13 +71,13 @@ import org.springframework.util.StringValueResolver;
 *
 * <p>Default property values can be defined globally for each configurer instance
 * via the {@link #setProperties properties} property, or on a property-by-property basis
- * using the value separator which is {@code ":"} by default and customizable via
- * {@link #setValueSeparator(String)}.
+ * using the default value separator which is {@code ":"} by default and
+ * customizable via {@link #setValueSeparator(String)}.
 *
 * <p>Example XML property with default value:
 *
 * <pre class="code">
- *   &lt;property name="url" value="jdbc:${dbname:defaultdb}" /&gt;
+ *   <property name="url" value="jdbc:${dbname:defaultdb}"/>
 * </pre>
 *
 * @author Chris Beams
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -52,7 +52,6 @@ import org.springframework.util.StringUtils;
 * @author Dave Syer
 * @author Juergen Hoeller
 * @author Sam Brannen
- * @author Brian Clozel
 * @since 4.1
 */
 public abstract class YamlProcessor {
@@ -129,11 +128,10 @@ public abstract class YamlProcessor {

 	/**
 	 * Set the supported types that can be loaded from YAML documents.
-	 * <p>If no supported types are configured, only Java standard classes
-	 * (as defined in {@link org.yaml.snakeyaml.constructor.SafeConstructor})
-	 * encountered in YAML documents will be supported.
-	 * If an unsupported type is encountered, an {@link IllegalStateException}
-	 * will be thrown when the corresponding YAML node is processed.
+	 * <p>If no supported types are configured, all types encountered in YAML
+	 * documents will be supported. If an unsupported type is encountered, an
+	 * {@link IllegalStateException} will be thrown when the corresponding YAML
+	 * node is processed.
 	 * @param supportedTypes the supported types, or an empty array to clear the
 	 * supported types
 	 * @since 5.1.16
@@ -184,8 +182,12 @@ public abstract class YamlProcessor {
 	protected Yaml createYaml() {
 		LoaderOptions loaderOptions = new LoaderOptions();
 		loaderOptions.setAllowDuplicateKeys(false);
-		return new Yaml(new FilteringConstructor(loaderOptions), new Representer(),
-				new DumperOptions(), loaderOptions);
+
+		if (!this.supportedTypes.isEmpty()) {
+			return new Yaml(new FilteringConstructor(loaderOptions), new Representer(),
+					new DumperOptions(), loaderOptions);
+		}
+		return new Yaml(loaderOptions);
 	}

 	private boolean process(MatchCallback callback, Yaml yaml, Resource resource) {
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -489,9 +489,9 @@ public class GroovyBeanDefinitionReader extends AbstractBeanDefinitionReader imp
 						resolveConstructorArguments(args, 2, hasClosureArgument ? args.length - 1 : args.length);
 				this.currentBeanDefinition = new GroovyBeanDefinitionWrapper(beanName, (Class<?>) args[1], constructorArgs);
 				Map<?, ?> namedArgs = (Map<?, ?>) args[0];
-				for (Map.Entry<?, ?> entity : namedArgs.entrySet()) {
-					String propName = (String) entity.getKey();
-					setProperty(propName, entity.getValue());
+				for (Object o : namedArgs.keySet()) {
+					String propName = (String) o;
+					setProperty(propName, namedArgs.get(propName));
 				}
 			}
 			// factory method syntax
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -73,7 +73,6 @@ import org.springframework.beans.factory.config.TypedStringValue;
 import org.springframework.core.DefaultParameterNameDiscoverer;
 import org.springframework.core.MethodParameter;
 import org.springframework.core.NamedThreadLocal;
-import org.springframework.core.NativeDetector;
 import org.springframework.core.ParameterNameDiscoverer;
 import org.springframework.core.PriorityOrdered;
 import org.springframework.core.ResolvableType;
@@ -124,6 +123,14 @@ import org.springframework.util.StringUtils;
 public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFactory
 		implements AutowireCapableBeanFactory {

+	/**
+	 * Whether this environment lives within a native image.
+	 * Exposed as a private static field rather than in a {@code NativeImageDetector.inNativeImage()} static method due to https://github.com/oracle/graal/issues/2594.
+	 * @see <a href="https://github.com/oracle/graal/blob/master/sdk/src/org.graalvm.nativeimage/src/org/graalvm/nativeimage/ImageInfo.java">ImageInfo.java</a>
+	 */
+	private static final boolean IN_NATIVE_IMAGE = (System.getProperty("org.graalvm.nativeimage.imagecode") != null);
+
+
 	/** Strategy for creating bean instances. */
 	private InstantiationStrategy instantiationStrategy;

@@ -177,7 +184,7 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 		ignoreDependencyInterface(BeanNameAware.class);
 		ignoreDependencyInterface(BeanFactoryAware.class);
 		ignoreDependencyInterface(BeanClassLoaderAware.class);
-		if (NativeDetector.inNativeImage()) {
+		if (IN_NATIVE_IMAGE) {
 			this.instantiationStrategy = new SimpleInstantiationStrategy();
 		}
 		else {
@@ -246,15 +253,6 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 		this.allowCircularReferences = allowCircularReferences;
 	}

-	/**
-	 * Return whether to allow circular references between beans.
-	 * @since 5.3.10
-	 * @see #setAllowCircularReferences
-	 */
-	public boolean isAllowCircularReferences() {
-		return this.allowCircularReferences;
-	}
-
 	/**
 	 * Set whether to allow the raw injection of a bean instance into some other
 	 * bean's property, despite the injected bean eventually getting wrapped
@@ -273,15 +271,6 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 		this.allowRawInjectionDespiteWrapping = allowRawInjectionDespiteWrapping;
 	}

-	/**
-	 * Return whether to allow the raw injection of a bean instance.
-	 * @since 5.3.10
-	 * @see #setAllowRawInjectionDespiteWrapping
-	 */
-	public boolean isAllowRawInjectionDespiteWrapping() {
-		return this.allowRawInjectionDespiteWrapping;
-	}
-
 	/**
 	 * Ignore the given dependency type for autowiring:
 	 * for example, String. Default is none.
@@ -1033,11 +1022,6 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 				throw ex;
 			}
 			catch (BeanCreationException ex) {
-				// Don't swallow a linkage error since it contains a full stacktrace on
-				// first occurrence... and just a plain NoClassDefFoundError afterwards.
-				if (ex.contains(LinkageError.class)) {
-					throw ex;
-				}
 				// Instantiation failure, maybe too early...
 				if (logger.isDebugEnabled()) {
 					logger.debug("Bean creation exception on singleton FactoryBean type check: " + ex);
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -894,7 +894,7 @@ public abstract class AbstractBeanDefinition extends BeanMetadataAttributeAccess
 	}

 	/**
-	 * Return if there are property values defined for this bean.
+	 * Return if there are property values values defined for this bean.
 	 * @since 5.0.2
 	 */
 	@Override
@@ -1194,8 +1194,8 @@ public abstract class AbstractBeanDefinition extends BeanMetadataAttributeAccess
 				this.primary == that.primary &&
 				this.nonPublicAccessAllowed == that.nonPublicAccessAllowed &&
 				this.lenientConstructorResolution == that.lenientConstructorResolution &&
-				equalsConstructorArgumentValues(that) &&
-				equalsPropertyValues(that) &&
+				ObjectUtils.nullSafeEquals(this.constructorArgumentValues, that.constructorArgumentValues) &&
+				ObjectUtils.nullSafeEquals(this.propertyValues, that.propertyValues) &&
 				ObjectUtils.nullSafeEquals(this.methodOverrides, that.methodOverrides) &&
 				ObjectUtils.nullSafeEquals(this.factoryBeanName, that.factoryBeanName) &&
 				ObjectUtils.nullSafeEquals(this.factoryMethodName, that.factoryMethodName) &&
@@ -1208,30 +1208,12 @@ public abstract class AbstractBeanDefinition extends BeanMetadataAttributeAccess
 				super.equals(other));
 	}

-	private boolean equalsConstructorArgumentValues(AbstractBeanDefinition other) {
-		if (!hasConstructorArgumentValues()) {
-			return !other.hasConstructorArgumentValues();
-		}
-		return ObjectUtils.nullSafeEquals(this.constructorArgumentValues, other.constructorArgumentValues);
-	}
-
-	private boolean equalsPropertyValues(AbstractBeanDefinition other) {
-		if (!hasPropertyValues()) {
-			return !other.hasPropertyValues();
-		}
-		return ObjectUtils.nullSafeEquals(this.propertyValues, other.propertyValues);
-	}
-
 	@Override
 	public int hashCode() {
 		int hashCode = ObjectUtils.nullSafeHashCode(getBeanClassName());
 		hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.scope);
-		if (hasConstructorArgumentValues()) {
-			hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.constructorArgumentValues);
-		}
-		if (hasPropertyValues()) {
-			hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.propertyValues);
-		}
+		hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.constructorArgumentValues);
+		hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.propertyValues);
 		hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.factoryBeanName);
 		hashCode = 29 * hashCode + ObjectUtils.nullSafeHashCode(this.factoryMethodName);
 		hashCode = 29 * hashCode + super.hashCode();
@@ -1241,7 +1223,7 @@ public abstract class AbstractBeanDefinition extends BeanMetadataAttributeAccess
 	@Override
 	public String toString() {
 		StringBuilder sb = new StringBuilder("class [");
-		sb.append(getBeanClassName()).append(']');
+		sb.append(getBeanClassName()).append("]");
 		sb.append("; scope=").append(this.scope);
 		sb.append("; abstract=").append(this.abstractFlag);
 		sb.append("; lazyInit=").append(this.lazyInit);
@@ -250,7 +250,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 			throws BeansException {

 		String beanName = transformedBeanName(name);
-		Object beanInstance;
+		Object bean;

 		// Eagerly check singleton cache for manually registered singletons.
 		Object sharedInstance = getSingleton(beanName);
@@ -264,7 +264,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 					logger.trace("Returning cached instance of singleton bean '" + beanName + "'");
 				}
 			}
-			beanInstance = getObjectForBeanInstance(sharedInstance, name, beanName, null);
+			bean = getObjectForBeanInstance(sharedInstance, name, beanName, null);
 		}

 		else {
@@ -342,7 +342,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 							throw ex;
 						}
 					});
-					beanInstance = getObjectForBeanInstance(sharedInstance, name, beanName, mbd);
+					bean = getObjectForBeanInstance(sharedInstance, name, beanName, mbd);
 				}

 				else if (mbd.isPrototype()) {
@@ -355,7 +355,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 					finally {
 						afterPrototypeCreation(beanName);
 					}
-					beanInstance = getObjectForBeanInstance(prototypeInstance, name, beanName, mbd);
+					bean = getObjectForBeanInstance(prototypeInstance, name, beanName, mbd);
 				}

 				else {
@@ -377,7 +377,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 								afterPrototypeCreation(beanName);
 							}
 						});
-						beanInstance = getObjectForBeanInstance(scopedInstance, name, beanName, mbd);
+						bean = getObjectForBeanInstance(scopedInstance, name, beanName, mbd);
 					}
 					catch (IllegalStateException ex) {
 						throw new ScopeNotActiveException(beanName, scopeName, ex);
@@ -395,19 +395,14 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 			}
 		}

-		return adaptBeanInstance(name, beanInstance, requiredType);
-	}
-
-	@SuppressWarnings("unchecked")
-	<T> T adaptBeanInstance(String name, Object bean, @Nullable Class<?> requiredType) {
 		// Check if required type matches the type of the actual bean instance.
 		if (requiredType != null && !requiredType.isInstance(bean)) {
 			try {
-				Object convertedBean = getTypeConverter().convertIfNecessary(bean, requiredType);
+				T convertedBean = getTypeConverter().convertIfNecessary(bean, requiredType);
 				if (convertedBean == null) {
 					throw new BeanNotOfRequiredTypeException(name, requiredType, bean.getClass());
 				}
-				return (T) convertedBean;
+				return convertedBean;
 			}
 			catch (TypeMismatchException ex) {
 				if (logger.isTraceEnabled()) {
@@ -1293,8 +1288,10 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 	 * @param registry the PropertyEditorRegistry to initialize
 	 */
 	protected void registerCustomEditors(PropertyEditorRegistry registry) {
-		if (registry instanceof PropertyEditorRegistrySupport) {
-			((PropertyEditorRegistrySupport) registry).useConfigValueEditors();
+		PropertyEditorRegistrySupport registrySupport =
+				(registry instanceof PropertyEditorRegistrySupport ? (PropertyEditorRegistrySupport) registry : null);
+		if (registrySupport != null) {
+			registrySupport.useConfigValueEditors();
 		}
 		if (!this.propertyEditorRegistrars.isEmpty()) {
 			for (PropertyEditorRegistrar registrar : this.propertyEditorRegistrars) {
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -21,7 +21,6 @@ import java.util.function.Supplier;
 import org.springframework.beans.factory.config.AutowiredPropertyMarker;
 import org.springframework.beans.factory.config.BeanDefinitionCustomizer;
 import org.springframework.beans.factory.config.RuntimeBeanReference;
-import org.springframework.core.ResolvableType;
 import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;

@@ -103,7 +102,7 @@ public final class BeanDefinitionBuilder {
 	 * @param beanClass the {@code Class} of the bean that the definition is being created for
 	 */
 	public static BeanDefinitionBuilder rootBeanDefinition(Class<?> beanClass) {
-		return rootBeanDefinition(beanClass, (String) null);
+		return rootBeanDefinition(beanClass, null);
 	}

 	/**
@@ -118,30 +117,6 @@ public final class BeanDefinitionBuilder {
 		return builder;
 	}

-	/**
-	 * Create a new {@code BeanDefinitionBuilder} used to construct a {@link RootBeanDefinition}.
-	 * @param beanType the {@link ResolvableType type} of the bean that the definition is being created for
-	 * @param instanceSupplier a callback for creating an instance of the bean
-	 * @since 5.3.9
-	 */
-	public static <T> BeanDefinitionBuilder rootBeanDefinition(ResolvableType beanType, Supplier<T> instanceSupplier) {
-		RootBeanDefinition beanDefinition = new RootBeanDefinition();
-		beanDefinition.setTargetType(beanType);
-		beanDefinition.setInstanceSupplier(instanceSupplier);
-		return new BeanDefinitionBuilder(beanDefinition);
-	}
-
-	/**
-	 * Create a new {@code BeanDefinitionBuilder} used to construct a {@link RootBeanDefinition}.
-	 * @param beanClass the {@code Class} of the bean that the definition is being created for
-	 * @param instanceSupplier a callback for creating an instance of the bean
-	 * @since 5.3.9
-	 * @see #rootBeanDefinition(ResolvableType, Supplier)
-	 */
-	public static <T> BeanDefinitionBuilder rootBeanDefinition(Class<T> beanClass, Supplier<T> instanceSupplier) {
-		return rootBeanDefinition(ResolvableType.forClass(beanClass), instanceSupplier);
-	}
-
 	/**
 	 * Create a new {@code BeanDefinitionBuilder} used to construct a {@link ChildBeanDefinition}.
 	 * @param parentName the name of the parent bean
@@ -356,16 +331,6 @@ public final class BeanDefinitionBuilder {
 		return this;
 	}

-	/**
-	 * Set whether this bean is 'synthetic', that is, not defined by
-	 * the application itself.
-	 * @since 5.3.9
-	 */
-	public BeanDefinitionBuilder setSynthetic(boolean synthetic) {
-		this.beanDefinition.setSynthetic(synthetic);
-		return this;
-	}
-
 	/**
 	 * Apply the given customizers to the underlying bean definition.
 	 * @since 5.0
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -35,7 +35,6 @@ import org.springframework.cglib.proxy.Factory;
 import org.springframework.cglib.proxy.MethodInterceptor;
 import org.springframework.cglib.proxy.MethodProxy;
 import org.springframework.cglib.proxy.NoOp;
-import org.springframework.core.ResolvableType;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
@@ -245,10 +244,8 @@ public class CglibSubclassingInstantiationStrategy extends SimpleInstantiationSt
 				return (bean.equals(null) ? null : bean);
 			}
 			else {
-				// Find target bean matching the (potentially generic) method return type
-				ResolvableType genericReturnType = ResolvableType.forMethodReturnType(method);
-				return (argsToUse != null ? this.owner.getBeanProvider(genericReturnType).getObject(argsToUse) :
-						this.owner.getBeanProvider(genericReturnType).getObject());
+				return (argsToUse != null ? this.owner.getBean(method.getReturnType(), argsToUse) :
+						this.owner.getBean(method.getReturnType()));
 			}
 		}
 	}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -67,7 +67,6 @@ import org.springframework.util.StringUtils;

 /**
 * Delegate for resolving constructors and factory methods.
- *
 * <p>Performs constructor resolution through argument matching.
 *
 * @author Juergen Hoeller
@@ -86,7 +85,7 @@ class ConstructorResolver {
 	private static final Object[] EMPTY_ARGS = new Object[0];

 	/**
-	 * Marker for autowired arguments in a cached argument array, to be replaced
+	 * Marker for autowired arguments in a cached argument array, to be later replaced
 	 * by a {@linkplain #resolveAutowiredArgument resolved autowired argument}.
 	 */
 	private static final Object autowiredArgumentMarker = new Object();
@@ -150,7 +149,7 @@ class ConstructorResolver {
 				}
 			}
 			if (argsToResolve != null) {
-				argsToUse = resolvePreparedArguments(beanName, mbd, bw, constructorToUse, argsToResolve);
+				argsToUse = resolvePreparedArguments(beanName, mbd, bw, constructorToUse, argsToResolve, true);
 			}
 		}

@@ -277,12 +276,12 @@ class ConstructorResolver {
 					throw ex;
 				}
 				throw new BeanCreationException(mbd.getResourceDescription(), beanName,
-						"Could not resolve matching constructor on bean class [" + mbd.getBeanClassName() + "] " +
+						"Could not resolve matching constructor " +
 						"(hint: specify index/type/name arguments for simple parameters to avoid type ambiguities)");
 			}
 			else if (ambiguousConstructors != null && !mbd.isLenientConstructorResolution()) {
 				throw new BeanCreationException(mbd.getResourceDescription(), beanName,
-						"Ambiguous constructor matches found on bean class [" + mbd.getBeanClassName() + "] " +
+						"Ambiguous constructor matches found in bean '" + beanName + "' " +
 						"(hint: specify index/type/name arguments for simple parameters to avoid type ambiguities): " +
 						ambiguousConstructors);
 			}
@@ -411,7 +410,6 @@ class ConstructorResolver {
 			if (mbd.isSingleton() && this.beanFactory.containsSingleton(beanName)) {
 				throw new ImplicitlyAppearedSingletonException();
 			}
-			this.beanFactory.registerDependentBean(factoryBeanName, beanName);
 			factoryClass = factoryBean.getClass();
 			isStatic = false;
 		}
@@ -446,7 +444,7 @@ class ConstructorResolver {
 				}
 			}
 			if (argsToResolve != null) {
-				argsToUse = resolvePreparedArguments(beanName, mbd, bw, factoryMethodToUse, argsToResolve);
+				argsToUse = resolvePreparedArguments(beanName, mbd, bw, factoryMethodToUse, argsToResolve, true);
 			}
 		}

@@ -608,7 +606,7 @@ class ConstructorResolver {
 				}
 				String argDesc = StringUtils.collectionToCommaDelimitedString(argTypes);
 				throw new BeanCreationException(mbd.getResourceDescription(), beanName,
-						"No matching factory method found on class [" + factoryClass.getName() + "]: " +
+						"No matching factory method found: " +
 						(mbd.getFactoryBeanName() != null ?
 							"factory bean '" + mbd.getFactoryBeanName() + "'; " : "") +
 						"factory method '" + mbd.getFactoryMethodName() + "(" + argDesc + ")'. " +
@@ -619,12 +617,12 @@ class ConstructorResolver {
 			}
 			else if (void.class == factoryMethodToUse.getReturnType()) {
 				throw new BeanCreationException(mbd.getResourceDescription(), beanName,
-						"Invalid factory method '" + mbd.getFactoryMethodName() + "' on class [" +
-						factoryClass.getName() + "]: needs to have a non-void return type!");
+						"Invalid factory method '" + mbd.getFactoryMethodName() +
+						"': needs to have a non-void return type!");
 			}
 			else if (ambiguousFactoryMethods != null) {
 				throw new BeanCreationException(mbd.getResourceDescription(), beanName,
-						"Ambiguous factory method matches found on class [" + factoryClass.getName() + "] " +
+						"Ambiguous factory method matches found in bean '" + beanName + "' " +
 						"(hint: specify index/type/name arguments for simple parameters to avoid type ambiguities): " +
 						ambiguousFactoryMethods);
 			}
@@ -818,7 +816,7 @@ class ConstructorResolver {
 	 * Resolve the prepared arguments stored in the given bean definition.
 	 */
 	private Object[] resolvePreparedArguments(String beanName, RootBeanDefinition mbd, BeanWrapper bw,
-			Executable executable, Object[] argsToResolve) {
+			Executable executable, Object[] argsToResolve, boolean fallback) {

 		TypeConverter customConverter = this.beanFactory.getCustomTypeConverter();
 		TypeConverter converter = (customConverter != null ? customConverter : bw);
@@ -831,7 +829,7 @@ class ConstructorResolver {
 			Object argValue = argsToResolve[argIndex];
 			MethodParameter methodParam = MethodParameter.forExecutable(executable, argIndex);
 			if (argValue == autowiredArgumentMarker) {
-				argValue = resolveAutowiredArgument(methodParam, beanName, null, converter, true);
+				argValue = resolveAutowiredArgument(methodParam, beanName, null, converter, fallback);
 			}
 			else if (argValue instanceof BeanMetadataElement) {
 				argValue = valueResolver.resolveValueIfNecessary("constructor argument", argValue);
@@ -1231,7 +1231,8 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 		}

 		if (candidateNames.length == 1) {
-			return resolveNamedBean(candidateNames[0], requiredType, args);
+			String beanName = candidateNames[0];
+			return new NamedBeanHolder<>(beanName, (T) getBean(beanName, requiredType.toClass(), args));
 		}
 		else if (candidateNames.length > 1) {
 			Map<String, Object> candidates = CollectionUtils.newLinkedHashMap(candidateNames.length);
@@ -1250,11 +1251,8 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 			}
 			if (candidateName != null) {
 				Object beanInstance = candidates.get(candidateName);
-				if (beanInstance == null) {
-					return null;
-				}
-				if (beanInstance instanceof Class) {
-					return resolveNamedBean(candidateName, requiredType, args);
+				if (beanInstance == null || beanInstance instanceof Class) {
+					beanInstance = getBean(candidateName, requiredType.toClass(), args);
 				}
 				return new NamedBeanHolder<>(candidateName, (T) beanInstance);
 			}
@@ -1266,17 +1264,6 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 		return null;
 	}

-	@Nullable
-	private <T> NamedBeanHolder<T> resolveNamedBean(
-			String beanName, ResolvableType requiredType, @Nullable Object[] args) throws BeansException {
-
-		Object bean = getBean(beanName, null, args);
-		if (bean instanceof NullBean) {
-			return null;
-		}
-		return new NamedBeanHolder<T>(beanName, adaptBeanInstance(beanName, bean, requiredType.toClass()));
-	}
-
 	@Override
 	@Nullable
 	public Object resolveDependency(DependencyDescriptor descriptor, @Nullable String requestingBeanName,
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -119,16 +119,14 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 				}
 			}
 			else {
-				if (destroyMethod.getParameterCount() > 0) {
-					Class<?>[] paramTypes = destroyMethod.getParameterTypes();
-					if (paramTypes.length > 1) {
-						throw new BeanDefinitionValidationException("Method '" + destroyMethodName + "' of bean '" +
-								beanName + "' has more than one parameter - not supported as destroy method");
-					}
-					else if (paramTypes.length == 1 && boolean.class != paramTypes[0]) {
-						throw new BeanDefinitionValidationException("Method '" + destroyMethodName + "' of bean '" +
-								beanName + "' has a non-boolean parameter - not supported as destroy method");
-					}
+				Class<?>[] paramTypes = destroyMethod.getParameterTypes();
+				if (paramTypes.length > 1) {
+					throw new BeanDefinitionValidationException("Method '" + destroyMethodName + "' of bean '" +
+							beanName + "' has more than one parameter - not supported as destroy method");
+				}
+				else if (paramTypes.length == 1 && boolean.class != paramTypes[0]) {
+					throw new BeanDefinitionValidationException("Method '" + destroyMethodName + "' of bean '" +
+							beanName + "' has a non-boolean parameter - not supported as destroy method");
 				}
 				destroyMethod = ClassUtils.getInterfaceMethodIfPossible(destroyMethod);
 			}
@@ -172,6 +170,66 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 	}


+	/**
+	 * If the current value of the given beanDefinition's "destroyMethodName" property is
+	 * {@link AbstractBeanDefinition#INFER_METHOD}, then attempt to infer a destroy method.
+	 * Candidate methods are currently limited to public, no-arg methods named "close" or
+	 * "shutdown" (whether declared locally or inherited). The given BeanDefinition's
+	 * "destroyMethodName" is updated to be null if no such method is found, otherwise set
+	 * to the name of the inferred method. This constant serves as the default for the
+	 * {@code @Bean#destroyMethod} attribute and the value of the constant may also be
+	 * used in XML within the {@code <bean destroy-method="">} or {@code
+	 * <beans default-destroy-method="">} attributes.
+	 * <p>Also processes the {@link java.io.Closeable} and {@link java.lang.AutoCloseable}
+	 * interfaces, reflectively calling the "close" method on implementing beans as well.
+	 */
+	@Nullable
+	private String inferDestroyMethodIfNecessary(Object bean, RootBeanDefinition beanDefinition) {
+		String destroyMethodName = beanDefinition.getDestroyMethodName();
+		if (AbstractBeanDefinition.INFER_METHOD.equals(destroyMethodName) ||
+				(destroyMethodName == null && bean instanceof AutoCloseable)) {
+			// Only perform destroy method inference or Closeable detection
+			// in case of the bean not explicitly implementing DisposableBean
+			if (!(bean instanceof DisposableBean)) {
+				try {
+					return bean.getClass().getMethod(CLOSE_METHOD_NAME).getName();
+				}
+				catch (NoSuchMethodException ex) {
+					try {
+						return bean.getClass().getMethod(SHUTDOWN_METHOD_NAME).getName();
+					}
+					catch (NoSuchMethodException ex2) {
+						// no candidate destroy method found
+					}
+				}
+			}
+			return null;
+		}
+		return (StringUtils.hasLength(destroyMethodName) ? destroyMethodName : null);
+	}
+
+	/**
+	 * Search for all DestructionAwareBeanPostProcessors in the List.
+	 * @param processors the List to search
+	 * @return the filtered List of DestructionAwareBeanPostProcessors
+	 */
+	@Nullable
+	private List<DestructionAwareBeanPostProcessor> filterPostProcessors(
+			List<DestructionAwareBeanPostProcessor> processors, Object bean) {
+
+		List<DestructionAwareBeanPostProcessor> filteredPostProcessors = null;
+		if (!CollectionUtils.isEmpty(processors)) {
+			filteredPostProcessors = new ArrayList<>(processors.size());
+			for (DestructionAwareBeanPostProcessor processor : processors) {
+				if (processor.requiresDestruction(bean)) {
+					filteredPostProcessors.add(processor);
+				}
+			}
+		}
+		return filteredPostProcessors;
+	}
+
+
 	@Override
 	public void run() {
 		destroy();
@@ -326,50 +384,12 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 		if (bean instanceof DisposableBean || bean instanceof AutoCloseable) {
 			return true;
 		}
-		return inferDestroyMethodIfNecessary(bean, beanDefinition) != null;
-	}
-
-
-	/**
-	 * If the current value of the given beanDefinition's "destroyMethodName" property is
-	 * {@link AbstractBeanDefinition#INFER_METHOD}, then attempt to infer a destroy method.
-	 * Candidate methods are currently limited to public, no-arg methods named "close" or
-	 * "shutdown" (whether declared locally or inherited). The given BeanDefinition's
-	 * "destroyMethodName" is updated to be null if no such method is found, otherwise set
-	 * to the name of the inferred method. This constant serves as the default for the
-	 * {@code @Bean#destroyMethod} attribute and the value of the constant may also be
-	 * used in XML within the {@code <bean destroy-method="">} or {@code
-	 * <beans default-destroy-method="">} attributes.
-	 * <p>Also processes the {@link java.io.Closeable} and {@link java.lang.AutoCloseable}
-	 * interfaces, reflectively calling the "close" method on implementing beans as well.
-	 */
-	@Nullable
-	private static String inferDestroyMethodIfNecessary(Object bean, RootBeanDefinition beanDefinition) {
-		String destroyMethodName = beanDefinition.resolvedDestroyMethodName;
-		if (destroyMethodName == null) {
-			destroyMethodName = beanDefinition.getDestroyMethodName();
-			if (AbstractBeanDefinition.INFER_METHOD.equals(destroyMethodName) ||
-					(destroyMethodName == null && bean instanceof AutoCloseable)) {
-				// Only perform destroy method inference or Closeable detection
-				// in case of the bean not explicitly implementing DisposableBean
-				destroyMethodName = null;
-				if (!(bean instanceof DisposableBean)) {
-					try {
-						destroyMethodName = bean.getClass().getMethod(CLOSE_METHOD_NAME).getName();
-					}
-					catch (NoSuchMethodException ex) {
-						try {
-							destroyMethodName = bean.getClass().getMethod(SHUTDOWN_METHOD_NAME).getName();
-						}
-						catch (NoSuchMethodException ex2) {
-							// no candidate destroy method found
-						}
-					}
-				}
-			}
-			beanDefinition.resolvedDestroyMethodName = (destroyMethodName != null ? destroyMethodName : "");
+		String destroyMethodName = beanDefinition.getDestroyMethodName();
+		if (AbstractBeanDefinition.INFER_METHOD.equals(destroyMethodName)) {
+			return (ClassUtils.hasMethod(bean.getClass(), CLOSE_METHOD_NAME) ||
+					ClassUtils.hasMethod(bean.getClass(), SHUTDOWN_METHOD_NAME));
 		}
-		return (StringUtils.hasLength(destroyMethodName) ? destroyMethodName : null);
+		return StringUtils.hasLength(destroyMethodName);
 	}

 	/**
@@ -388,25 +408,4 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 		return false;
 	}

-	/**
-	 * Search for all DestructionAwareBeanPostProcessors in the List.
-	 * @param processors the List to search
-	 * @return the filtered List of DestructionAwareBeanPostProcessors
-	 */
-	@Nullable
-	private static List<DestructionAwareBeanPostProcessor> filterPostProcessors(
-			List<DestructionAwareBeanPostProcessor> processors, Object bean) {
-
-		List<DestructionAwareBeanPostProcessor> filteredPostProcessors = null;
-		if (!CollectionUtils.isEmpty(processors)) {
-			filteredPostProcessors = new ArrayList<>(processors.size());
-			for (DestructionAwareBeanPostProcessor processor : processors) {
-				if (processor.requiresDestruction(bean)) {
-					filteredPostProcessors.add(processor);
-				}
-			}
-		}
-		return filteredPostProcessors;
-	}
-
 }
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -19,25 +19,17 @@ package org.springframework.beans.factory.support;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;

-import org.springframework.core.ResolvableType;
 import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;

 /**
- * Represents an override of a method that looks up an object in the same IoC context,
- * either by bean name or by bean type (based on the declared method return type).
+ * Represents an override of a method that looks up an object in the same IoC context.
 *
- * <p>Methods eligible for lookup override may declare arguments in which case the
- * given arguments are passed to the bean retrieval operation.
+ * <p>Methods eligible for lookup override must not have arguments.
 *
 * @author Rod Johnson
 * @author Juergen Hoeller
 * @since 1.1
- * @see org.springframework.beans.factory.BeanFactory#getBean(String)
- * @see org.springframework.beans.factory.BeanFactory#getBean(Class)
- * @see org.springframework.beans.factory.BeanFactory#getBean(String, Object...)
- * @see org.springframework.beans.factory.BeanFactory#getBean(Class, Object...)
- * @see org.springframework.beans.factory.BeanFactory#getBeanProvider(ResolvableType)
 */
 public class LookupOverride extends MethodOverride {

@@ -51,8 +43,8 @@ public class LookupOverride extends MethodOverride {
 	/**
 	 * Construct a new LookupOverride.
 	 * @param methodName the name of the method to override
-	 * @param beanName the name of the bean in the current {@code BeanFactory} that the
-	 * overridden method should return (may be {@code null} for type-based bean retrieval)
+	 * @param beanName the name of the bean in the current {@code BeanFactory}
+	 * that the overridden method should return (may be {@code null})
 	 */
 	public LookupOverride(String methodName, @Nullable String beanName) {
 		super(methodName);
@@ -61,9 +53,9 @@ public class LookupOverride extends MethodOverride {

 	/**
 	 * Construct a new LookupOverride.
-	 * @param method the method declaration to override
-	 * @param beanName the name of the bean in the current {@code BeanFactory} that the
-	 * overridden method should return (may be {@code null} for type-based bean retrieval)
+	 * @param method the method to override
+	 * @param beanName the name of the bean in the current {@code BeanFactory}
+	 * that the overridden method should return (may be {@code null})
 	 */
 	public LookupOverride(Method method, @Nullable String beanName) {
 		super(method.getName());
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2012 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.
@@ -19,8 +19,9 @@ package org.springframework.beans.factory.support;
 import java.lang.reflect.Method;

 /**
- * Interface to be implemented by classes that can reimplement any method on an
- * IoC-managed object: the <b>Method Injection</b> form of Dependency Injection.
+ * Interface to be implemented by classes that can reimplement any method
+ * on an IoC-managed object: the <b>Method Injection</b> form of
+ * Dependency Injection.
 *
 * <p>Such methods may be (but need not be) abstract, in which case the
 * container will create a concrete subclass to instantiate.
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -25,7 +25,7 @@ import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;

 /**
- * Extension of {@link MethodOverride} that represents an arbitrary
+ * Extension of MethodOverride that represents an arbitrary
 * override of a method by the IoC container.
 *
 * <p>Any non-final method can be overridden, irrespective of its
@@ -45,7 +45,7 @@ public class ReplaceOverride extends MethodOverride {
 	/**
 	 * Construct a new ReplaceOverride.
 	 * @param methodName the name of the method to override
-	 * @param methodReplacerBeanName the bean name of the {@link MethodReplacer}
+	 * @param methodReplacerBeanName the bean name of the MethodReplacer
 	 */
 	public ReplaceOverride(String methodName, String methodReplacerBeanName) {
 		super(methodName);
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2020 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.
@@ -86,10 +86,6 @@ public class RootBeanDefinition extends AbstractBeanDefinition {
 	@Nullable
 	volatile Method factoryMethodToIntrospect;

-	/** Package-visible field for caching a resolved destroy method name (also for inferred). */
-	@Nullable
-	volatile String resolvedDestroyMethodName;
-
 	/** Common lock for the four constructor fields below. */
 	final Object constructorArgumentLock = new Object();

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2012 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.
@@ -23,9 +23,9 @@ import org.springframework.util.StringUtils;
 /**
 * Editor for {@code java.util.Locale}, to directly populate a Locale property.
 *
- * <p>Expects the same syntax as Locale's {@code toString()}, i.e. language +
+ * <p>Expects the same syntax as Locale's {@code toString}, i.e. language +
 * optionally country + optionally variant, separated by "_" (e.g. "en", "en_US").
- * Also accepts spaces as separators, as an alternative to underscores.
+ * Also accepts spaces as separators, as alternative to underscores.
 *
 * @author Juergen Hoeller
 * @since 26.05.2003
--- a/Show More
+++ b/Show More