Release v5.3.20

2026-06-08 17:33:33 +00:00 · 2022-05-11 06:55:19 +00:00
1165 changed files with 8416 additions and 14624 deletions
@@ -1,13 +1,10 @@
 name: "Validate Gradle Wrapper"
 on: [push, pull_request]

-permissions:
-  contents: read
-
 jobs:
  validation:
    name: "Validation"
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v2
      - uses: gradle/wrapper-validation-action@v1
@@ -21,14 +21,11 @@ classes/
 /build
 buildSrc/build
 /spring-*/build
-/spring-core/graalvm/build
 /spring-core/kotlin-coroutines/build
 /framework-bom/build
-/framework-docs/build
 /integration-tests/build
 /src/asciidoc/build
 target/
-/target/

 # Eclipse artifacts, including WTP generated manifests
 .classpath
@@ -46,6 +43,4 @@ atlassian-ide-plugin.xml
 .gradletasknamecache

 # VS Code
-.vscode/
-
-cached-antora-playbook.yml
+.vscode/
@@ -1,33 +1,23 @@
-Juergen Hoeller <jhoeller@vmware.com>
-Juergen Hoeller <jhoeller@vmware.com> <jhoeller@pivotal.io>
-Juergen Hoeller <jhoeller@vmware.com> <jhoeller@gopivotal.com>
-Rossen Stoyanchev <rstoyanchev@vmware.com>
-Rossen Stoyanchev <rstoyanchev@vmware.com> <rstoyanchev@pivotal.io>
-Rossen Stoyanchev <rstoyanchev@vmware.com> <rstoyanchev@gopivotal.com>
-Phillip Webb <pwebb@vmware.com>
-Phillip Webb <pwebb@vmware.com> <pwebb@pivotal.io>
-Phillip Webb <pwebb@vmware.com> <pwebb@gopivotal.com>
-Chris Beams <cbeams@vmware.com>
-Chris Beams <cbeams@vmware.com> <cbeams@pivotal.io>
-Chris Beams <cbeams@vmware.com> <cbeams@gopivotal.com>
-Arjen Poutsma <apoutsma@vmware.com>
-Arjen Poutsma <apoutsma@vmware.com> <apoutsma@pivotal.io>
-Arjen Poutsma <apoutsma@vmware.com> <apoutsma@gopivotal.com>
-Arjen Poutsma <apoutsma@vmware.com> <poutsma@mac.com>
-Oliver Drotbohm <odrotbohm@vmware.com>
-Oliver Drotbohm <odrotbohm@vmware.com> <ogierke@vmware.com>
-Oliver Drotbohm <odrotbohm@vmware.com> <ogierke@pivotal.io>
-Oliver Drotbohm <odrotbohm@vmware.com> <ogierke@gopivotal.com>
-Dave Syer <dsyer@vmware.com>
-Dave Syer <dsyer@vmware.com> <dsyer@pivotal.io>
-Dave Syer <dsyer@vmware.com> <dsyer@gopivotal.com>
-Dave Syer <dsyer@vmware.com> <david_syer@hotmail.com>
-Andy Clement <aclement@vmware.com>
-Andy Clement <aclement@vmware.com> <aclement@pivotal.io>
-Andy Clement <aclement@vmware.com> <aclement@gopivotal.com>
-Andy Clement <aclement@vmware.com> <andrew.clement@gmail.com>
-Sam Brannen <sbrannen@vmware.com>
-Sam Brannen <sbrannen@vmware.com> <sbrannen@pivotal.io>
-Sam Brannen <sbrannen@vmware.com> <sam@sambrannen.com>
+Juergen Hoeller <jhoeller@pivotal.io> jhoeller <jhoeller@vmware.com>
+<jhoeller@pivotal.io> <jhoeller@vmware.com>
+<jhoeller@pivotal.io> <jhoeller@gopivotal.com>
+<rstoyanchev@pivotal.io> <rstoyanchev@vmware.com>
+<rstoyanchev@pivotal.io> <rstoyanchev@gopivotal.com>
+<pwebb@pivotal.io> <pwebb@vmware.com>
+<pwebb@pivotal.io> <pwebb@gopivotal.com>
+<cbeams@pivotal.io> <cbeams@vmware.com>
+<cbeams@pivotal.io> <cbeams@gopivotal.com>
+<cbeams@pivotal.io> <cbeams@gmail.com>
+<apoutsma@pivotal.io> <apoutsma@vmware.com>
+<apoutsma@pivotal.io> <apoutsma@gopivotal.com>
+<apoutsma@pivotal.io> <poutsma@mac.com>
+<ogierke@pivotal.io> <ogierke@vmware.com>
+<ogierke@pivotal.io> <ogierke@gopivotal.com>
+<dsyer@pivotal.io> <dsyer@vmware.com>
+<dsyer@pivotal.io> <dsyer@gopivotal.com>
+<dsyer@pivotal.io> <david_syer@hotmail.com>
+<aclement@pivotal.io> <aclement@vmware.com>
+<aclement@pivotal.io> <aclement@gopivotal.com>
+<aclement@pivotal.io> <andrew.clement@gmail.com>
 <dmitry.katsubo@gmail.com> <dmitry.katsubo@gmai.com>
-Nick Williams <nicholas@nicholaswilliams.net>
+Nick Williams <nicholas@nicholaswilliams.net> Nicholas Williams <nicholas@nicholaswilliams.net>
@@ -1,3 +1,3 @@
 # Enable auto-env through the sdkman_auto_env config
 # Add key=value pairs of SDKs to use below
-java=8.0.372-librca
+java=8.0.332-librca
@@ -14,16 +14,16 @@ For access to artifacts or a distribution zip, see the [Spring Framework Artifac

 ## Documentation

-The Spring Framework maintains reference documentation ([published](https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/) and [source](src/docs/asciidoc)), GitHub [wiki pages](https://github.com/spring-projects/spring-framework/wiki), and an
+The Spring Framework maintains reference documentation ([published](https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/) and [source](src/docs/asciidoc)), Github [wiki pages](https://github.com/spring-projects/spring-framework/wiki), and an
 [API reference](https://docs.spring.io/spring-framework/docs/current/javadoc-api/). There are also [guides and tutorials](https://spring.io/guides) across Spring projects.

 ## Micro-Benchmarks

-See the [Micro-Benchmarks](https://github.com/spring-projects/spring-framework/wiki/Micro-Benchmarks) wiki page.
+See the [Micro-Benchmarks](https://github.com/spring-projects/spring-framework/wiki/Micro-Benchmarks) Wiki page.

 ## Build from Source

-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.
+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

@@ -1,17 +1,17 @@
 plugins {
 	id 'io.spring.dependency-management' version '1.0.11.RELEASE' apply false
 	id 'io.spring.nohttp' version '0.0.10'
-	id 'io.freefair.aspectj' version '6.2.0' apply false
+	id "io.freefair.aspectj" version '6.2.0' apply false
 	id 'org.jetbrains.dokka' version '1.6.10' apply false
 	id 'org.jetbrains.kotlin.jvm' version '1.5.32' apply false
-	id 'org.jetbrains.kotlin.plugin.serialization' version "1.5.32" apply false
+	id "org.jetbrains.kotlin.plugin.serialization" version "1.5.32" apply false
 	id 'org.asciidoctor.jvm.convert' version '3.3.2'
 	id 'org.asciidoctor.jvm.pdf' version '3.3.2'
-	id 'org.unbroken-dome.xjc' version '2.0.0' apply false
-	id 'com.github.ben-manes.versions' version '0.39.0'
-	id 'com.github.johnrengelman.shadow' version '7.0.0' apply false
+	id "org.unbroken-dome.xjc" version '2.0.0' apply false
+	id "com.github.ben-manes.versions" version '0.39.0'
+	id "com.github.johnrengelman.shadow" version '7.0.0' apply false
 	id 'de.undercouch.download' version '4.1.2'
-	id 'me.champeau.jmh' version "0.6.6" apply false
+	id "me.champeau.jmh" version "0.6.6" apply false
 }

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

 	dependencyManagement {
 		imports {
-			mavenBom "com.fasterxml.jackson:jackson-bom:2.12.7"
-			mavenBom "io.netty:netty-bom:4.1.93.Final"
-			mavenBom "io.projectreactor:reactor-bom:2020.0.33"
+			mavenBom "com.fasterxml.jackson:jackson-bom:2.12.6"
+			mavenBom "io.netty:netty-bom:4.1.77.Final"
+			mavenBom "io.projectreactor:reactor-bom:2020.0.19"
 			mavenBom "io.r2dbc:r2dbc-bom:Arabba-SR13"
-			mavenBom "io.rsocket:rsocket-bom:1.1.3"
-			mavenBom "org.eclipse.jetty:jetty-bom:9.4.51.v20230217"
+			mavenBom "io.rsocket:rsocket-bom:1.1.2"
+			mavenBom "org.eclipse.jetty:jetty-bom:9.4.46.v20220331"
 			mavenBom "org.jetbrains.kotlin:kotlin-bom:1.5.32"
 			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:5.8.2"
 		}
 		dependencies {
-			dependencySet(group: 'org.apache.logging.log4j', version: '2.20.0') {
+			dependencySet(group: 'org.apache.logging.log4j', version: '2.17.2') {
 				entry 'log4j-api'
 				entry 'log4j-core'
 				entry 'log4j-jul'
@@ -67,8 +67,8 @@ 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:3.1.5"
-			dependency "io.smallrye.reactive:mutiny:1.8.0"
+			dependency "io.reactivex.rxjava3:rxjava:3.1.4"
+			dependency "io.smallrye.reactive:mutiny:1.4.0"
 			dependency "io.projectreactor.tools:blockhound:1.0.6.RELEASE"

 			dependency "com.caucho:hessian:4.0.63"
@@ -79,11 +79,11 @@ configure(allprojects) { project ->
 			dependency "com.google.code.gson:gson:2.8.9"
 			dependency "com.google.protobuf:protobuf-java-util:3.19.3"
 			dependency "com.googlecode.protobuf-java-format:protobuf-java-format:1.4"
-			dependency("com.thoughtworks.xstream:xstream:1.4.19") {
+			dependency("com.thoughtworks.xstream:xstream:1.4.18") {
 				exclude group: "xpp3", name: "xpp3_min"
 				exclude group: "xmlpull", name: "xmlpull"
 			}
-			dependency "org.apache.johnzon:johnzon-jsonb:1.2.18"
+			dependency "org.apache.johnzon:johnzon-jsonb:1.2.16"
 			dependency("org.codehaus.jettison:jettison:1.3.8") {
 				exclude group: "stax", name: "stax-api"
 			}
@@ -92,11 +92,11 @@ configure(allprojects) { project ->
 				entry 'jibx-run'
 			}
 			dependency "org.ogce:xpp3:1.1.6"
-			dependency "org.yaml:snakeyaml:1.33"
+			dependency "org.yaml:snakeyaml:1.30"

-			dependency "com.h2database:h2:2.1.214"
+			dependency "com.h2database:h2:2.1.210"
 			dependency "com.github.ben-manes.caffeine:caffeine:2.9.3"
-			dependency "com.github.librepdf:openpdf:1.3.30"
+			dependency "com.github.librepdf:openpdf:1.3.27"
 			dependency "com.rometools:rome:1.18.0"
 			dependency "commons-io:commons-io:2.5"
 			dependency "io.vavr:vavr:0.10.4"
@@ -124,22 +124,22 @@ configure(allprojects) { project ->
 			dependency "org.ehcache:jcache:1.0.1"
 			dependency "org.ehcache:ehcache:3.4.0"
 			dependency "org.hibernate:hibernate-core:5.4.33.Final"
-			dependency "org.hibernate:hibernate-validator:6.2.5.Final"
+			dependency "org.hibernate:hibernate-validator:6.2.3.Final"
 			dependency "org.webjars:webjars-locator-core:0.48"
 			dependency "org.webjars:underscorejs:1.8.3"

-			dependencySet(group: 'org.apache.tomcat', version: '9.0.75') {
+			dependencySet(group: 'org.apache.tomcat', version: '9.0.62') {
 				entry 'tomcat-util'
 				entry('tomcat-websocket') {
 					exclude group: "org.apache.tomcat", name: "tomcat-servlet-api"
 					exclude group: "org.apache.tomcat", name: "tomcat-websocket-api"
 				}
 			}
-			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.75') {
+			dependencySet(group: 'org.apache.tomcat.embed', version: '9.0.62') {
 				entry 'tomcat-embed-core'
 				entry 'tomcat-embed-websocket'
 			}
-			dependencySet(group: 'io.undertow', version: '2.2.24.Final') {
+			dependencySet(group: 'io.undertow', version: '2.2.17.Final') {
 				entry 'undertow-core'
 				entry('undertow-servlet') {
 					exclude group: "org.jboss.spec.javax.servlet", name: "jboss-servlet-api_4.0_spec"
@@ -150,7 +150,7 @@ configure(allprojects) { project ->
 				}
 			}

-			dependency "org.eclipse.jetty:jetty-reactive-httpclient:1.1.13"
+			dependency "org.eclipse.jetty:jetty-reactive-httpclient:1.1.11"
 			dependency 'org.apache.httpcomponents.client5:httpclient5:5.1.3'
 			dependency 'org.apache.httpcomponents.core5:httpcore5-reactive:5.1.3'
 			dependency("org.apache.httpcomponents:httpclient:4.5.13") {
@@ -188,17 +188,17 @@ configure(allprojects) { project ->
 				exclude group: "junit", name: "junit"
 			}
 			dependency "org.testng:testng:7.4.0"
-			dependency "org.junit.support:testng-engine:1.0.4"
-			dependency "org.hamcrest:hamcrest:2.2"
+			dependency "org.junit.support:testng-engine:1.0.1"
+			dependency "org.hamcrest:hamcrest:2.1"
 			dependency "org.awaitility:awaitility:3.1.6"
-			dependency "org.assertj:assertj-core:3.24.2"
+			dependency "org.assertj:assertj-core:3.22.0"
 			dependencySet(group: 'org.xmlunit', version: '2.9.0') {
 				entry 'xmlunit-assertj'
 				entry('xmlunit-matchers') {
 					exclude group: "org.hamcrest", name: "hamcrest-core"
 				}
 			}
-			dependencySet(group: 'org.mockito', version: '4.9.0') {  // spring-beans tests fail with 4.10+
+			dependencySet(group: 'org.mockito', version: '4.5.1') {
 				entry('mockito-core') {
 					exclude group: "org.hamcrest", name: "hamcrest-core"
 				}
@@ -206,10 +206,10 @@ configure(allprojects) { project ->
 			}
 			dependency "io.mockk:mockk:1.12.1"

-			dependency("net.sourceforge.htmlunit:htmlunit:2.70.0") {
+			dependency("net.sourceforge.htmlunit:htmlunit:2.61.0") {
 				exclude group: "commons-logging", name: "commons-logging"
 			}
-			dependency("org.seleniumhq.selenium:htmlunit-driver:2.70.0") {
+			dependency("org.seleniumhq.selenium:htmlunit-driver:2.61.0") {
 				exclude group: "commons-logging", name: "commons-logging"
 			}
 			dependency("org.seleniumhq.selenium:selenium-java:3.141.59") {
@@ -217,8 +217,8 @@ configure(allprojects) { project ->
 				exclude group: "io.netty", name: "netty"
 			}
 			dependency "org.skyscreamer:jsonassert:1.5.0"
-			dependency "com.jayway.jsonpath:json-path:2.7.0"
-			dependency "org.bouncycastle:bcpkix-jdk18on:1.71"
+			dependency "com.jayway.jsonpath:json-path:2.6.0"
+			dependency "org.bouncycastle:bcpkix-jdk15on:1.66"

 			dependencySet(group: 'org.apache.tiles', version: '3.0.8') {
 				entry 'tiles-api'
@@ -238,7 +238,7 @@ configure(allprojects) { project ->
 			dependency "com.ibm.websphere:uow:6.0.2.17"
 			dependency "com.jamonapi:jamon:2.82"
 			dependency "joda-time:joda-time:2.10.13"
-			dependency "org.eclipse.persistence:org.eclipse.persistence.jpa:2.7.12"
+			dependency "org.eclipse.persistence:org.eclipse.persistence.jpa:2.7.10"
 			dependency "org.javamoney:moneta:1.3"

 			dependency "com.sun.activation:javax.activation:1.2.0"
@@ -340,7 +340,7 @@ configure([rootProject] + javaProjects) { project ->
 	}

 	checkstyle {
-		toolVersion = "10.9.3"
+		toolVersion = "10.1"
 		configDirectory.set(rootProject.file("src/checkstyle"))
 	}

@@ -377,9 +377,9 @@ configure([rootProject] + javaProjects) { project ->
 			"https://www.eclipse.org/aspectj/doc/released/aspectj5rt-api/",
 			"https://www.ehcache.org/apidocs/2.10.4/",
 			"https://www.quartz-scheduler.org/api/2.3.0/",
-			"https://www.javadoc.io/doc/com.fasterxml.jackson.core/jackson-core/2.12.7/",
-			"https://www.javadoc.io/doc/com.fasterxml.jackson.core/jackson-databind/2.12.7/",
-			"https://www.javadoc.io/doc/com.fasterxml.jackson.dataformat/jackson-dataformat-xml/2.12.7/",
+			"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://projectreactor.io/docs/test/release/api/",
 			"https://junit.org/junit4/javadoc/4.13.2/",
@@ -415,7 +415,7 @@ configure(rootProject) {
 		source.exclude "**/test-output/**"
 		allowlistFile = project.file("src/nohttp/allowlist.lines")
 		def rootPath = file(rootDir).toPath()
-		def projectDirs = allprojects.collect { it.projectDir } + "${rootDir}/spring-core-test" + "${rootDir}/buildSrc" + "${rootDir}/framework-docs"
+		def projectDirs = allprojects.collect { it.projectDir } + "${rootDir}/buildSrc"
 		projectDirs.forEach { dir ->
 			[ 'bin', 'build', 'out', '.settings' ]
 				.collect { rootPath.relativize(new File(dir, it).toPath()) }
@@ -426,10 +426,6 @@ configure(rootProject) {
 		}
 	}

-	tasks.named("checkstyleNohttp").configure {
-		maxHeapSize = "1g"
-	}
-
 	publishing {
 		publications {
 			mavenJava(MavenPublication) {
@@ -439,5 +435,4 @@ configure(rootProject) {
 			}
 		}
 	}
-
 }
@@ -15,6 +15,3 @@ changelog:
      sort: "title"
      labels:
        - "type: dependency-upgrade"
-  contributors:
-    exclude:
-      names: ["bclozel", "jhoeller", "poutsma", "rstoyanchev", "sbrannen", "sdeleuze", "snicoll"]
@@ -1,10 +1,11 @@
-FROM ubuntu:focal-20220922
+FROM ubuntu:focal-20220415

 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 JDK17 /opt/openjdk/java17

 ENV PATH $JAVA_HOME/bin:$PATH
@@ -3,12 +3,18 @@ set -e

 case "$1" in
 	java8)
-		 echo "https://github.com/bell-sw/Liberica/releases/download/8u372+7/bellsoft-jdk8u372+7-linux-amd64.tar.gz"
+		 echo "https://github.com/adoptium/temurin8-binaries/releases/download/jdk8u332-b09/OpenJDK8U-jdk_x64_linux_hotspot_8u332b09.tar.gz"
 	;;
-	java17)
-		echo "https://github.com/bell-sw/Liberica/releases/download/17.0.7+7/bellsoft-jdk17.0.7+7-linux-amd64.tar.gz"
+	java11)
+		 echo "https://github.com/adoptium/temurin11-binaries/releases/download/jdk-11.0.15%2B10/OpenJDK11U-jdk_x64_linux_hotspot_11.0.15_10.tar.gz"
 	;;
-	*)
+  java17)
+		 echo "https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.3%2B7/OpenJDK17U-jdk_x64_linux_hotspot_17.0.3_7.tar.gz"
+  ;;
+  java18)
+		 echo "https://github.com/adoptium/temurin18-binaries/releases/download/jdk-18.0.1%2B10/OpenJDK18U-jdk_x64_linux_hotspot_18.0.1_10.tar.gz"
+  ;;
+  *)
 		echo $"Unknown java version"
 		exit 1
 esac
@@ -20,7 +20,7 @@ curl https://raw.githubusercontent.com/spring-io/concourse-java-scripts/v0.0.4/c

 mkdir -p /opt/openjdk
 pushd /opt/openjdk > /dev/null
-for jdk in java8 java17
+for jdk in java8 java11 java17
 do
  JDK_URL=$( /get-jdk-url.sh $jdk )
  mkdir $jdk
@@ -8,4 +8,7 @@ milestone: "5.3.x"
 build-name: "spring-framework"
 pipeline-name: "spring-framework"
 concourse-url: "https://ci.spring.io"
+registry-mirror-host: docker.repo.spring.io
+registry-mirror-username: ((artifactory-username))
+registry-mirror-password: ((artifactory-password))
 task-timeout: 1h00m
@@ -23,6 +23,11 @@ anchors:
  docker-resource-source: &docker-resource-source
    username: ((docker-hub-username))
    password: ((docker-hub-password))
+    tag: ((milestone))
+  registry-mirror-vars: &registry-mirror-vars
+    registry-mirror-host: ((registry-mirror-host))
+    registry-mirror-username: ((registry-mirror-username))
+    registry-mirror-password: ((registry-mirror-password))
  slack-fail-params: &slack-fail-params
    text: >
      :concourse-failed: <https://ci.spring.io/teams/${BUILD_TEAM_NAME}/pipelines/${BUILD_PIPELINE_NAME}/jobs/${BUILD_JOB_NAME}/builds/${BUILD_NAME}|${BUILD_PIPELINE_NAME} ${BUILD_JOB_NAME} failed!>
@@ -43,31 +48,31 @@ resource_types:
 - name: registry-image
  type: registry-image
  source:
-    <<: *docker-resource-source
    repository: concourse/registry-image-resource
-    tag: 1.7.1
+    tag: 1.5.0
 - name: artifactory-resource
  type: registry-image
  source:
-    <<: *docker-resource-source
    repository: springio/artifactory-resource
-    tag: 0.0.18
+    tag: 0.0.17
 - name: github-release
  type: registry-image
  source:
-    <<: *docker-resource-source
    repository: concourse/github-release-resource
-    tag: 1.8.0
+    tag: 1.5.5
 - name: github-status-resource
  type: registry-image
  source:
-    <<: *docker-resource-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
  source:
-    <<: *docker-resource-source
    repository: cfcommunity/slack-notification-resource
    tag: latest
 resources:
@@ -96,7 +101,6 @@ resources:
  source:
    <<: *docker-resource-source
    repository: ((docker-hub-organization))/spring-framework-ci
-    tag: ((milestone))
 - name: artifactory-repo
  type: artifactory-resource
  icon: package-variant
@@ -105,6 +109,14 @@ 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
@@ -113,6 +125,14 @@ resources:
    access_token: ((github-ci-status-token))
    branch: ((branch))
    context: build
+- name: repo-status-jdk11-build
+  type: github-status-resource
+  icon: eye-check-outline
+  source:
+    repository: ((github-repo-name))
+    access_token: ((github-ci-status-token))
+    branch: ((branch))
+    context: jdk11-build
 - name: repo-status-jdk17-build
  type: github-status-resource
  icon: eye-check-outline
@@ -156,7 +176,7 @@ jobs:
        image: ci-image
      vars:
        ci-image-name: ci-image
-        <<: *docker-resource-source
+        <<: *registry-mirror-vars
    - put: ci-image
      params:
        image: ci-image/image.tar
@@ -217,6 +237,34 @@ jobs:
          "zip.type": "schema"
    get_params:
      threads: 8
+- name: jdk11-build
+  serial: true
+  public: true
+  plan:
+  - get: ci-image
+  - get: git-repo
+  - get: every-morning
+    trigger: true
+  - put: repo-status-jdk11-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))
+      params:
+        TEST_TOOLCHAIN: 11
+        <<: *build-project-task-params
+    on_failure:
+      do:
+      - put: repo-status-jdk11-build
+        params: { state: "failure", commit: "git-repo" }
+      - put: slack-alert
+        params:
+          <<: *slack-fail-params
+  - put: repo-status-jdk11-build
+    params: { state: "success", commit: "git-repo" }
 - name: jdk17-build
  serial: true
  public: true
@@ -234,7 +282,7 @@ jobs:
        privileged: true
        timeout: ((task-timeout))
        params:
-          TEST_TOOLCHAIN: 17
+          TEST_TOOLCHAIN: 15
          <<: *build-project-task-params
      on_failure:
        do:
@@ -245,6 +293,37 @@ jobs:
              <<: *slack-fail-params
    - put: repo-status-jdk17-build
      params: { state: "success", commit: "git-repo" }
+- name: build-pull-requests
+  serial: true
+  public: true
+  plan:
+    - get: ci-image
+    - get: git-repo
+      resource: git-pull-request
+      trigger: true
+      version: every
+    - 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
+      on_failure:
+        put: git-pull-request
+        params:
+          path: git-repo
+          status: failure
 - name: stage-milestone
  serial: true
  plan:
@@ -392,8 +471,10 @@ jobs:

 groups:
 - name: "builds"
-  jobs: ["build", "jdk17-build"]
+  jobs: ["build", "jdk11-build", "jdk17-build"]
 - name: "releases"
  jobs: ["stage-milestone", "stage-rc", "stage-release", "promote-milestone", "promote-rc", "promote-release", "create-github-release"]
 - name: "ci-images"
  jobs: ["build-ci-images"]
+- name: "pull-requests"
+  jobs: [ "build-pull-requests" ]
@@ -4,6 +4,6 @@ set -e
 source $(dirname $0)/common.sh

 pushd git-repo > /dev/null
-./gradlew -Dorg.gradle.internal.launcher.welcomeMessageEnabled=false -Porg.gradle.java.installations.fromEnv=JDK17 \
+./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
 popd > /dev/null
@@ -4,9 +4,11 @@ image_resource:
  type: registry-image
  source:
    repository: concourse/oci-build-task
-    tag: 0.10.0
-    username: ((docker-hub-username))
-    password: ((docker-hub-password))
+    tag: 0.9.1
+    registry_mirror:
+      host: ((registry-mirror-host))
+      username: ((registry-mirror-username))
+      password: ((registry-mirror-password))
 inputs:
  - name: ci-images-git-repo
 outputs:
@@ -1,5 +1,5 @@
-version=5.3.28
-org.gradle.jvmargs=-Xmx2048m
+version=5.3.20
+org.gradle.jvmargs=-Xmx1536M
 org.gradle.caching=true
 org.gradle.parallel=true
-kotlin.stdlib.default.dependency=false
+kotlin.stdlib.default.dependency=false
@@ -3,7 +3,7 @@ configurations {
 }

 dependencies {
-	asciidoctorExt("io.spring.asciidoctor:spring-asciidoctor-extensions-block-switch:0.6.1")
+	asciidoctorExt("io.spring.asciidoctor:spring-asciidoctor-extensions-block-switch:0.5.0")
 }

 repositories {
@@ -73,8 +73,9 @@ pluginManager.withPlugin("kotlin") {
 }

 task downloadResources(type: Download) {
-	src "https://repo.spring.io/artifactory/snapshot/io/spring/docresources/" +
-			"spring-doc-resources/0.2.6-SNAPSHOT/spring-doc-resources-0.2.6-20210308.231804-2.zip"
+	def version = "0.2.5"
+	src "https://repo.spring.io/release/io/spring/docresources/" +
+			"spring-doc-resources/$version/spring-doc-resources-${version}.zip"
 	dest project.file("$buildDir/docs/spring-doc-resources.zip")
 	onlyIfModified true
 	useETag "all"
@@ -152,7 +153,7 @@ asciidoctorPdf {
 task docsZip(type: Zip, dependsOn: ['api', 'asciidoctor', 'asciidoctorPdf', 'dokkaHtmlMultiModule']) {
 	group = "Distribution"
 	description = "Builds -${archiveClassifier} archive containing api and reference " +
-			"for deployment at https://docs.spring.io/spring-framework/docs/."
+			"for deployment at https://docs.spring.io/spring-framework/docs."

 	archiveBaseName.set("spring-framework")
 	archiveClassifier.set("docs")
@@ -72,7 +72,6 @@ eclipse.classpath.file.whenMerged {
 // Include project specific settings
 task eclipseSettings(type: Copy) {
 	from rootProject.files(
-		'src/eclipse/org.eclipse.core.resources.prefs',
 		'src/eclipse/org.eclipse.jdt.core.prefs',
 		'src/eclipse/org.eclipse.jdt.ui.prefs')
 	into project.file('.settings/')
@@ -80,7 +79,6 @@ task eclipseSettings(type: Copy) {
 }

 task cleanEclipseSettings(type: Delete) {
-	delete project.file('.settings/org.eclipse.core.resources.prefs')
 	delete project.file('.settings/org.eclipse.jdt.core.prefs')
 	delete project.file('.settings/org.eclipse.jdt.ui.prefs')
 }
@@ -81,10 +81,6 @@ plugins.withType(JavaPlugin) {
 			javaLauncher = javaToolchains.launcherFor {
 				languageVersion = testLanguageVersion
 			}
-			if(testLanguageVersion == JavaLanguageVersion.of(17)) {
-				jvmArgs(["--add-opens=java.base/java.lang=ALL-UNNAMED",
-						 "--add-opens=java.base/java.util=ALL-UNNAMED"])
-			}
 		}
 	}
 }
@@ -134,6 +130,21 @@ pluginManager.withPlugin("kotlin") {
 			}
 		}
 	}
+
+	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
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
@@ -31,6 +31,6 @@ You'll notice these files are already intentionally in .gitignore. The same poli

 ## FAQ

-Q. What about IntelliJ IDEA's own [Gradle support](https://www.jetbrains.com/help/idea/gradle.html)?
+Q. What about IntelliJ IDEA's own [Gradle support](https://confluence.jetbrains.net/display/IDEADEV/Gradle+integration)?

 A. Keep an eye on https://youtrack.jetbrains.com/issue/IDEA-53476
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -28,7 +28,7 @@ import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;

 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatException;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;

 /**
 * Integration tests for advice invocation order for advice configured via the
@@ -52,7 +52,7 @@ class AopNamespaceHandlerAdviceOrderIntegrationTests {
 			assertThat(aspect.invocations).containsExactly("around - start", "before", "around - end", "after", "after returning");

 			aspect.invocations.clear();
-			assertThatException().isThrownBy(() -> echo.echo(new Exception()));
+			assertThatExceptionOfType(Exception.class).isThrownBy(() -> echo.echo(new Exception()));
 			assertThat(aspect.invocations).containsExactly("around - start", "before", "around - end", "after", "after throwing");
 		}
 	}
@@ -69,7 +69,7 @@ class AopNamespaceHandlerAdviceOrderIntegrationTests {
 			assertThat(aspect.invocations).containsExactly("around - start", "before", "around - end", "after returning", "after");

 			aspect.invocations.clear();
-			assertThatException().isThrownBy(() -> echo.echo(new Exception()));
+			assertThatExceptionOfType(Exception.class).isThrownBy(() -> echo.echo(new Exception()));
 			assertThat(aspect.invocations).containsExactly("around - start", "before", "around - end", "after throwing", "after");
 		}
 	}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -38,7 +38,7 @@ import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.context.junit.jupiter.SpringJUnitConfig;

 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatException;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;

 /**
 * Integration tests for advice invocation order for advice configured via
@@ -65,7 +65,8 @@ class AspectJAutoProxyAdviceOrderIntegrationTests {
 			assertThat(aspect.invocations).containsExactly("around - start", "before", "after returning", "after", "around - end");

 			aspect.invocations.clear();
-			assertThatException().isThrownBy(() -> echo.echo(new Exception()));
+			assertThatExceptionOfType(Exception.class).isThrownBy(
+					() -> echo.echo(new Exception()));
 			assertThat(aspect.invocations).containsExactly("around - start", "before", "after throwing", "after", "around - end");
 		}
 	}
@@ -94,7 +95,8 @@ class AspectJAutoProxyAdviceOrderIntegrationTests {
 			assertThat(aspect.invocations).containsExactly("around - start", "before", "after returning", "after", "around - end");

 			aspect.invocations.clear();
-			assertThatException().isThrownBy(() -> echo.echo(new Exception()));
+			assertThatExceptionOfType(Exception.class).isThrownBy(
+					() -> echo.echo(new Exception()));
 			assertThat(aspect.invocations).containsExactly("around - start", "before", "after throwing", "after", "around - end");
 		}
 	}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -34,7 +34,7 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.stereotype.Repository;

 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatException;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;

 /**
 * Integration tests for the @EnableCaching annotation.
@@ -62,7 +62,8 @@ class EnableCachingIntegrationTests {
 		// this test is a bit fragile, but gets the job done, proving that an
 		// attempt was made to look up the AJ aspect. It's due to classpath issues
 		// in .integration-tests that it's not found.
-		assertThatException().isThrownBy(ctx::refresh)
+		assertThatExceptionOfType(Exception.class).isThrownBy(
+				ctx::refresh)
 			.withMessageContaining("AspectJCachingConfiguration");
 	}

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -45,7 +45,7 @@ import org.springframework.transaction.interceptor.BeanFactoryTransactionAttribu
 import org.springframework.transaction.testfixture.CallCountingTransactionManager;

 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatException;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;

 /**
 * Integration tests for the @EnableTransactionManagement annotation.
@@ -98,7 +98,7 @@ class EnableTransactionManagementIntegrationTests {
 		// this test is a bit fragile, but gets the job done, proving that an
 		// attempt was made to look up the AJ aspect. It's due to classpath issues
 		// in .integration-tests that it's not found.
-		assertThatException()
+		assertThatExceptionOfType(Exception.class)
 			.isThrownBy(ctx::refresh)
 			.withMessageContaining("AspectJJtaTransactionManagementConfiguration");
 	}
@@ -7,8 +7,8 @@ pluginManagement {
 }

 plugins {
-	id "com.gradle.enterprise" version "3.12.1"
-	id "io.spring.ge.conventions" version "0.0.13"
+	id "com.gradle.enterprise" version "3.9"
+	id "io.spring.ge.conventions" version "0.0.9"
 }

 include "spring-aop"
@@ -63,7 +63,7 @@ public interface Joinpoint {
 	/**
 	 * Return the static part of this joinpoint.
 	 * <p>The static part is an accessible object on which a chain of
-	 * interceptors is installed.
+	 * interceptors are installed.
 	 */
 	@Nonnull
 	AccessibleObject getStaticPart();
@@ -36,7 +36,7 @@ public interface IntroductionAwareMethodMatcher extends MethodMatcher {
 	 * @param targetClass the target class
 	 * @param hasIntroductions {@code true} if the object on whose behalf we are
 	 * asking is the subject on one or more introductions; {@code false} otherwise
-	 * @return whether this method matches statically
+	 * @return whether or not this method matches statically
 	 */
 	boolean matches(Method method, Class<?> targetClass, boolean hasIntroductions);

@@ -60,7 +60,7 @@ public interface MethodMatcher {
 	 * will be made.
 	 * @param method the candidate method
 	 * @param targetClass the target class
-	 * @return whether this method matches statically
+	 * @return whether or not this method matches statically
 	 */
 	boolean matches(Method method, Class<?> targetClass);

@@ -70,7 +70,7 @@ public interface MethodMatcher {
 	 * runtime even if the 2-arg matches method returns {@code true}?
 	 * <p>Can be invoked when an AOP proxy is created, and need not be invoked
 	 * again before each method invocation,
-	 * @return whether a runtime match via the 3-arg
+	 * @return whether or not a runtime match via the 3-arg
 	 * {@link #matches(java.lang.reflect.Method, Class, Object[])} method
 	 * is required if static matching passed
 	 */
@@ -18,7 +18,7 @@ package org.springframework.aop;

 /**
 * Marker interface implemented by all AOP proxies. Used to detect
- * whether objects are Spring-generated proxies.
+ * whether or not objects are Spring-generated proxies.
 *
 * @author Rob Harrop
 * @since 2.0.1
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -368,7 +368,7 @@ public abstract class AbstractAspectJAdvice implements Advice, AspectJPrecedence
 	 * to which argument name. There are multiple strategies for determining
 	 * this binding, which are arranged in a ChainOfResponsibility.
 	 */
-	public final void calculateArgumentBindings() {
+	public final synchronized void calculateArgumentBindings() {
 		// The simple case... nothing to bind.
 		if (this.argumentsIntrospected || this.parameterTypes.length == 0) {
 			return;
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -38,14 +38,6 @@ import org.springframework.util.StringUtils;
 * for an advice method from the pointcut expression, returning, and throwing clauses.
 * If an unambiguous interpretation is not available, it returns {@code null}.
 *
- * <h3>Algorithm Summary</h3>
- * <p>If an unambiguous binding can be deduced, then it is.
- * If the advice requirements cannot possibly be satisfied, then {@code null}
- * is returned. By setting the {@link #setRaiseExceptions(boolean) raiseExceptions}
- * property to {@code true}, descriptive exceptions will be thrown instead of
- * returning {@code null} in the case that the parameter names cannot be discovered.
- *
- * <h3>Algorithm Details</h3>
 * <p>This class interprets arguments in the following way:
 * <ol>
 * <li>If the first parameter of the method is of type {@link JoinPoint}
@@ -73,15 +65,15 @@ import org.springframework.util.StringUtils;
 * zero we proceed to the next stage. If {@code a} &gt; 1 then an
 * {@code AmbiguousBindingException} is raised. If {@code a} == 1,
 * and there are no unbound arguments of type {@code Annotation+},
- * then an {@code IllegalArgumentException} is raised. If there is
+ * then an {@code IllegalArgumentException} is raised. if there is
 * exactly one such argument, then the corresponding parameter name is
 * assigned the value from the pointcut expression.</li>
- * <li>If a {@code returningName} has been set, and there are no unbound arguments
+ * <li>If a returningName has been set, and there are no unbound arguments
 * then an {@code IllegalArgumentException} is raised. If there is
 * more than one unbound argument then an
 * {@code AmbiguousBindingException} is raised. If there is exactly
 * one unbound argument then the corresponding parameter name is assigned
- * the value of the {@code returningName}.</li>
+ * the value &lt;returningName&gt;.</li>
 * <li>If there remain unbound arguments, then the pointcut expression is
 * examined once more for {@code this}, {@code target}, and
 * {@code args} pointcut expressions used in the binding form (binding
@@ -107,12 +99,20 @@ import org.springframework.util.StringUtils;
 * <p>The behavior on raising an {@code IllegalArgumentException} or
 * {@code AmbiguousBindingException} is configurable to allow this discoverer
 * to be used as part of a chain-of-responsibility. By default the condition will
- * be logged and the {@link #getParameterNames(Method)} method will simply return
+ * be logged and the {@code getParameterNames(..)} method will simply return
 * {@code null}. If the {@link #setRaiseExceptions(boolean) raiseExceptions}
 * property is set to {@code true}, the conditions will be thrown as
 * {@code IllegalArgumentException} and {@code AmbiguousBindingException},
 * respectively.
 *
+ * <p>Was that perfectly clear? ;)
+ *
+ * <p>Short version: If an unambiguous binding can be deduced, then it is.
+ * If the advice requirements cannot possibly be satisfied, then {@code null}
+ * is returned. By setting the {@link #setRaiseExceptions(boolean) raiseExceptions}
+ * property to {@code true}, descriptive exceptions will be thrown instead of
+ * returning {@code null} in the case that the parameter names cannot be discovered.
+ *
 * @author Adrian Colyer
 * @author Juergen Hoeller
 * @since 2.0
@@ -158,7 +158,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov

 	/** The pointcut expression associated with the advice, as a simple String. */
 	@Nullable
-	private final String pointcutExpression;
+	private String pointcutExpression;

 	private boolean raiseExceptions;

@@ -197,7 +197,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov

 	/**
 	 * If {@code afterReturning} advice binds the return value, the
-	 * {@code returning} variable name must be specified.
+	 * returning variable name must be specified.
 	 * @param returningName the name of the returning variable
 	 */
 	public void setReturningName(@Nullable String returningName) {
@@ -206,17 +206,18 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov

 	/**
 	 * If {@code afterThrowing} advice binds the thrown value, the
-	 * {@code throwing} variable name must be specified.
+	 * throwing variable name must be specified.
 	 * @param throwingName the name of the throwing variable
 	 */
 	public void setThrowingName(@Nullable String throwingName) {
 		this.throwingName = throwingName;
 	}

+
 	/**
 	 * Deduce the parameter names for an advice method.
-	 * <p>See the {@link AspectJAdviceParameterNameDiscoverer class-level javadoc}
-	 * for this class for details on the algorithm used.
+	 * <p>See the {@link AspectJAdviceParameterNameDiscoverer class level javadoc}
+	 * for this class for details of the algorithm used.
 	 * @param method the target {@link Method}
 	 * @return the parameter names
 	 */
@@ -315,13 +316,13 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 	}


-	private void bindParameterName(int index, @Nullable String name) {
+	private void bindParameterName(int index, String name) {
 		this.parameterNameBindings[index] = name;
 		this.numberOfRemainingUnboundArguments--;
 	}

 	/**
-	 * If the first parameter is of type JoinPoint or ProceedingJoinPoint, bind "thisJoinPoint" as
+	 * If the first parameter is of type JoinPoint or ProceedingJoinPoint,bind "thisJoinPoint" as
 	 * parameter name and return true, else return false.
 	 */
 	private boolean maybeBindThisJoinPoint() {
@@ -366,8 +367,8 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 		}

 		if (throwableIndex == -1) {
-			throw new IllegalStateException("Binding of throwing parameter '" + this.throwingName +
-					"' could not be completed as no available arguments are a subtype of Throwable");
+			throw new IllegalStateException("Binding of throwing parameter '" + this.throwingName
+					+ "' could not be completed as no available arguments are a subtype of Throwable");
 		}
 		else {
 			bindParameterName(throwableIndex, this.throwingName);
@@ -399,6 +400,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 		}
 	}

+
 	/**
 	 * Parse the string pointcut expression looking for:
 	 * &#64;this, &#64;target, &#64;args, &#64;within, &#64;withincode, &#64;annotation.
@@ -463,7 +465,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 		}
 	}

-	/**
+	/*
 	 * If the token starts meets Java identifier conventions, it's in.
 	 */
 	@Nullable
@@ -531,6 +533,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 			}
 		}

+
 		if (varNames.size() > 1) {
 			throw new AmbiguousBindingException("Found " + varNames.size() +
 					" candidate this(), target() or args() variables but only one unbound argument slot");
@@ -606,7 +609,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 		// else varNames.size must be 0 and we have nothing to bind.
 	}

-	/**
+	/*
 	 * We've found the start of a binding pointcut at the given index into the
 	 * token array. Now we need to extract the pointcut body and return it.
 	 */
@@ -706,7 +709,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 		return false;
 	}

-	/**
+	/*
 	 * Return {@code true} if the given argument type is a subclass
 	 * of the given supertype.
 	 */
@@ -734,7 +737,7 @@ public class AspectJAdviceParameterNameDiscoverer implements ParameterNameDiscov
 		return count;
 	}

-	/**
+	/*
 	 * Find the argument index with the given type, and bind the given
 	 * {@code varName} in that position.
 	 */
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -378,7 +378,7 @@ public class AspectJExpressionPointcut extends AbstractExpressionPointcut
 		}
 		catch (Throwable ex) {
 			if (logger.isDebugEnabled()) {
-				logger.debug("Failed to evaluate join point for arguments " + Arrays.toString(args) +
+				logger.debug("Failed to evaluate join point for arguments " + Arrays.asList(args) +
 						" - falling back to non-match", ex);
 			}
 			return false;
@@ -39,7 +39,7 @@ import org.springframework.lang.Nullable;
 public interface AspectJAdvisorFactory {

 	/**
-	 * Determine whether the given class is an aspect, as reported
+	 * Determine whether or not the given class is an aspect, as reported
 	 * by AspectJ's {@link org.aspectj.lang.reflect.AjTypeSystem}.
 	 * <p>Will simply return {@code false} if the supposed aspect is
 	 * invalid (such as an extension of a concrete aspect class).
@@ -47,7 +47,7 @@ public interface AspectJAdvisorFactory {
 	 * such as those with unsupported instantiation models.
 	 * Use the {@link #validate} method to handle these cases if necessary.
 	 * @param clazz the supposed annotation-style AspectJ class
-	 * @return whether this class is recognized by AspectJ as an aspect class
+	 * @return whether or not this class is recognized by AspectJ as an aspect class
 	 */
 	boolean isAspect(Class<?> clazz);

@@ -67,7 +67,7 @@ public class AspectMetadata implements Serializable {

 	/**
 	 * Spring AOP pointcut corresponding to the per clause of the
-	 * aspect. Will be the {@code Pointcut.TRUE} canonical instance in the
+	 * aspect. Will be the Pointcut.TRUE canonical instance in the
 	 * case of a singleton, otherwise an AspectJExpressionPointcut.
 	 */
 	private final Pointcut perClausePointcut;
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -23,6 +23,10 @@ import org.springframework.lang.Nullable;
 * Subinterface of {@link org.springframework.aop.aspectj.AspectInstanceFactory}
 * that returns {@link AspectMetadata} associated with AspectJ-annotated classes.
 *
+ * <p>Ideally, AspectInstanceFactory would include this method itself, but because
+ * AspectMetadata uses Java-5-only {@link org.aspectj.lang.reflect.AjType},
+ * we need to split out this subinterface.
+ *
 * @author Rod Johnson
 * @since 2.0
 * @see AspectMetadata
@@ -31,13 +35,13 @@ import org.springframework.lang.Nullable;
 public interface MetadataAwareAspectInstanceFactory extends AspectInstanceFactory {

 	/**
-	 * Get the AspectJ AspectMetadata for this factory's aspect.
+	 * Return the AspectJ AspectMetadata for this factory's aspect.
 	 * @return the aspect metadata
 	 */
 	AspectMetadata getAspectMetadata();

 	/**
-	 * Get the best possible creation mutex for this factory.
+	 * Return the best possible creation mutex for this factory.
 	 * @return the mutex object (may be {@code null} for no mutex to use)
 	 * @since 4.3
 	 */
@@ -60,8 +60,8 @@ public class AspectJAwareAdvisorAutoProxyCreator extends AbstractAdvisorAutoProx
 	 * <li>Otherwise the advice declared first gets highest precedence (i.e., runs
 	 * first).</li>
 	 * </ul>
-	 * <p><b>Important:</b> Advisors are sorted in precedence order, from the highest
-	 * precedence to the lowest. "On the way in" to a join point, the highest precedence
+	 * <p><b>Important:</b> Advisors are sorted in precedence order, from highest
+	 * precedence to lowest. "On the way in" to a join point, the highest precedence
 	 * advisor should run first. "On the way out" of a join point, the highest
 	 * precedence advisor should run last.
 	 */
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -314,7 +314,7 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 	}

 	/**
-	 * Add all the given advisors to this proxy configuration.
+	 * Add all of the given advisors to this proxy configuration.
 	 * @param advisors the advisors to register
 	 */
 	public void addAdvisors(Advisor... advisors) {
@@ -322,7 +322,7 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 	}

 	/**
-	 * Add all the given advisors to this proxy configuration.
+	 * Add all of the given advisors to this proxy configuration.
 	 * @param advisors the advisors to register
 	 */
 	public void addAdvisors(Collection<Advisor> advisors) {
@@ -521,7 +521,6 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 		copy.copyFrom(this);
 		copy.targetSource = EmptyTargetSource.forClass(getTargetClass(), getTargetSource().isStatic());
 		copy.advisorChainFactory = this.advisorChainFactory;
-		copy.methodCache = this.methodCache;
 		copy.interfaces = new ArrayList<>(this.interfaces);
 		copy.advisors = new ArrayList<>(this.advisors);
 		return copy;
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -283,8 +283,8 @@ class CglibAopProxy implements AopProxy, Serializable {

 	private Callback[] getCallbacks(Class<?> rootClass) throws Exception {
 		// Parameters used for optimization choices...
-		boolean isFrozen = this.advised.isFrozen();
 		boolean exposeProxy = this.advised.isExposeProxy();
+		boolean isFrozen = this.advised.isFrozen();
 		boolean isStatic = this.advised.getTargetSource().isStatic();

 		// Choose an "aop" interceptor (used for AOP calls).
@@ -899,9 +899,9 @@ class CglibAopProxy implements AopProxy, Serializable {
 			// Proxy is not yet available, but that shouldn't matter.
 			List<?> chain = this.advised.getInterceptorsAndDynamicInterceptionAdvice(method, targetClass);
 			boolean haveAdvice = !chain.isEmpty();
-			boolean isFrozen = this.advised.isFrozen();
 			boolean exposeProxy = this.advised.isExposeProxy();
 			boolean isStatic = this.advised.getTargetSource().isStatic();
+			boolean isFrozen = this.advised.isFrozen();
 			if (haveAdvice || !isFrozen) {
 				// If exposing the proxy, then AOP_PROXY must be used.
 				if (exposeProxy) {
@@ -970,9 +970,6 @@ class CglibAopProxy implements AopProxy, Serializable {
 			if (this.advised.isExposeProxy() != otherAdvised.isExposeProxy()) {
 				return false;
 			}
-			if (this.advised.isOpaque() != otherAdvised.isOpaque()) {
-				return false;
-			}
 			if (this.advised.getTargetSource().isStatic() != otherAdvised.getTargetSource().isStatic()) {
 				return false;
 			}
@@ -1019,6 +1016,10 @@ class CglibAopProxy implements AopProxy, Serializable {
 				Advice advice = advisor.getAdvice();
 				hashCode = 13 * hashCode + advice.getClass().hashCode();
 			}
+			hashCode = 13 * hashCode + (this.advised.isFrozen() ? 1 : 0);
+			hashCode = 13 * hashCode + (this.advised.isExposeProxy() ? 1 : 0);
+			hashCode = 13 * hashCode + (this.advised.isOptimize() ? 1 : 0);
+			hashCode = 13 * hashCode + (this.advised.isOpaque() ? 1 : 0);
 			return hashCode;
 		}
 	}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -72,8 +72,8 @@ final class JdkDynamicAopProxy implements AopProxy, InvocationHandler, Serializa
 	 * NOTE: We could avoid the code duplication between this class and the CGLIB
 	 * proxies by refactoring "invoke" into a template method. However, this approach
 	 * adds at least 10% performance overhead versus a copy-paste solution, so we sacrifice
-	 * elegance for performance (we have a good test suite to ensure that the different
-	 * proxies behave the same :-)).
+	 * elegance for performance. (We have a good test suite to ensure that the different
+	 * proxies behave the same :-)
 	 * This way, we can also more easily take advantage of minor optimizations in each class.
 	 */

@@ -123,33 +123,7 @@ final class JdkDynamicAopProxy implements AopProxy, InvocationHandler, Serializa
 		if (logger.isTraceEnabled()) {
 			logger.trace("Creating JDK dynamic proxy: " + this.advised.getTargetSource());
 		}
-		return Proxy.newProxyInstance(determineClassLoader(classLoader), this.proxiedInterfaces, this);
-	}
-
-	/**
-	 * Determine whether the JDK bootstrap or platform loader has been suggested ->
-	 * use higher-level loader which can see Spring infrastructure classes instead.
-	 */
-	private ClassLoader determineClassLoader(@Nullable ClassLoader classLoader) {
-		if (classLoader == null) {
-			// JDK bootstrap loader -> use spring-aop ClassLoader instead.
-			return getClass().getClassLoader();
-		}
-		if (classLoader.getParent() == null) {
-			// Potentially the JDK platform loader on JDK 9+
-			ClassLoader aopClassLoader = getClass().getClassLoader();
-			ClassLoader aopParent = aopClassLoader.getParent();
-			while (aopParent != null) {
-				if (classLoader == aopParent) {
-					// Suggested ClassLoader is ancestor of spring-aop ClassLoader
-					// -> use spring-aop ClassLoader itself instead.
-					return aopClassLoader;
-				}
-				aopParent = aopParent.getParent();
-			}
-		}
-		// Regular case: use suggested ClassLoader as-is.
-		return classLoader;
+		return Proxy.newProxyInstance(classLoader, this.proxiedInterfaces, this);
 	}

 	/**
@@ -224,7 +198,7 @@ final class JdkDynamicAopProxy implements AopProxy, InvocationHandler, Serializa
 			// Get the interception chain for this method.
 			List<Object> chain = this.advised.getInterceptorsAndDynamicInterceptionAdvice(method, targetClass);

-			// Check whether we have any advice. If we don't, we can fall back on direct
+			// Check whether we have any advice. If we don't, we can fallback on direct
 			// reflective invocation of the target, and avoid creating a MethodInvocation.
 			if (chain.isEmpty()) {
 				// We can skip creating a MethodInvocation: just invoke the target directly
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -50,7 +50,7 @@ import org.springframework.util.ObjectUtils;

 /**
 * {@link org.springframework.beans.factory.FactoryBean} implementation that builds an
- * AOP proxy based on beans in a Spring {@link org.springframework.beans.factory.BeanFactory}.
+ * AOP proxy based on beans in Spring {@link org.springframework.beans.factory.BeanFactory}.
 *
 * <p>{@link org.aopalliance.intercept.MethodInterceptor MethodInterceptors} and
 * {@link org.springframework.aop.Advisor Advisors} are identified by a list of bean
@@ -61,11 +61,10 @@ import org.springframework.util.ObjectUtils;
 *
 * <p>Global interceptors and advisors can be added at the factory level. The specified
 * ones are expanded in an interceptor list where an "xxx*" entry is included in the
- * list, matching the given prefix with the bean names &mdash; for example, "global*"
- * would match both "globalBean1" and "globalBean2"; whereas, "*" would match all
- * defined interceptors. The matching interceptors get applied according to their
- * returned order value, if they implement the {@link org.springframework.core.Ordered}
- * interface.
+ * list, matching the given prefix with the bean names (e.g. "global*" would match
+ * both "globalBean1" and "globalBean2", "*" all defined interceptors). The matching
+ * interceptors get applied according to their returned order value, if they implement
+ * the {@link org.springframework.core.Ordered} interface.
 *
 * <p>Creates a JDK proxy when proxy interfaces are given, and a CGLIB proxy for the
 * actual target class if not. Note that the latter will only work if the target class
@@ -76,7 +75,7 @@ import org.springframework.util.ObjectUtils;
 * This won't work for existing prototype references, which are independent. However,
 * it will work for prototypes subsequently obtained from the factory. Changes to
 * interception will work immediately on singletons (including existing references).
- * However, to change interfaces or a target it's necessary to obtain a new instance
+ * However, to change interfaces or target it's necessary to obtain a new instance
 * from the factory. This means that singleton instances obtained from the factory
 * do not have the same object identity. However, they do have the same interceptors
 * and target, and changing any reference will change all objects.
@@ -407,7 +406,7 @@ public class ProxyFactoryBean extends ProxyCreatorSupport
 		if (namedBeanClass != null) {
 			return (Advisor.class.isAssignableFrom(namedBeanClass) || Advice.class.isAssignableFrom(namedBeanClass));
 		}
-		// Treat it as a target bean if we can't tell.
+		// Treat it as an target bean if we can't tell.
 		if (logger.isDebugEnabled()) {
 			logger.debug("Could not determine type of bean with name '" + beanName +
 					"' - assuming it is neither an Advisor nor an Advice");
@@ -425,7 +424,7 @@ public class ProxyFactoryBean extends ProxyCreatorSupport
 		if (!this.advisorChainInitialized && !ObjectUtils.isEmpty(this.interceptorNames)) {
 			if (this.beanFactory == null) {
 				throw new IllegalStateException("No BeanFactory available anymore (probably due to serialization) " +
-						"- cannot resolve interceptor names " + Arrays.toString(this.interceptorNames));
+						"- cannot resolve interceptor names " + Arrays.asList(this.interceptorNames));
 			}

 			// Globals can't be last unless we specified a targetSource using the property...
@@ -119,7 +119,7 @@ public abstract class AbstractAutoProxyCreator extends ProxyProcessorSupport
 	private AdvisorAdapterRegistry advisorAdapterRegistry = GlobalAdvisorAdapterRegistry.getInstance();

 	/**
-	 * Indicates whether the proxy should be frozen. Overridden from super
+	 * Indicates whether or not the proxy should be frozen. Overridden from super
 	 * to prevent the configuration from becoming frozen too early.
 	 */
 	private boolean freezeProxy = false;
@@ -145,9 +145,9 @@ public abstract class AbstractAutoProxyCreator extends ProxyProcessorSupport


 	/**
-	 * Set whether the proxy should be frozen, preventing advice
+	 * Set whether or not the proxy should be frozen, preventing advice
 	 * from being added to it once it is created.
-	 * <p>Overridden from the superclass to prevent the proxy configuration
+	 * <p>Overridden from the super class to prevent the proxy configuration
 	 * from being frozen before the proxy is created.
 	 */
 	@Override
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -34,7 +34,6 @@ import org.springframework.beans.factory.config.ConfigurableBeanFactory;
 import org.springframework.beans.factory.support.DefaultListableBeanFactory;
 import org.springframework.beans.factory.support.GenericBeanDefinition;
 import org.springframework.lang.Nullable;
-import org.springframework.util.Assert;

 /**
 * Convenient superclass for
@@ -82,11 +81,6 @@ public abstract class AbstractBeanFactoryBasedTargetSourceCreator
 		return this.beanFactory;
 	}

-	private ConfigurableBeanFactory getConfigurableBeanFactory() {
-		Assert.state(this.beanFactory != null, "BeanFactory not set");
-		return this.beanFactory;
-	}
-

 	//---------------------------------------------------------------------
 	// Implementation of the TargetSourceCreator interface
@@ -110,7 +104,7 @@ public abstract class AbstractBeanFactoryBasedTargetSourceCreator
 		// We need to override just this bean definition, as it may reference other beans
 		// and we're happy to take the parent's definition for those.
 		// Always use prototype scope if demanded.
-		BeanDefinition bd = getConfigurableBeanFactory().getMergedBeanDefinition(beanName);
+		BeanDefinition bd = this.beanFactory.getMergedBeanDefinition(beanName);
 		GenericBeanDefinition bdCopy = new GenericBeanDefinition(bd);
 		if (isPrototypeBased()) {
 			bdCopy.setScope(BeanDefinition.SCOPE_PROTOTYPE);
@@ -132,7 +126,7 @@ public abstract class AbstractBeanFactoryBasedTargetSourceCreator
 	protected DefaultListableBeanFactory getInternalBeanFactoryForBean(String beanName) {
 		synchronized (this.internalBeanFactories) {
 			return this.internalBeanFactories.computeIfAbsent(beanName,
-					name -> buildInternalBeanFactory(getConfigurableBeanFactory()));
+					name -> buildInternalBeanFactory(this.beanFactory));
 		}
 	}

@@ -1,10 +0,0 @@
-/**
- * Various {@link org.springframework.aop.framework.autoproxy.TargetSourceCreator}
- * implementations for use with Spring's AOP auto-proxying support.
- */
-@NonNullApi
-@NonNullFields
-package org.springframework.aop.framework.autoproxy.target;
-
-import org.springframework.lang.NonNullApi;
-import org.springframework.lang.NonNullFields;
@@ -56,7 +56,7 @@ public abstract class AbstractTraceInterceptor implements MethodInterceptor, Ser
 	protected transient Log defaultLogger = LogFactory.getLog(getClass());

 	/**
-	 * Indicates whether proxy class names should be hidden when using dynamic loggers.
+	 * Indicates whether or not proxy class names should be hidden when using dynamic loggers.
 	 * @see #setUseDynamicLogger
 	 */
 	private boolean hideProxyClassNames = false;
@@ -119,7 +119,7 @@ public abstract class AbstractTraceInterceptor implements MethodInterceptor, Ser


 	/**
-	 * Determines whether logging is enabled for the particular {@code MethodInvocation}.
+	 * Determines whether or not logging is enabled for the particular {@code MethodInvocation}.
 	 * If not, the method invocation proceeds as normal, otherwise the method invocation is passed
 	 * to the {@code invokeUnderTrace} method for handling.
 	 * @see #invokeUnderTrace(org.aopalliance.intercept.MethodInvocation, org.apache.commons.logging.Log)
@@ -36,7 +36,7 @@ public interface AsyncUncaughtExceptionHandler {
 	 * Handle the given uncaught exception thrown from an asynchronous method.
 	 * @param ex the exception thrown from the asynchronous method
 	 * @param method the asynchronous method
-	 * @param params the parameters used to invoke the method
+	 * @param params the parameters used to invoked the method
 	 */
 	void handleUncaughtException(Throwable ex, Method method, Object... params);

@@ -217,7 +217,7 @@ public abstract class AopUtils {
 	 * out a pointcut for a class.
 	 * @param pc the static or dynamic pointcut to check
 	 * @param targetClass the class to test
-	 * @param hasIntroductions whether the advisor chain
+	 * @param hasIntroductions whether or not the advisor chain
 	 * for this bean includes any introductions
 	 * @return whether the pointcut can apply on any method
 	 */
@@ -261,7 +261,7 @@ public abstract class AopUtils {
 	/**
 	 * Can the given advisor apply at all on the given class?
 	 * This is an important test as it can be used to optimize
-	 * out an advisor for a class.
+	 * out a advisor for a class.
 	 * @param advisor the advisor to check
 	 * @param targetClass class we're testing
 	 * @return whether the pointcut can apply on any method
@@ -272,11 +272,11 @@ public abstract class AopUtils {

 	/**
 	 * Can the given advisor apply at all on the given class?
-	 * <p>This is an important test as it can be used to optimize out an advisor for a class.
+	 * <p>This is an important test as it can be used to optimize out a advisor for a class.
 	 * This version also takes into account introductions (for IntroductionAwareMethodMatchers).
 	 * @param advisor the advisor to check
 	 * @param targetClass class we're testing
-	 * @param hasIntroductions whether the advisor chain for this bean includes
+	 * @param hasIntroductions whether or not the advisor chain for this bean includes
 	 * any introductions
 	 * @return whether the pointcut can apply on any method
 	 */
@@ -43,7 +43,7 @@ public class DefaultPointcutAdvisor extends AbstractGenericPointcutAdvisor imple

 	/**
 	 * Create an empty DefaultPointcutAdvisor.
-	 * <p>Advice must be set before using setter methods.
+	 * <p>Advice must be set before use using setter methods.
 	 * Pointcut will normally be set also, but defaults to {@code Pointcut.TRUE}.
 	 */
 	public DefaultPointcutAdvisor() {
@@ -90,7 +90,7 @@ public abstract class MethodMatchers {
 	 * @param targetClass the target class
 	 * @param hasIntroductions {@code true} if the object on whose behalf we are
 	 * asking is the subject on one or more introductions; {@code false} otherwise
-	 * @return whether this method matches statically
+	 * @return whether or not this method matches statically
 	 */
 	public static boolean matches(MethodMatcher mm, Method method, Class<?> targetClass, boolean hasIntroductions) {
 		Assert.notNull(mm, "MethodMatcher must not be null");
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -24,8 +24,6 @@ import org.apache.commons.logging.LogFactory;
 import org.springframework.aop.TargetSource;
 import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.BeanFactoryAware;
-import org.springframework.lang.Nullable;
-import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;

 /**
@@ -59,18 +57,15 @@ public abstract class AbstractBeanFactoryBasedTargetSource implements TargetSour
 	protected final Log logger = LogFactory.getLog(getClass());

 	/** Name of the target bean we will create on each invocation. */
-	@Nullable
 	private String targetBeanName;

 	/** Class of the target. */
-	@Nullable
 	private volatile Class<?> targetClass;

 	/**
 	 * BeanFactory that owns this TargetSource. We need to hold onto this
 	 * reference so that we can create new prototype instances as necessary.
 	 */
-	@Nullable
 	private BeanFactory beanFactory;


@@ -91,7 +86,6 @@ public abstract class AbstractBeanFactoryBasedTargetSource implements TargetSour
 	 * Return the name of the target bean in the factory.
 	 */
 	public String getTargetBeanName() {
-		Assert.state(this.targetBeanName != null, "Target bean name not set");
 		return this.targetBeanName;
 	}

@@ -121,13 +115,11 @@ public abstract class AbstractBeanFactoryBasedTargetSource implements TargetSour
 	 * Return the owning BeanFactory.
 	 */
 	public BeanFactory getBeanFactory() {
-		Assert.state(this.beanFactory != null, "BeanFactory not set");
 		return this.beanFactory;
 	}


 	@Override
-	@Nullable
 	public Class<?> getTargetClass() {
 		Class<?> targetClass = this.targetClass;
 		if (targetClass != null) {
@@ -136,7 +128,7 @@ public abstract class AbstractBeanFactoryBasedTargetSource implements TargetSour
 		synchronized (this) {
 			// Full check within synchronization, entering the BeanFactory interaction algorithm only once...
 			targetClass = this.targetClass;
-			if (targetClass == null && this.beanFactory != null && this.targetBeanName != null) {
+			if (targetClass == null && this.beanFactory != null) {
 				// Determine type of the target bean.
 				targetClass = this.beanFactory.getType(this.targetBeanName);
 				if (targetClass == null) {
@@ -190,16 +182,18 @@ public abstract class AbstractBeanFactoryBasedTargetSource implements TargetSour

 	@Override
 	public int hashCode() {
-		return getClass().hashCode() * 13 + ObjectUtils.nullSafeHashCode(this.targetBeanName);
+		int hashCode = getClass().hashCode();
+		hashCode = 13 * hashCode + ObjectUtils.nullSafeHashCode(this.beanFactory);
+		hashCode = 13 * hashCode + ObjectUtils.nullSafeHashCode(this.targetBeanName);
+		return hashCode;
 	}

 	@Override
 	public String toString() {
 		StringBuilder sb = new StringBuilder(getClass().getSimpleName());
 		sb.append(" for target bean '").append(this.targetBeanName).append('\'');
-		Class<?> targetClass = this.targetClass;
-		if (targetClass != null) {
-			sb.append(" of type [").append(targetClass.getName()).append(']');
+		if (this.targetClass != null) {
+			sb.append(" of type [").append(this.targetClass.getName()).append(']');
 		}
 		return sb.toString();
 	}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -46,7 +46,6 @@ public abstract class AbstractLazyCreationTargetSource implements TargetSource {
 	protected final Log logger = LogFactory.getLog(getClass());

 	/** The lazily initialized target object. */
-	@Nullable
 	private Object lazyTarget;


@@ -37,7 +37,7 @@ import org.springframework.lang.Nullable;
 * {@link AbstractPrototypeBasedTargetSource} can be used to create objects
 * in order to put them into the pool.
 *
- * <p>Subclasses must also implement some monitoring methods from the
+ * <p>Subclasses must also implement some of the monitoring methods from the
 * {@link PoolingConfig} interface. The {@link #getPoolingConfigMixin()} method
 * makes these stats available on proxied objects through an IntroductionAdvisor.
 *
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -70,7 +70,6 @@ public final class EmptyTargetSource implements TargetSource, Serializable {
 	// Instance implementation
 	//---------------------------------------------------------------------

-	@Nullable
 	private final Class<?> targetClass;

 	private final boolean isStatic;
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -95,7 +95,8 @@ public class HotSwappableTargetSource implements TargetSource, Serializable {


 	/**
-	 * Two HotSwappableTargetSources are equal if the current target objects are equal.
+	 * Two HotSwappableTargetSources are equal if the current target
+	 * objects are equal.
 	 */
 	@Override
 	public boolean equals(Object other) {
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -82,8 +82,14 @@ public class SingletonTargetSource implements TargetSource, Serializable {
 	 */
 	@Override
 	public boolean equals(Object other) {
-		return (this == other || (other instanceof SingletonTargetSource &&
-				this.target.equals(((SingletonTargetSource) other).target)));
+		if (this == other) {
+			return true;
+		}
+		if (!(other instanceof SingletonTargetSource)) {
+			return false;
+		}
+		SingletonTargetSource otherTargetSource = (SingletonTargetSource) other;
+		return this.target.equals(otherTargetSource.target);
 	}

 	/**
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -58,12 +58,7 @@ public class ThreadLocalTargetSource extends AbstractPrototypeBasedTargetSource
 	 * is meant to be per thread per instance of the ThreadLocalTargetSource class.
 	 */
 	private final ThreadLocal<Object> targetInThread =
-			new NamedThreadLocal<Object>("Thread-local instance of bean") {
-				@Override
-				public String toString() {
-					return super.toString() + " '" + getTargetBeanName() + "'";
-				}
-			};
+			new NamedThreadLocal<>("Thread-local instance of bean '" + getTargetBeanName() + "'");

 	/**
 	 * Set of managed targets, enabling us to keep track of the targets we've created.
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -142,11 +142,11 @@ public class TrickyAspectJPointcutExpressionTests {
 	@Retention(RetentionPolicy.RUNTIME)
 	@Documented
 	@Inherited
-	@interface Log {
+	public static @interface Log {
 	}


-	public interface TestService {
+	public static interface TestService {

 		public String sayHello();
 	}
@@ -931,7 +931,7 @@ abstract class AbstractMakeModifiable {
 			return setter.getDeclaringClass().getMethod(getterName);
 		}
 		catch (NoSuchMethodException ex) {
-			// must be write-only
+			// must be write only
 			return null;
 		}
 	}
@@ -48,7 +48,7 @@ public class IntroductionBenchmarkTests {
 		}
 	}

-	public interface Counter {
+	public static interface Counter {
 		int getCount();
 	}

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -16,10 +16,7 @@

 package org.springframework.aop.framework;

-import java.sql.SQLException;
-import java.sql.Savepoint;
 import java.util.ArrayList;
-import java.util.Date;
 import java.util.List;

 import javax.accessibility.Accessible;
@@ -47,7 +44,7 @@ import org.springframework.core.annotation.Order;
 import org.springframework.core.testfixture.TimeStamped;

 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatRuntimeException;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;

 /**
 * Also tests AdvisedSupport and ProxyCreatorSupport superclasses.
@@ -280,7 +277,7 @@ public class ProxyFactoryTests {

 		assertThat(config.getAdvisors().length == oldCount).isTrue();

-		assertThatRuntimeException()
+		assertThatExceptionOfType(RuntimeException.class)
 				.as("Existing object won't implement this interface any more")
 				.isThrownBy(ts::getTimeStamp); // Existing reference will fail

@@ -383,43 +380,6 @@ public class ProxyFactoryTests {
 		assertThat(proxy.getName()).isEqualTo("tb");
 	}

-	@Test
-	public void testCharSequenceProxy() {
-		CharSequence target = "test";
-		ProxyFactory pf = new ProxyFactory(target);
-		ClassLoader cl = target.getClass().getClassLoader();
-		CharSequence proxy = (CharSequence) pf.getProxy(cl);
-		assertThat(proxy.toString()).isEqualTo(target);
-	}
-
-	@Test
-	public void testDateProxy() {
-		Date target = new Date();
-		ProxyFactory pf = new ProxyFactory(target);
-		pf.setProxyTargetClass(true);
-		ClassLoader cl = target.getClass().getClassLoader();
-		Date proxy = (Date) pf.getProxy(cl);
-		assertThat(proxy.getTime()).isEqualTo(target.getTime());
-	}
-
-	@Test
-	public void testJdbcSavepointProxy() throws SQLException {
-		Savepoint target = new Savepoint() {
-			@Override
-			public int getSavepointId() throws SQLException {
-				return 1;
-			}
-			@Override
-			public String getSavepointName() throws SQLException {
-				return "sp";
-			}
-		};
-		ProxyFactory pf = new ProxyFactory(target);
-		ClassLoader cl = Savepoint.class.getClassLoader();
-		Savepoint proxy = (Savepoint) pf.getProxy(cl);
-		assertThat(proxy.getSavepointName()).isEqualTo("sp");
-	}
-

 	@Order(2)
 	public static class A implements Runnable {
@@ -431,7 +391,7 @@ public class ProxyFactoryTests {


 	@Order(1)
-	public static class B implements Runnable {
+	public static class B implements Runnable{

 		@Override
 		public void run() {
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -26,7 +26,6 @@ import org.junit.jupiter.api.Test;
 import org.springframework.aop.testfixture.advice.MyThrowsHandler;

 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatException;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
 import static org.mockito.BDDMockito.given;
@@ -64,7 +63,9 @@ public class ThrowsAdviceInterceptorTests {
 		Exception ex = new Exception();
 		MethodInvocation mi = mock(MethodInvocation.class);
 		given(mi.proceed()).willThrow(ex);
-		assertThatException().isThrownBy(() -> ti.invoke(mi)).isSameAs(ex);
+		assertThatExceptionOfType(Exception.class).isThrownBy(() ->
+				ti.invoke(mi))
+			.isSameAs(ex);
 		assertThat(th.getCalls()).isEqualTo(0);
 	}

@@ -307,7 +307,7 @@ public class DelegatingIntroductionInterceptorTests {
 	}


-	private interface SubTimeStamped extends TimeStamped {
+	private static interface SubTimeStamped extends TimeStamped {
 	}

 }
@@ -35,7 +35,7 @@ public abstract aspect AbstractDependencyInjectionAspect {
 			mostSpecificSubTypeConstruction() && !preConstructionConfiguration();

 	/**
-	 * Select least specific supertype that is marked for DI
+	 * Select least specific super type that is marked for DI
 	 * (so that injection occurs only once with pre-construction injection).
 	 */
 	public abstract pointcut leastSpecificSuperTypeConstruction();
@@ -26,7 +26,7 @@ import org.springframework.context.annotation.Import;

 /**
 * Signals the current application context to apply dependency injection to
- * non-managed classes that are instantiated outside the Spring bean factory
+ * non-managed classes that are instantiated outside of the Spring bean factory
 * (typically classes annotated with the
 * {@link org.springframework.beans.factory.annotation.Configurable @Configurable}
 * annotation).
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -22,9 +22,7 @@ import org.junit.jupiter.api.Test;
 import org.springframework.transaction.testfixture.CallCountingTransactionManager;

 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatException;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
-import static org.assertj.core.api.Assertions.assertThatRuntimeException;

 /**
 * @author Rod Johnson
@@ -106,44 +104,44 @@ public class TransactionAspectTests {
 	@Test
 	public void defaultCommitOnAnnotatedClass() throws Throwable {
 		Exception ex = new Exception();
-		assertThatException()
-			.isThrownBy(() -> testRollback(() -> annotationOnlyOnClassWithNoInterface.echo(ex), false))
+		assertThatExceptionOfType(Exception.class).isThrownBy(() ->
+				testRollback(() -> annotationOnlyOnClassWithNoInterface.echo(ex), false))
 			.isSameAs(ex);
 	}

 	@Test
 	public void defaultRollbackOnAnnotatedClass() throws Throwable {
 		RuntimeException ex = new RuntimeException();
-		assertThatRuntimeException()
-			.isThrownBy(() -> testRollback(() -> annotationOnlyOnClassWithNoInterface.echo(ex), true))
+		assertThatExceptionOfType(RuntimeException.class).isThrownBy(() ->
+				testRollback(() -> annotationOnlyOnClassWithNoInterface.echo(ex), true))
 			.isSameAs(ex);
 	}

 	@Test
 	public void defaultCommitOnSubclassOfAnnotatedClass() throws Throwable {
 		Exception ex = new Exception();
-		assertThatException()
-			.isThrownBy(() -> testRollback(() -> new SubclassOfClassWithTransactionalAnnotation().echo(ex), false))
+		assertThatExceptionOfType(Exception.class).isThrownBy(() ->
+				testRollback(() -> new SubclassOfClassWithTransactionalAnnotation().echo(ex), false))
 			.isSameAs(ex);
 	}

 	@Test
 	public void defaultCommitOnSubclassOfClassWithTransactionalMethodAnnotated() throws Throwable {
 		Exception ex = new Exception();
-		assertThatException()
-			.isThrownBy(() -> testRollback(() -> new SubclassOfClassWithTransactionalMethodAnnotation().echo(ex), false))
+		assertThatExceptionOfType(Exception.class).isThrownBy(() ->
+				testRollback(() -> new SubclassOfClassWithTransactionalMethodAnnotation().echo(ex), false))
 			.isSameAs(ex);
 	}

 	@Test
 	public void noCommitOnImplementationOfAnnotatedInterface() throws Throwable {
-		Exception ex = new Exception();
+		final Exception ex = new Exception();
 		testNotTransactional(() -> new ImplementsAnnotatedInterface().echo(ex), ex);
 	}

 	@Test
 	public void noRollbackOnImplementationOfAnnotatedInterface() throws Throwable {
-		Exception rollbackProvokingException = new RuntimeException();
+		final Exception rollbackProvokingException = new RuntimeException();
 		testNotTransactional(() -> new ImplementsAnnotatedInterface().echo(rollbackProvokingException),
 				rollbackProvokingException);
 	}
@@ -167,9 +165,8 @@ public class TransactionAspectTests {
 	protected void testNotTransactional(TransactionOperationCallback toc, Throwable expected) throws Throwable {
 		txManager.clear();
 		assertThat(txManager.begun).isEqualTo(0);
-		assertThatExceptionOfType(Throwable.class)
-			.isThrownBy(toc::performTransactionalOperation)
-			.isSameAs(expected);
+		assertThatExceptionOfType(Throwable.class).isThrownBy(
+				toc::performTransactionalOperation).isSameAs(expected);
 		assertThat(txManager.begun).isEqualTo(0);
 	}

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -62,7 +62,7 @@ import org.springframework.util.StringUtils;
 * <p>Mainly for internal use within the framework, but to some degree also
 * useful for application classes. Consider
 * <a href="https://commons.apache.org/proper/commons-beanutils/">Apache Commons BeanUtils</a>,
- * <a href="https://github.com/ExpediaGroup/bull">BULL - Bean Utils Light Library</a>,
+ * <a href="https://hotelsdotcom.github.io/bull/">BULL - Bean Utils Light Library</a>,
 * or similar third-party frameworks for more comprehensive bean utilities.
 *
 * @author Rod Johnson
@@ -247,8 +247,7 @@ public abstract class BeanUtils {
 			// A single public constructor
 			return (Constructor<T>) ctors[0];
 		}
-		else if (ctors.length == 0) {
-			// No public constructors -> check non-public
+		else if (ctors.length == 0){
 			ctors = clazz.getDeclaredConstructors();
 			if (ctors.length == 1) {
 				// A single non-public constructor, e.g. from a non-public record type
@@ -82,7 +82,7 @@ public interface BeanWrapper extends ConfigurablePropertyAccessor {
 	 * Obtain the property descriptor for a specific property
 	 * of the wrapped object.
 	 * @param propertyName the property to obtain the descriptor for
-	 * (may be a nested path, but not an indexed/mapped property)
+	 * (may be a nested path, but no indexed/mapped property)
 	 * @return the property descriptor for the specified property
 	 * @throws InvalidPropertyException if there is no such property
 	 */
@@ -97,6 +97,8 @@ public final class CachedIntrospectionResults {
 	 */
 	public static final String IGNORE_BEANINFO_PROPERTY_NAME = "spring.beaninfo.ignore";

+	private static final PropertyDescriptor[] EMPTY_PROPERTY_DESCRIPTOR_ARRAY = {};
+

 	private static final boolean shouldIntrospectorIgnoreBeaninfoClasses =
 			SpringProperties.getFlag(IGNORE_BEANINFO_PROPERTY_NAME);
@@ -295,7 +297,7 @@ public final class CachedIntrospectionResults {
 					// Only allow URL attribute introspection, not content resolution
 					continue;
 				}
-				if (pd.getWriteMethod() == null && isInvalidReadOnlyPropertyType(pd.getPropertyType(), beanClass)) {
+				if (pd.getWriteMethod() == null && isInvalidReadOnlyPropertyType(pd.getPropertyType())) {
 					// Ignore read-only properties such as ClassLoader - no need to bind to those
 					continue;
 				}
@@ -345,8 +347,7 @@ public final class CachedIntrospectionResults {
 						// GenericTypeAwarePropertyDescriptor leniently resolves a set* write method
 						// against a declared read method, so we prefer read method descriptors here.
 						pd = buildGenericTypeAwarePropertyDescriptor(beanClass, pd);
-						if (pd.getWriteMethod() == null &&
-								isInvalidReadOnlyPropertyType(pd.getPropertyType(), beanClass)) {
+						if (pd.getWriteMethod() == null && isInvalidReadOnlyPropertyType(pd.getPropertyType())) {
 							// Ignore read-only properties such as ClassLoader - no need to bind to those
 							continue;
 						}
@@ -379,7 +380,7 @@ public final class CachedIntrospectionResults {
 		if (Modifier.isStatic(method.getModifiers()) ||
 				method.getDeclaringClass() == Object.class || method.getDeclaringClass() == Class.class ||
 				method.getParameterCount() > 0 || method.getReturnType() == void.class ||
-				isInvalidReadOnlyPropertyType(method.getReturnType(), method.getDeclaringClass())) {
+				isInvalidReadOnlyPropertyType(method.getReturnType())) {
 			return false;
 		}
 		try {
@@ -392,11 +393,10 @@ public final class CachedIntrospectionResults {
 		}
 	}

-	private boolean isInvalidReadOnlyPropertyType(@Nullable Class<?> returnType, Class<?> beanClass) {
-		return (returnType != null && (ClassLoader.class.isAssignableFrom(returnType) ||
-				ProtectionDomain.class.isAssignableFrom(returnType) ||
-				(AutoCloseable.class.isAssignableFrom(returnType) &&
-						!AutoCloseable.class.isAssignableFrom(beanClass))));
+	private boolean isInvalidReadOnlyPropertyType(@Nullable Class<?> returnType) {
+		return (returnType != null && (AutoCloseable.class.isAssignableFrom(returnType) ||
+				ClassLoader.class.isAssignableFrom(returnType) ||
+				ProtectionDomain.class.isAssignableFrom(returnType)));
 	}


@@ -422,7 +422,7 @@ public final class CachedIntrospectionResults {
 	}

 	PropertyDescriptor[] getPropertyDescriptors() {
-		return this.propertyDescriptors.values().toArray(PropertyDescriptorUtils.EMPTY_PROPERTY_DESCRIPTOR_ARRAY);
+		return this.propertyDescriptors.values().toArray(EMPTY_PROPERTY_DESCRIPTOR_ARRAY);
 	}

 	private PropertyDescriptor buildGenericTypeAwarePropertyDescriptor(Class<?> beanClass, PropertyDescriptor pd) {
@@ -327,7 +327,7 @@ public class MutablePropertyValues implements PropertyValues, Serializable {
 	/**
 	 * Register the specified property as "processed" in the sense
 	 * of some processor calling the corresponding setter method
-	 * outside the PropertyValue(s) mechanism.
+	 * outside of the PropertyValue(s) mechanism.
 	 * <p>This will lead to {@code true} being returned from
 	 * a {@link #contains} call for the specified property.
 	 * @param propertyName the name of the property.
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -17,15 +17,9 @@
 package org.springframework.beans;

 import java.beans.IntrospectionException;
-import java.beans.Introspector;
 import java.beans.PropertyDescriptor;
 import java.lang.reflect.Method;
-import java.util.ArrayList;
-import java.util.Collection;
 import java.util.Enumeration;
-import java.util.List;
-import java.util.Map;
-import java.util.TreeMap;

 import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
@@ -38,80 +32,6 @@ import org.springframework.util.ObjectUtils;
 */
 abstract class PropertyDescriptorUtils {

-	public static final PropertyDescriptor[] EMPTY_PROPERTY_DESCRIPTOR_ARRAY = {};
-
-
-	/**
-	 * Simple introspection algorithm for basic set/get/is accessor methods,
-	 * building corresponding JavaBeans property descriptors for them.
-	 * <p>This just supports the basic JavaBeans conventions, without indexed
-	 * properties or any customizers, and without other BeanInfo metadata.
-	 * For standard JavaBeans introspection, use the JavaBeans Introspector.
-	 * @param beanClass the target class to introspect
-	 * @return a collection of property descriptors
-	 * @throws IntrospectionException from introspecting the given bean class
-	 * @since 5.3.24
-	 * @see SimpleBeanInfoFactory
-	 * @see java.beans.Introspector#getBeanInfo(Class)
-	 */
-	public static Collection<? extends PropertyDescriptor> determineBasicProperties(Class<?> beanClass)
-			throws IntrospectionException {
-
-		Map<String, BasicPropertyDescriptor> pdMap = new TreeMap<>();
-
-		for (Method method : beanClass.getMethods()) {
-			String methodName = method.getName();
-
-			boolean setter;
-			int nameIndex;
-			if (methodName.startsWith("set") && method.getParameterCount() == 1) {
-				setter = true;
-				nameIndex = 3;
-			}
-			else if (methodName.startsWith("get") && method.getParameterCount() == 0 && method.getReturnType() != Void.TYPE) {
-				setter = false;
-				nameIndex = 3;
-			}
-			else if (methodName.startsWith("is") && method.getParameterCount() == 0 && method.getReturnType() == boolean.class) {
-				setter = false;
-				nameIndex = 2;
-			}
-			else {
-				continue;
-			}
-
-			String propertyName = Introspector.decapitalize(methodName.substring(nameIndex));
-			if (propertyName.isEmpty()) {
-				continue;
-			}
-
-			BasicPropertyDescriptor pd = pdMap.get(propertyName);
-			if (pd != null) {
-				if (setter) {
-					if (pd.getWriteMethod() == null ||
-							pd.getWriteMethod().getParameterTypes()[0].isAssignableFrom(method.getParameterTypes()[0])) {
-						pd.setWriteMethod(method);
-					}
-					else {
-						pd.addWriteMethod(method);
-					}
-				}
-				else {
-					if (pd.getReadMethod() == null ||
-							(pd.getReadMethod().getReturnType() == method.getReturnType() && method.getName().startsWith("is"))) {
-						pd.setReadMethod(method);
-					}
-				}
-			}
-			else {
-				pd = new BasicPropertyDescriptor(propertyName, (!setter ? method : null), (setter ? method : null));
-				pdMap.put(propertyName, pd);
-			}
-		}
-
-		return pdMap.values();
-	}
-
 	/**
 	 * See {@link java.beans.FeatureDescriptor}.
 	 */
@@ -253,72 +173,4 @@ abstract class PropertyDescriptorUtils {
 				pd.isBound() == otherPd.isBound() && pd.isConstrained() == otherPd.isConstrained());
 	}

-
-	/**
-	 * PropertyDescriptor for {@link #determineBasicProperties(Class)},
-	 * not performing any early type determination for
-	 * {@link #setReadMethod}/{@link #setWriteMethod}.
-	 * @since 5.3.24
-	 */
-	private static class BasicPropertyDescriptor extends PropertyDescriptor {
-
-		@Nullable
-		private Method readMethod;
-
-		@Nullable
-		private Method writeMethod;
-
-		private final List<Method> alternativeWriteMethods = new ArrayList<>();
-
-		public BasicPropertyDescriptor(String propertyName, @Nullable Method readMethod, @Nullable Method writeMethod)
-				throws IntrospectionException {
-
-			super(propertyName, readMethod, writeMethod);
-		}
-
-		@Override
-		public void setReadMethod(@Nullable Method readMethod) {
-			this.readMethod = readMethod;
-		}
-
-		@Override
-		@Nullable
-		public Method getReadMethod() {
-			return this.readMethod;
-		}
-
-		@Override
-		public void setWriteMethod(@Nullable Method writeMethod) {
-			this.writeMethod = writeMethod;
-		}
-
-		public void addWriteMethod(Method writeMethod) {
-			if (this.writeMethod != null) {
-				this.alternativeWriteMethods.add(this.writeMethod);
-				this.writeMethod = null;
-			}
-			this.alternativeWriteMethods.add(writeMethod);
-		}
-
-		@Override
-		@Nullable
-		public Method getWriteMethod() {
-			if (this.writeMethod == null && !this.alternativeWriteMethods.isEmpty()) {
-				if (this.readMethod == null) {
-					return this.alternativeWriteMethods.get(0);
-				}
-				else {
-					for (Method method : this.alternativeWriteMethods) {
-						if (this.readMethod.getReturnType().isAssignableFrom(method.getParameterTypes()[0])) {
-							this.writeMethod = method;
-							break;
-						}
-					}
-				}
-			}
-			return this.writeMethod;
-		}
-	}
-
-
 }
@@ -22,7 +22,7 @@ package org.springframework.beans;
 * {@link org.springframework.beans.PropertyEditorRegistry property editor registry}.
 *
 * <p>This is particularly useful when you need to use the same set of
- * property editors in several situations: write a corresponding
+ * property editors in several different situations: write a corresponding
 * registrar and reuse that in each case.
 *
 * @author Juergen Hoeller
@@ -1,71 +0,0 @@
-/*
- * Copyright 2002-2022 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.springframework.beans;
-
-import java.beans.BeanDescriptor;
-import java.beans.BeanInfo;
-import java.beans.IntrospectionException;
-import java.beans.PropertyDescriptor;
-import java.beans.SimpleBeanInfo;
-import java.util.Collection;
-
-import org.springframework.core.Ordered;
-import org.springframework.lang.NonNull;
-
-/**
- * {@link BeanInfoFactory} implementation that bypasses the standard {@link java.beans.Introspector}
- * for faster introspection, reduced to basic property determination (as commonly needed in Spring).
- *
- * <p>To be configured via a {@code META-INF/spring.factories} file with the following content,
- * overriding other custom {@code org.springframework.beans.BeanInfoFactory} declarations:
- * {@code org.springframework.beans.BeanInfoFactory=org.springframework.beans.SimpleBeanInfoFactory}
- *
- * <p>Ordered at {@code Ordered.LOWEST_PRECEDENCE - 1} to override {@link ExtendedBeanInfoFactory}
- * (registered by default in 5.3) if necessary while still allowing other user-defined
- * {@link BeanInfoFactory} types to take precedence.
- *
- * @author Juergen Hoeller
- * @since 5.3.24
- * @see ExtendedBeanInfoFactory
- * @see CachedIntrospectionResults
- */
-public class SimpleBeanInfoFactory implements BeanInfoFactory, Ordered {
-
-	@Override
-	@NonNull
-	public BeanInfo getBeanInfo(Class<?> beanClass) throws IntrospectionException {
-		Collection<? extends PropertyDescriptor> pds =
-				PropertyDescriptorUtils.determineBasicProperties(beanClass);
-
-		return new SimpleBeanInfo() {
-			@Override
-			public BeanDescriptor getBeanDescriptor() {
-				return new BeanDescriptor(beanClass);
-			}
-			@Override
-			public PropertyDescriptor[] getPropertyDescriptors() {
-				return pds.toArray(PropertyDescriptorUtils.EMPTY_PROPERTY_DESCRIPTOR_ARRAY);
-			}
-		};
-	}
-
-	@Override
-	public int getOrder() {
-		return Ordered.LOWEST_PRECEDENCE - 1;
-	}
-
-}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -136,10 +136,7 @@ public interface BeanFactory {
 	 * <p>Translates aliases back to the corresponding canonical bean name.
 	 * <p>Will ask the parent factory if the bean cannot be found in this factory instance.
 	 * @param name the name of the bean to retrieve
-	 * @return an instance of the bean.
-	 * Note that the return value will never be {@code null} but possibly a stub for
-	 * {@code null} returned from a factory method, to be checked via {@code equals(null)}.
-	 * Consider using {@link #getBeanProvider(Class)} for resolving optional dependencies.
+	 * @return an instance of the bean
 	 * @throws NoSuchBeanDefinitionException if there is no bean with the specified name
 	 * @throws BeansException if the bean could not be obtained
 	 */
@@ -155,11 +152,7 @@ public interface BeanFactory {
 	 * <p>Will ask the parent factory if the bean cannot be found in this factory instance.
 	 * @param name the name of the bean to retrieve
 	 * @param requiredType type the bean must match; can be an interface or superclass
-	 * @return an instance of the bean.
-	 * Note that the return value will never be {@code null}. In case of a stub for
-	 * {@code null} from a factory method having been resolved for the requested bean, a
-	 * {@code BeanNotOfRequiredTypeException} against the NullBean stub will be raised.
-	 * Consider using {@link #getBeanProvider(Class)} for resolving optional dependencies.
+	 * @return an instance of the bean
 	 * @throws NoSuchBeanDefinitionException if there is no such bean definition
 	 * @throws BeanNotOfRequiredTypeException if the bean is not of the required type
 	 * @throws BeansException if the bean could not be created
@@ -45,7 +45,7 @@ import org.springframework.lang.Nullable;
 *
 * <p><b>The container is only responsible for managing the lifecycle of the FactoryBean
 * instance, not the lifecycle of the objects created by the FactoryBean.</b> Therefore,
- * a destroy method on an exposed bean object (such as {@link java.io.Closeable#close()})
+ * a destroy method on an exposed bean object (such as {@link java.io.Closeable#close()}
 * will <i>not</i> be called automatically. Instead, a FactoryBean should implement
 * {@link DisposableBean} and delegate any such close call to the underlying object.
 *
@@ -108,7 +108,7 @@ public interface FactoryBean<T> {
 	 * been fully initialized. It must not rely on state created during
 	 * initialization; of course, it can still use such state if available.
 	 * <p><b>NOTE:</b> Autowiring will simply ignore FactoryBeans that return
-	 * {@code null} here. Therefore, it is highly recommended to implement
+	 * {@code null} here. Therefore it is highly recommended to implement
 	 * this method properly, using the current state of the FactoryBean.
 	 * @return the type of object that this FactoryBean creates,
 	 * or {@code null} if not known at the time of the call
@@ -343,7 +343,7 @@ public interface ListableBeanFactory extends BeanFactory {

 	/**
 	 * Find an {@link Annotation} of {@code annotationType} on the specified bean,
-	 * traversing its interfaces and superclasses if no annotation can be found on
+	 * traversing its interfaces and super classes if no annotation can be found on
 	 * the given class itself, as well as checking the bean's factory method (if any).
 	 * @param beanName the name of the bean to look for annotations on
 	 * @param annotationType the type of annotation to look for
@@ -361,7 +361,7 @@ public interface ListableBeanFactory extends BeanFactory {

 	/**
 	 * Find an {@link Annotation} of {@code annotationType} on the specified bean,
-	 * traversing its interfaces and superclasses if no annotation can be found on
+	 * traversing its interfaces and super classes if no annotation can be found on
 	 * the given class itself, as well as checking the bean's factory method (if any).
 	 * @param beanName the name of the bean to look for annotations on
 	 * @param annotationType the type of annotation to look for
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -438,6 +438,7 @@ public class AutowiredAnnotationBeanPostProcessor implements SmartInstantiationA
 		}
 	}

+
 	private InjectionMetadata findAutowiringMetadata(String beanName, Class<?> clazz, @Nullable PropertyValues pvs) {
 		// Fall back to class name as cache key, for backwards compatibility with custom callers.
 		String cacheKey = (StringUtils.hasLength(beanName) ? beanName : clazz.getName());
@@ -562,9 +563,7 @@ public class AutowiredAnnotationBeanPostProcessor implements SmartInstantiationA
 	 * @param type the type of the bean
 	 * @return the target beans, or an empty Collection if no bean of this type is found
 	 * @throws BeansException if bean retrieval failed
-	 * @deprecated since 5.3.24 since it is unused in the meantime
 	 */
-	@Deprecated
 	protected <T> Map<String, T> findAutowireCandidates(Class<T> type) throws BeansException {
 		if (this.beanFactory == null) {
 			throw new IllegalStateException("No BeanFactory configured - " +
@@ -665,7 +664,7 @@ public class AutowiredAnnotationBeanPostProcessor implements SmartInstantiationA
 					if (value != null || this.required) {
 						cachedFieldValue = desc;
 						registerDependentBeans(beanName, autowiredBeanNames);
-						if (value != null && autowiredBeanNames.size() == 1) {
+						if (autowiredBeanNames.size() == 1) {
 							String autowiredBeanName = autowiredBeanNames.iterator().next();
 							if (beanFactory.containsBean(autowiredBeanName) &&
 									beanFactory.isTypeMatch(autowiredBeanName, field.getType())) {
@@ -778,7 +777,7 @@ public class AutowiredAnnotationBeanPostProcessor implements SmartInstantiationA
 							Class<?>[] paramTypes = method.getParameterTypes();
 							for (int i = 0; i < paramTypes.length; i++) {
 								String autowiredBeanName = it.next();
-								if (arguments[i] != null && beanFactory.containsBean(autowiredBeanName) &&
+								if (beanFactory.containsBean(autowiredBeanName) &&
 										beanFactory.isTypeMatch(autowiredBeanName, paramTypes[i])) {
 									cachedMethodArguments[i] = new ShortcutDependencyDescriptor(
 											descriptors[i], autowiredBeanName, paramTypes[i]);
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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 +25,6 @@ import java.util.Set;

 import org.springframework.beans.SimpleTypeConverter;
 import org.springframework.beans.TypeConverter;
-import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.beans.factory.config.BeanDefinitionHolder;
 import org.springframework.beans.factory.config.DependencyDescriptor;
@@ -138,7 +137,7 @@ public class QualifierAnnotationAutowireCandidateResolver extends GenericTypeAwa
 	 * as a <em>qualifier</em>, the bean must 'match' against the annotation as
 	 * well as any attributes it may contain. The bean definition must contain
 	 * the same qualifier or match by meta attributes. A "value" attribute will
-	 * fall back to match against the bean name or an alias if a qualifier or
+	 * fallback to match against the bean name or an alias if a qualifier or
 	 * attribute does not match.
 	 * @see Qualifier
 	 */
@@ -187,7 +186,7 @@ public class QualifierAnnotationAutowireCandidateResolver extends GenericTypeAwa
 					if (isQualifier(metaType)) {
 						foundMeta = true;
 						// Only accept fallback match if @Qualifier annotation has a value...
-						// Otherwise, it is just a marker for a custom qualifier annotation.
+						// Otherwise it is just a marker for a custom qualifier annotation.
 						if ((fallbackToMeta && ObjectUtils.isEmpty(AnnotationUtils.getValue(metaAnn))) ||
 								!checkQualifier(bdHolder, metaAnn, typeConverter)) {
 							return false;
@@ -241,11 +240,10 @@ public class QualifierAnnotationAutowireCandidateResolver extends GenericTypeAwa
 				}
 			}
 			if (targetAnnotation == null) {
-				BeanFactory beanFactory = getBeanFactory();
 				// Look for matching annotation on the target class
-				if (beanFactory != null) {
+				if (getBeanFactory() != null) {
 					try {
-						Class<?> beanType = beanFactory.getType(bdHolder.getBeanName());
+						Class<?> beanType = getBeanFactory().getType(bdHolder.getBeanName());
 						if (beanType != null) {
 							targetAnnotation = AnnotationUtils.getAnnotation(ClassUtils.getUserClass(beanType), type);
 						}
@@ -30,7 +30,7 @@ import org.springframework.beans.BeansException;
 *
 * <p>A {@code BeanFactoryPostProcessor} may interact with and modify bean
 * definitions, but never bean instances. Doing so may cause premature bean
- * instantiation, violating the container and causing unintended side effects.
+ * instantiation, violating the container and causing unintended side-effects.
 * If bean instance interaction is required, consider implementing
 * {@link BeanPostProcessor} instead.
 *
@@ -65,7 +65,7 @@ public class ConstructorArgumentValues {

 	/**
 	 * Copy all given argument values into this object, using separate holder
-	 * instances to keep the values independent of the original object.
+	 * instances to keep the values independent from the original object.
 	 * <p>Note: Identical ValueHolder instances will only be registered once,
 	 * to allow for merging and re-merging of argument value definitions. Distinct
 	 * ValueHolder instances carrying the same content are of course allowed.
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -155,7 +155,7 @@ public abstract class YamlProcessor {
 	 * resources. Each resource is parsed in turn and the documents inside checked against
 	 * the {@link #setDocumentMatchers(DocumentMatcher...) matchers}. If a document
 	 * matches it is passed into the callback, along with its representation as Properties.
-	 * Depending on the {@link #setResolutionMethod(ResolutionMethod)} not all the
+	 * Depending on the {@link #setResolutionMethod(ResolutionMethod)} not all of the
 	 * documents will be parsed.
 	 * @param callback a callback to delegate to once matching documents are found
 	 * @see #createYaml()
@@ -184,9 +184,8 @@ public abstract class YamlProcessor {
 	protected Yaml createYaml() {
 		LoaderOptions loaderOptions = new LoaderOptions();
 		loaderOptions.setAllowDuplicateKeys(false);
-		DumperOptions dumperOptions = new DumperOptions();
-		return new Yaml(new FilteringConstructor(loaderOptions), new Representer(dumperOptions),
-				dumperOptions, loaderOptions);
+		return new Yaml(new FilteringConstructor(loaderOptions), new Representer(),
+				new DumperOptions(), loaderOptions);
 	}

 	private boolean process(MatchCallback callback, Yaml yaml, Resource resource) {
@@ -124,7 +124,7 @@ public class BeanComponentDefinition extends BeanDefinitionHolder implements Com
 	}

 	/**
-	 * This implementation expects the other object to be of type BeanComponentDefinition
+	 * This implementations expects the other object to be of type BeanComponentDefinition
 	 * as well, in addition to the superclass's equality requirements.
 	 */
 	@Override
@@ -50,13 +50,13 @@ import org.springframework.beans.factory.config.BeanReference;
 * {@link #getBeanReferences}, tools may wish to inspect all {@link BeanDefinition BeanDefinitions} to gather
 * the full set of {@link BeanReference BeanReferences}. Implementations are required to provide
 * all {@link BeanReference BeanReferences} that are required to validate the configuration of the
- * overall logical entity as well as those required to provide full user visualization of the configuration.
+ * overall logical entity as well as those required to provide full user visualisation of the configuration.
 * It is expected that certain {@link BeanReference BeanReferences} will not be important to
 * validation or to the user view of the configuration and as such these may be omitted. A tool may wish to
 * display any additional {@link BeanReference BeanReferences} sourced through the supplied
 * {@link BeanDefinition BeanDefinitions} but this is not considered to be a typical case.
 *
- * <p>Tools can determine the importance of contained {@link BeanDefinition BeanDefinitions} by checking the
+ * <p>Tools can determine the important of contained {@link BeanDefinition BeanDefinitions} by checking the
 * {@link BeanDefinition#getRole role identifier}. The role is essentially a hint to the tool as to how
 * important the configuration provider believes a {@link BeanDefinition} is to the end user. It is expected
 * that tools will <strong>not</strong> display all {@link BeanDefinition BeanDefinitions} for a given
@@ -1510,7 +1510,7 @@ public abstract class AbstractAutowireCapableBeanFactory extends AbstractBeanFac
 			try {
 				PropertyDescriptor pd = bw.getPropertyDescriptor(propertyName);
 				// Don't try autowiring by type for type Object: never makes sense,
-				// even if it technically is an unsatisfied, non-simple property.
+				// even if it technically is a unsatisfied, non-simple property.
 				if (Object.class != pd.getPropertyType()) {
 					MethodParameter methodParam = BeanUtils.getWriteMethodParameter(pd);
 					// Do not allow eager init for type matching in case of a prioritized post-processor.
@@ -945,7 +945,7 @@ public abstract class AbstractBeanDefinition extends BeanMetadataAttributeAccess
 	}

 	/**
-	 * Specify whether the configured initializer method is the default.
+	 * Specify whether or not the configured initializer method is the default.
 	 * <p>The default value is {@code true} for a locally specified init method
 	 * but switched to {@code false} for a shared setting in a defaults section
 	 * (e.g. {@code bean init-method} versus {@code beans default-init-method}
@@ -984,7 +984,7 @@ public abstract class AbstractBeanDefinition extends BeanMetadataAttributeAccess
 	}

 	/**
-	 * Specify whether the configured destroy method is the default.
+	 * Specify whether or not the configured destroy method is the default.
 	 * <p>The default value is {@code true} for a locally specified destroy method
 	 * but switched to {@code false} for a shared setting in a defaults section
 	 * (e.g. {@code bean destroy-method} versus {@code beans default-destroy-method}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -161,7 +161,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp

 	/** Cache of pre-filtered post-processors. */
 	@Nullable
-	private BeanPostProcessorCache beanPostProcessorCache;
+	private volatile BeanPostProcessorCache beanPostProcessorCache;

 	/** Map from scope identifier String to corresponding Scope. */
 	private final Map<String, Scope> scopes = new LinkedHashMap<>(8);
@@ -593,7 +593,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 		RootBeanDefinition mbd = getMergedLocalBeanDefinition(beanName);
 		BeanDefinitionHolder dbd = mbd.getDecoratedDefinition();

-		// Set up the types that we want to match against
+		// Setup the types that we want to match against
 		Class<?> classToMatch = typeToMatch.resolve();
 		if (classToMatch == null) {
 			classToMatch = FactoryBean.class;
@@ -944,12 +944,10 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 	@Override
 	public void addBeanPostProcessor(BeanPostProcessor beanPostProcessor) {
 		Assert.notNull(beanPostProcessor, "BeanPostProcessor must not be null");
-		synchronized (this.beanPostProcessors) {
-			// Remove from old position, if any
-			this.beanPostProcessors.remove(beanPostProcessor);
-			// Add to end of list
-			this.beanPostProcessors.add(beanPostProcessor);
-		}
+		// Remove from old position, if any
+		this.beanPostProcessors.remove(beanPostProcessor);
+		// Add to end of list
+		this.beanPostProcessors.add(beanPostProcessor);
 	}

 	/**
@@ -959,12 +957,8 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 	 * @see #addBeanPostProcessor
 	 */
 	public void addBeanPostProcessors(Collection<? extends BeanPostProcessor> beanPostProcessors) {
-		synchronized (this.beanPostProcessors) {
-			// Remove from old position, if any
-			this.beanPostProcessors.removeAll(beanPostProcessors);
-			// Add to end of list
-			this.beanPostProcessors.addAll(beanPostProcessors);
-		}
+		this.beanPostProcessors.removeAll(beanPostProcessors);
+		this.beanPostProcessors.addAll(beanPostProcessors);
 	}

 	@Override
@@ -986,34 +980,26 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 	 * @since 5.3
 	 */
 	BeanPostProcessorCache getBeanPostProcessorCache() {
-		synchronized (this.beanPostProcessors) {
-			BeanPostProcessorCache bppCache = this.beanPostProcessorCache;
-			if (bppCache == null) {
-				bppCache = new BeanPostProcessorCache();
-				for (BeanPostProcessor bpp : this.beanPostProcessors) {
-					if (bpp instanceof InstantiationAwareBeanPostProcessor) {
-						bppCache.instantiationAware.add((InstantiationAwareBeanPostProcessor) bpp);
-						if (bpp instanceof SmartInstantiationAwareBeanPostProcessor) {
-							bppCache.smartInstantiationAware.add((SmartInstantiationAwareBeanPostProcessor) bpp);
-						}
-					}
-					if (bpp instanceof DestructionAwareBeanPostProcessor) {
-						bppCache.destructionAware.add((DestructionAwareBeanPostProcessor) bpp);
-					}
-					if (bpp instanceof MergedBeanDefinitionPostProcessor) {
-						bppCache.mergedDefinition.add((MergedBeanDefinitionPostProcessor) bpp);
+		BeanPostProcessorCache bpCache = this.beanPostProcessorCache;
+		if (bpCache == null) {
+			bpCache = new BeanPostProcessorCache();
+			for (BeanPostProcessor bp : this.beanPostProcessors) {
+				if (bp instanceof InstantiationAwareBeanPostProcessor) {
+					bpCache.instantiationAware.add((InstantiationAwareBeanPostProcessor) bp);
+					if (bp instanceof SmartInstantiationAwareBeanPostProcessor) {
+						bpCache.smartInstantiationAware.add((SmartInstantiationAwareBeanPostProcessor) bp);
 					}
 				}
-				this.beanPostProcessorCache = bppCache;
+				if (bp instanceof DestructionAwareBeanPostProcessor) {
+					bpCache.destructionAware.add((DestructionAwareBeanPostProcessor) bp);
+				}
+				if (bp instanceof MergedBeanDefinitionPostProcessor) {
+					bpCache.mergedDefinition.add((MergedBeanDefinitionPostProcessor) bp);
+				}
 			}
-			return bppCache;
-		}
-	}
-
-	private void resetBeanPostProcessorCache() {
-		synchronized (this.beanPostProcessors) {
-			this.beanPostProcessorCache = null;
+			this.beanPostProcessorCache = bpCache;
 		}
+		return bpCache;
 	}

 	/**
@@ -2028,27 +2014,27 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 		@Override
 		public BeanPostProcessor set(int index, BeanPostProcessor element) {
 			BeanPostProcessor result = super.set(index, element);
-			resetBeanPostProcessorCache();
+			beanPostProcessorCache = null;
 			return result;
 		}

 		@Override
 		public boolean add(BeanPostProcessor o) {
 			boolean success = super.add(o);
-			resetBeanPostProcessorCache();
+			beanPostProcessorCache = null;
 			return success;
 		}

 		@Override
 		public void add(int index, BeanPostProcessor element) {
 			super.add(index, element);
-			resetBeanPostProcessorCache();
+			beanPostProcessorCache = null;
 		}

 		@Override
 		public BeanPostProcessor remove(int index) {
 			BeanPostProcessor result = super.remove(index);
-			resetBeanPostProcessorCache();
+			beanPostProcessorCache = null;
 			return result;
 		}

@@ -2056,7 +2042,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 		public boolean remove(Object o) {
 			boolean success = super.remove(o);
 			if (success) {
-				resetBeanPostProcessorCache();
+				beanPostProcessorCache = null;
 			}
 			return success;
 		}
@@ -2065,7 +2051,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 		public boolean removeAll(Collection<?> c) {
 			boolean success = super.removeAll(c);
 			if (success) {
-				resetBeanPostProcessorCache();
+				beanPostProcessorCache = null;
 			}
 			return success;
 		}
@@ -2074,7 +2060,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 		public boolean retainAll(Collection<?> c) {
 			boolean success = super.retainAll(c);
 			if (success) {
-				resetBeanPostProcessorCache();
+				beanPostProcessorCache = null;
 			}
 			return success;
 		}
@@ -2083,7 +2069,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 		public boolean addAll(Collection<? extends BeanPostProcessor> c) {
 			boolean success = super.addAll(c);
 			if (success) {
-				resetBeanPostProcessorCache();
+				beanPostProcessorCache = null;
 			}
 			return success;
 		}
@@ -2092,7 +2078,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 		public boolean addAll(int index, Collection<? extends BeanPostProcessor> c) {
 			boolean success = super.addAll(index, c);
 			if (success) {
-				resetBeanPostProcessorCache();
+				beanPostProcessorCache = null;
 			}
 			return success;
 		}
@@ -2101,7 +2087,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 		public boolean removeIf(Predicate<? super BeanPostProcessor> filter) {
 			boolean success = super.removeIf(filter);
 			if (success) {
-				resetBeanPostProcessorCache();
+				beanPostProcessorCache = null;
 			}
 			return success;
 		}
@@ -2109,7 +2095,7 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
 		@Override
 		public void replaceAll(UnaryOperator<BeanPostProcessor> operator) {
 			super.replaceAll(operator);
-			resetBeanPostProcessorCache();
+			beanPostProcessorCache = null;
 		}
 	}

@@ -293,7 +293,7 @@ public final class BeanDefinitionBuilder {
 	}

 	/**
-	 * Set whether this definition is abstract.
+	 * Set whether or not this definition is abstract.
 	 */
 	public BeanDefinitionBuilder setAbstract(boolean flag) {
 		this.beanDefinition.setAbstract(flag);
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -280,7 +280,7 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 	}

 	/**
-	 * Return the dependency comparator for this BeanFactory (may be {@code null}).
+	 * Return the dependency comparator for this BeanFactory (may be {@code null}.
 	 * @since 4.0
 	 */
 	@Nullable
@@ -585,9 +585,7 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 							if (!matchFound) {
 								// In case of FactoryBean, try to match FactoryBean instance itself next.
 								beanName = FACTORY_BEAN_PREFIX + beanName;
-								if (includeNonSingletons || isSingleton(beanName, mbd, dbd)) {
-									matchFound = isTypeMatch(beanName, type, allowFactoryBeanInit);
-								}
+								matchFound = isTypeMatch(beanName, type, allowFactoryBeanInit);
 							}
 						}
 						if (matchFound) {
@@ -2167,25 +2165,20 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
 		@Nullable
 		public Object getOrderSource(Object obj) {
 			String beanName = this.instancesToBeanNames.get(obj);
-			if (beanName == null) {
+			if (beanName == null || !containsBeanDefinition(beanName)) {
 				return null;
 			}
-			try {
-				RootBeanDefinition beanDefinition = (RootBeanDefinition) getMergedBeanDefinition(beanName);
-				List<Object> sources = new ArrayList<>(2);
-				Method factoryMethod = beanDefinition.getResolvedFactoryMethod();
-				if (factoryMethod != null) {
-					sources.add(factoryMethod);
-				}
-				Class<?> targetType = beanDefinition.getTargetType();
-				if (targetType != null && targetType != obj.getClass()) {
-					sources.add(targetType);
-				}
-				return sources.toArray();
+			RootBeanDefinition beanDefinition = getMergedLocalBeanDefinition(beanName);
+			List<Object> sources = new ArrayList<>(2);
+			Method factoryMethod = beanDefinition.getResolvedFactoryMethod();
+			if (factoryMethod != null) {
+				sources.add(factoryMethod);
 			}
-			catch (NoSuchBeanDefinitionException ex) {
-				return null;
+			Class<?> targetType = beanDefinition.getTargetType();
+			if (targetType != null && targetType != obj.getClass()) {
+				sources.add(targetType);
 			}
+			return sources.toArray();
 		}
 	}

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -102,7 +102,7 @@ public class DefaultSingletonBeanRegistry extends SimpleAliasRegistry implements
 	private boolean singletonsCurrentlyInDestruction = false;

 	/** Disposable bean instances: bean name to disposable instance. */
-	private final Map<String, DisposableBean> disposableBeans = new LinkedHashMap<>();
+	private final Map<String, Object> disposableBeans = new LinkedHashMap<>();

 	/** Map between containing bean names: bean name to Set of bean names that the bean contains. */
 	private final Map<String, Set<String>> containedBeanMap = new ConcurrentHashMap<>(16);
@@ -340,7 +340,7 @@ public class DefaultSingletonBeanRegistry extends SimpleAliasRegistry implements
 	 * (within the entire factory).
 	 * @param beanName the name of the bean
 	 */
-	public boolean isSingletonCurrentlyInCreation(@Nullable String beanName) {
+	public boolean isSingletonCurrentlyInCreation(String beanName) {
 		return this.singletonsCurrentlyInCreation.contains(beanName);
 	}

@@ -554,7 +554,7 @@ public class DefaultSingletonBeanRegistry extends SimpleAliasRegistry implements
 		// Destroy the corresponding DisposableBean instance.
 		DisposableBean disposableBean;
 		synchronized (this.disposableBeans) {
-			disposableBean = this.disposableBeans.remove(beanName);
+			disposableBean = (DisposableBean) this.disposableBeans.remove(beanName);
 		}
 		destroyBean(beanName, disposableBean);
 	}
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -68,9 +68,9 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {

 	private static final String SHUTDOWN_METHOD_NAME = "shutdown";

-
 	private static final Log logger = LogFactory.getLog(DisposableBeanAdapter.class);

+
 	private final Object bean;

 	private final String beanName;
@@ -214,15 +214,12 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 				}
 			}
 			catch (Throwable ex) {
-				if (logger.isWarnEnabled()) {
-					String msg = "Invocation of destroy method failed on bean with name '" + this.beanName + "'";
-					if (logger.isDebugEnabled()) {
-						// Log at warn level like below but add the exception stacktrace only with debug level
-						logger.warn(msg, ex);
-					}
-					else {
-						logger.warn(msg + ": " + ex);
-					}
+				String msg = "Invocation of destroy method failed on bean with name '" + this.beanName + "'";
+				if (logger.isDebugEnabled()) {
+					logger.warn(msg, ex);
+				}
+				else {
+					logger.warn(msg + ": " + ex);
 				}
 			}
 		}
@@ -243,15 +240,12 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 				}
 			}
 			catch (Throwable ex) {
-				if (logger.isWarnEnabled()) {
-					String msg = "Invocation of close method failed on bean with name '" + this.beanName + "'";
-					if (logger.isDebugEnabled()) {
-						// Log at warn level like below but add the exception stacktrace only with debug level
-						logger.warn(msg, ex);
-					}
-					else {
-						logger.warn(msg + ": " + ex);
-					}
+				String msg = "Invocation of close method failed on bean with name '" + this.beanName + "'";
+				if (logger.isDebugEnabled()) {
+					logger.warn(msg, ex);
+				}
+				else {
+					logger.warn(msg + ": " + ex);
 				}
 			}
 		}
@@ -326,23 +320,18 @@ class DisposableBeanAdapter implements DisposableBean, Runnable, Serializable {
 			}
 		}
 		catch (InvocationTargetException ex) {
-			if (logger.isWarnEnabled()) {
-				String msg = "Custom destroy method '" + this.destroyMethodName + "' on bean with name '" +
-						this.beanName + "' threw an exception";
-				if (logger.isDebugEnabled()) {
-					// Log at warn level like below but add the exception stacktrace only with debug level
-					logger.warn(msg, ex.getTargetException());
-				}
-				else {
-					logger.warn(msg + ": " + ex.getTargetException());
-				}
+			String msg = "Custom destroy method '" + this.destroyMethodName + "' on bean with name '" +
+					this.beanName + "' threw an exception";
+			if (logger.isDebugEnabled()) {
+				logger.warn(msg, ex.getTargetException());
+			}
+			else {
+				logger.warn(msg + ": " + ex.getTargetException());
 			}
 		}
 		catch (Throwable ex) {
-			if (logger.isWarnEnabled()) {
-				logger.warn("Failed to invoke custom destroy method '" + this.destroyMethodName +
-						"' on bean with name '" + this.beanName + "'", ex);
-			}
+			logger.warn("Failed to invoke custom destroy method '" + this.destroyMethodName +
+					"' on bean with name '" + this.beanName + "'", ex);
 		}
 	}

@@ -33,7 +33,7 @@ import org.springframework.util.ClassUtils;
 /**
 * Basic {@link AutowireCandidateResolver} that performs a full generic type
 * match with the candidate's type if the dependency is declared as a generic type
- * (e.g. {@code Repository<Customer>}).
+ * (e.g. Repository&lt;Customer&gt;).
 *
 * <p>This is the base class for
 * {@link org.springframework.beans.factory.annotation.QualifierAnnotationAutowireCandidateResolver},
@@ -17,7 +17,7 @@
 package org.springframework.beans.factory.support;

 import java.util.ArrayList;
-import java.util.Collections;
+import java.util.Arrays;
 import java.util.List;

 import org.springframework.beans.BeanMetadataElement;
@@ -31,8 +31,6 @@ import org.springframework.lang.Nullable;
 * @author Rod Johnson
 * @author Rob Harrop
 * @author Juergen Hoeller
- * @author Stephane Nicoll
- * @author Sam Brannen
 * @since 27.05.2003
 * @param <E> the element type
 */
@@ -57,16 +55,16 @@ public class ManagedList<E> extends ArrayList<E> implements Mergeable, BeanMetad


 	/**
-	 * Create a new instance containing an arbitrary number of elements.
+	 * Return a new instance containing an arbitrary number of elements.
 	 * @param elements the elements to be contained in the list
 	 * @param <E> the {@code List}'s element type
-	 * @return a {@code ManagedList} containing the specified elements
+	 * @return a {@code List} containing the specified elements
 	 * @since 5.3.16
 	 */
-	@SafeVarargs
+	@SuppressWarnings("unchecked")
 	public static <E> ManagedList<E> of(E... elements) {
 		ManagedList<E> list = new ManagedList<>();
-		Collections.addAll(list, elements);
+		list.addAll(Arrays.asList(elements));
 		return list;
 	}

@@ -16,7 +16,7 @@

 package org.springframework.beans.factory.support;

-import java.util.Collections;
+import java.util.Arrays;
 import java.util.LinkedHashSet;
 import java.util.Set;

@@ -30,8 +30,6 @@ import org.springframework.lang.Nullable;
 *
 * @author Juergen Hoeller
 * @author Rob Harrop
- * @author Stephane Nicoll
- * @author Sam Brannen
 * @since 21.01.2004
 * @param <E> the element type
 */
@@ -56,16 +54,16 @@ public class ManagedSet<E> extends LinkedHashSet<E> implements Mergeable, BeanMe


 	/**
-	 * Create a new instance containing an arbitrary number of elements.
+	 * Return a new instance containing an arbitrary number of elements.
 	 * @param elements the elements to be contained in the set
 	 * @param <E> the {@code Set}'s element type
-	 * @return a {@code ManagedSet} containing the specified elements
+	 * @return a {@code Set} containing the specified elements
 	 * @since 5.3.16
 	 */
-	@SafeVarargs
+	@SuppressWarnings("unchecked")
 	public static <E> ManagedSet<E> of(E... elements) {
 		ManagedSet<E> set = new ManagedSet<>();
-		Collections.addAll(set, elements);
+		set.addAll(Arrays.asList(elements));
 		return set;
 	}

@@ -124,7 +124,7 @@ public abstract class AbstractBeanDefinitionParser implements BeanDefinitionPars
 	/**
 	 * Register the supplied {@link BeanDefinitionHolder bean} with the supplied
 	 * {@link BeanDefinitionRegistry registry}.
-	 * <p>Subclasses can override this method to control whether the supplied
+	 * <p>Subclasses can override this method to control whether or not the supplied
 	 * {@link BeanDefinitionHolder bean} is actually even registered, or to
 	 * register even more beans.
 	 * <p>The default implementation registers the supplied {@link BeanDefinitionHolder bean}
@@ -1362,7 +1362,7 @@ public class BeanDefinitionParserDelegate {
 	}

 	/**
-	 * Parse a custom element (outside the default namespace).
+	 * Parse a custom element (outside of the default namespace).
 	 * @param ele the element to parse
 	 * @return the resulting bean definition
 	 */
@@ -1372,7 +1372,7 @@ public class BeanDefinitionParserDelegate {
 	}

 	/**
-	 * Parse a custom element (outside the default namespace).
+	 * Parse a custom element (outside of the default namespace).
 	 * @param ele the element to parse
 	 * @param containingBd the containing bean definition (if any)
 	 * @return the resulting bean definition
@@ -96,7 +96,7 @@ public class DefaultNamespaceHandlerResolver implements NamespaceHandlerResolver
 	 * Create a new {@code DefaultNamespaceHandlerResolver} using the
 	 * supplied mapping file location.
 	 * @param classLoader the {@link ClassLoader} instance used to load mapping resources
-	 * may be {@code null}, in which case the thread context ClassLoader will be used
+	 * may be {@code null}, in which case the thread context ClassLoader will be used)
 	 * @param handlerMappingsLocation the mapping file location
 	 */
 	public DefaultNamespaceHandlerResolver(@Nullable ClassLoader classLoader, String handlerMappingsLocation) {
@@ -56,7 +56,7 @@ public class DelegatingEntityResolver implements EntityResolver {
 	 * <p>Configures the {@link PluggableSchemaResolver} with the supplied
 	 * {@link ClassLoader}.
 	 * @param classLoader the ClassLoader to use for loading
-	 * (can be {@code null} to use the default ClassLoader)
+	 * (can be {@code null}) to use the default ClassLoader)
 	 */
 	public DelegatingEntityResolver(@Nullable ClassLoader classLoader) {
 		this.dtdResolver = new BeansDtdResolver();
@@ -80,7 +80,7 @@ public class PluggableSchemaResolver implements EntityResolver {
 	 * Loads the schema URL &rarr; schema file location mappings using the default
 	 * mapping file pattern "META-INF/spring.schemas".
 	 * @param classLoader the ClassLoader to use for loading
-	 * (can be {@code null} to use the default ClassLoader)
+	 * (can be {@code null}) to use the default ClassLoader)
 	 * @see PropertiesLoaderUtils#loadAllProperties(String, ClassLoader)
 	 */
 	public PluggableSchemaResolver(@Nullable ClassLoader classLoader) {
@@ -92,7 +92,7 @@ public class PluggableSchemaResolver implements EntityResolver {
 	 * Loads the schema URL &rarr; schema file location mappings using the given
 	 * mapping file pattern.
 	 * @param classLoader the ClassLoader to use for loading
-	 * (can be {@code null} to use the default ClassLoader)
+	 * (can be {@code null}) to use the default ClassLoader)
 	 * @param schemaMappingsLocation the location of the file that defines schema mappings
 	 * (must not be empty)
 	 * @see PropertiesLoaderUtils#loadAllProperties(String, ClassLoader)
@@ -50,7 +50,7 @@ import org.springframework.util.StringUtils;
 * the bean that will be considered as a parameter.
 *
 * <b>Note</b>: This implementation supports only named parameters - there is no
- * support for indexes or types. Furthermore, the names are used as hints by
+ * support for indexes or types. Further more, the names are used as hints by
 * the container which, by default, does type introspection.
 *
 * @author Costin Leau
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 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.
@@ -184,7 +184,7 @@ public class XmlBeanDefinitionReader extends AbstractBeanDefinitionReader {
 	}

 	/**
-	 * Set whether the XML parser should be XML namespace aware.
+	 * Set whether or not the XML parser should be XML namespace aware.
 	 * Default is "false".
 	 * <p>This is typically not needed when schema validation is active.
 	 * However, without validation, this has to be switched to "true"
@@ -195,7 +195,7 @@ public class XmlBeanDefinitionReader extends AbstractBeanDefinitionReader {
 	}

 	/**
-	 * Return whether the XML parser should be XML namespace aware.
+	 * Return whether or not the XML parser should be XML namespace aware.
 	 */
 	public boolean isNamespaceAware() {
 		return this.namespaceAware;
@@ -547,8 +547,7 @@ public class XmlBeanDefinitionReader extends AbstractBeanDefinitionReader {
 	 * @see DefaultNamespaceHandlerResolver#DefaultNamespaceHandlerResolver(ClassLoader)
 	 */
 	protected NamespaceHandlerResolver createDefaultNamespaceHandlerResolver() {
-		ResourceLoader resourceLoader = getResourceLoader();
-		ClassLoader cl = (resourceLoader != null ? resourceLoader.getClassLoader() : getBeanClassLoader());
+		ClassLoader cl = (getResourceLoader() != null ? getResourceLoader().getClassLoader() : getBeanClassLoader());
 		return new DefaultNamespaceHandlerResolver(cl);
 	}

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -29,7 +29,6 @@ import org.springframework.util.StringUtils;
 * e.g. {@code UTF-8}, {@code ISO-8859-16}, etc.
 *
 * @author Arjen Poutsma
- * @author Sam Brannen
 * @since 2.5.4
 * @see Charset
 */
@@ -38,7 +37,7 @@ public class CharsetEditor extends PropertyEditorSupport {
 	@Override
 	public void setAsText(String text) throws IllegalArgumentException {
 		if (StringUtils.hasText(text)) {
-			setValue(Charset.forName(text.trim()));
+			setValue(Charset.forName(text));
 		}
 		else {
 			setValue(null);
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 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.
@@ -19,14 +19,11 @@ package org.springframework.beans.propertyeditors;
 import java.beans.PropertyEditorSupport;
 import java.util.Currency;

-import org.springframework.util.StringUtils;
-
 /**
 * Editor for {@code java.util.Currency}, translating currency codes into Currency
 * objects. Exposes the currency code as text representation of a Currency object.
 *
 * @author Juergen Hoeller
- * @author Sam Brannen
 * @since 3.0
 * @see java.util.Currency
 */
@@ -34,9 +31,6 @@ public class CurrencyEditor extends PropertyEditorSupport {

 	@Override
 	public void setAsText(String text) throws IllegalArgumentException {
-		if (StringUtils.hasText(text)) {
-			text = text.trim();
-		}
 		setValue(Currency.getInstance(text));
 	}

--- a/Show More
+++ b/Show More