Release version 3.2.6 (2021.0.6).

See #3828

.mvn/wrapper/maven-wrapper.properties

@@ -1,2 +1,2 @@
-#Mon Aug 14 07:45:45 EDT 2023
-distributionUrl=https\://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.4/apache-maven-3.9.4-bin.zip
+#Fri Sep 10 15:39:33 CEST 2021
+distributionUrl=https\://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.2/apache-maven-3.8.2-bin.zip

CI.adoc

@@ -1,6 +1,6 @@
 = Continuous Integration
 
-image:https://jenkins.spring.io/buildStatus/icon?job=spring-data-mongodb%2Fmain&subject=Moore%20(main)[link=https://jenkins.spring.io/view/SpringData/job/spring-data-mongodb/]
+image:https://jenkins.spring.io/buildStatus/icon?job=spring-data-mongodb%2Fmaster&subject=Moore%20(master)[link=https://jenkins.spring.io/view/SpringData/job/spring-data-mongodb/]
 image:https://jenkins.spring.io/buildStatus/icon?job=spring-data-mongodb%2F2.1.x&subject=Lovelace%20(2.1.x)[link=https://jenkins.spring.io/view/SpringData/job/spring-data-mongodb/]
 image:https://jenkins.spring.io/buildStatus/icon?job=spring-data-mongodb%2F1.10.x&subject=Ingalls%20(1.10.x)[link=https://jenkins.spring.io/view/SpringData/job/spring-data-mongodb/]
 

CONTRIBUTING.adoc

@@ -1,3 +1,3 @@
 = Spring Data contribution guidelines
 
-You find the contribution guidelines for Spring Data projects https://github.com/spring-projects/spring-data-build/blob/main/CONTRIBUTING.adoc[here].
+You find the contribution guidelines for Spring Data projects https://github.com/spring-projects/spring-data-build/blob/master/CONTRIBUTING.adoc[here].

Jenkinsfile

@@ -1,15 +1,9 @@
-def p = [:]
-node {
-	checkout scm
-	p = readProperties interpolate: true, file: 'ci/pipeline.properties'
-}
-
 pipeline {
 	agent none
 
 	triggers {
 		pollSCM 'H/10 * * * *'
-		upstream(upstreamProjects: "spring-data-commons/3.0.x", threshold: hudson.model.Result.SUCCESS)
+		upstream(upstreamProjects: "spring-data-commons/2.5.x", threshold: hudson.model.Result.SUCCESS)
 	}
 
 	options {
@@ -18,11 +12,63 @@ pipeline {
 	}
 
 	stages {
-		stage("test: baseline (main)") {
+		stage("Docker images") {
+			parallel {
+				stage('Publish JDK 8 + MongoDB 4.0') {
+					when {
+						changeset "ci/openjdk8-mongodb-4.0/**"
+					}
+					agent { label 'data' }
+					options { timeout(time: 30, unit: 'MINUTES') }
+
+					steps {
+						script {
+							def image = docker.build("springci/spring-data-openjdk8-with-mongodb-4.0.23", "ci/openjdk8-mongodb-4.0/")
+							docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
+								image.push()
+							}
+						}
+					}
+				}
+				stage('Publish JDK 8 + MongoDB 4.4') {
+					when {
+						changeset "ci/openjdk8-mongodb-4.4/**"
+					}
+					agent { label 'data' }
+					options { timeout(time: 30, unit: 'MINUTES') }
+
+					steps {
+						script {
+							def image = docker.build("springci/spring-data-openjdk8-with-mongodb-4.4.4", "ci/openjdk8-mongodb-4.4/")
+							docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
+								image.push()
+							}
+						}
+					}
+				}
+				stage('Publish JDK 15 + MongoDB 4.4') {
+					when {
+						changeset "ci/openjdk15-mongodb-4.4/**"
+					}
+					agent { label 'data' }
+					options { timeout(time: 30, unit: 'MINUTES') }
+
+					steps {
+						script {
+							def image = docker.build("springci/spring-data-openjdk15-with-mongodb-4.4.4", "ci/openjdk15-mongodb-4.4/")
+							docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
+								image.push()
+							}
+						}
+					}
+				}
+			}
+		}
+
+		stage("test: baseline (jdk8)") {
 			when {
-				beforeAgent(true)
 				anyOf {
-					branch(pattern: "main|(\\d\\.\\d\\.x)", comparator: "REGEXP")
+					branch '3.2.x'
 					not { triggeredBy 'UpstreamCause' }
 				}
 			}
@@ -31,17 +77,19 @@ pipeline {
 			}
 			options { timeout(time: 30, unit: 'MINUTES') }
 			environment {
-				ARTIFACTORY = credentials("${p['artifactory.credentials']}")
+				ARTIFACTORY = credentials('02bd1690-b54f-4c9f-819d-a77cb7a9822c')
 			}
 			steps {
 				script {
-					docker.image("harbor-repo.vmware.com/dockerhub-proxy-cache/springci/spring-data-with-mongodb-4.4:${p['java.main.tag']}").inside(p['docker.java.inside.basic']) {
-						sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
-						sh 'mongod --setParameter transactionLifetimeLimitSeconds=90 --setParameter maxTransactionLockRequestTimeoutMillis=10000 --dbpath /tmp/mongodb/db --replSet rs0 --fork --logpath /tmp/mongodb/log/mongod.log &'
-						sh 'sleep 10'
-						sh 'mongo --eval "rs.initiate({_id: \'rs0\', members:[{_id: 0, host: \'127.0.0.1:27017\'}]});"'
-						sh 'sleep 15'
-						sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml clean dependency:list test -Duser.name=jenkins -Dsort -U -B'
+					docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
+						docker.image('springci/spring-data-openjdk8-with-mongodb-4.0.23:latest').inside('-v $HOME:/tmp/jenkins-home') {
+							sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
+							sh 'mongod --setParameter transactionLifetimeLimitSeconds=90 --setParameter maxTransactionLockRequestTimeoutMillis=10000 --dbpath /tmp/mongodb/db --replSet rs0 --fork --logpath /tmp/mongodb/log/mongod.log &'
+							sh 'sleep 10'
+							sh 'mongo --eval "rs.initiate({_id: \'rs0\', members:[{_id: 0, host: \'127.0.0.1:27017\'}]});"'
+							sh 'sleep 15'
+							sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml clean dependency:list test -Duser.name=jenkins -Dsort -U -B'
+						}
 					}
 				}
 			}
@@ -49,75 +97,79 @@ pipeline {
 
 		stage("Test other configurations") {
 			when {
-				beforeAgent(true)
 				allOf {
-					branch(pattern: "main|(\\d\\.\\d\\.x)", comparator: "REGEXP")
+					branch '3.2.x'
 					not { triggeredBy 'UpstreamCause' }
 				}
 			}
 			parallel {
-
-				stage("test: MongoDB 5.0 (main)") {
+				stage("test: mongodb 4.0 (jdk8)") {
 					agent {
 						label 'data'
 					}
 					options { timeout(time: 30, unit: 'MINUTES') }
 					environment {
-						ARTIFACTORY = credentials("${p['artifactory.credentials']}")
+						ARTIFACTORY = credentials('02bd1690-b54f-4c9f-819d-a77cb7a9822c')
 					}
 					steps {
 						script {
-							docker.image("harbor-repo.vmware.com/dockerhub-proxy-cache/springci/spring-data-with-mongodb-5.0:${p['java.main.tag']}").inside(p['docker.java.inside.basic']) {
-								sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
-								sh 'mongod --setParameter transactionLifetimeLimitSeconds=90 --setParameter maxTransactionLockRequestTimeoutMillis=10000 --dbpath /tmp/mongodb/db --replSet rs0 --fork --logpath /tmp/mongodb/log/mongod.log &'
-								sh 'sleep 10'
-								sh 'mongo --eval "rs.initiate({_id: \'rs0\', members:[{_id: 0, host: \'127.0.0.1:27017\'}]});"'
-								sh 'sleep 15'
-								sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml clean dependency:list test -Duser.name=jenkins -Dsort -U -B'
+							docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
+								docker.image('springci/spring-data-openjdk8-with-mongodb-4.0.23:latest').inside('-v $HOME:/tmp/jenkins-home') {
+									sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
+									sh 'mongod --setParameter transactionLifetimeLimitSeconds=90 --setParameter maxTransactionLockRequestTimeoutMillis=10000 --dbpath /tmp/mongodb/db --replSet rs0 --fork --logpath /tmp/mongodb/log/mongod.log &'
+									sh 'sleep 10'
+									sh 'mongo --eval "rs.initiate({_id: \'rs0\', members:[{_id: 0, host: \'127.0.0.1:27017\'}]});"'
+									sh 'sleep 15'
+									sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml clean dependency:list test -Duser.name=jenkins -Dsort -U -B'
+								}
 							}
 						}
 					}
 				}
 
-				stage("test: MongoDB 6.0 (main)") {
+				stage("test: mongodb 4.4 (jdk8)") {
 					agent {
 						label 'data'
 					}
 					options { timeout(time: 30, unit: 'MINUTES') }
 					environment {
-						ARTIFACTORY = credentials("${p['artifactory.credentials']}")
+						ARTIFACTORY = credentials('02bd1690-b54f-4c9f-819d-a77cb7a9822c')
 					}
 					steps {
 						script {
-							docker.image("harbor-repo.vmware.com/dockerhub-proxy-cache/springci/spring-data-with-mongodb-6.0:${p['java.main.tag']}").inside(p['docker.java.inside.basic']) {
-								sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
-								sh 'mongod --setParameter transactionLifetimeLimitSeconds=90 --setParameter maxTransactionLockRequestTimeoutMillis=10000 --dbpath /tmp/mongodb/db --replSet rs0 --fork --logpath /tmp/mongodb/log/mongod.log &'
-								sh 'sleep 10'
-								sh 'mongosh --eval "rs.initiate({_id: \'rs0\', members:[{_id: 0, host: \'127.0.0.1:27017\'}]});"'
-								sh 'sleep 15'
-								sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml clean dependency:list test -Duser.name=jenkins -Dsort -U -B'
+							docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
+								docker.image('springci/spring-data-openjdk8-with-mongodb-4.4.4:latest').inside('-v $HOME:/tmp/jenkins-home') {
+									sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
+									sh 'mongod --setParameter transactionLifetimeLimitSeconds=90 --setParameter maxTransactionLockRequestTimeoutMillis=10000 --dbpath /tmp/mongodb/db --replSet rs0 --fork --logpath /tmp/mongodb/log/mongod.log &'
+									sh 'sleep 10'
+									sh 'mongo --eval "rs.initiate({_id: \'rs0\', members:[{_id: 0, host: \'127.0.0.1:27017\'}]});"'
+									sh 'sleep 15'
+									sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml clean dependency:list test -Duser.name=jenkins -Dsort -U -B'
+								}
 							}
 						}
 					}
 				}
 
-				stage("test: MongoDB 6.0 (next)") {
+				stage("test: baseline (jdk15)") {
 					agent {
 						label 'data'
 					}
 					options { timeout(time: 30, unit: 'MINUTES') }
 					environment {
-						ARTIFACTORY = credentials("${p['artifactory.credentials']}")
+						ARTIFACTORY = credentials('02bd1690-b54f-4c9f-819d-a77cb7a9822c')
 					}
 					steps {
 						script {
-							docker.image("harbor-repo.vmware.com/dockerhub-proxy-cache/springci/spring-data-with-mongodb-6.0:${p['java.next.tag']}").inside(p['docker.java.inside.basic']) {
-								sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
-								sh 'mongod --setParameter transactionLifetimeLimitSeconds=90 --setParameter maxTransactionLockRequestTimeoutMillis=10000 --dbpath /tmp/mongodb/db --replSet rs0 --fork --logpath /tmp/mongodb/log/mongod.log &'
-								sh 'sleep 10'
-								sh 'mongosh --eval "rs.initiate({_id: \'rs0\', members:[{_id: 0, host: \'127.0.0.1:27017\'}]});"'
-								sh 'sleep 15'
-								sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml clean dependency:list test -Duser.name=jenkins -Dsort -U -B'
+							docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
+								docker.image('springci/spring-data-openjdk15-with-mongodb-4.4.4:latest').inside('-v $HOME:/tmp/jenkins-home') {
+									sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
+									sh 'mongod --setParameter transactionLifetimeLimitSeconds=90 --setParameter maxTransactionLockRequestTimeoutMillis=10000 --dbpath /tmp/mongodb/db --replSet rs0 --fork --logpath /tmp/mongodb/log/mongod.log &'
+									sh 'sleep 10'
+									sh 'mongo --eval "rs.initiate({_id: \'rs0\', members:[{_id: 0, host: \'127.0.0.1:27017\'}]});"'
+									sh 'sleep 15'
+									sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml -Pjava11 clean dependency:list test -Duser.name=jenkins -Dsort -U -B'
+								}
 							}
 						}
 					}
@@ -127,9 +179,8 @@ pipeline {
 
 		stage('Release to artifactory') {
 			when {
-				beforeAgent(true)
 				anyOf {
-					branch(pattern: "main|(\\d\\.\\d\\.x)", comparator: "REGEXP")
+					branch '3.2.x'
 					not { triggeredBy 'UpstreamCause' }
 				}
 			}
@@ -139,21 +190,51 @@ pipeline {
 			options { timeout(time: 20, unit: 'MINUTES') }
 
 			environment {
-				ARTIFACTORY = credentials("${p['artifactory.credentials']}")
+				ARTIFACTORY = credentials('02bd1690-b54f-4c9f-819d-a77cb7a9822c')
 			}
 
 			steps {
 				script {
-					docker.image(p['docker.java.main.image']).inside(p['docker.java.inside.basic']) {
-						sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -v'
-						sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml -Pci,artifactory ' +
-								'-Dartifactory.server=https://repo.spring.io ' +
-								"-Dartifactory.username=${ARTIFACTORY_USR} " +
-								"-Dartifactory.password=${ARTIFACTORY_PSW} " +
-								"-Dartifactory.staging-repository=libs-snapshot-local " +
-								"-Dartifactory.build-name=spring-data-mongodb " +
-								"-Dartifactory.build-number=${BUILD_NUMBER} " +
-								'-Dmaven.test.skip=true clean deploy -U -B'
+					docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
+						docker.image('adoptopenjdk/openjdk8:latest').inside('-v $HOME:/tmp/jenkins-home') {
+							sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml -Pci,artifactory ' +
+									'-Dartifactory.server=https://repo.spring.io ' +
+									"-Dartifactory.username=${ARTIFACTORY_USR} " +
+									"-Dartifactory.password=${ARTIFACTORY_PSW} " +
+									"-Dartifactory.staging-repository=libs-snapshot-local " +
+									"-Dartifactory.build-name=spring-data-mongodb " +
+									"-Dartifactory.build-number=${BUILD_NUMBER} " +
+									'-Dmaven.test.skip=true clean deploy -U -B'
+						}
+					}
+				}
+			}
+		}
+
+		stage('Publish documentation') {
+			when {
+				branch '3.2.x'
+			}
+			agent {
+				label 'data'
+			}
+			options { timeout(time: 20, unit: 'MINUTES') }
+
+			environment {
+				ARTIFACTORY = credentials('02bd1690-b54f-4c9f-819d-a77cb7a9822c')
+			}
+
+			steps {
+				script {
+					docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
+						docker.image('adoptopenjdk/openjdk8:latest').inside('-v $HOME:/tmp/jenkins-home') {
+							sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml -Pci,distribute ' +
+									'-Dartifactory.server=https://repo.spring.io ' +
+									"-Dartifactory.username=${ARTIFACTORY_USR} " +
+									"-Dartifactory.password=${ARTIFACTORY_PSW} " +
+									"-Dartifactory.distribution-repository=temp-private-local " +
+									'-Dmaven.test.skip=true clean deploy -U -B'
+						}
 					}
 				}
 			}

README.adoc

@@ -1,19 +1,17 @@
-image:https://spring.io/badges/spring-data-mongodb/ga.svg[Spring Data MongoDB,link=https://spring.io/projects/spring-data-mongodb#quick-start] image:https://spring.io/badges/spring-data-mongodb/snapshot.svg[Spring Data MongoDB,link=https://spring.io/projects/spring-data-mongodb#quick-start]
+image:https://spring.io/badges/spring-data-mongodb/ga.svg[Spring Data MongoDB,link=https://projects.spring.io/spring-data-mongodb#quick-start] image:https://spring.io/badges/spring-data-mongodb/snapshot.svg[Spring Data MongoDB,link=https://projects.spring.io/spring-data-mongodb#quick-start]
 
-= Spring Data MongoDB image:https://jenkins.spring.io/buildStatus/icon?job=spring-data-mongodb%2Fmain&subject=Build[link=https://jenkins.spring.io/view/SpringData/job/spring-data-mongodb/] https://gitter.im/spring-projects/spring-data[image:https://badges.gitter.im/spring-projects/spring-data.svg[Gitter]]
+= Spring Data MongoDB image:https://jenkins.spring.io/buildStatus/icon?job=spring-data-mongodb%2Fmaster&subject=Build[link=https://jenkins.spring.io/view/SpringData/job/spring-data-mongodb/] https://gitter.im/spring-projects/spring-data[image:https://badges.gitter.im/spring-projects/spring-data.svg[Gitter]]
 
-The primary goal of the https://spring.io/projects/spring-data[Spring Data] project is to make it easier to build Spring-powered applications that use new data access technologies such as non-relational databases, map-reduce frameworks, and cloud based data services.
+The primary goal of the https://projects.spring.io/spring-data[Spring Data] project is to make it easier to build Spring-powered applications that use new data access technologies such as non-relational databases, map-reduce frameworks, and cloud based data services.
 
 The Spring Data MongoDB project aims to provide a familiar and consistent Spring-based programming model for new datastores while retaining store-specific features and capabilities.
 The Spring Data MongoDB project provides integration with the MongoDB document database.
 Key functional areas of Spring Data MongoDB are a POJO centric model for interacting with a MongoDB `+Document+` and easily writing a repository style data access layer.
 
-[[code-of-conduct]]
 == Code of Conduct
 
 This project is governed by the https://github.com/spring-projects/.github/blob/e3cc2ff230d8f1dca06535aa6b5a4a23815861d4/CODE_OF_CONDUCT.md[Spring Code of Conduct]. By participating, you are expected to uphold this code of conduct. Please report unacceptable behavior to spring-code-of-conduct@pivotal.io.
 
-[[getting-started]]
 == Getting Started
 
 Here is a quick teaser of an application using Spring Data Repositories in Java:
@@ -61,7 +59,6 @@ class ApplicationConfig extends AbstractMongoClientConfiguration {
 }
 ----
 
-[[maven-configuration]]
 === Maven configuration
 
 Add the Maven dependency:
@@ -71,35 +68,164 @@ Add the Maven dependency:
 <dependency>
   <groupId>org.springframework.data</groupId>
   <artifactId>spring-data-mongodb</artifactId>
-  <version>${version}</version>
+  <version>${version}.RELEASE</version>
 </dependency>
 ----
 
-If you'd rather like the latest snapshots of the upcoming major version, use our Maven snapshot repository
-and declare the appropriate dependency version.
+If you'd rather like the latest snapshots of the upcoming major version, use our Maven snapshot repository and declare the appropriate dependency version.
 
 [source,xml]
 ----
 <dependency>
   <groupId>org.springframework.data</groupId>
   <artifactId>spring-data-mongodb</artifactId>
-  <version>${version}-SNAPSHOT</version>
+  <version>${version}.BUILD-SNAPSHOT</version>
 </dependency>
 
 <repository>
-  <id>spring-snapshot</id>
+  <id>spring-libs-snapshot</id>
   <name>Spring Snapshot Repository</name>
-  <url>https://repo.spring.io/snapshot</url>
+  <url>https://repo.spring.io/libs-snapshot</url>
 </repository>
 ----
 
-[[upgrading]]
-== Upgrading
+== Upgrading from 2.x
 
-Instructions for how to upgrade from earlier versions of Spring Data are provided on the project https://github.com/spring-projects/spring-data-commons/wiki[wiki].
-Follow the links in the https://github.com/spring-projects/spring-data-commons/wiki#release-notes[release notes section] to find the version that you want to upgrade to.
+The 4.0 MongoDB Java Driver does no longer support certain features that have already been deprecated in one of the last minor versions.
+Some of the changes affect the initial setup configuration as well as compile/runtime features. We summarized the most typical changes one might encounter.
+
+=== XML Namespace
+
+.Changed XML Namespace Elements and Attributes:
+|===
+Element / Attribute | 2.x | 3.x
+
+| `<mongo:mongo-client />`
+| Used to create a `com.mongodb.MongoClient`
+| Now exposes a `com.mongodb.client.MongoClient`
+
+| `<mongo:mongo-client replica-set="..." />`
+| Was a comma delimited list of replica set members (host/port)
+| Now defines the replica set name. +
+Use `<mongo:client-settings cluster-hosts="..." />` instead
+
+| `<mongo:db-factory writeConcern="..." />`
+| NONE, NORMAL, SAFE, FSYNC_SAFE, REPLICAS_SAFE, MAJORITY
+| W1, W2, W3, UNAKNOWLEDGED, AKNOWLEDGED, JOURNALED, MAJORITY
+|===
+
+.Removed XML Namespace Elements and Attributes:
+|===
+Element / Attribute | Replacement in 3.x | Comment
+
+| `<mongo:db-factory mongo-ref="..." />`
+| `<mongo:db-factory mongo-client-ref="..." />`
+| Referencing a `com.mongodb.client.MongoClient`.
+
+| `<mongo:mongo-client credentials="..." />`
+| `<mongo:mongo-client credential="..." />`
+| Single authentication data instead of list.
+
+| `<mongo:client-options />`
+| `<mongo:client-settings />`
+| See `com.mongodb.MongoClientSettings` for details.
+|===
+
+.New XML Namespace Elements and Attributes:
+|===
+Element | Comment
+
+| `<mongo:db-factory mongo-client-ref="..." />`
+| Replacement for `<mongo:db-factory mongo-ref="..." />`
+
+| `<mongo:db-factory connection-string="..." />`
+| Replacement for `uri` and `client-uri`.
+
+| `<mongo:mongo-client connection-string="..." />`
+| Replacement for `uri` and `client-uri`.
+
+| `<mongo:client-settings />`
+| Namespace element for `com.mongodb.MongoClientSettings`.
+
+|===
+
+=== Java Configuration
+
+.Java API changes
+|===
+Type | Comment
+
+| `MongoClientFactoryBean`
+| Creates `com.mongodb.client.MongoClient` instead of `com.mongodb.MongoClient` +
+Uses `MongoClientSettings` instead of `MongoClientOptions`.
+
+| `MongoDataIntegrityViolationException`
+| Uses `WriteConcernResult` instead of `WriteResult`.
+
+| `BulkOperationException`
+| Uses `MongoBulkWriteException` and `com.mongodb.bulk.BulkWriteError` instead of `BulkWriteException` and `com.mongodb.BulkWriteError`
+
+| `ReactiveMongoClientFactoryBean`
+| Uses `com.mongodb.MongoClientSettings` instead of `com.mongodb.async.client.MongoClientSettings`
+
+| `ReactiveMongoClientSettingsFactoryBean`
+| Now produces `com.mongodb.MongoClientSettings` instead of `com.mongodb.async.client.MongoClientSettings`
+|===
+
+.Removed Java API:
+|===
+2.x | Replacement in 3.x | Comment
+
+| `MongoClientOptionsFactoryBean`
+| `MongoClientSettingsFactoryBean`
+| Creating a `com.mongodb.MongoClientSettings`.
+
+| `AbstractMongoConfiguration`
+| `AbstractMongoClientConfiguration` +
+(Available since 2.1)
+| Using `com.mongodb.client.MongoClient`.
+
+| `MongoDbFactory#getLegacyDb()`
+| -
+| -
+
+| `SimpleMongoDbFactory`
+| `SimpleMongoClientDbFactory` +
+(Available since 2.1)
+|
+
+| `MapReduceOptions#getOutputType()`
+| `MapReduceOptions#getMapReduceAction()`
+| Returns `MapReduceAction` instead of `MapReduceCommand.OutputType`.
+
+| `Meta\|Query` maxScan & snapshot
+|
+|
+|===
+
+=== Other Changes
+
+==== UUID Types
+
+The MongoDB UUID representation can now be configured with different formats.
+This has to be done via `MongoClientSettings` as shown in the snippet below.
+
+.UUID Codec Configuration
+====
+[source,java]
+----
+static class Config extends AbstractMongoClientConfiguration {
+
+    @Override
+    public void configureClientSettings(MongoClientSettings.Builder builder) {
+        builder.uuidRepresentation(UuidRepresentation.STANDARD);
+    }
+
+    // ...
+}
+----
+====
 
-[[getting-help]]
 == Getting Help
 
 Having trouble with Spring Data? We’d love to help!
@@ -113,7 +239,6 @@ If you are just starting out with Spring, try one of the https://spring.io/guide
 You can also chat with the community on https://gitter.im/spring-projects/spring-data[Gitter].
 * Report bugs with Spring Data MongoDB at https://github.com/spring-projects/spring-data-mongodb/issues[github.com/spring-projects/spring-data-mongodb/issues].
 
-[[reporting-issues]]
 == Reporting Issues
 
 Spring Data uses Github as issue tracking system to record bugs and feature requests.
@@ -124,96 +249,19 @@ If you want to raise an issue, please follow the recommendations below:
 * Please provide as much information as possible with the issue report, we like to know the version of Spring Data that you are using, the JVM version, Stacktrace, etc.
 * If you need to paste code, or include a stack trace use https://guides.github.com/features/mastering-markdown/[Markdown] code fences +++```+++.
 
-[[guides]]
-== Guides
-
-The https://spring.io/[spring.io] site contains several guides that show how to use Spring Data step-by-step:
-
-* https://spring.io/guides/gs/accessing-data-mongodb/[Accessing Data with MongoDB] is a very basic guide that shows you how to create a simple application and how to access data using repositories.
-* https://spring.io/guides/gs/accessing-mongodb-data-rest/[Accessing MongoDB Data with REST] is a guide to creating a REST web service exposing data stored in MongoDB through repositories.
-
-[[examples]]
-== Examples
-
-* https://github.com/spring-projects/spring-data-examples/[Spring Data Examples] contains example projects that explain specific features in more detail.
-
-[[building-from-source]]
 == Building from Source
 
-You do not need to build from source to use Spring Data. Binaries are available in https://repo.spring.io[repo.spring.io]
-and accessible from Maven using the Maven configuration noted <<maven-configuration,above>>.
-
-NOTE: Configuration for Gradle is similar to Maven.
-
-The best way to get started is by creating a Spring Boot project using MongoDB on https://start.spring.io[start.spring.io].
-Follow this https://start.spring.io/#type=maven-project&language=java&platformVersion=3.0.0&packaging=jar&jvmVersion=17&groupId=com.example&artifactId=demo&name=demo&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.demo&dependencies=data-mongodb[link]
-to build an imperative application and this https://start.spring.io/#type=maven-project&language=java&platformVersion=3.0.0&packaging=jar&jvmVersion=17&groupId=com.example&artifactId=demo&name=demo&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.demo&dependencies=data-mongodb-reactive[link]
-to build a reactive one.
-
-However, if you want to try out the latest and greatest, Spring Data MongoDB can be easily built with the https://github.com/takari/maven-wrapper[Maven wrapper]
-and minimally, JDK 17 (https://www.oracle.com/java/technologies/downloads/[JDK downloads]).
-
-In order to build Spring Data MongoDB, you will need to https://www.mongodb.com/try/download/community[download]
-and https://docs.mongodb.com/manual/installation/[install a MongoDB distribution].
-
-Once you have installed MongoDB, you need to start a MongoDB server. It is convenient to set an environment variable to
-your MongoDB installation directory (e.g. `MONGODB_HOME`).
-
-To run the full test suite, a https://docs.mongodb.com/manual/tutorial/deploy-replica-set/[MongoDB Replica Set]
-is required.
-
-To run the MongoDB server enter the following command from a command-line:
-
-[source,bash]
-----
-$ $MONGODB_HOME/bin/mongod --dbpath $MONGODB_HOME/runtime/data --ipv6 --port 27017 --replSet rs0
-...
-"msg":"Successfully connected to host"
-----
-
-Once the MongoDB server starts up, you should see the message (`msg`), "_Successfully connected to host_".
-
-Notice the `--dbpath` option to the `mongod` command. You can set this to anything you like, but in this case, we set
-the absolute path to a sub-directory (`runtime/data/`) under the MongoDB installation directory (in `$MONGODB_HOME`).
-
-You need to initialize the MongoDB replica set only once on the first time the MongoDB server is started.
-To initialize the replica set, start a mongo client:
-
-[source,bash]
-----
-$ $MONGODB_HOME/bin/mongo
-MongoDB server version: 6.0.0
-...
-----
-
-Then enter the following command:
-
-[source,bash]
-----
-mongo> rs.initiate({ _id: 'rs0', members: [ { _id: 0, host: '127.0.0.1:27017' } ] })
-----
-
-Finally, on UNIX-based system (for example, Linux or Mac OS X) you may need to adjust the `ulimit`.
-In case you need to, you can adjust the `ulimit` with the following command (32768 is just a recommendation):
-
-[source,bash]
-----
-$ ulimit -n 32768
-----
-
-You can use `ulimit -a` again to verify the `ulimit` for "_open files_" was set appropriately.
-
-Now you are ready to build Spring Data MongoDB. Simply enter the following `mvnw` (Maven Wrapper) command:
+You don’t need to build from source to use Spring Data (binaries in https://repo.spring.io[repo.spring.io]), but if you want to try out the latest and greatest, Spring Data can be easily built with the https://github.com/takari/maven-wrapper[maven wrapper].
+You also need JDK 1.8.
 
 [source,bash]
 ----
  $ ./mvnw clean install
 ----
 
-If you want to build with the regular `mvn` command, you will need https://maven.apache.org/run-maven/index.html[Maven v3.8.0 or above].
+If you want to build with the regular `mvn` command, you will need https://maven.apache.org/run-maven/index.html[Maven v3.5.0 or above].
 
-_Also see link:CONTRIBUTING.adoc[CONTRIBUTING.adoc] if you wish to submit pull requests, and in particular, please sign
-the https://cla.pivotal.io/sign/spring[Contributor’s Agreement] before your first non-trivial change._
+_Also see link:CONTRIBUTING.adoc[CONTRIBUTING.adoc] if you wish to submit pull requests, and in particular please sign the https://cla.pivotal.io/sign/spring[Contributor’s Agreement] before your first non-trivial change._
 
 === Building reference documentation
 
@@ -226,7 +274,17 @@ Building the documentation builds also the project without running tests.
 
 The generated documentation is available from `target/site/reference/html/index.html`.
 
-[[license]]
+== Guides
+
+The https://spring.io/[spring.io] site contains several guides that show how to use Spring Data step-by-step:
+
+* https://spring.io/guides/gs/accessing-data-mongodb/[Accessing Data with MongoDB] is a very basic guide that shows you how to create a simple application and how to access data using repositories.
+* https://spring.io/guides/gs/accessing-mongodb-data-rest/[Accessing MongoDB Data with REST] is a guide to creating a REST web service exposing data stored in MongoDB through repositories.
+
+== Examples
+
+* https://github.com/spring-projects/spring-data-examples/[Spring Data Examples] contains example projects that explain specific features in more detail.
+
 == License
 
 Spring Data MongoDB is Open Source software released under the https://www.apache.org/licenses/LICENSE-2.0.html[Apache 2.0 license].

ci/openjdk11-mongodb-4.4/Dockerfile

@@ -0,0 +1,15 @@
+FROM adoptopenjdk/openjdk11:latest
+
+ENV TZ=Etc/UTC
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN set -eux; \
+	apt-get update && apt-get install -y apt-transport-https apt-utils gnupg2 ; \
+	apt-key adv --keyserver hkps://keyserver.ubuntu.com:443 --recv 656408E390CFB1F5 ; \
+	echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.4 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-4.4.list; \
+	echo ${TZ} > /etc/timezone;
+
+RUN apt-get update ; \
+	apt-get install -y mongodb-org=4.4.4 mongodb-org-server=4.4.4 mongodb-org-shell=4.4.4 mongodb-org-mongos=4.4.4 mongodb-org-tools=4.4.4 ; \
+	apt-get clean; \
+	rm -rf /var/lib/apt/lists/*;

ci/openjdk15-mongodb-4.4/Dockerfile

@@ -0,0 +1,15 @@
+FROM adoptopenjdk/openjdk15:latest
+
+ENV TZ=Etc/UTC
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN set -eux; \
+	apt-get update && apt-get install -y apt-transport-https apt-utils gnupg2 ; \
+	apt-key adv --keyserver hkps://keyserver.ubuntu.com:443 --recv 656408E390CFB1F5 ; \
+	echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.4 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-4.4.list; \
+	echo ${TZ} > /etc/timezone;
+
+RUN apt-get update ; \
+	apt-get install -y mongodb-org=4.4.4 mongodb-org-server=4.4.4 mongodb-org-shell=4.4.4 mongodb-org-mongos=4.4.4 mongodb-org-tools=4.4.4 ; \
+	apt-get clean; \
+	rm -rf /var/lib/apt/lists/*;

ci/openjdk8-mongodb-4.0/Dockerfile

@@ -0,0 +1,15 @@
+FROM adoptopenjdk/openjdk8:latest
+
+ENV TZ=Etc/UTC
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN RUN set -eux; \
+	apt-get update && apt-get install -y apt-transport-https apt-utils gnupg2 ; \
+	apt-key adv --keyserver hkps://keyserver.ubuntu.com:443 --recv 9DA31620334BD75D9DCB49F368818C72E52529D4 ; \
+	echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-4.0.list; \
+	echo ${TZ} > /etc/timezone;
+
+RUN apt-get update ; \
+	apt-get install -y mongodb-org=4.0.23 mongodb-org-server=4.0.23 mongodb-org-shell=4.0.23 mongodb-org-mongos=4.0.23 mongodb-org-tools=4.0.23 ; \
+	apt-get clean; \
+	rm -rf /var/lib/apt/lists/*;

ci/openjdk8-mongodb-4.4/Dockerfile

@@ -0,0 +1,17 @@
+FROM adoptopenjdk/openjdk8:latest
+
+ENV TZ=Etc/UTC
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN set -eux; \
+	apt-get update && apt-get install -y apt-transport-https apt-utils gnupg2 ; \
+	apt-key adv --keyserver hkps://keyserver.ubuntu.com:443 --recv 656408E390CFB1F5 ; \
+	echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.4 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-4.4.list; \
+	echo ${TZ} > /etc/timezone;
+
+RUN apt-get update ; \
+	ln -T /bin/true /usr/bin/systemctl ; \
+	apt-get install -y mongodb-org=4.4.4 mongodb-org-server=4.4.4 mongodb-org-shell=4.4.4 mongodb-org-mongos=4.4.4 mongodb-org-tools=4.4.4 ; \
+	rm /usr/bin/systemctl ; \
+	apt-get clean; \
+	rm -rf /var/lib/apt/lists/*;

ci/pipeline.properties

@@ -1,27 +0,0 @@
-# Java versions
-java.main.tag=17.0.8_7-jdk-focal
-java.next.tag=20-jdk-jammy
-
-# Docker container images - standard
-docker.java.main.image=harbor-repo.vmware.com/dockerhub-proxy-cache/library/eclipse-temurin:${java.main.tag}
-docker.java.next.image=harbor-repo.vmware.com/dockerhub-proxy-cache/library/eclipse-temurin:${java.next.tag}
-
-# Supported versions of MongoDB
-docker.mongodb.4.4.version=4.4.23
-docker.mongodb.5.0.version=5.0.19
-docker.mongodb.6.0.version=6.0.8
-
-# Supported versions of Redis
-docker.redis.6.version=6.2.13
-
-# Supported versions of Cassandra
-docker.cassandra.3.version=3.11.15
-
-# Docker environment settings
-docker.java.inside.basic=-v $HOME:/tmp/jenkins-home
-docker.java.inside.docker=-u root -v /var/run/docker.sock:/var/run/docker.sock -v /usr/bin/docker:/usr/bin/docker -v $HOME:/tmp/jenkins-home
-
-# Credentials
-docker.registry=
-docker.credentials=hub.docker.com-springbuildmaster
-artifactory.credentials=02bd1690-b54f-4c9f-819d-a77cb7a9822c

pom.xml

@@ -5,17 +5,17 @@
 
 	<groupId>org.springframework.data</groupId>
 	<artifactId>spring-data-mongodb-parent</artifactId>
-	<version>4.0.10-SNAPSHOT</version>
+	<version>3.2.6</version>
 	<packaging>pom</packaging>
 
 	<name>Spring Data MongoDB</name>
 	<description>MongoDB support for Spring Data</description>
-	<url>https://spring.io/projects/spring-data-mongodb</url>
+	<url>https://projects.spring.io/spring-data-mongodb</url>
 
 	<parent>
 		<groupId>org.springframework.data.build</groupId>
 		<artifactId>spring-data-parent</artifactId>
-		<version>3.0.10-SNAPSHOT</version>
+		<version>2.5.6</version>
 	</parent>
 
 	<modules>
@@ -26,8 +26,8 @@
 	<properties>
 		<project.type>multi</project.type>
 		<dist.id>spring-data-mongodb</dist.id>
-		<springdata.commons>3.0.10-SNAPSHOT</springdata.commons>
-		<mongo>4.8.2</mongo>
+		<springdata.commons>2.5.6</springdata.commons>
+		<mongo>4.2.3</mongo>
 		<mongo.reactivestreams>${mongo}</mongo.reactivestreams>
 		<jmh.version>1.19</jmh.version>
 	</properties>
@@ -112,17 +112,6 @@
 		</developer>
 	</developers>
 
-	<scm>
-		<connection>scm:git:https://github.com/spring-projects/spring-data-mongodb.git</connection>
-		<developerConnection>scm:git:git@github.com:spring-projects/spring-data-mongodb.git</developerConnection>
-		<url>https://github.com/spring-projects/spring-data-mongodb</url>
-	</scm>
-
-	<issueManagement>
-		<system>GitHub</system>
-		<url>https://github.com/spring-projects/spring-data-mongodb/issues</url>
-	</issueManagement>
-
 	<profiles>
 		<profile>
 			<id>benchmarks</id>
@@ -145,19 +134,30 @@
 
 	<repositories>
 		<repository>
-			<id>spring-snapshot</id>
-			<url>https://repo.spring.io/snapshot</url>
-			<snapshots>
-				<enabled>true</enabled>
-			</snapshots>
-			<releases>
-				<enabled>false</enabled>
-			</releases>
+			<id>spring-libs-release</id>
+			<url>https://repo.spring.io/libs-release</url>
 		</repository>
 		<repository>
-			<id>spring-milestone</id>
-			<url>https://repo.spring.io/milestone</url>
+			<id>sonatype-libs-snapshot</id>
+			<url>https://oss.sonatype.org/content/repositories/snapshots</url>
+			<releases>
+        <enabled>false</enabled>
+      </releases>
+			<snapshots>
+        <enabled>true</enabled>
+      </snapshots>
 		</repository>
 	</repositories>
 
+	<pluginRepositories>
+		<pluginRepository>
+			<id>spring-plugins-release</id>
+			<url>https://repo.spring.io/plugins-release</url>
+		</pluginRepository>
+		<pluginRepository>
+			<id>spring-libs-milestone</id>
+			<url>https://repo.spring.io/libs-milestone</url>
+		</pluginRepository>
+	</pluginRepositories>
+
 </project>

spring-data-mongodb-benchmarks/pom.xml

@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>4.0.10-SNAPSHOT</version>
+		<version>3.2.6</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 

spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/core/ProjectionsBenchmark.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.

spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/core/convert/DbRefMappingBenchmark.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.

spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/core/convert/MappingMongoConverterBenchmark.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.

spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/AbstractMicrobenchmark.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.
@@ -322,7 +322,7 @@ public class AbstractMicrobenchmark {
 		try {
 			ResultsWriter.forUri(uri).write(results);
 		} catch (Exception e) {
-			System.err.println(String.format("Cannot save benchmark results to '%s'; Error was %s", uri, e));
+			System.err.println(String.format("Cannot save benchmark results to '%s'. Error was %s.", uri, e));
 		}
 	}
 }

spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/HttpResultsWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.

spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/MongoResultsWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.

spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/ResultsWriter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.

spring-data-mongodb-distribution/pom.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 
 	<modelVersion>4.0.0</modelVersion>
 
@@ -15,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>4.0.10-SNAPSHOT</version>
+		<version>3.2.6</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 
@@ -35,8 +34,7 @@
 				<artifactId>asciidoctor-maven-plugin</artifactId>
 				<configuration>
 					<attributes>
-						<mongo-reactivestreams>${mongo.reactivestreams}
-						</mongo-reactivestreams>
+						<mongo-reactivestreams>${mongo.reactivestreams}</mongo-reactivestreams>
 						<reactor>${reactor}</reactor>
 					</attributes>
 				</configuration>

spring-data-mongodb/pom.xml

@@ -1,7 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 
 	<modelVersion>4.0.0</modelVersion>
 
@@ -13,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>4.0.10-SNAPSHOT</version>
+		<version>3.2.6</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 
@@ -89,13 +87,6 @@
 			<optional>true</optional>
 		</dependency>
 
-		<dependency>
-			<groupId>com.google.code.findbugs</groupId>
-			<artifactId>jsr305</artifactId>
-			<version>3.0.2</version>
-			<optional>true</optional>
-		</dependency>
-
 		<!-- reactive -->
 
 		<dependency>
@@ -124,6 +115,27 @@
 			<optional>true</optional>
 		</dependency>
 
+		<dependency>
+			<groupId>io.reactivex</groupId>
+			<artifactId>rxjava</artifactId>
+			<version>${rxjava}</version>
+			<optional>true</optional>
+		</dependency>
+
+		<dependency>
+			<groupId>io.reactivex</groupId>
+			<artifactId>rxjava-reactive-streams</artifactId>
+			<version>${rxjava-reactive-streams}</version>
+			<optional>true</optional>
+		</dependency>
+
+		<dependency>
+			<groupId>io.reactivex.rxjava2</groupId>
+			<artifactId>rxjava</artifactId>
+			<version>${rxjava2}</version>
+			<optional>true</optional>
+		</dependency>
+
 		<dependency>
 			<groupId>io.reactivex.rxjava3</groupId>
 			<artifactId>rxjava</artifactId>
@@ -133,6 +145,12 @@
 
 		<!-- CDI -->
 		<!-- Dependency order required to build against CDI 1.0 and test with CDI 2.0 -->
+		<dependency>
+			<groupId>org.apache.geronimo.specs</groupId>
+			<artifactId>geronimo-jcdi_2.0_spec</artifactId>
+			<version>1.0.1</version>
+			<scope>test</scope>
+		</dependency>
 
 		<dependency>
 			<groupId>javax.interceptor</groupId>
@@ -142,48 +160,31 @@
 		</dependency>
 
 		<dependency>
-			<groupId>jakarta.enterprise</groupId>
-			<artifactId>jakarta.enterprise.cdi-api</artifactId>
+			<groupId>javax.enterprise</groupId>
+			<artifactId>cdi-api</artifactId>
 			<version>${cdi}</version>
 			<scope>provided</scope>
 			<optional>true</optional>
 		</dependency>
 
 		<dependency>
-			<groupId>jakarta.annotation</groupId>
-			<artifactId>jakarta.annotation-api</artifactId>
-			<version>${jakarta-annotation-api}</version>
+			<groupId>javax.annotation</groupId>
+			<artifactId>javax.annotation-api</artifactId>
+			<version>${javax-annotation-api}</version>
 			<scope>test</scope>
 		</dependency>
 
 		<dependency>
 			<groupId>org.apache.openwebbeans</groupId>
 			<artifactId>openwebbeans-se</artifactId>
-			<classifier>jakarta</classifier>
-			<version>${webbeans}</version>
-			<scope>test</scope>
-		</dependency>
-
-		<dependency>
-			<groupId>org.apache.openwebbeans</groupId>
-			<artifactId>openwebbeans-spi</artifactId>
-			<classifier>jakarta</classifier>
-			<version>${webbeans}</version>
-			<scope>test</scope>
-		</dependency>
-
-		<dependency>
-			<groupId>org.apache.openwebbeans</groupId>
-			<artifactId>openwebbeans-impl</artifactId>
-			<classifier>jakarta</classifier>
 			<version>${webbeans}</version>
 			<scope>test</scope>
 		</dependency>
 
 		<!-- JSR 303 Validation -->
 		<dependency>
-			<groupId>jakarta.validation</groupId>
-			<artifactId>jakarta.validation-api</artifactId>
+			<groupId>javax.validation</groupId>
+			<artifactId>validation-api</artifactId>
 			<version>${validation}</version>
 			<optional>true</optional>
 		</dependency>
@@ -196,37 +197,30 @@
 		</dependency>
 
 		<dependency>
-			<groupId>io.micrometer</groupId>
-			<artifactId>micrometer-observation</artifactId>
-			<optional>true</optional>
-		</dependency>
-
-		<dependency>
-			<groupId>io.micrometer</groupId>
-			<artifactId>micrometer-tracing</artifactId>
-			<optional>true</optional>
-		</dependency>
-
-		<dependency>
-			<groupId>org.hibernate.validator</groupId>
+			<groupId>org.hibernate</groupId>
 			<artifactId>hibernate-validator</artifactId>
-			<version>7.0.1.Final</version>
+			<version>5.4.3.Final</version>
 			<scope>test</scope>
 		</dependency>
 
 		<dependency>
-			<groupId>jakarta.el</groupId>
-			<artifactId>jakarta.el-api</artifactId>
-			<version>4.0.0</version>
-			<scope>provided</scope>
-			<optional>true</optional>
+			<groupId>org.glassfish</groupId>
+			<artifactId>javax.el</artifactId>
+			<version>3.0.1-b11</version>
+			<scope>test</scope>
 		</dependency>
 
 		<dependency>
-			<groupId>org.glassfish</groupId>
-			<artifactId>jakarta.el</artifactId>
-			<version>4.0.2</version>
-			<scope>provided</scope>
+			<groupId>joda-time</groupId>
+			<artifactId>joda-time</artifactId>
+			<version>${jodatime}</version>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>org.threeten</groupId>
+			<artifactId>threetenbp</artifactId>
+			<version>${threetenbp}</version>
 			<optional>true</optional>
 		</dependency>
 
@@ -236,6 +230,13 @@
 			<optional>true</optional>
 		</dependency>
 
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>jul-to-slf4j</artifactId>
+			<version>${slf4j}</version>
+			<scope>test</scope>
+		</dependency>
+
 		<dependency>
 			<groupId>nl.jqno.equalsverifier</groupId>
 			<artifactId>equalsverifier</artifactId>
@@ -271,9 +272,9 @@
 		</dependency>
 
 		<dependency>
-			<groupId>jakarta.transaction</groupId>
-			<artifactId>jakarta.transaction-api</artifactId>
-			<version>2.0.0</version>
+			<groupId>javax.transaction</groupId>
+			<artifactId>jta</artifactId>
+			<version>1.1</version>
 			<scope>test</scope>
 		</dependency>
 
@@ -304,43 +305,11 @@
 
 		<dependency>
 			<groupId>io.mockk</groupId>
-			<artifactId>mockk-jvm</artifactId>
+			<artifactId>mockk</artifactId>
 			<version>${mockk}</version>
 			<scope>test</scope>
 		</dependency>
 
-		<dependency>
-			<groupId>io.micrometer</groupId>
-			<artifactId>micrometer-test</artifactId>
-			<scope>test</scope>
-			<exclusions>
-				<exclusion>
-					<groupId>com.github.tomakehurst</groupId>
-					<artifactId>wiremock-jre8-standalone</artifactId>
-				</exclusion>
-			</exclusions>
-		</dependency>
-		<dependency>
-			<groupId>io.micrometer</groupId>
-			<artifactId>micrometer-tracing-test</artifactId>
-			<scope>test</scope>
-		</dependency>
-
-		<dependency>
-			<groupId>io.micrometer</groupId>
-			<artifactId>micrometer-tracing-integration-test</artifactId>
-			<scope>test</scope>
-		</dependency>
-
-		<!-- jMolecules -->
-
-		<dependency>
-			<groupId>org.jmolecules</groupId>
-			<artifactId>jmolecules-ddd</artifactId>
-			<version>${jmolecules}</version>
-			<scope>test</scope>
-		</dependency>
-
 	</dependencies>
 
 	<build>
@@ -365,11 +334,8 @@
 							<goal>test-process</goal>
 						</goals>
 						<configuration>
-							<outputDirectory>target/generated-test-sources
-							</outputDirectory>
-							<processor>
-								org.springframework.data.mongodb.repository.support.MongoAnnotationProcessor
-							</processor>
+							<outputDirectory>target/generated-test-sources</outputDirectory>
+							<processor>org.springframework.data.mongodb.repository.support.MongoAnnotationProcessor</processor>
 						</configuration>
 					</execution>
 				</executions>
@@ -389,9 +355,7 @@
 						<exclude>**/ReactivePerformanceTests.java</exclude>
 					</excludes>
 					<systemPropertyVariables>
-						<java.util.logging.config.file>
-							src/test/resources/logging.properties
-						</java.util.logging.config.file>
+						<java.util.logging.config.file>src/test/resources/logging.properties</java.util.logging.config.file>
 						<reactor.trace.cancel>true</reactor.trace.cancel>
 					</systemPropertyVariables>
 				</configuration>

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/BindableMongoExpression.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021-2023 the original author or authors.
+ * Copyright 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.
@@ -31,7 +31,7 @@ import org.springframework.util.StringUtils;
  * expression. The expression will be wrapped within <code>{ ... }</code> if necessary. The actual parsing and parameter
  * binding of placeholders like {@code ?0} is delayed upon first call on the the target {@link Document} via
  * {@link #toDocument()}.
- * <br />
+ * <p />
  *
  * <pre class="code">
  * $toUpper : $name                -> { '$toUpper' : '$name' }
@@ -103,11 +103,19 @@ public class BindableMongoExpression implements MongoExpression {
 		return new BindableMongoExpression(expressionString, codecRegistryProvider, args);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.MongoExpression#toDocument()
+	 */
 	@Override
 	public Document toDocument() {
 		return target.get();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see java.lang.Object#toString()
+	 */
 	@Override
 	public String toString() {
 		return "BindableMongoExpression{" + "expressionString='" + expressionString + '\'' + ", args="

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/BulkOperationException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2023 the original author or authors.
+ * Copyright 2015-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ClientSessionException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/CodecRegistryProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.
@@ -62,7 +62,7 @@ public interface CodecRegistryProvider {
 	 */
 	default <T> Optional<Codec<T>> getCodecFor(Class<T> type) {
 
-		Assert.notNull(type, "Type must not be null");
+		Assert.notNull(type, "Type must not be null!");
 
 		try {
 			return Optional.of(getCodecRegistry().get(type));

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/InvalidMongoDbApiUsageException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2023 the original author or authors.
+ * Copyright 2010-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/LazyLoadingException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2023 the original author or authors.
+ * Copyright 2013-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoCollectionUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.
@@ -20,8 +20,8 @@ import org.springframework.util.StringUtils;
 
 /**
  * Helper class featuring helper methods for working with MongoDb collections.
- * <br />
- * <br />
+ * <p/>
+ * <p/>
  * Mainly intended for internal use within the framework.
  *
  * @author Thomas Risberg

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDatabaseFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDatabaseUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -30,7 +30,7 @@ import com.mongodb.client.MongoDatabase;
  * Helper class for managing a {@link MongoDatabase} instances via {@link MongoDatabaseFactory}. Used for obtaining
  * {@link ClientSession session bound} resources, such as {@link MongoDatabase} and
  * {@link com.mongodb.client.MongoCollection} suitable for transactional usage.
- * <br />
+ * <p />
  * <strong>Note:</strong> Intended for internal usage only.
  *
  * @author Christoph Strobl
@@ -43,7 +43,7 @@ public class MongoDatabaseUtils {
 	/**
 	 * Obtain the default {@link MongoDatabase database} form the given {@link MongoDatabaseFactory factory} using
 	 * {@link SessionSynchronization#ON_ACTUAL_TRANSACTION native session synchronization}.
-	 * <br />
+	 * <p />
 	 * Registers a {@link MongoSessionSynchronization MongoDB specific transaction synchronization} within the current
 	 * {@link Thread} if {@link TransactionSynchronizationManager#isSynchronizationActive() synchronization is active}.
 	 *
@@ -56,7 +56,7 @@ public class MongoDatabaseUtils {
 
 	/**
 	 * Obtain the default {@link MongoDatabase database} form the given {@link MongoDatabaseFactory factory}.
-	 * <br />
+	 * <p />
 	 * Registers a {@link MongoSessionSynchronization MongoDB specific transaction synchronization} within the current
 	 * {@link Thread} if {@link TransactionSynchronizationManager#isSynchronizationActive() synchronization is active}.
 	 *
@@ -71,7 +71,7 @@ public class MongoDatabaseUtils {
 	/**
 	 * Obtain the {@link MongoDatabase database} with given name form the given {@link MongoDatabaseFactory factory} using
 	 * {@link SessionSynchronization#ON_ACTUAL_TRANSACTION native session synchronization}.
-	 * <br />
+	 * <p />
 	 * Registers a {@link MongoSessionSynchronization MongoDB specific transaction synchronization} within the current
 	 * {@link Thread} if {@link TransactionSynchronizationManager#isSynchronizationActive() synchronization is active}.
 	 *
@@ -85,7 +85,7 @@ public class MongoDatabaseUtils {
 
 	/**
 	 * Obtain the {@link MongoDatabase database} with given name form the given {@link MongoDatabaseFactory factory}.
-	 * <br />
+	 * <p />
 	 * Registers a {@link MongoSessionSynchronization MongoDB specific transaction synchronization} within the current
 	 * {@link Thread} if {@link TransactionSynchronizationManager#isSynchronizationActive() synchronization is active}.
 	 *
@@ -102,7 +102,7 @@ public class MongoDatabaseUtils {
 	private static MongoDatabase doGetMongoDatabase(@Nullable String dbName, MongoDatabaseFactory factory,
 			SessionSynchronization sessionSynchronization) {
 
-		Assert.notNull(factory, "Factory must not be null");
+		Assert.notNull(factory, "Factory must not be null!");
 
 		if (sessionSynchronization == SessionSynchronization.NEVER
 				|| !TransactionSynchronizationManager.isSynchronizationActive()) {
@@ -193,11 +193,19 @@ public class MongoDatabaseUtils {
 			this.resourceHolder = resourceHolder;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.transaction.support.ResourceHolderSynchronization#shouldReleaseBeforeCompletion()
+		 */
 		@Override
 		protected boolean shouldReleaseBeforeCompletion() {
 			return false;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.transaction.support.ResourceHolderSynchronization#processResourceAfterCommit(java.lang.Object)
+		 */
 		@Override
 		protected void processResourceAfterCommit(MongoResourceHolder resourceHolder) {
 
@@ -206,6 +214,10 @@ public class MongoDatabaseUtils {
 			}
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.transaction.support.ResourceHolderSynchronization#afterCompletion(int)
+		 */
 		@Override
 		public void afterCompletion(int status) {
 
@@ -216,6 +228,10 @@ public class MongoDatabaseUtils {
 			super.afterCompletion(status);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.transaction.support.ResourceHolderSynchronization#releaseResource(java.lang.Object, java.lang.Object)
+		 */
 		@Override
 		protected void releaseResource(MongoResourceHolder resourceHolder, Object resourceKey) {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDbFactory.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2011-2021 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.
+ * 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.data.mongodb;
+
+import org.springframework.dao.DataAccessException;
+
+import com.mongodb.client.MongoDatabase;
+
+/**
+ * Interface for factories creating {@link MongoDatabase} instances.
+ *
+ * @author Mark Pollack
+ * @author Thomas Darimont
+ * @author Christoph Strobl
+ * @deprecated since 3.0, use {@link MongoDatabaseFactory} instead.
+ */
+@Deprecated
+public interface MongoDbFactory extends MongoDatabaseFactory {
+
+	/**
+	 * Creates a default {@link MongoDatabase} instance.
+	 *
+	 * @return never {@literal null}.
+	 * @throws DataAccessException
+	 * @deprecated since 3.0. Use {@link #getMongoDatabase()} instead.
+	 */
+	@Deprecated
+	default MongoDatabase getDb() throws DataAccessException {
+		return getMongoDatabase();
+	}
+
+	/**
+	 * Obtain a {@link MongoDatabase} instance to access the database with the given name.
+	 *
+	 * @param dbName must not be {@literal null} or empty.
+	 * @return never {@literal null}.
+	 * @throws DataAccessException
+	 * @deprecated since 3.0. Use {@link #getMongoDatabase(String)} instead.
+	 */
+	@Deprecated
+	default MongoDatabase getDb(String dbName) throws DataAccessException {
+		return getMongoDatabase(dbName);
+	}
+}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoExpression.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2021-2023 the original author or authors.
+ * Copyright 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.
@@ -18,7 +18,7 @@ package org.springframework.data.mongodb;
 /**
  * Wrapper object for MongoDB expressions like {@code $toUpper : $name} that manifest as {@link org.bson.Document} when
  * passed on to the driver.
- * <br />
+ * <p />
  * A set of predefined {@link MongoExpression expressions}, including a
  * {@link org.springframework.data.mongodb.core.aggregation.AggregationSpELExpression SpEL based variant} for method
  * like expressions (eg. {@code toUpper(name)}) are available via the

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoManagedTypes.java

@@ -1,81 +0,0 @@
-/*
- * Copyright 2022-2023 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.data.mongodb;
-
-import java.util.Arrays;
-import java.util.function.Consumer;
-
-import org.springframework.data.domain.ManagedTypes;
-
-/**
- * @author Christoph Strobl
- * @since 4.0
- */
-public final class MongoManagedTypes implements ManagedTypes {
-
-	private final ManagedTypes delegate;
-
-	private MongoManagedTypes(ManagedTypes types) {
-		this.delegate = types;
-	}
-
-	/**
-	 * Wraps an existing {@link ManagedTypes} object with {@link MongoManagedTypes}.
-	 *
-	 * @param managedTypes
-	 * @return
-	 */
-	public static MongoManagedTypes from(ManagedTypes managedTypes) {
-		return new MongoManagedTypes(managedTypes);
-	}
-
-	/**
-	 * Factory method used to construct {@link MongoManagedTypes} from the given array of {@link Class types}.
-	 *
-	 * @param types array of {@link Class types} used to initialize the {@link ManagedTypes}; must not be {@literal null}.
-	 * @return new instance of {@link MongoManagedTypes} initialized from {@link Class types}.
-	 */
-	public static MongoManagedTypes from(Class<?>... types) {
-		return fromIterable(Arrays.asList(types));
-	}
-
-	/**
-	 * Factory method used to construct {@link MongoManagedTypes} from the given, required {@link Iterable} of
-	 * {@link Class types}.
-	 *
-	 * @param types {@link Iterable} of {@link Class types} used to initialize the {@link ManagedTypes}; must not be
-	 *          {@literal null}.
-	 * @return new instance of {@link MongoManagedTypes} initialized the given, required {@link Iterable} of {@link Class
-	 *         types}.
-	 */
-	public static MongoManagedTypes fromIterable(Iterable<? extends Class<?>> types) {
-		return from(ManagedTypes.fromIterable(types));
-	}
-
-	/**
-	 * Factory method to return an empty {@link MongoManagedTypes} object.
-	 *
-	 * @return an empty {@link MongoManagedTypes} object.
-	 */
-	public static MongoManagedTypes empty() {
-		return from(ManagedTypes.empty());
-	}
-
-	@Override
-	public void forEach(Consumer<Class<?>> action) {
-		delegate.forEach(action);
-	}
-}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoResourceHolder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -24,7 +24,7 @@ import com.mongodb.client.ClientSession;
 /**
  * MongoDB specific {@link ResourceHolderSupport resource holder}, wrapping a {@link ClientSession}.
  * {@link MongoTransactionManager} binds instances of this class to the thread.
- * <br />
+ * <p />
  * <strong>Note:</strong> Intended for internal usage only.
  *
  * @author Christoph Strobl
@@ -68,7 +68,7 @@ class MongoResourceHolder extends ResourceHolderSupport {
 		ClientSession session = getSession();
 
 		if (session == null) {
-			throw new IllegalStateException("No session available");
+			throw new IllegalStateException("No session available!");
 		}
 
 		return session;

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoSessionProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoTransactionException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoTransactionManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -37,18 +37,18 @@ import com.mongodb.client.ClientSession;
 /**
  * A {@link org.springframework.transaction.PlatformTransactionManager} implementation that manages
  * {@link ClientSession} based transactions for a single {@link MongoDatabaseFactory}.
- * <br />
+ * <p />
  * Binds a {@link ClientSession} from the specified {@link MongoDatabaseFactory} to the thread.
- * <br />
+ * <p />
  * {@link TransactionDefinition#isReadOnly() Readonly} transactions operate on a {@link ClientSession} and enable causal
  * consistency, and also {@link ClientSession#startTransaction() start}, {@link ClientSession#commitTransaction()
  * commit} or {@link ClientSession#abortTransaction() abort} a transaction.
- * <br />
+ * <p />
  * Application code is required to retrieve the {@link com.mongodb.client.MongoDatabase} via
  * {@link MongoDatabaseUtils#getDatabase(MongoDatabaseFactory)} instead of a standard
  * {@link MongoDatabaseFactory#getMongoDatabase()} call. Spring classes such as
  * {@link org.springframework.data.mongodb.core.MongoTemplate} use this strategy implicitly.
- * <br />
+ * <p />
  * By default failure of a {@literal commit} operation raises a {@link TransactionSystemException}. One may override
  * {@link #doCommit(MongoTransactionObject)} to implement the
  * <a href="https://docs.mongodb.com/manual/core/transactions/#retry-commit-operation">Retry Commit Operation</a>
@@ -69,11 +69,11 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 
 	/**
 	 * Create a new {@link MongoTransactionManager} for bean-style usage.
-	 * <br />
+	 * <p />
 	 * <strong>Note:</strong>The {@link MongoDatabaseFactory db factory} has to be
 	 * {@link #setDbFactory(MongoDatabaseFactory) set} before using the instance. Use this constructor to prepare a
 	 * {@link MongoTransactionManager} via a {@link org.springframework.beans.factory.BeanFactory}.
-	 * <br />
+	 * <p />
 	 * Optionally it is possible to set default {@link TransactionOptions transaction options} defining
 	 * {@link com.mongodb.ReadConcern} and {@link com.mongodb.WriteConcern}.
 	 *
@@ -100,12 +100,16 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 	 */
 	public MongoTransactionManager(MongoDatabaseFactory dbFactory, @Nullable TransactionOptions options) {
 
-		Assert.notNull(dbFactory, "DbFactory must not be null");
+		Assert.notNull(dbFactory, "DbFactory must not be null!");
 
 		this.dbFactory = dbFactory;
 		this.options = options;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * org.springframework.transaction.support.AbstractPlatformTransactionManager#doGetTransaction()
+	 */
 	@Override
 	protected Object doGetTransaction() throws TransactionException {
 
@@ -114,11 +118,19 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 		return new MongoTransactionObject(resourceHolder);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * org.springframework.transaction.support.AbstractPlatformTransactionManager#isExistingTransaction(java.lang.Object)
+	 */
 	@Override
 	protected boolean isExistingTransaction(Object transaction) throws TransactionException {
 		return extractMongoTransaction(transaction).hasResourceHolder();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * org.springframework.transaction.support.AbstractPlatformTransactionManager#doBegin(java.lang.Object, org.springframework.transaction.TransactionDefinition)
+	 */
 	@Override
 	protected void doBegin(Object transaction, TransactionDefinition definition) throws TransactionException {
 
@@ -148,6 +160,10 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 		TransactionSynchronizationManager.bindResource(getRequiredDbFactory(), resourceHolder);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * org.springframework.transaction.support.AbstractPlatformTransactionManager#doSuspend(java.lang.Object)
+	 */
 	@Override
 	protected Object doSuspend(Object transaction) throws TransactionException {
 
@@ -157,11 +173,19 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 		return TransactionSynchronizationManager.unbindResource(getRequiredDbFactory());
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * org.springframework.transaction.support.AbstractPlatformTransactionManager#doResume(java.lang.Object, java.lang.Object)
+	 */
 	@Override
 	protected void doResume(@Nullable Object transaction, Object suspendedResources) {
 		TransactionSynchronizationManager.bindResource(getRequiredDbFactory(), suspendedResources);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * org.springframework.transaction.support.AbstractPlatformTransactionManager#doCommit(org.springframework.transaction.support.DefaultTransactionStatus)
+	 */
 	@Override
 	protected final void doCommit(DefaultTransactionStatus status) throws TransactionException {
 
@@ -188,8 +212,8 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 	 * By default those labels are ignored, nevertheless one might check for
 	 * {@link MongoException#UNKNOWN_TRANSACTION_COMMIT_RESULT_LABEL transient commit errors labels} and retry the the
 	 * commit. <br />
-	 * <pre>
 	 * <code>
+	 *     <pre>
 	 * int retries = 3;
 	 * do {
 	 *     try {
@@ -202,8 +226,8 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 	 *     }
 	 *     Thread.sleep(500);
 	 * } while (--retries > 0);
+	 *     </pre>
 	 * </code>
-	 * </pre>
 	 *
 	 * @param transactionObject never {@literal null}.
 	 * @throws Exception in case of transaction errors.
@@ -212,6 +236,10 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 		transactionObject.commitTransaction();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * org.springframework.transaction.support.AbstractPlatformTransactionManager#doRollback(org.springframework.transaction.support.DefaultTransactionStatus)
+	 */
 	@Override
 	protected void doRollback(DefaultTransactionStatus status) throws TransactionException {
 
@@ -231,6 +259,10 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 		}
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * org.springframework.transaction.support.AbstractPlatformTransactionManager#doSetRollbackOnly(org.springframework.transaction.support.DefaultTransactionStatus)
+	 */
 	@Override
 	protected void doSetRollbackOnly(DefaultTransactionStatus status) throws TransactionException {
 
@@ -238,6 +270,10 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 		transactionObject.getRequiredResourceHolder().setRollbackOnly();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * org.springframework.transaction.support.AbstractPlatformTransactionManager#doCleanupAfterCompletion(java.lang.Object)
+	 */
 	@Override
 	protected void doCleanupAfterCompletion(Object transaction) {
 
@@ -266,7 +302,7 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 	 */
 	public void setDbFactory(MongoDatabaseFactory dbFactory) {
 
-		Assert.notNull(dbFactory, "DbFactory must not be null");
+		Assert.notNull(dbFactory, "DbFactory must not be null!");
 		this.dbFactory = dbFactory;
 	}
 
@@ -289,11 +325,19 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 		return dbFactory;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.transaction.support.ResourceTransactionManager#getResourceFactory()
+	 */
 	@Override
 	public MongoDatabaseFactory getResourceFactory() {
 		return getRequiredDbFactory();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
+	 */
 	@Override
 	public void afterPropertiesSet() {
 		getRequiredDbFactory();
@@ -315,7 +359,7 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 	private MongoDatabaseFactory getRequiredDbFactory() {
 
 		Assert.state(dbFactory != null,
-				"MongoTransactionManager operates upon a MongoDbFactory; Did you forget to provide one; It's required");
+				"MongoTransactionManager operates upon a MongoDbFactory. Did you forget to provide one? It's required.");
 
 		return dbFactory;
 	}
@@ -353,7 +397,7 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 				debugString += String.format("causallyConsistent = %s, ", session.isCausallyConsistent());
 				debugString += String.format("txActive = %s, ", session.hasActiveTransaction());
 				debugString += String.format("txNumber = %d, ", session.getServerSession().getTransactionNumber());
-				debugString += String.format("closed = %b, ", session.getServerSession().isClosed());
+				debugString += String.format("closed = %d, ", session.getServerSession().isClosed());
 				debugString += String.format("clusterTime = %s", session.getClusterTime());
 			} else {
 				debugString += "id = n/a";
@@ -450,22 +494,30 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 
 		private MongoResourceHolder getRequiredResourceHolder() {
 
-			Assert.state(resourceHolder != null, "MongoResourceHolder is required but not present; o_O");
+			Assert.state(resourceHolder != null, "MongoResourceHolder is required but not present. o_O");
 			return resourceHolder;
 		}
 
 		private ClientSession getRequiredSession() {
 
 			ClientSession session = getSession();
-			Assert.state(session != null, "A Session is required but it turned out to be null");
+			Assert.state(session != null, "A Session is required but it turned out to be null.");
 			return session;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see  org.springframework.transaction.support.SmartTransactionObject#isRollbackOnly()
+		 */
 		@Override
 		public boolean isRollbackOnly() {
 			return this.resourceHolder != null && this.resourceHolder.isRollbackOnly();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see  org.springframework.transaction.support.SmartTransactionObject#flush()
+		 */
 		@Override
 		public void flush() {
 			TransactionSynchronizationUtils.triggerFlush();

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoDatabaseFactory.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2023 the original author or authors.
+ * Copyright 2016-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoDatabaseUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019-2023 the original author or authors.
+ * Copyright 2019-2021 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.
@@ -36,7 +36,7 @@ import com.mongodb.reactivestreams.client.MongoDatabase;
  * Helper class for managing reactive {@link MongoDatabase} instances via {@link ReactiveMongoDatabaseFactory}. Used for
  * obtaining {@link ClientSession session bound} resources, such as {@link MongoDatabase} and {@link MongoCollection}
  * suitable for transactional usage.
- * <br />
+ * <p />
  * <strong>Note:</strong> Intended for internal usage only.
  *
  * @author Mark Paluch
@@ -75,7 +75,7 @@ public class ReactiveMongoDatabaseUtils {
 	/**
 	 * Obtain the default {@link MongoDatabase database} form the given {@link ReactiveMongoDatabaseFactory factory} using
 	 * {@link SessionSynchronization#ON_ACTUAL_TRANSACTION native session synchronization}.
-	 * <br />
+	 * <p />
 	 * Registers a {@link MongoSessionSynchronization MongoDB specific transaction synchronization} within the subscriber
 	 * {@link Context} if {@link TransactionSynchronizationManager#isSynchronizationActive() synchronization is active}.
 	 *
@@ -88,7 +88,7 @@ public class ReactiveMongoDatabaseUtils {
 
 	/**
 	 * Obtain the default {@link MongoDatabase database} form the given {@link ReactiveMongoDatabaseFactory factory}.
-	 * <br />
+	 * <p />
 	 * Registers a {@link MongoSessionSynchronization MongoDB specific transaction synchronization} within the subscriber
 	 * {@link Context} if {@link TransactionSynchronizationManager#isSynchronizationActive() synchronization is active}.
 	 *
@@ -104,7 +104,7 @@ public class ReactiveMongoDatabaseUtils {
 	/**
 	 * Obtain the {@link MongoDatabase database} with given name form the given {@link ReactiveMongoDatabaseFactory
 	 * factory} using {@link SessionSynchronization#ON_ACTUAL_TRANSACTION native session synchronization}.
-	 * <br />
+	 * <p />
 	 * Registers a {@link MongoSessionSynchronization MongoDB specific transaction synchronization} within the subscriber
 	 * {@link Context} if {@link TransactionSynchronizationManager#isSynchronizationActive() synchronization is active}.
 	 *
@@ -119,7 +119,7 @@ public class ReactiveMongoDatabaseUtils {
 	/**
 	 * Obtain the {@link MongoDatabase database} with given name form the given {@link ReactiveMongoDatabaseFactory
 	 * factory}.
-	 * <br />
+	 * <p />
 	 * Registers a {@link MongoSessionSynchronization MongoDB specific transaction synchronization} within the subscriber
 	 * {@link Context} if {@link TransactionSynchronizationManager#isSynchronizationActive() synchronization is active}.
 	 *
@@ -136,7 +136,7 @@ public class ReactiveMongoDatabaseUtils {
 	private static Mono<MongoDatabase> doGetMongoDatabase(@Nullable String dbName, ReactiveMongoDatabaseFactory factory,
 			SessionSynchronization sessionSynchronization) {
 
-		Assert.notNull(factory, "DatabaseFactory must not be null");
+		Assert.notNull(factory, "DatabaseFactory must not be null!");
 
 		if (sessionSynchronization == SessionSynchronization.NEVER) {
 			return getMongoDatabaseOrDefault(dbName, factory);
@@ -214,11 +214,19 @@ public class ReactiveMongoDatabaseUtils {
 			this.resourceHolder = resourceHolder;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.transaction.reactive.ReactiveResourceSynchronization#shouldReleaseBeforeCompletion()
+		 */
 		@Override
 		protected boolean shouldReleaseBeforeCompletion() {
 			return false;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.transaction.reactive.ReactiveResourceSynchronization#processResourceAfterCommit(java.lang.Object)
+		 */
 		@Override
 		protected Mono<Void> processResourceAfterCommit(ReactiveMongoResourceHolder resourceHolder) {
 
@@ -229,6 +237,10 @@ public class ReactiveMongoDatabaseUtils {
 			return Mono.empty();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.transaction.reactive.ReactiveResourceSynchronization#afterCompletion(int)
+		 */
 		@Override
 		public Mono<Void> afterCompletion(int status) {
 
@@ -244,6 +256,10 @@ public class ReactiveMongoDatabaseUtils {
 			});
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.transaction.reactive.ReactiveResourceSynchronization#releaseResource(java.lang.Object, java.lang.Object)
+		 */
 		@Override
 		protected Mono<Void> releaseResource(ReactiveMongoResourceHolder resourceHolder, Object resourceKey) {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoResourceHolder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019-2023 the original author or authors.
+ * Copyright 2019-2021 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.
@@ -24,7 +24,7 @@ import com.mongodb.reactivestreams.client.ClientSession;
 /**
  * MongoDB specific resource holder, wrapping a {@link ClientSession}. {@link ReactiveMongoTransactionManager} binds
  * instances of this class to the subscriber context.
- * <br />
+ * <p />
  * <strong>Note:</strong> Intended for internal usage only.
  *
  * @author Mark Paluch

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoTransactionManager.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019-2023 the original author or authors.
+ * Copyright 2019-2021 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.
@@ -38,21 +38,21 @@ import com.mongodb.reactivestreams.client.ClientSession;
  * A {@link org.springframework.transaction.ReactiveTransactionManager} implementation that manages
  * {@link com.mongodb.reactivestreams.client.ClientSession} based transactions for a single
  * {@link org.springframework.data.mongodb.ReactiveMongoDatabaseFactory}.
- * <br />
+ * <p />
  * Binds a {@link ClientSession} from the specified
  * {@link org.springframework.data.mongodb.ReactiveMongoDatabaseFactory} to the subscriber
  * {@link reactor.util.context.Context}.
- * <br />
+ * <p />
  * {@link org.springframework.transaction.TransactionDefinition#isReadOnly() Readonly} transactions operate on a
  * {@link ClientSession} and enable causal consistency, and also {@link ClientSession#startTransaction() start},
  * {@link com.mongodb.reactivestreams.client.ClientSession#commitTransaction() commit} or
  * {@link ClientSession#abortTransaction() abort} a transaction.
- * <br />
+ * <p />
  * Application code is required to retrieve the {@link com.mongodb.reactivestreams.client.MongoDatabase} via
  * {@link org.springframework.data.mongodb.ReactiveMongoDatabaseUtils#getDatabase(ReactiveMongoDatabaseFactory)} instead
  * of a standard {@link org.springframework.data.mongodb.ReactiveMongoDatabaseFactory#getMongoDatabase()} call. Spring
  * classes such as {@link org.springframework.data.mongodb.core.ReactiveMongoTemplate} use this strategy implicitly.
- * <br />
+ * <p />
  * By default failure of a {@literal commit} operation raises a {@link TransactionSystemException}. You can override
  * {@link #doCommit(TransactionSynchronizationManager, ReactiveMongoTransactionObject)} to implement the
  * <a href="https://docs.mongodb.com/manual/core/transactions/#retry-commit-operation">Retry Commit Operation</a>
@@ -71,11 +71,11 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 
 	/**
 	 * Create a new {@link ReactiveMongoTransactionManager} for bean-style usage.
-	 * <br />
+	 * <p />
 	 * <strong>Note:</strong>The {@link org.springframework.data.mongodb.ReactiveMongoDatabaseFactory db factory} has to
 	 * be {@link #setDatabaseFactory(ReactiveMongoDatabaseFactory)} set} before using the instance. Use this constructor
 	 * to prepare a {@link ReactiveMongoTransactionManager} via a {@link org.springframework.beans.factory.BeanFactory}.
-	 * <br />
+	 * <p />
 	 * Optionally it is possible to set default {@link TransactionOptions transaction options} defining
 	 * {@link com.mongodb.ReadConcern} and {@link com.mongodb.WriteConcern}.
 	 *
@@ -104,12 +104,16 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 	public ReactiveMongoTransactionManager(ReactiveMongoDatabaseFactory databaseFactory,
 			@Nullable TransactionOptions options) {
 
-		Assert.notNull(databaseFactory, "DatabaseFactory must not be null");
+		Assert.notNull(databaseFactory, "DatabaseFactory must not be null!");
 
 		this.databaseFactory = databaseFactory;
 		this.options = options;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doGetTransaction(org.springframework.transaction.reactive.TransactionSynchronizationManager)
+	 */
 	@Override
 	protected Object doGetTransaction(TransactionSynchronizationManager synchronizationManager)
 			throws TransactionException {
@@ -119,11 +123,19 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		return new ReactiveMongoTransactionObject(resourceHolder);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#isExistingTransaction(java.lang.Object)
+	 */
 	@Override
 	protected boolean isExistingTransaction(Object transaction) throws TransactionException {
 		return extractMongoTransaction(transaction).hasResourceHolder();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doBegin(org.springframework.transaction.reactive.TransactionSynchronizationManager, java.lang.Object, org.springframework.transaction.TransactionDefinition)
+	 */
 	@Override
 	protected Mono<Void> doBegin(TransactionSynchronizationManager synchronizationManager, Object transaction,
 			TransactionDefinition definition) throws TransactionException {
@@ -163,6 +175,10 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		});
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doSuspend(org.springframework.transaction.reactive.TransactionSynchronizationManager, java.lang.Object)
+	 */
 	@Override
 	protected Mono<Object> doSuspend(TransactionSynchronizationManager synchronizationManager, Object transaction)
 			throws TransactionException {
@@ -176,6 +192,10 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		});
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doResume(org.springframework.transaction.reactive.TransactionSynchronizationManager, java.lang.Object, java.lang.Object)
+	 */
 	@Override
 	protected Mono<Void> doResume(TransactionSynchronizationManager synchronizationManager, @Nullable Object transaction,
 			Object suspendedResources) {
@@ -183,6 +203,10 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 				.fromRunnable(() -> synchronizationManager.bindResource(getRequiredDatabaseFactory(), suspendedResources));
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doCommit(org.springframework.transaction.reactive.TransactionSynchronizationManager, org.springframework.transaction.reactive.GenericReactiveTransaction)
+	 */
 	@Override
 	protected final Mono<Void> doCommit(TransactionSynchronizationManager synchronizationManager,
 			GenericReactiveTransaction status) throws TransactionException {
@@ -219,6 +243,10 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		return transactionObject.commitTransaction();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doRollback(org.springframework.transaction.reactive.TransactionSynchronizationManager, org.springframework.transaction.reactive.GenericReactiveTransaction)
+	 */
 	@Override
 	protected Mono<Void> doRollback(TransactionSynchronizationManager synchronizationManager,
 			GenericReactiveTransaction status) {
@@ -240,6 +268,10 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		});
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doSetRollbackOnly(org.springframework.transaction.reactive.TransactionSynchronizationManager, org.springframework.transaction.reactive.GenericReactiveTransaction)
+	 */
 	@Override
 	protected Mono<Void> doSetRollbackOnly(TransactionSynchronizationManager synchronizationManager,
 			GenericReactiveTransaction status) throws TransactionException {
@@ -250,6 +282,10 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		});
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doCleanupAfterCompletion(org.springframework.transaction.reactive.TransactionSynchronizationManager, java.lang.Object)
+	 */
 	@Override
 	protected Mono<Void> doCleanupAfterCompletion(TransactionSynchronizationManager synchronizationManager,
 			Object transaction) {
@@ -281,7 +317,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 	 */
 	public void setDatabaseFactory(ReactiveMongoDatabaseFactory databaseFactory) {
 
-		Assert.notNull(databaseFactory, "DatabaseFactory must not be null");
+		Assert.notNull(databaseFactory, "DatabaseFactory must not be null!");
 		this.databaseFactory = databaseFactory;
 	}
 
@@ -304,6 +340,10 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		return databaseFactory;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
+	 */
 	@Override
 	public void afterPropertiesSet() {
 		getRequiredDatabaseFactory();
@@ -323,7 +363,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 	private ReactiveMongoDatabaseFactory getRequiredDatabaseFactory() {
 
 		Assert.state(databaseFactory != null,
-				"ReactiveMongoTransactionManager operates upon a ReactiveMongoDatabaseFactory; Did you forget to provide one; It's required");
+				"ReactiveMongoTransactionManager operates upon a ReactiveMongoDatabaseFactory. Did you forget to provide one? It's required.");
 
 		return databaseFactory;
 	}
@@ -361,7 +401,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 				debugString += String.format("causallyConsistent = %s, ", session.isCausallyConsistent());
 				debugString += String.format("txActive = %s, ", session.hasActiveTransaction());
 				debugString += String.format("txNumber = %d, ", session.getServerSession().getTransactionNumber());
-				debugString += String.format("closed = %b, ", session.getServerSession().isClosed());
+				debugString += String.format("closed = %d, ", session.getServerSession().isClosed());
 				debugString += String.format("clusterTime = %s", session.getClusterTime());
 			} else {
 				debugString += "id = n/a";
@@ -458,22 +498,30 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 
 		private ReactiveMongoResourceHolder getRequiredResourceHolder() {
 
-			Assert.state(resourceHolder != null, "ReactiveMongoResourceHolder is required but not present; o_O");
+			Assert.state(resourceHolder != null, "ReactiveMongoResourceHolder is required but not present. o_O");
 			return resourceHolder;
 		}
 
 		private ClientSession getRequiredSession() {
 
 			ClientSession session = getSession();
-			Assert.state(session != null, "A Session is required but it turned out to be null");
+			Assert.state(session != null, "A Session is required but it turned out to be null.");
 			return session;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.transaction.support.SmartTransactionObject#isRollbackOnly()
+		 */
 		@Override
 		public boolean isRollbackOnly() {
 			return this.resourceHolder != null && this.resourceHolder.isRollbackOnly();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.transaction.support.SmartTransactionObject#flush()
+		 */
 		@Override
 		public void flush() {
 			throw new UnsupportedOperationException("flush() not supported");

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/SessionAwareMethodInterceptor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -35,7 +35,7 @@ import com.mongodb.session.ClientSession;
 /**
  * {@link MethodInterceptor} implementation looking up and invoking an alternative target method having
  * {@link ClientSession} as its first argument. This allows seamless integration with the existing code base.
- * <br />
+ * <p />
  * The {@link MethodInterceptor} is aware of methods on {@code MongoCollection} that my return new instances of itself
  * like (eg. {@link com.mongodb.reactivestreams.client.MongoCollection#withWriteConcern(WriteConcern)} and decorate them
  * if not already proxied.
@@ -76,13 +76,13 @@ public class SessionAwareMethodInterceptor<D, C> implements MethodInterceptor {
 			Class<D> databaseType, ClientSessionOperator<D> databaseDecorator, Class<C> collectionType,
 			ClientSessionOperator<C> collectionDecorator) {
 
-		Assert.notNull(session, "ClientSession must not be null");
-		Assert.notNull(target, "Target must not be null");
-		Assert.notNull(sessionType, "SessionType must not be null");
-		Assert.notNull(databaseType, "Database type must not be null");
-		Assert.notNull(databaseDecorator, "Database ClientSessionOperator must not be null");
-		Assert.notNull(collectionType, "Collection type must not be null");
-		Assert.notNull(collectionDecorator, "Collection ClientSessionOperator must not be null");
+		Assert.notNull(session, "ClientSession must not be null!");
+		Assert.notNull(target, "Target must not be null!");
+		Assert.notNull(sessionType, "SessionType must not be null!");
+		Assert.notNull(databaseType, "Database type must not be null!");
+		Assert.notNull(databaseDecorator, "Database ClientSessionOperator must not be null!");
+		Assert.notNull(collectionType, "Collection type must not be null!");
+		Assert.notNull(collectionDecorator, "Collection ClientSessionOperator must not be null!");
 
 		this.session = session;
 		this.target = target;
@@ -95,6 +95,10 @@ public class SessionAwareMethodInterceptor<D, C> implements MethodInterceptor {
 		this.sessionType = sessionType;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.aopalliance.intercept.MethodInterceptor(org.aopalliance.intercept.MethodInvocation)
+	 */
 	@Nullable
 	@Override
 	public Object invoke(MethodInvocation methodInvocation) throws Throwable {

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/SessionSynchronization.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/SpringDataMongoDB.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2023 the original author or authors.
+ * Copyright 2020-2021 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.
@@ -15,8 +15,8 @@
  */
 package org.springframework.data.mongodb;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.data.util.Version;
 import org.springframework.util.StringUtils;
 
@@ -31,7 +31,7 @@ import com.mongodb.MongoDriverInformation;
  */
 public class SpringDataMongoDB {
 
-	private static final Log LOGGER = LogFactory.getLog(SpringDataMongoDB.class);
+	private static final Logger LOGGER = LoggerFactory.getLogger(SpringDataMongoDB.class);
 
 	private static final Version FALLBACK_VERSION = new Version(3);
 	private static final MongoDriverInformation DRIVER_INFORMATION = MongoDriverInformation
@@ -48,7 +48,7 @@ public class SpringDataMongoDB {
 
 	/**
 	 * Fetches the "Implementation-Version" manifest attribute from the jar file.
-	 * <br />
+	 * <p />
 	 * Note that some ClassLoaders do not expose the package metadata, hence this class might not be able to determine the
 	 * version in all environments. In this case the current Major version is returned as a fallback.
 	 *
@@ -68,7 +68,7 @@ public class SpringDataMongoDB {
 		try {
 			return Version.parse(versionString);
 		} catch (Exception e) {
-			LOGGER.debug(String.format("Cannot read Spring Data MongoDB version '%s'.", versionString));
+			LOGGER.debug("Cannot read Spring Data MongoDB version '{}'.", versionString);
 		}
 
 		return FALLBACK_VERSION;

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/UncategorizedMongoDbException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2023 the original author or authors.
+ * Copyright 2010-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/aot/LazyLoadingProxyAotProcessor.java

@@ -1,107 +0,0 @@
-/*
- * Copyright 2022-2023 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.data.mongodb.aot;
-
-import java.lang.annotation.Annotation;
-import java.lang.reflect.Field;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Set;
-
-import org.springframework.aot.generate.GenerationContext;
-import org.springframework.aot.hint.MemberCategory;
-import org.springframework.aot.hint.TypeReference;
-import org.springframework.core.annotation.AnnotatedElementUtils;
-import org.springframework.core.annotation.MergedAnnotations;
-import org.springframework.data.annotation.Reference;
-import org.springframework.data.mongodb.core.convert.LazyLoadingProxyFactory;
-import org.springframework.data.mongodb.core.convert.LazyLoadingProxyFactory.LazyLoadingInterceptor;
-import org.springframework.data.mongodb.core.mapping.DBRef;
-import org.springframework.data.mongodb.core.mapping.DocumentReference;
-
-/**
- * @author Christoph Strobl
- * @since 4.0
- */
-public class LazyLoadingProxyAotProcessor {
-
-	private boolean generalLazyLoadingProxyContributed = false;
-
-	public void registerLazyLoadingProxyIfNeeded(Class<?> type, GenerationContext generationContext) {
-
-		Set<Field> refFields = getFieldsWithAnnotationPresent(type, Reference.class);
-		if (refFields.isEmpty()) {
-			return;
-		}
-
-		refFields.stream() //
-				.filter(LazyLoadingProxyAotProcessor::isLazyLoading) //
-				.forEach(field -> {
-
-					if (!generalLazyLoadingProxyContributed) {
-						generationContext.getRuntimeHints().proxies().registerJdkProxy(
-								TypeReference.of(org.springframework.data.mongodb.core.convert.LazyLoadingProxy.class),
-								TypeReference.of(org.springframework.aop.SpringProxy.class),
-								TypeReference.of(org.springframework.aop.framework.Advised.class),
-								TypeReference.of(org.springframework.core.DecoratingProxy.class));
-						generalLazyLoadingProxyContributed = true;
-					}
-
-					if (field.getType().isInterface()) {
-
-						List<Class<?>> interfaces = new ArrayList<>(
-								Arrays.asList(LazyLoadingProxyFactory.prepareFactory(field.getType()).getProxiedInterfaces()));
-						interfaces.add(org.springframework.aop.SpringProxy.class);
-						interfaces.add(org.springframework.aop.framework.Advised.class);
-						interfaces.add(org.springframework.core.DecoratingProxy.class);
-
-						generationContext.getRuntimeHints().proxies().registerJdkProxy(interfaces.toArray(Class[]::new));
-					} else {
-
-						Class<?> proxyClass = LazyLoadingProxyFactory.resolveProxyType(field.getType(),
-								LazyLoadingInterceptor::none);
-
-						// see: spring-projects/spring-framework/issues/29309
-						generationContext.getRuntimeHints().reflection().registerType(proxyClass,
-								MemberCategory.INVOKE_DECLARED_CONSTRUCTORS, MemberCategory.INVOKE_DECLARED_METHODS, MemberCategory.DECLARED_FIELDS);
-					}
-				});
-	}
-
-	private static boolean isLazyLoading(Field field) {
-		if (AnnotatedElementUtils.isAnnotated(field, DBRef.class)) {
-			return AnnotatedElementUtils.findMergedAnnotation(field, DBRef.class).lazy();
-		}
-		if (AnnotatedElementUtils.isAnnotated(field, DocumentReference.class)) {
-			return AnnotatedElementUtils.findMergedAnnotation(field, DocumentReference.class).lazy();
-		}
-		return false;
-	}
-
-	private static Set<Field> getFieldsWithAnnotationPresent(Class<?> type, Class<? extends Annotation> annotation) {
-
-		Set<Field> fields = new LinkedHashSet<>();
-		for (Field field : type.getDeclaredFields()) {
-			if (MergedAnnotations.from(field).get(annotation).isPresent()) {
-				fields.add(field);
-			}
-		}
-		return fields;
-	}
-
-}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/aot/MongoAotPredicates.java

@@ -1,45 +0,0 @@
-/*
- * Copyright 2022-2023 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.data.mongodb.aot;
-
-import java.util.function.Predicate;
-
-import org.springframework.data.mongodb.core.mapping.MongoSimpleTypes;
-import org.springframework.data.util.ReactiveWrappers;
-import org.springframework.data.util.ReactiveWrappers.ReactiveLibrary;
-import org.springframework.data.util.TypeUtils;
-import org.springframework.lang.Nullable;
-import org.springframework.util.ClassUtils;
-
-/**
- * @author Christoph Strobl
- * @since 4.0
- */
-public class MongoAotPredicates {
-
-	public static final Predicate<Class<?>> IS_SIMPLE_TYPE = (type) ->  MongoSimpleTypes.HOLDER.isSimpleType(type) || TypeUtils.type(type).isPartOf("org.bson");
-	public static final Predicate<ReactiveLibrary> IS_REACTIVE_LIBARARY_AVAILABLE = (lib) -> ReactiveWrappers.isAvailable(lib);
-	public static final Predicate<ClassLoader> IS_SYNC_CLIENT_PRESENT = (classLoader) -> ClassUtils.isPresent("com.mongodb.client.MongoClient", classLoader);
-
-	public static boolean isReactorPresent() {
-		return IS_REACTIVE_LIBARARY_AVAILABLE.test(ReactiveWrappers.ReactiveLibrary.PROJECT_REACTOR);
-	}
-
-	public static boolean isSyncClientPresent(@Nullable ClassLoader classLoader) {
-		return IS_SYNC_CLIENT_PRESENT.test(classLoader);
-	}
-
-}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/aot/MongoManagedTypesBeanRegistrationAotProcessor.java

@@ -1,56 +0,0 @@
-/*
- * Copyright 2022-2023 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.data.mongodb.aot;
-
-import org.springframework.aot.generate.GenerationContext;
-import org.springframework.core.ResolvableType;
-import org.springframework.data.aot.ManagedTypesBeanRegistrationAotProcessor;
-import org.springframework.data.mongodb.MongoManagedTypes;
-import org.springframework.lang.Nullable;
-import org.springframework.util.ClassUtils;
-
-/**
- * @author Christoph Strobl
- * @since 2022/06
- */
-class MongoManagedTypesBeanRegistrationAotProcessor extends ManagedTypesBeanRegistrationAotProcessor {
-
-	private final LazyLoadingProxyAotProcessor lazyLoadingProxyAotProcessor = new LazyLoadingProxyAotProcessor();
-
-	public MongoManagedTypesBeanRegistrationAotProcessor() {
-		setModuleIdentifier("mongo");
-	}
-
-	@Override
-	protected boolean isMatch(@Nullable Class<?> beanType, @Nullable String beanName) {
-		return isMongoManagedTypes(beanType) || super.isMatch(beanType, beanName);
-	}
-
-	protected boolean isMongoManagedTypes(@Nullable Class<?> beanType) {
-		return beanType != null && ClassUtils.isAssignable(MongoManagedTypes.class, beanType);
-	}
-
-	@Override
-	protected void contributeType(ResolvableType type, GenerationContext generationContext) {
-
-		if (MongoAotPredicates.IS_SIMPLE_TYPE.test(type.toClass())) {
-			return;
-		}
-
-		super.contributeType(type, generationContext);
-		lazyLoadingProxyAotProcessor.registerLazyLoadingProxyIfNeeded(type.toClass(), generationContext);
-	}
-}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/aot/MongoRuntimeHints.java

@@ -1,83 +0,0 @@
-/*
- * Copyright 2022-2023 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.data.mongodb.aot;
-
-import static org.springframework.data.mongodb.aot.MongoAotPredicates.*;
-
-import java.util.Arrays;
-
-import org.springframework.aot.hint.MemberCategory;
-import org.springframework.aot.hint.RuntimeHints;
-import org.springframework.aot.hint.RuntimeHintsRegistrar;
-import org.springframework.aot.hint.TypeReference;
-import org.springframework.data.mongodb.core.mapping.event.AfterConvertCallback;
-import org.springframework.data.mongodb.core.mapping.event.AfterSaveCallback;
-import org.springframework.data.mongodb.core.mapping.event.BeforeConvertCallback;
-import org.springframework.data.mongodb.core.mapping.event.BeforeSaveCallback;
-import org.springframework.data.mongodb.core.mapping.event.ReactiveAfterConvertCallback;
-import org.springframework.data.mongodb.core.mapping.event.ReactiveAfterSaveCallback;
-import org.springframework.data.mongodb.core.mapping.event.ReactiveBeforeConvertCallback;
-import org.springframework.data.mongodb.core.mapping.event.ReactiveBeforeSaveCallback;
-import org.springframework.lang.Nullable;
-import org.springframework.util.ClassUtils;
-
-/**
- * {@link RuntimeHintsRegistrar} for repository types and entity callbacks.
- *
- * @author Christoph Strobl
- * @author Mark Paluch
- * @since 4.0
- */
-class MongoRuntimeHints implements RuntimeHintsRegistrar {
-
-	@Override
-	public void registerHints(RuntimeHints hints, @Nullable ClassLoader classLoader) {
-
-		hints.reflection().registerTypes(
-				Arrays.asList(TypeReference.of(BeforeConvertCallback.class), TypeReference.of(BeforeSaveCallback.class),
-						TypeReference.of(AfterConvertCallback.class), TypeReference.of(AfterSaveCallback.class)),
-				builder -> builder.withMembers(MemberCategory.INVOKE_DECLARED_CONSTRUCTORS,
-						MemberCategory.INVOKE_PUBLIC_METHODS));
-
-		registerTransactionProxyHints(hints, classLoader);
-
-		if (isReactorPresent()) {
-
-			hints.reflection()
-					.registerTypes(Arrays.asList(TypeReference.of(ReactiveBeforeConvertCallback.class),
-							TypeReference.of(ReactiveBeforeSaveCallback.class), TypeReference.of(ReactiveAfterConvertCallback.class),
-							TypeReference.of(ReactiveAfterSaveCallback.class)),
-							builder -> builder.withMembers(MemberCategory.INVOKE_DECLARED_CONSTRUCTORS,
-									MemberCategory.INVOKE_PUBLIC_METHODS));
-		}
-
-	}
-
-	private static void registerTransactionProxyHints(RuntimeHints hints, @Nullable ClassLoader classLoader) {
-
-		if (MongoAotPredicates.isSyncClientPresent(classLoader)
-				&& ClassUtils.isPresent("org.springframework.aop.SpringProxy", classLoader)) {
-
-			hints.proxies().registerJdkProxy(TypeReference.of("com.mongodb.client.MongoDatabase"),
-					TypeReference.of("org.springframework.aop.SpringProxy"),
-					TypeReference.of("org.springframework.core.DecoratingProxy"));
-			hints.proxies().registerJdkProxy(TypeReference.of("com.mongodb.client.MongoCollection"),
-					TypeReference.of("org.springframework.aop.SpringProxy"),
-					TypeReference.of("org.springframework.core.DecoratingProxy"));
-		}
-	}
-
-}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/AbstractMongoClientConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -25,7 +25,9 @@ import org.springframework.data.mongodb.core.convert.DbRefResolver;
 import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver;
 import org.springframework.data.mongodb.core.convert.MappingMongoConverter;
 import org.springframework.data.mongodb.core.convert.MongoCustomConversions;
+import org.springframework.data.mongodb.core.mapping.Document;
 import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
+import org.springframework.lang.Nullable;
 
 import com.mongodb.MongoClientSettings;
 import com.mongodb.MongoClientSettings.Builder;
@@ -78,12 +80,30 @@ public abstract class AbstractMongoClientConfiguration extends MongoConfiguratio
 		return new SimpleMongoClientDatabaseFactory(mongoClient(), getDatabaseName());
 	}
 
+	/**
+	 * Return the base package to scan for mapped {@link Document}s. Will return the package name of the configuration
+	 * class' (the concrete class, not this one here) by default. So if you have a {@code com.acme.AppConfig} extending
+	 * {@link AbstractMongoClientConfiguration} the base package will be considered {@code com.acme} unless the method is
+	 * overridden to implement alternate behavior.
+	 *
+	 * @return the base package to scan for mapped {@link Document} classes or {@literal null} to not enable scanning for
+	 *         entities.
+	 * @deprecated use {@link #getMappingBasePackages()} instead.
+	 */
+	@Deprecated
+	@Nullable
+	protected String getMappingBasePackage() {
+
+		Package mappingBasePackage = getClass().getPackage();
+		return mappingBasePackage == null ? null : mappingBasePackage.getName();
+	}
+
 	/**
 	 * Creates a {@link MappingMongoConverter} using the configured {@link #mongoDbFactory()} and
-	 * {@link #mongoMappingContext(MongoCustomConversions, org.springframework.data.mongodb.MongoManagedTypes)}. Will get {@link #customConversions()} applied.
+	 * {@link #mongoMappingContext(MongoCustomConversions)}. Will get {@link #customConversions()} applied.
 	 *
 	 * @see #customConversions()
-	 * @see #mongoMappingContext(MongoCustomConversions, org.springframework.data.mongodb.MongoManagedTypes)
+	 * @see #mongoMappingContext(MongoCustomConversions)
 	 * @see #mongoDbFactory()
 	 */
 	@Bean

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/AbstractReactiveMongoConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2023 the original author or authors.
+ * Copyright 2016-2021 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.
@@ -84,10 +84,10 @@ public abstract class AbstractReactiveMongoConfiguration extends MongoConfigurat
 
 	/**
 	 * Creates a {@link MappingMongoConverter} using the configured {@link #reactiveMongoDbFactory()} and
-	 * {@link #mongoMappingContext(MongoCustomConversions, org.springframework.data.mongodb.MongoManagedTypes)}. Will get {@link #customConversions()} applied.
+	 * {@link #mongoMappingContext(MongoCustomConversions)}. Will get {@link #customConversions()} applied.
 	 *
 	 * @see #customConversions()
-	 * @see #mongoMappingContext(MongoCustomConversions, org.springframework.data.mongodb.MongoManagedTypes)
+	 * @see #mongoMappingContext(MongoCustomConversions)
 	 * @see #reactiveMongoDbFactory()
 	 * @return never {@literal null}.
 	 */

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/BeanNames.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ConnectionStringPropertyEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019-2023 the original author or authors.
+ * Copyright 2019-2021 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.
@@ -30,6 +30,10 @@ import com.mongodb.ConnectionString;
  */
 public class ConnectionStringPropertyEditor extends PropertyEditorSupport {
 
+	/*
+	 * (non-Javadoc)
+	 * @see java.beans.PropertyEditorSupport#setAsText(java.lang.String)
+	 */
 	@Override
 	public void setAsText(@Nullable String connectionString) {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/EnableMongoAuditing.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2023 the original author or authors.
+ * Copyright 2013-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/EnableReactiveMongoAuditing.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2023 the original author or authors.
+ * Copyright 2020-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/GeoJsonConfiguration.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2023 the original author or authors.
+ * Copyright 2015-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/GridFsTemplateParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2023 the original author or authors.
+ * Copyright 2013-2021 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.
@@ -34,6 +34,10 @@ import org.w3c.dom.Element;
  */
 class GridFsTemplateParser extends AbstractBeanDefinitionParser {
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractBeanDefinitionParser#resolveId(org.w3c.dom.Element, org.springframework.beans.factory.support.AbstractBeanDefinition, org.springframework.beans.factory.xml.ParserContext)
+	 */
 	@Override
 	protected String resolveId(Element element, AbstractBeanDefinition definition, ParserContext parserContext)
 			throws BeanDefinitionStoreException {
@@ -42,6 +46,10 @@ class GridFsTemplateParser extends AbstractBeanDefinitionParser {
 		return StringUtils.hasText(id) ? id : BeanNames.GRID_FS_TEMPLATE_BEAN_NAME;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractBeanDefinitionParser#parseInternal(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext)
+	 */
 	@Override
 	protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MappingMongoConverterParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.
@@ -24,6 +24,7 @@ import java.util.List;
 import java.util.Set;
 
 import org.springframework.beans.BeanMetadataElement;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.config.BeanDefinitionHolder;
 import org.springframework.beans.factory.config.RuntimeBeanReference;
@@ -63,7 +64,6 @@ import org.springframework.util.Assert;
 import org.springframework.util.ClassUtils;
 import org.springframework.util.StringUtils;
 import org.springframework.util.xml.DomUtils;
-
 import org.w3c.dom.Element;
 
 /**
@@ -80,7 +80,7 @@ import org.w3c.dom.Element;
 public class MappingMongoConverterParser implements BeanDefinitionParser {
 
 	private static final String BASE_PACKAGE = "base-package";
-	private static final boolean JSR_303_PRESENT = ClassUtils.isPresent("jakarta.validation.Validator",
+	private static final boolean JSR_303_PRESENT = ClassUtils.isPresent("javax.validation.Validator",
 			MappingMongoConverterParser.class.getClassLoader());
 
 	/* (non-Javadoc)
@@ -135,7 +135,9 @@ public class MappingMongoConverterParser implements BeanDefinitionParser {
 					new BeanComponentDefinition(indexOperationsProviderBuilder.getBeanDefinition(), "indexOperationsProvider"));
 		}
 
-		if (!registry.containsBeanDefinition(INDEX_HELPER_BEAN_NAME)) {
+		try {
+			registry.getBeanDefinition(INDEX_HELPER_BEAN_NAME);
+		} catch (NoSuchBeanDefinitionException ignored) {
 
 			BeanDefinitionBuilder indexHelperBuilder = BeanDefinitionBuilder
 					.genericBeanDefinition(MongoPersistentEntityIndexCreator.class);
@@ -149,7 +151,7 @@ public class MappingMongoConverterParser implements BeanDefinitionParser {
 
 		BeanDefinition validatingMongoEventListener = potentiallyCreateValidatingMongoEventListener(element, parserContext);
 
-		if (validatingMongoEventListener != null && !registry.containsBeanDefinition(VALIDATING_EVENT_LISTENER_BEAN_NAME)) {
+		if (validatingMongoEventListener != null) {
 			parserContext.registerBeanComponent(
 					new BeanComponentDefinition(validatingMongoEventListener, VALIDATING_EVENT_LISTENER_BEAN_NAME));
 		}
@@ -163,16 +165,15 @@ public class MappingMongoConverterParser implements BeanDefinitionParser {
 	private BeanDefinition potentiallyCreateValidatingMongoEventListener(Element element, ParserContext parserContext) {
 
 		String disableValidation = element.getAttribute("disable-validation");
-		boolean validationDisabled = StringUtils.hasText(disableValidation) && Boolean.parseBoolean(disableValidation);
+		boolean validationDisabled = StringUtils.hasText(disableValidation) && Boolean.valueOf(disableValidation);
 
 		if (!validationDisabled) {
 
 			BeanDefinitionBuilder builder = BeanDefinitionBuilder.genericBeanDefinition();
-			RuntimeBeanReference validator = getValidator(element, parserContext);
+			RuntimeBeanReference validator = getValidator(builder, parserContext);
 
 			if (validator != null) {
 				builder.getRawBeanDefinition().setBeanClass(ValidatingMongoEventListener.class);
-				builder.getRawBeanDefinition().setSource(element);
 				builder.addConstructorArgValue(validator);
 
 				return builder.getBeanDefinition();
@@ -194,6 +195,7 @@ public class MappingMongoConverterParser implements BeanDefinitionParser {
 		validatorDef.setSource(source);
 		validatorDef.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
 		String validatorName = parserContext.getReaderContext().registerWithGeneratedName(validatorDef);
+		parserContext.registerBeanComponent(new BeanComponentDefinition(validatorDef, validatorName));
 
 		return new RuntimeBeanReference(validatorName);
 	}
@@ -253,7 +255,7 @@ public class MappingMongoConverterParser implements BeanDefinitionParser {
 				&& Boolean.parseBoolean(abbreviateFieldNames);
 
 		if (fieldNamingStrategyReferenced && abbreviationActivated) {
-			context.error("Field name abbreviation cannot be activated if a field-naming-strategy-ref is configured",
+			context.error("Field name abbreviation cannot be activated if a field-naming-strategy-ref is configured!",
 					element);
 			return;
 		}
@@ -374,6 +376,10 @@ public class MappingMongoConverterParser implements BeanDefinitionParser {
 			this.delegates = new HashSet<>(Arrays.asList(filters));
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.core.type.filter.TypeFilter#match(org.springframework.core.type.classreading.MetadataReader, org.springframework.core.type.classreading.MetadataReaderFactory)
+		 */
 		public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory)
 				throws IOException {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoAuditingBeanDefinitionParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2023 the original author or authors.
+ * Copyright 2012-2021 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.
@@ -47,16 +47,28 @@ public class MongoAuditingBeanDefinitionParser extends AbstractSingleBeanDefinit
 	private static boolean PROJECT_REACTOR_AVAILABLE = ClassUtils.isPresent("reactor.core.publisher.Mono",
 			MongoAuditingRegistrar.class.getClassLoader());
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser#getBeanClass(org.w3c.dom.Element)
+	 */
 	@Override
 	protected Class<?> getBeanClass(Element element) {
 		return AuditingEntityCallback.class;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractBeanDefinitionParser#shouldGenerateId()
+	 */
 	@Override
 	protected boolean shouldGenerateId() {
 		return true;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser#doParse(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext, org.springframework.beans.factory.support.BeanDefinitionBuilder)
+	 */
 	@Override
 	protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoAuditingRegistrar.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2023 the original author or authors.
+ * Copyright 2013-2021 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.
@@ -18,10 +18,11 @@ package org.springframework.data.mongodb.config;
 import java.lang.annotation.Annotation;
 
 import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.support.AbstractBeanDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
 import org.springframework.beans.factory.support.BeanDefinitionRegistry;
 import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
-import org.springframework.core.Ordered;
+import org.springframework.core.type.AnnotationMetadata;
 import org.springframework.data.auditing.IsNewAwareAuditingHandler;
 import org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport;
 import org.springframework.data.auditing.config.AuditingConfiguration;
@@ -35,42 +36,68 @@ import org.springframework.util.Assert;
  * @author Thomas Darimont
  * @author Oliver Gierke
  * @author Mark Paluch
- * @author Christoph Strobl
  */
-class MongoAuditingRegistrar extends AuditingBeanDefinitionRegistrarSupport implements Ordered {
+class MongoAuditingRegistrar extends AuditingBeanDefinitionRegistrarSupport {
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#getAnnotation()
+	 */
 	@Override
 	protected Class<? extends Annotation> getAnnotation() {
 		return EnableMongoAuditing.class;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#getAuditingHandlerBeanName()
+	 */
 	@Override
 	protected String getAuditingHandlerBeanName() {
 		return "mongoAuditingHandler";
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#registerBeanDefinitions(org.springframework.core.type.AnnotationMetadata, org.springframework.beans.factory.support.BeanDefinitionRegistry)
+	 */
 	@Override
-	protected void postProcess(BeanDefinitionBuilder builder, AuditingConfiguration configuration,
-			BeanDefinitionRegistry registry) {
+	public void registerBeanDefinitions(AnnotationMetadata annotationMetadata, BeanDefinitionRegistry registry) {
 
-		builder.setFactoryMethod("from").addConstructorArgReference("mongoMappingContext");
+		Assert.notNull(annotationMetadata, "AnnotationMetadata must not be null!");
+		Assert.notNull(registry, "BeanDefinitionRegistry must not be null!");
+
+		super.registerBeanDefinitions(annotationMetadata, registry);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#getAuditHandlerBeanDefinitionBuilder(org.springframework.data.auditing.config.AuditingConfiguration)
+	 */
 	@Override
 	protected BeanDefinitionBuilder getAuditHandlerBeanDefinitionBuilder(AuditingConfiguration configuration) {
 
-		Assert.notNull(configuration, "AuditingConfiguration must not be null");
+		Assert.notNull(configuration, "AuditingConfiguration must not be null!");
 
-		return configureDefaultAuditHandlerAttributes(configuration,
-				BeanDefinitionBuilder.rootBeanDefinition(IsNewAwareAuditingHandler.class));
+		BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(IsNewAwareAuditingHandler.class);
+
+		BeanDefinitionBuilder definition = BeanDefinitionBuilder.genericBeanDefinition(PersistentEntitiesFactoryBean.class);
+		definition.setAutowireMode(AbstractBeanDefinition.AUTOWIRE_CONSTRUCTOR);
+
+		builder.addConstructorArgValue(definition.getBeanDefinition());
+		return configureDefaultAuditHandlerAttributes(configuration, builder);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#registerAuditListener(org.springframework.beans.factory.config.BeanDefinition, org.springframework.beans.factory.support.BeanDefinitionRegistry)
+	 */
 	@Override
 	protected void registerAuditListenerBeanDefinition(BeanDefinition auditingHandlerDefinition,
 			BeanDefinitionRegistry registry) {
 
-		Assert.notNull(auditingHandlerDefinition, "BeanDefinition must not be null");
-		Assert.notNull(registry, "BeanDefinitionRegistry must not be null");
+		Assert.notNull(auditingHandlerDefinition, "BeanDefinition must not be null!");
+		Assert.notNull(registry, "BeanDefinitionRegistry must not be null!");
 
 		BeanDefinitionBuilder listenerBeanDefinitionBuilder = BeanDefinitionBuilder
 				.rootBeanDefinition(AuditingEntityCallback.class);
@@ -81,8 +108,4 @@ class MongoAuditingRegistrar extends AuditingBeanDefinitionRegistrarSupport impl
 				AuditingEntityCallback.class.getName(), registry);
 	}
 
-	@Override
-	public int getOrder() {
-		return Ordered.LOWEST_PRECEDENCE;
-	}
 }

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoClientParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2023 the original author or authors.
+ * Copyright 2015-2021 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.
@@ -35,6 +35,10 @@ import org.w3c.dom.Element;
  */
 public class MongoClientParser implements BeanDefinitionParser {
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.BeanDefinitionParser#parse(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext)
+	 */
 	public BeanDefinition parse(Element element, ParserContext parserContext) {
 
 		Object source = parserContext.extractSource(element);

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoConfigurationSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2023 the original author or authors.
+ * Copyright 2016-2021 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.
@@ -30,7 +30,6 @@ import org.springframework.data.convert.CustomConversions;
 import org.springframework.data.mapping.model.CamelCaseAbbreviatingFieldNamingStrategy;
 import org.springframework.data.mapping.model.FieldNamingStrategy;
 import org.springframework.data.mapping.model.PropertyNameFieldNamingStrategy;
-import org.springframework.data.mongodb.MongoManagedTypes;
 import org.springframework.data.mongodb.core.convert.MongoCustomConversions;
 import org.springframework.data.mongodb.core.convert.MongoCustomConversions.MongoConverterConfigurationAdapter;
 import org.springframework.data.mongodb.core.mapping.Document;
@@ -77,13 +76,14 @@ public abstract class MongoConfigurationSupport {
 	 *
 	 * @see #getMappingBasePackages()
 	 * @return
+	 * @throws ClassNotFoundException
 	 */
 	@Bean
-	public MongoMappingContext mongoMappingContext(MongoCustomConversions customConversions,
-			MongoManagedTypes mongoManagedTypes) {
+	public MongoMappingContext mongoMappingContext(MongoCustomConversions customConversions)
+			throws ClassNotFoundException {
 
 		MongoMappingContext mappingContext = new MongoMappingContext();
-		mappingContext.setManagedTypes(mongoManagedTypes);
+		mappingContext.setInitialEntitySet(getInitialEntitySet());
 		mappingContext.setSimpleTypeHolder(customConversions.getSimpleTypeHolder());
 		mappingContext.setFieldNamingStrategy(fieldNamingStrategy());
 		mappingContext.setAutoIndexCreation(autoIndexCreation());
@@ -91,16 +91,6 @@ public abstract class MongoConfigurationSupport {
 		return mappingContext;
 	}
 
-	/**
-	 * @return new instance of {@link MongoManagedTypes}.
-	 * @throws ClassNotFoundException
-	 * @since 4.0
-	 */
-	@Bean
-	public MongoManagedTypes mongoManagedTypes() throws ClassNotFoundException {
-		return MongoManagedTypes.fromIterable(getInitialEntitySet());
-	}
-
 	/**
 	 * Register custom {@link Converter}s in a {@link CustomConversions} object if required. These
 	 * {@link CustomConversions} will be registered with the
@@ -182,7 +172,8 @@ public abstract class MongoConfigurationSupport {
 
 	/**
 	 * Configures whether to abbreviate field names for domain objects by configuring a
-	 * {@link CamelCaseAbbreviatingFieldNamingStrategy} on the {@link MongoMappingContext} instance created.
+	 * {@link CamelCaseAbbreviatingFieldNamingStrategy} on the {@link MongoMappingContext} instance created. For advanced
+	 * customization needs, consider overriding {@link #mappingMongoConverter()}.
 	 *
 	 * @return
 	 */

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoCredentialPropertyEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2023 the original author or authors.
+ * Copyright 2015-2021 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.
@@ -51,6 +51,10 @@ public class MongoCredentialPropertyEditor extends PropertyEditorSupport {
 	private static final String OPTIONS_DELIMITER = "?";
 	private static final String OPTION_VALUE_DELIMITER = "&";
 
+	/*
+	 * (non-Javadoc)
+	 * @see java.beans.PropertyEditorSupport#setAsText(java.lang.String)
+	 */
 	@Override
 	public void setAsText(@Nullable String text) throws IllegalArgumentException {
 
@@ -117,7 +121,7 @@ public class MongoCredentialPropertyEditor extends PropertyEditorSupport {
 								userNameAndPassword[1].toCharArray()));
 					} else {
 						throw new IllegalArgumentException(
-								String.format("Cannot create MongoCredentials for unknown auth mechanism '%s'", authMechanism));
+								String.format("Cannot create MongoCredentials for unknown auth mechanism '%s'!", authMechanism));
 					}
 				}
 			} else {
@@ -194,7 +198,7 @@ public class MongoCredentialPropertyEditor extends PropertyEditorSupport {
 			String[] optionArgs = option.split("=");
 
 			if (optionArgs.length == 1) {
-				throw new IllegalArgumentException(String.format("Query parameter '%s' has no value", optionArgs[0]));
+				throw new IllegalArgumentException(String.format("Query parameter '%s' has no value!", optionArgs[0]));
 			}
 
 			properties.put(optionArgs[0], optionArgs[1]);
@@ -209,21 +213,21 @@ public class MongoCredentialPropertyEditor extends PropertyEditorSupport {
 
 		if (source.length != 2) {
 			throw new IllegalArgumentException(
-					"Credentials need to specify username and password like in 'username:password@database'");
+					"Credentials need to specify username and password like in 'username:password@database'!");
 		}
 	}
 
 	private static void verifyDatabasePresent(String source) {
 
 		if (!StringUtils.hasText(source)) {
-			throw new IllegalArgumentException("Credentials need to specify database like in 'username:password@database'");
+			throw new IllegalArgumentException("Credentials need to specify database like in 'username:password@database'!");
 		}
 	}
 
 	private static void verifyUserNamePresent(String[] source) {
 
 		if (source.length == 0 || !StringUtils.hasText(source[0])) {
-			throw new IllegalArgumentException("Credentials need to specify username");
+			throw new IllegalArgumentException("Credentials need to specify username!");
 		}
 	}
 
@@ -231,7 +235,7 @@ public class MongoCredentialPropertyEditor extends PropertyEditorSupport {
 		try {
 			return URLDecoder.decode(it, "UTF-8");
 		} catch (UnsupportedEncodingException e) {
-			throw new IllegalArgumentException("o_O UTF-8 not supported", e);
+			throw new IllegalArgumentException("o_O UTF-8 not supported!", e);
 		}
 	}
 }

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoDbFactoryParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.
@@ -62,6 +62,10 @@ public class MongoDbFactoryParser extends AbstractBeanDefinitionParser {
 		MONGO_URI_ALLOWED_ADDITIONAL_ATTRIBUTES = Collections.unmodifiableSet(mongoUriAllowedAdditionalAttributes);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractBeanDefinitionParser#resolveId(org.w3c.dom.Element, org.springframework.beans.factory.support.AbstractBeanDefinition, org.springframework.beans.factory.xml.ParserContext)
+	 */
 	@Override
 	protected String resolveId(Element element, AbstractBeanDefinition definition, ParserContext parserContext)
 			throws BeanDefinitionStoreException {
@@ -70,6 +74,10 @@ public class MongoDbFactoryParser extends AbstractBeanDefinitionParser {
 		return StringUtils.hasText(id) ? id : BeanNames.DB_FACTORY_BEAN_NAME;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractBeanDefinitionParser#parseInternal(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext)
+	 */
 	@Override
 	protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {
 
@@ -163,7 +171,7 @@ public class MongoDbFactoryParser extends AbstractBeanDefinitionParser {
 
 		if (element.getAttributes().getLength() > allowedAttributesCount) {
 
-			parserContext.getReaderContext().error("Configure either MongoDB " + type + " or details individually",
+			parserContext.getReaderContext().error("Configure either MongoDB " + type + " or details individually!",
 					parserContext.extractSource(element));
 		}
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoJmxParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoNamespaceHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.
@@ -26,6 +26,10 @@ import org.springframework.beans.factory.xml.NamespaceHandlerSupport;
  */
 public class MongoNamespaceHandler extends NamespaceHandlerSupport {
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.NamespaceHandler#init()
+	 */
 	public void init() {
 
 		registerBeanDefinitionParser("mapping-converter", new MappingMongoConverterParser());

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoParsingUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.
@@ -22,12 +22,9 @@ import java.util.Map;
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.config.CustomEditorConfigurer;
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
-import org.springframework.beans.factory.support.BeanDefinitionValidationException;
 import org.springframework.beans.factory.support.ManagedMap;
 import org.springframework.beans.factory.xml.BeanDefinitionParser;
 import org.springframework.data.mongodb.core.MongoClientSettingsFactoryBean;
-import org.springframework.data.mongodb.core.MongoServerApiFactoryBean;
-import org.springframework.util.StringUtils;
 import org.springframework.util.xml.DomUtils;
 import org.w3c.dom.Element;
 
@@ -40,6 +37,7 @@ import org.w3c.dom.Element;
  * @author Christoph Strobl
  * @author Mark Paluch
  */
+@SuppressWarnings("deprecation")
 abstract class MongoParsingUtils {
 
 	private MongoParsingUtils() {}
@@ -114,20 +112,6 @@ abstract class MongoParsingUtils {
 		// Field level encryption
 		setPropertyReference(clientOptionsDefBuilder, settingsElement, "encryption-settings-ref", "autoEncryptionSettings");
 
-		// ServerAPI
-		if (StringUtils.hasText(settingsElement.getAttribute("server-api-version"))) {
-
-			MongoServerApiFactoryBean serverApiFactoryBean = new MongoServerApiFactoryBean();
-			serverApiFactoryBean.setVersion(settingsElement.getAttribute("server-api-version"));
-			try {
-				clientOptionsDefBuilder.addPropertyValue("serverApi", serverApiFactoryBean.getObject());
-			} catch (Exception exception) {
-				throw new BeanDefinitionValidationException("Non parsable server-api.", exception);
-			}
-		} else {
-			setPropertyReference(clientOptionsDefBuilder, settingsElement, "server-api-ref", "serverApi");
-		}
-
 		// and the rest
 
 		mongoClientBuilder.addPropertyValue("mongoClientSettings", clientOptionsDefBuilder.getBeanDefinition());

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoTemplateParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.
@@ -39,6 +39,10 @@ import org.w3c.dom.Element;
  */
 class MongoTemplateParser extends AbstractBeanDefinitionParser {
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractBeanDefinitionParser#resolveId(org.w3c.dom.Element, org.springframework.beans.factory.support.AbstractBeanDefinition, org.springframework.beans.factory.xml.ParserContext)
+	 */
 	@Override
 	protected String resolveId(Element element, AbstractBeanDefinition definition, ParserContext parserContext)
 			throws BeanDefinitionStoreException {
@@ -47,6 +51,10 @@ class MongoTemplateParser extends AbstractBeanDefinitionParser {
 		return StringUtils.hasText(id) ? id : BeanNames.MONGO_TEMPLATE_BEAN_NAME;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.AbstractBeanDefinitionParser#parseInternal(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext)
+	 */
 	@Override
 	protected AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/PersistentEntitiesFactoryBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2023 the original author or authors.
+ * Copyright 2020-2021 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.
@@ -41,11 +41,19 @@ public class PersistentEntitiesFactoryBean implements FactoryBean<PersistentEnti
 		this.converter = converter;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.FactoryBean#getObject()
+	 */
 	@Override
 	public PersistentEntities getObject() {
 		return PersistentEntities.of(converter.getMappingContext());
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.FactoryBean#getObjectType()
+	 */
 	@Override
 	public Class<?> getObjectType() {
 		return PersistentEntities.class;

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ReactiveMongoAuditingRegistrar.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2023 the original author or authors.
+ * Copyright 2020-2021 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.
@@ -18,9 +18,11 @@ package org.springframework.data.mongodb.config;
 import java.lang.annotation.Annotation;
 
 import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.support.AbstractBeanDefinition;
 import org.springframework.beans.factory.support.BeanDefinitionBuilder;
 import org.springframework.beans.factory.support.BeanDefinitionRegistry;
 import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
+import org.springframework.core.type.AnnotationMetadata;
 import org.springframework.data.auditing.ReactiveIsNewAwareAuditingHandler;
 import org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport;
 import org.springframework.data.auditing.config.AuditingConfiguration;
@@ -32,42 +34,56 @@ import org.springframework.util.Assert;
  * {@link ImportBeanDefinitionRegistrar} to enable {@link EnableReactiveMongoAuditing} annotation.
  *
  * @author Mark Paluch
- * @author Christoph Strobl
  * @since 3.1
  */
 class ReactiveMongoAuditingRegistrar extends AuditingBeanDefinitionRegistrarSupport {
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#getAnnotation()
+	 */
 	@Override
 	protected Class<? extends Annotation> getAnnotation() {
 		return EnableReactiveMongoAuditing.class;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#getAuditingHandlerBeanName()
+	 */
 	@Override
 	protected String getAuditingHandlerBeanName() {
 		return "reactiveMongoAuditingHandler";
 	}
 
-	@Override
-	protected void postProcess(BeanDefinitionBuilder builder, AuditingConfiguration configuration,
-			BeanDefinitionRegistry registry) {
-		builder.setFactoryMethod("from").addConstructorArgReference("mongoMappingContext");
-	}
-
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#getAuditHandlerBeanDefinitionBuilder(org.springframework.data.auditing.config.AuditingConfiguration)
+	 */
 	@Override
 	protected BeanDefinitionBuilder getAuditHandlerBeanDefinitionBuilder(AuditingConfiguration configuration) {
 
-		Assert.notNull(configuration, "AuditingConfiguration must not be null");
+		Assert.notNull(configuration, "AuditingConfiguration must not be null!");
 
-		return configureDefaultAuditHandlerAttributes(configuration,
-				BeanDefinitionBuilder.rootBeanDefinition(ReactiveIsNewAwareAuditingHandler.class));
+		BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(ReactiveIsNewAwareAuditingHandler.class);
+
+		BeanDefinitionBuilder definition = BeanDefinitionBuilder.genericBeanDefinition(PersistentEntitiesFactoryBean.class);
+		definition.setAutowireMode(AbstractBeanDefinition.AUTOWIRE_CONSTRUCTOR);
+
+		builder.addConstructorArgValue(definition.getBeanDefinition());
+		return configureDefaultAuditHandlerAttributes(configuration, builder);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.auditing.config.AuditingBeanDefinitionRegistrarSupport#registerAuditListener(org.springframework.beans.factory.config.BeanDefinition, org.springframework.beans.factory.support.BeanDefinitionRegistry)
+	 */
 	@Override
 	protected void registerAuditListenerBeanDefinition(BeanDefinition auditingHandlerDefinition,
 			BeanDefinitionRegistry registry) {
 
-		Assert.notNull(auditingHandlerDefinition, "BeanDefinition must not be null");
-		Assert.notNull(registry, "BeanDefinitionRegistry must not be null");
+		Assert.notNull(auditingHandlerDefinition, "BeanDefinition must not be null!");
+		Assert.notNull(registry, "BeanDefinitionRegistry must not be null!");
 
 		BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(ReactiveAuditingEntityCallback.class);
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ReadConcernPropertyEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019-2023 the original author or authors.
+ * Copyright 2019-2021 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.
@@ -32,6 +32,10 @@ import com.mongodb.ReadConcernLevel;
  */
 public class ReadConcernPropertyEditor extends PropertyEditorSupport {
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.beans.factory.xml.BeanDefinitionParser#parse(org.w3c.dom.Element, org.springframework.beans.factory.xml.ParserContext)
+	 */
 	@Override
 	public void setAsText(@Nullable String readConcernString) {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ReadPreferencePropertyEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2023 the original author or authors.
+ * Copyright 2015-2021 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.
@@ -29,6 +29,10 @@ import com.mongodb.ReadPreference;
  */
 public class ReadPreferencePropertyEditor extends PropertyEditorSupport {
 
+	/*
+	 * (non-Javadoc)
+	 * @see java.beans.PropertyEditorSupport#setAsText(java.lang.String)
+	 */
 	@Override
 	public void setAsText(@Nullable String readPreferenceString) throws IllegalArgumentException {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ServerAddressPropertyEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.
@@ -21,8 +21,8 @@ import java.net.UnknownHostException;
 import java.util.HashSet;
 import java.util.Set;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
@@ -43,9 +43,13 @@ public class ServerAddressPropertyEditor extends PropertyEditorSupport {
 	 * A port is a number without a leading 0 at the end of the address that is proceeded by just a single :.
 	 */
 	private static final String HOST_PORT_SPLIT_PATTERN = "(?<!:):(?=[123456789]\\d*$)";
-	private static final String COULD_NOT_PARSE_ADDRESS_MESSAGE = "Could not parse address %s '%s'; Check your replica set configuration";
-	private static final Log LOG = LogFactory.getLog(ServerAddressPropertyEditor.class);
+	private static final String COULD_NOT_PARSE_ADDRESS_MESSAGE = "Could not parse address {} '{}'. Check your replica set configuration!";
+	private static final Logger LOG = LoggerFactory.getLogger(ServerAddressPropertyEditor.class);
 
+	/*
+	 * (non-Javadoc)
+	 * @see java.beans.PropertyEditorSupport#setAsText(java.lang.String)
+	 */
 	@Override
 	public void setAsText(@Nullable String replicaSetString) {
 
@@ -68,7 +72,7 @@ public class ServerAddressPropertyEditor extends PropertyEditorSupport {
 
 		if (serverAddresses.isEmpty()) {
 			throw new IllegalArgumentException(
-					"Could not resolve at least one server of the replica set configuration; Validate your config");
+					"Could not resolve at least one server of the replica set configuration! Validate your config!");
 		}
 
 		setValue(serverAddresses.toArray(new ServerAddress[serverAddresses.size()]));
@@ -84,18 +88,14 @@ public class ServerAddressPropertyEditor extends PropertyEditorSupport {
 	private ServerAddress parseServerAddress(String source) {
 
 		if (!StringUtils.hasText(source)) {
-			if(LOG.isWarnEnabled()) {
-				LOG.warn(String.format(COULD_NOT_PARSE_ADDRESS_MESSAGE, "source", source));
-			}
+			LOG.warn(COULD_NOT_PARSE_ADDRESS_MESSAGE, "source", source);
 			return null;
 		}
 
 		String[] hostAndPort = extractHostAddressAndPort(source.trim());
 
 		if (hostAndPort.length > 2) {
-			if(LOG.isWarnEnabled()) {
-				LOG.warn(String.format(COULD_NOT_PARSE_ADDRESS_MESSAGE, "source", source));
-			}
+			LOG.warn(COULD_NOT_PARSE_ADDRESS_MESSAGE, "source", source);
 			return null;
 		}
 
@@ -105,13 +105,9 @@ public class ServerAddressPropertyEditor extends PropertyEditorSupport {
 
 			return port == null ? new ServerAddress(hostAddress) : new ServerAddress(hostAddress, port);
 		} catch (UnknownHostException e) {
-			if(LOG.isWarnEnabled()) {
-				LOG.warn(String.format(COULD_NOT_PARSE_ADDRESS_MESSAGE, "host", hostAndPort[0]));
-			}
+			LOG.warn(COULD_NOT_PARSE_ADDRESS_MESSAGE, "host", hostAndPort[0]);
 		} catch (NumberFormatException e) {
-			if(LOG.isWarnEnabled()) {
-				LOG.warn(String.format(COULD_NOT_PARSE_ADDRESS_MESSAGE, "port", hostAndPort[1]));
-			}
+			LOG.warn(COULD_NOT_PARSE_ADDRESS_MESSAGE, "port", hostAndPort[1]);
 		}
 
 		return null;
@@ -125,7 +121,7 @@ public class ServerAddressPropertyEditor extends PropertyEditorSupport {
 	 */
 	private String[] extractHostAddressAndPort(String addressAndPortSource) {
 
-		Assert.notNull(addressAndPortSource, "Address and port source must not be null");
+		Assert.notNull(addressAndPortSource, "Address and port source must not be null!");
 
 		String[] hostAndPort = addressAndPortSource.split(HOST_PORT_SPLIT_PATTERN);
 		String hostAddress = hostAndPort[0];

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/StringToWriteConcernConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2023 the original author or authors.
+ * Copyright 2012-2021 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.
@@ -26,6 +26,10 @@ import com.mongodb.WriteConcern;
  */
 public class StringToWriteConcernConverter implements Converter<String, WriteConcern> {
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.core.convert.converter.Converter#convert(java.lang.Object)
+	 */
 	public WriteConcern convert(String source) {
 
 		WriteConcern writeConcern = WriteConcern.valueOf(source);

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/UUidRepresentationPropertyEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2020-2023 the original author or authors.
+ * Copyright 2020-2021 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.
@@ -29,6 +29,10 @@ import org.springframework.util.StringUtils;
  */
 public class UUidRepresentationPropertyEditor extends PropertyEditorSupport {
 
+	/*
+	 * (non-Javadoc)
+	 * @see java.beans.PropertyEditorSupport#setAsText(java.lang.String)
+	 */
 	@Override
 	public void setAsText(@Nullable String value) {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/WriteConcernPropertyEditor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/AggregationUtil.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -15,6 +15,8 @@
  */
 package org.springframework.data.mongodb.core;
 
+import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
 import java.util.stream.Collectors;
@@ -22,16 +24,23 @@ import java.util.stream.Collectors;
 import org.bson.Document;
 import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.mongodb.core.aggregation.Aggregation;
+import org.springframework.data.mongodb.core.aggregation.AggregationOperation;
 import org.springframework.data.mongodb.core.aggregation.AggregationOperationContext;
+import org.springframework.data.mongodb.core.aggregation.AggregationOptions;
 import org.springframework.data.mongodb.core.aggregation.AggregationOptions.DomainTypeMapping;
+import org.springframework.data.mongodb.core.aggregation.CountOperation;
 import org.springframework.data.mongodb.core.aggregation.RelaxedTypeBasedAggregationOperationContext;
 import org.springframework.data.mongodb.core.aggregation.TypeBasedAggregationOperationContext;
 import org.springframework.data.mongodb.core.aggregation.TypedAggregation;
 import org.springframework.data.mongodb.core.convert.QueryMapper;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
+import org.springframework.data.mongodb.core.query.CriteriaDefinition;
+import org.springframework.data.mongodb.core.query.Query;
 import org.springframework.data.util.Lazy;
 import org.springframework.lang.Nullable;
+import org.springframework.util.Assert;
+import org.springframework.util.ObjectUtils;
 
 /**
  * Utility methods to map {@link org.springframework.data.mongodb.core.aggregation.Aggregation} pipeline definitions and
@@ -95,7 +104,12 @@ class AggregationUtil {
 	 * @return
 	 */
 	List<Document> createPipeline(Aggregation aggregation, AggregationOperationContext context) {
-		return aggregation.toPipeline(context);
+
+		if (ObjectUtils.nullSafeEquals(context, Aggregation.DEFAULT_CONTEXT)) {
+			return aggregation.toPipeline(context);
+		}
+
+		return mapAggregationPipeline(aggregation.toPipeline(context));
 	}
 
 	/**
@@ -106,7 +120,16 @@ class AggregationUtil {
 	 * @return
 	 */
 	Document createCommand(String collection, Aggregation aggregation, AggregationOperationContext context) {
-		return aggregation.toDocument(collection, context);
+
+		Document command = aggregation.toDocument(collection, context);
+
+		if (!ObjectUtils.nullSafeEquals(context, Aggregation.DEFAULT_CONTEXT)) {
+			return command;
+		}
+
+		command.put("pipeline", mapAggregationPipeline(command.get("pipeline", List.class)));
+
+		return command;
 	}
 
 	private List<Document> mapAggregationPipeline(List<Document> pipeline) {

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/BulkOperations.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2023 the original author or authors.
+ * Copyright 2015-2021 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.
@@ -24,14 +24,10 @@ import org.springframework.data.util.Pair;
 import com.mongodb.bulk.BulkWriteResult;
 
 /**
- * Bulk operations for insert/update/remove actions on a collection. Bulk operations are available since MongoDB 2.6 and
- * make use of low level bulk commands on the protocol level. This interface defines a fluent API to add multiple single
- * operations or list of similar operations in sequence which can then eventually be executed by calling
+ * Bulk operations for insert/update/remove actions on a collection. These bulks operation are available since MongoDB
+ * 2.6 and make use of low level bulk commands on the protocol level. This interface defines a fluent API to add
+ * multiple single operations or list of similar operations in sequence which can then eventually be executed by calling
  * {@link #execute()}.
- * <p>
- * Bulk operations are issued as one batch that pulls together all insert, update, and delete operations. Operations
- * that require individual operation results such as optimistic locking (using {@code @Version}) are not supported and
- * the version field remains not populated.
  *
  * @author Tobias Trelle
  * @author Oliver Gierke

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ChangeStreamEvent.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -36,29 +36,21 @@ import com.mongodb.client.model.changestream.OperationType;
  *
  * @author Christoph Strobl
  * @author Mark Paluch
- * @author Myroslav Kosinskyi
  * @since 2.1
  */
 public class ChangeStreamEvent<T> {
 
 	@SuppressWarnings("rawtypes") //
-	private static final AtomicReferenceFieldUpdater<ChangeStreamEvent, Object> CONVERTED_FULL_DOCUMENT_UPDATER = AtomicReferenceFieldUpdater
-			.newUpdater(ChangeStreamEvent.class, Object.class, "convertedFullDocument");
-
-	@SuppressWarnings("rawtypes") //
-	private static final AtomicReferenceFieldUpdater<ChangeStreamEvent, Object> CONVERTED_FULL_DOCUMENT_BEFORE_CHANGE_UPDATER = AtomicReferenceFieldUpdater
-			.newUpdater(ChangeStreamEvent.class, Object.class, "convertedFullDocumentBeforeChange");
+	private static final AtomicReferenceFieldUpdater<ChangeStreamEvent, Object> CONVERTED_UPDATER = AtomicReferenceFieldUpdater
+			.newUpdater(ChangeStreamEvent.class, Object.class, "converted");
 
 	private final @Nullable ChangeStreamDocument<Document> raw;
 
 	private final Class<T> targetType;
 	private final MongoConverter converter;
 
-	// accessed through CONVERTED_FULL_DOCUMENT_UPDATER.
-	private volatile @Nullable T convertedFullDocument;
-
-	// accessed through CONVERTED_FULL_DOCUMENT_BEFORE_CHANGE_UPDATER.
-	private volatile @Nullable T convertedFullDocumentBeforeChange;
+	// accessed through CONVERTED_UPDATER.
+	private volatile @Nullable T converted;
 
 	/**
 	 * @param raw can be {@literal null}.
@@ -155,43 +147,27 @@ public class ChangeStreamEvent<T> {
 	@Nullable
 	public T getBody() {
 
-		if (raw == null || raw.getFullDocument() == null) {
+		if (raw == null) {
 			return null;
 		}
 
-		return getConvertedFullDocument(raw.getFullDocument());
-	}
+		Document fullDocument = raw.getFullDocument();
 
-	/**
-	 * Get the potentially converted {@link ChangeStreamDocument#getFullDocumentBeforeChange() document} before being changed.
-	 *
-	 * @return {@literal null} when {@link #getRaw()} or {@link ChangeStreamDocument#getFullDocumentBeforeChange()} is
-	 *         {@literal null}.
-	 * @since 4.0
-	 */
-	@Nullable
-	public T getBodyBeforeChange() {
-
-		if (raw == null || raw.getFullDocumentBeforeChange() == null) {
-			return null;
+		if (fullDocument == null) {
+			return targetType.cast(fullDocument);
 		}
 
-		return getConvertedFullDocumentBeforeChange(raw.getFullDocumentBeforeChange());
+		return getConverted(fullDocument);
 	}
 
 	@SuppressWarnings("unchecked")
-	private T getConvertedFullDocumentBeforeChange(Document fullDocument) {
-		return (T) doGetConverted(fullDocument, CONVERTED_FULL_DOCUMENT_BEFORE_CHANGE_UPDATER);
+	private T getConverted(Document fullDocument) {
+		return (T) doGetConverted(fullDocument);
 	}
 
-	@SuppressWarnings("unchecked")
-	private T getConvertedFullDocument(Document fullDocument) {
-		return (T) doGetConverted(fullDocument, CONVERTED_FULL_DOCUMENT_UPDATER);
-	}
+	private Object doGetConverted(Document fullDocument) {
 
-	private Object doGetConverted(Document fullDocument, AtomicReferenceFieldUpdater<ChangeStreamEvent, Object> updater) {
-
-		Object result = updater.get(this);
+		Object result = CONVERTED_UPDATER.get(this);
 
 		if (result != null) {
 			return result;
@@ -200,26 +176,30 @@ public class ChangeStreamEvent<T> {
 		if (ClassUtils.isAssignable(Document.class, fullDocument.getClass())) {
 
 			result = converter.read(targetType, fullDocument);
-			return updater.compareAndSet(this, null, result) ? result : updater.get(this);
+			return CONVERTED_UPDATER.compareAndSet(this, null, result) ? result : CONVERTED_UPDATER.get(this);
 		}
 
 		if (converter.getConversionService().canConvert(fullDocument.getClass(), targetType)) {
 
 			result = converter.getConversionService().convert(fullDocument, targetType);
-			return updater.compareAndSet(this, null, result) ? result : updater.get(this);
+			return CONVERTED_UPDATER.compareAndSet(this, null, result) ? result : CONVERTED_UPDATER.get(this);
 		}
 
 		throw new IllegalArgumentException(
 				String.format("No converter found capable of converting %s to %s", fullDocument.getClass(), targetType));
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see java.lang.Object#toString()
+	 */
 	@Override
 	public String toString() {
 		return "ChangeStreamEvent {" + "raw=" + raw + ", targetType=" + targetType + '}';
 	}
 
 	@Override
-	public boolean equals(@Nullable Object o) {
+	public boolean equals(Object o) {
 
 		if (this == o)
 			return true;

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ChangeStreamOptions.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -32,7 +32,6 @@ import org.springframework.util.ObjectUtils;
 
 import com.mongodb.client.model.changestream.ChangeStreamDocument;
 import com.mongodb.client.model.changestream.FullDocument;
-import com.mongodb.client.model.changestream.FullDocumentBeforeChange;
 
 /**
  * Options applicable to MongoDB <a href="https://docs.mongodb.com/manual/changeStreams/">Change Streams</a>. Intended
@@ -41,7 +40,6 @@ import com.mongodb.client.model.changestream.FullDocumentBeforeChange;
  *
  * @author Christoph Strobl
  * @author Mark Paluch
- * @author Myroslav Kosinskyi
  * @since 2.1
  */
 public class ChangeStreamOptions {
@@ -49,7 +47,6 @@ public class ChangeStreamOptions {
 	private @Nullable Object filter;
 	private @Nullable BsonValue resumeToken;
 	private @Nullable FullDocument fullDocumentLookup;
-	private @Nullable FullDocumentBeforeChange fullDocumentBeforeChangeLookup;
 	private @Nullable Collation collation;
 	private @Nullable Object resumeTimestamp;
 	private Resume resume = Resume.UNDEFINED;
@@ -77,14 +74,6 @@ public class ChangeStreamOptions {
 		return Optional.ofNullable(fullDocumentLookup);
 	}
 
-	/**
-	 * @return {@link Optional#empty()} if not set.
-	 * @since 4.0
-	 */
-	public Optional<FullDocumentBeforeChange> getFullDocumentBeforeChangeLookup() {
-		return Optional.ofNullable(fullDocumentBeforeChangeLookup);
-	}
-
 	/**
 	 * @return {@link Optional#empty()} if not set.
 	 */
@@ -159,12 +148,12 @@ public class ChangeStreamOptions {
 		}
 
 		throw new IllegalArgumentException(
-				"o_O that should actually not happen; The timestamp should be an Instant or a BsonTimestamp but was "
+				"o_O that should actually not happen. The timestamp should be an Instant or a BsonTimestamp but was "
 						+ ObjectUtils.nullSafeClassName(timestamp));
 	}
 
 	@Override
-	public boolean equals(@Nullable Object o) {
+	public boolean equals(Object o) {
 		if (this == o)
 			return true;
 		if (o == null || getClass() != o.getClass())
@@ -181,9 +170,6 @@ public class ChangeStreamOptions {
 		if (!ObjectUtils.nullSafeEquals(this.fullDocumentLookup, that.fullDocumentLookup)) {
 			return false;
 		}
-		if (!ObjectUtils.nullSafeEquals(this.fullDocumentBeforeChangeLookup, that.fullDocumentBeforeChangeLookup)) {
-			return false;
-		}
 		if (!ObjectUtils.nullSafeEquals(this.collation, that.collation)) {
 			return false;
 		}
@@ -198,7 +184,6 @@ public class ChangeStreamOptions {
 		int result = ObjectUtils.nullSafeHashCode(filter);
 		result = 31 * result + ObjectUtils.nullSafeHashCode(resumeToken);
 		result = 31 * result + ObjectUtils.nullSafeHashCode(fullDocumentLookup);
-		result = 31 * result + ObjectUtils.nullSafeHashCode(fullDocumentBeforeChangeLookup);
 		result = 31 * result + ObjectUtils.nullSafeHashCode(collation);
 		result = 31 * result + ObjectUtils.nullSafeHashCode(resumeTimestamp);
 		result = 31 * result + ObjectUtils.nullSafeHashCode(resume);
@@ -235,7 +220,6 @@ public class ChangeStreamOptions {
 		private @Nullable Object filter;
 		private @Nullable BsonValue resumeToken;
 		private @Nullable FullDocument fullDocumentLookup;
-		private @Nullable FullDocumentBeforeChange fullDocumentBeforeChangeLookup;
 		private @Nullable Collation collation;
 		private @Nullable Object resumeTimestamp;
 		private Resume resume = Resume.UNDEFINED;
@@ -250,7 +234,7 @@ public class ChangeStreamOptions {
 		 */
 		public ChangeStreamOptionsBuilder collation(Collation collation) {
 
-			Assert.notNull(collation, "Collation must not be null nor empty");
+			Assert.notNull(collation, "Collation must not be null nor empty!");
 
 			this.collation = collation;
 			return this;
@@ -258,13 +242,13 @@ public class ChangeStreamOptions {
 
 		/**
 		 * Set the filter to apply.
-		 * <br />
+		 * <p/>
 		 * Fields on aggregation expression root level are prefixed to map to fields contained in
 		 * {@link ChangeStreamDocument#getFullDocument() fullDocument}. However {@literal operationType}, {@literal ns},
 		 * {@literal documentKey} and {@literal fullDocument} are reserved words that will be omitted, and therefore taken
 		 * as given, during the mapping procedure. You may want to have a look at the
 		 * <a href="https://docs.mongodb.com/manual/reference/change-events/">structure of Change Events</a>.
-		 * <br />
+		 * <p/>
 		 * Use {@link org.springframework.data.mongodb.core.aggregation.TypedAggregation} to ensure filter expressions are
 		 * mapped to domain type fields.
 		 *
@@ -274,7 +258,7 @@ public class ChangeStreamOptions {
 		 */
 		public ChangeStreamOptionsBuilder filter(Aggregation filter) {
 
-			Assert.notNull(filter, "Filter must not be null");
+			Assert.notNull(filter, "Filter must not be null!");
 
 			this.filter = filter;
 			return this;
@@ -303,7 +287,7 @@ public class ChangeStreamOptions {
 		 */
 		public ChangeStreamOptionsBuilder resumeToken(BsonValue resumeToken) {
 
-			Assert.notNull(resumeToken, "ResumeToken must not be null");
+			Assert.notNull(resumeToken, "ResumeToken must not be null!");
 
 			this.resumeToken = resumeToken;
 
@@ -332,38 +316,12 @@ public class ChangeStreamOptions {
 		 */
 		public ChangeStreamOptionsBuilder fullDocumentLookup(FullDocument lookup) {
 
-			Assert.notNull(lookup, "Lookup must not be null");
+			Assert.notNull(lookup, "Lookup must not be null!");
 
 			this.fullDocumentLookup = lookup;
 			return this;
 		}
 
-		/**
-		 * Set the {@link FullDocumentBeforeChange} lookup to use.
-		 *
-		 * @param lookup must not be {@literal null}.
-		 * @return this.
-		 * @since 4.0
-		 */
-		public ChangeStreamOptionsBuilder fullDocumentBeforeChangeLookup(FullDocumentBeforeChange lookup) {
-
-			Assert.notNull(lookup, "Lookup must not be null");
-
-			this.fullDocumentBeforeChangeLookup = lookup;
-			return this;
-		}
-
-		/**
-		 * Return the full document before being changed if it is available.
-		 *
-		 * @return this.
-		 * @since 4.0
-		 * @see #fullDocumentBeforeChangeLookup(FullDocumentBeforeChange) 
-		 */
-		public ChangeStreamOptionsBuilder returnFullDocumentBeforeChange() {
-			return fullDocumentBeforeChangeLookup(FullDocumentBeforeChange.WHEN_AVAILABLE);
-		}
-
 		/**
 		 * Set the cluster time to resume from.
 		 *
@@ -372,7 +330,7 @@ public class ChangeStreamOptions {
 		 */
 		public ChangeStreamOptionsBuilder resumeAt(Instant resumeTimestamp) {
 
-			Assert.notNull(resumeTimestamp, "ResumeTimestamp must not be null");
+			Assert.notNull(resumeTimestamp, "ResumeTimestamp must not be null!");
 
 			this.resumeTimestamp = resumeTimestamp;
 			return this;
@@ -387,7 +345,7 @@ public class ChangeStreamOptions {
 		 */
 		public ChangeStreamOptionsBuilder resumeAt(BsonTimestamp resumeTimestamp) {
 
-			Assert.notNull(resumeTimestamp, "ResumeTimestamp must not be null");
+			Assert.notNull(resumeTimestamp, "ResumeTimestamp must not be null!");
 
 			this.resumeTimestamp = resumeTimestamp;
 			return this;
@@ -433,7 +391,6 @@ public class ChangeStreamOptions {
 			options.filter = this.filter;
 			options.resumeToken = this.resumeToken;
 			options.fullDocumentLookup = this.fullDocumentLookup;
-			options.fullDocumentBeforeChangeLookup = this.fullDocumentBeforeChangeLookup;
 			options.collation = this.collation;
 			options.resumeTimestamp = this.resumeTimestamp;
 			options.resume = this.resume;

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/CollectionCallback.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2023 the original author or authors.
+ * Copyright 2010-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/CollectionOptions.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2023 the original author or authors.
+ * Copyright 2010-2021 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.
@@ -17,16 +17,12 @@ package org.springframework.data.mongodb.core;
 
 import java.util.Optional;
 
-import org.springframework.data.mongodb.core.mapping.Field;
 import org.springframework.data.mongodb.core.query.Collation;
 import org.springframework.data.mongodb.core.schema.MongoJsonSchema;
-import org.springframework.data.mongodb.core.timeseries.Granularity;
-import org.springframework.data.mongodb.core.timeseries.GranularityDefinition;
 import org.springframework.data.mongodb.core.validation.Validator;
 import org.springframework.data.util.Optionals;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
-import org.springframework.util.ObjectUtils;
 
 import com.mongodb.client.model.ValidationAction;
 import com.mongodb.client.model.ValidationLevel;
@@ -46,20 +42,29 @@ public class CollectionOptions {
 	private @Nullable Boolean capped;
 	private @Nullable Collation collation;
 	private ValidationOptions validationOptions;
-	private @Nullable TimeSeriesOptions timeSeriesOptions;
-	private @Nullable CollectionChangeStreamOptions changeStreamOptions;
+
+	/**
+	 * Constructs a new <code>CollectionOptions</code> instance.
+	 *
+	 * @param size the collection size in bytes, this data space is preallocated. Can be {@literal null}.
+	 * @param maxDocuments the maximum number of documents in the collection. Can be {@literal null}.
+	 * @param capped true to created a "capped" collection (fixed size with auto-FIFO behavior based on insertion order),
+	 *          false otherwise. Can be {@literal null}.
+	 * @deprecated since 2.0 please use {@link CollectionOptions#empty()} as entry point.
+	 */
+	@Deprecated
+	public CollectionOptions(@Nullable Long size, @Nullable Long maxDocuments, @Nullable Boolean capped) {
+		this(size, maxDocuments, capped, null, ValidationOptions.none());
+	}
 
 	private CollectionOptions(@Nullable Long size, @Nullable Long maxDocuments, @Nullable Boolean capped,
-			@Nullable Collation collation, ValidationOptions validationOptions, @Nullable TimeSeriesOptions timeSeriesOptions,
-			@Nullable CollectionChangeStreamOptions changeStreamOptions) {
+			@Nullable Collation collation, ValidationOptions validationOptions) {
 
 		this.maxDocuments = maxDocuments;
 		this.size = size;
 		this.capped = capped;
 		this.collation = collation;
 		this.validationOptions = validationOptions;
-		this.timeSeriesOptions = timeSeriesOptions;
-		this.changeStreamOptions = changeStreamOptions;
 	}
 
 	/**
@@ -71,9 +76,9 @@ public class CollectionOptions {
 	 */
 	public static CollectionOptions just(Collation collation) {
 
-		Assert.notNull(collation, "Collation must not be null");
+		Assert.notNull(collation, "Collation must not be null!");
 
-		return new CollectionOptions(null, null, null, collation, ValidationOptions.none(), null, null);
+		return new CollectionOptions(null, null, null, collation, ValidationOptions.none());
 	}
 
 	/**
@@ -83,33 +88,7 @@ public class CollectionOptions {
 	 * @since 2.0
 	 */
 	public static CollectionOptions empty() {
-		return new CollectionOptions(null, null, null, null, ValidationOptions.none(), null, null);
-	}
-
-	/**
-	 * Quick way to set up {@link CollectionOptions} for a Time Series collection. For more advanced settings use
-	 * {@link #timeSeries(TimeSeriesOptions)}.
-	 *
-	 * @param timeField The name of the property which contains the date in each time series document. Must not be
-	 *          {@literal null}.
-	 * @return new instance of {@link CollectionOptions}.
-	 * @see #timeSeries(TimeSeriesOptions)
-	 * @since 3.3
-	 */
-	public static CollectionOptions timeSeries(String timeField) {
-		return empty().timeSeries(TimeSeriesOptions.timeSeries(timeField));
-	}
-
-	/**
-	 * Quick way to set up {@link CollectionOptions} for emitting (pre & post) change events.
-	 *
-	 * @return new instance of {@link CollectionOptions}.
-	 * @see #changeStream(CollectionChangeStreamOptions)
-	 * @see CollectionChangeStreamOptions#preAndPostImages(boolean)
-	 * @since 4.0
-	 */
-	public static CollectionOptions emitChangedRevisions() {
-		return empty().changeStream(CollectionChangeStreamOptions.preAndPostImages(true));
+		return new CollectionOptions(null, null, null, null, ValidationOptions.none());
 	}
 
 	/**
@@ -120,8 +99,7 @@ public class CollectionOptions {
 	 * @since 2.0
 	 */
 	public CollectionOptions capped() {
-		return new CollectionOptions(size, maxDocuments, true, collation, validationOptions, timeSeriesOptions,
-				changeStreamOptions);
+		return new CollectionOptions(size, maxDocuments, true, collation, validationOptions);
 	}
 
 	/**
@@ -132,8 +110,7 @@ public class CollectionOptions {
 	 * @since 2.0
 	 */
 	public CollectionOptions maxDocuments(long maxDocuments) {
-		return new CollectionOptions(size, maxDocuments, capped, collation, validationOptions, timeSeriesOptions,
-				changeStreamOptions);
+		return new CollectionOptions(size, maxDocuments, capped, collation, validationOptions);
 	}
 
 	/**
@@ -144,8 +121,7 @@ public class CollectionOptions {
 	 * @since 2.0
 	 */
 	public CollectionOptions size(long size) {
-		return new CollectionOptions(size, maxDocuments, capped, collation, validationOptions, timeSeriesOptions,
-				changeStreamOptions);
+		return new CollectionOptions(size, maxDocuments, capped, collation, validationOptions);
 	}
 
 	/**
@@ -156,8 +132,7 @@ public class CollectionOptions {
 	 * @since 2.0
 	 */
 	public CollectionOptions collation(@Nullable Collation collation) {
-		return new CollectionOptions(size, maxDocuments, capped, collation, validationOptions, timeSeriesOptions,
-				changeStreamOptions);
+		return new CollectionOptions(size, maxDocuments, capped, collation, validationOptions);
 	}
 
 	/**
@@ -249,7 +224,7 @@ public class CollectionOptions {
 	 */
 	public CollectionOptions schemaValidationLevel(ValidationLevel validationLevel) {
 
-		Assert.notNull(validationLevel, "ValidationLevel must not be null");
+		Assert.notNull(validationLevel, "ValidationLevel must not be null!");
 		return validation(validationOptions.validationLevel(validationLevel));
 	}
 
@@ -263,7 +238,7 @@ public class CollectionOptions {
 	 */
 	public CollectionOptions schemaValidationAction(ValidationAction validationAction) {
 
-		Assert.notNull(validationAction, "ValidationAction must not be null");
+		Assert.notNull(validationAction, "ValidationAction must not be null!");
 		return validation(validationOptions.validationAction(validationAction));
 	}
 
@@ -276,37 +251,8 @@ public class CollectionOptions {
 	 */
 	public CollectionOptions validation(ValidationOptions validationOptions) {
 
-		Assert.notNull(validationOptions, "ValidationOptions must not be null");
-		return new CollectionOptions(size, maxDocuments, capped, collation, validationOptions, timeSeriesOptions,
-				changeStreamOptions);
-	}
-
-	/**
-	 * Create new {@link CollectionOptions} with the given {@link TimeSeriesOptions}.
-	 *
-	 * @param timeSeriesOptions must not be {@literal null}.
-	 * @return new instance of {@link CollectionOptions}.
-	 * @since 3.3
-	 */
-	public CollectionOptions timeSeries(TimeSeriesOptions timeSeriesOptions) {
-
-		Assert.notNull(timeSeriesOptions, "TimeSeriesOptions must not be null");
-		return new CollectionOptions(size, maxDocuments, capped, collation, validationOptions, timeSeriesOptions,
-				changeStreamOptions);
-	}
-
-	/**
-	 * Create new {@link CollectionOptions} with the given {@link TimeSeriesOptions}.
-	 *
-	 * @param changeStreamOptions must not be {@literal null}.
-	 * @return new instance of {@link CollectionOptions}.
-	 * @since 3.3
-	 */
-	public CollectionOptions changeStream(CollectionChangeStreamOptions changeStreamOptions) {
-
-		Assert.notNull(changeStreamOptions, "ChangeStreamOptions must not be null");
-		return new CollectionOptions(size, maxDocuments, capped, collation, validationOptions, timeSeriesOptions,
-				changeStreamOptions);
+		Assert.notNull(validationOptions, "ValidationOptions must not be null!");
+		return new CollectionOptions(size, maxDocuments, capped, collation, validationOptions);
 	}
 
 	/**
@@ -357,80 +303,6 @@ public class CollectionOptions {
 		return validationOptions.isEmpty() ? Optional.empty() : Optional.of(validationOptions);
 	}
 
-	/**
-	 * Get the {@link TimeSeriesOptions} if available.
-	 *
-	 * @return {@link Optional#empty()} if not specified.
-	 * @since 3.3
-	 */
-	public Optional<TimeSeriesOptions> getTimeSeriesOptions() {
-		return Optional.ofNullable(timeSeriesOptions);
-	}
-
-	/**
-	 * Get the {@link CollectionChangeStreamOptions} if available.
-	 *
-	 * @return {@link Optional#empty()} if not specified.
-	 * @since 4.0
-	 */
-	public Optional<CollectionChangeStreamOptions> getChangeStreamOptions() {
-		return Optional.ofNullable(changeStreamOptions);
-	}
-
-	@Override
-	public String toString() {
-		return "CollectionOptions{" + "maxDocuments=" + maxDocuments + ", size=" + size + ", capped=" + capped
-				+ ", collation=" + collation + ", validationOptions=" + validationOptions + ", timeSeriesOptions="
-				+ timeSeriesOptions + ", changeStreamOptions=" + changeStreamOptions + ", disableValidation="
-				+ disableValidation() + ", strictValidation=" + strictValidation() + ", moderateValidation="
-				+ moderateValidation() + ", warnOnValidationError=" + warnOnValidationError() + ", failOnValidationError="
-				+ failOnValidationError() + '}';
-	}
-
-	@Override
-	public boolean equals(@Nullable Object o) {
-		if (this == o) {
-			return true;
-		}
-		if (o == null || getClass() != o.getClass()) {
-			return false;
-		}
-
-		CollectionOptions that = (CollectionOptions) o;
-
-		if (!ObjectUtils.nullSafeEquals(maxDocuments, that.maxDocuments)) {
-			return false;
-		}
-		if (!ObjectUtils.nullSafeEquals(size, that.size)) {
-			return false;
-		}
-		if (!ObjectUtils.nullSafeEquals(capped, that.capped)) {
-			return false;
-		}
-		if (!ObjectUtils.nullSafeEquals(collation, that.collation)) {
-			return false;
-		}
-		if (!ObjectUtils.nullSafeEquals(validationOptions, that.validationOptions)) {
-			return false;
-		}
-		if (!ObjectUtils.nullSafeEquals(timeSeriesOptions, that.timeSeriesOptions)) {
-			return false;
-		}
-		return ObjectUtils.nullSafeEquals(changeStreamOptions, that.changeStreamOptions);
-	}
-
-	@Override
-	public int hashCode() {
-		int result = ObjectUtils.nullSafeHashCode(maxDocuments);
-		result = 31 * result + ObjectUtils.nullSafeHashCode(size);
-		result = 31 * result + ObjectUtils.nullSafeHashCode(capped);
-		result = 31 * result + ObjectUtils.nullSafeHashCode(collation);
-		result = 31 * result + ObjectUtils.nullSafeHashCode(validationOptions);
-		result = 31 * result + ObjectUtils.nullSafeHashCode(timeSeriesOptions);
-		result = 31 * result + ObjectUtils.nullSafeHashCode(changeStreamOptions);
-		return result;
-	}
-
 	/**
 	 * Encapsulation of ValidationOptions options.
 	 *
@@ -513,7 +385,7 @@ public class CollectionOptions {
 		/**
 		 * Get the {@code validationAction} to perform.
 		 *
-		 * @return {@link Optional#empty()} if not set.
+		 * @return @return {@link Optional#empty()} if not set.
 		 */
 		public Optional<ValidationAction> getValidationAction() {
 			return Optional.ofNullable(validationAction);
@@ -525,211 +397,5 @@ public class CollectionOptions {
 		boolean isEmpty() {
 			return !Optionals.isAnyPresent(getValidator(), getValidationAction(), getValidationLevel());
 		}
-
-		@Override
-		public String toString() {
-
-			return "ValidationOptions{" + "validator=" + validator + ", validationLevel=" + validationLevel
-					+ ", validationAction=" + validationAction + '}';
-		}
-
-		@Override
-		public boolean equals(@Nullable Object o) {
-			if (this == o) {
-				return true;
-			}
-			if (o == null || getClass() != o.getClass()) {
-				return false;
-			}
-
-			ValidationOptions that = (ValidationOptions) o;
-
-			if (!ObjectUtils.nullSafeEquals(validator, that.validator)) {
-				return false;
-			}
-			if (validationLevel != that.validationLevel)
-				return false;
-			return validationAction == that.validationAction;
-		}
-
-		@Override
-		public int hashCode() {
-			int result = ObjectUtils.nullSafeHashCode(validator);
-			result = 31 * result + ObjectUtils.nullSafeHashCode(validationLevel);
-			result = 31 * result + ObjectUtils.nullSafeHashCode(validationAction);
-			return result;
-		}
-	}
-
-	/**
-	 * Encapsulation of options applied to define collections change stream behaviour.
-	 *
-	 * @author Christoph Strobl
-	 * @since 4.0
-	 */
-	public static class CollectionChangeStreamOptions {
-
-		private final boolean preAndPostImages;
-
-		private CollectionChangeStreamOptions(boolean emitChangedRevisions) {
-			this.preAndPostImages = emitChangedRevisions;
-		}
-
-		/**
-		 * Output the version of a document before and after changes (the document pre- and post-images).
-		 *
-		 * @return new instance of {@link CollectionChangeStreamOptions}.
-		 */
-		public static CollectionChangeStreamOptions preAndPostImages(boolean emitChangedRevisions) {
-			return new CollectionChangeStreamOptions(true);
-		}
-
-		public boolean getPreAndPostImages() {
-			return preAndPostImages;
-		}
-
-		@Override
-		public String toString() {
-			return "CollectionChangeStreamOptions{" + "preAndPostImages=" + preAndPostImages + '}';
-		}
-
-		@Override
-		public boolean equals(@Nullable Object o) {
-			if (this == o) {
-				return true;
-			}
-			if (o == null || getClass() != o.getClass()) {
-				return false;
-			}
-
-			CollectionChangeStreamOptions that = (CollectionChangeStreamOptions) o;
-
-			return preAndPostImages == that.preAndPostImages;
-		}
-
-		@Override
-		public int hashCode() {
-			return (preAndPostImages ? 1 : 0);
-		}
-	}
-
-	/**
-	 * Options applicable to Time Series collections.
-	 *
-	 * @author Christoph Strobl
-	 * @since 3.3
-	 * @see <a href=
-	 *      "https://docs.mongodb.com/manual/core/timeseries-collections">https://docs.mongodb.com/manual/core/timeseries-collections</a>
-	 */
-	public static class TimeSeriesOptions {
-
-		private final String timeField;
-
-		private @Nullable final String metaField;
-
-		private final GranularityDefinition granularity;
-
-		private TimeSeriesOptions(String timeField, @Nullable String metaField, GranularityDefinition granularity) {
-
-			Assert.hasText(timeField, "Time field must not be empty or null");
-
-			this.timeField = timeField;
-			this.metaField = metaField;
-			this.granularity = granularity;
-		}
-
-		/**
-		 * Create a new instance of {@link TimeSeriesOptions} using the given field as its {@literal timeField}. The one,
-		 * that contains the date in each time series document. <br />
-		 * {@link Field#name() Annotated fieldnames} will be considered during the mapping process.
-		 *
-		 * @param timeField must not be {@literal null}.
-		 * @return new instance of {@link TimeSeriesOptions}.
-		 */
-		public static TimeSeriesOptions timeSeries(String timeField) {
-			return new TimeSeriesOptions(timeField, null, Granularity.DEFAULT);
-		}
-
-		/**
-		 * Set the name of the field which contains metadata in each time series document. Should not be the {@literal id}
-		 * nor {@link TimeSeriesOptions#timeSeries(String)} timeField} nor point to an {@literal array} or
-		 * {@link java.util.Collection}. <br />
-		 * {@link Field#name() Annotated fieldnames} will be considered during the mapping process.
-		 *
-		 * @param metaField must not be {@literal null}.
-		 * @return new instance of {@link TimeSeriesOptions}.
-		 */
-		public TimeSeriesOptions metaField(String metaField) {
-			return new TimeSeriesOptions(timeField, metaField, granularity);
-		}
-
-		/**
-		 * Select the {@link GranularityDefinition} parameter to define how data in the time series collection is organized.
-		 * Select one that is closest to the time span between incoming measurements.
-		 *
-		 * @return new instance of {@link TimeSeriesOptions}.
-		 * @see Granularity
-		 */
-		public TimeSeriesOptions granularity(GranularityDefinition granularity) {
-			return new TimeSeriesOptions(timeField, metaField, granularity);
-		}
-
-		/**
-		 * @return never {@literal null}.
-		 */
-		public String getTimeField() {
-			return timeField;
-		}
-
-		/**
-		 * @return can be {@literal null}. Might be an {@literal empty} {@link String} as well, so maybe check via
-		 *         {@link org.springframework.util.StringUtils#hasText(String)}.
-		 */
-		@Nullable
-		public String getMetaField() {
-			return metaField;
-		}
-
-		/**
-		 * @return never {@literal null}.
-		 */
-		public GranularityDefinition getGranularity() {
-			return granularity;
-		}
-
-		@Override
-		public String toString() {
-
-			return "TimeSeriesOptions{" + "timeField='" + timeField + '\'' + ", metaField='" + metaField + '\''
-					+ ", granularity=" + granularity + '}';
-		}
-
-		@Override
-		public boolean equals(@Nullable Object o) {
-			if (this == o) {
-				return true;
-			}
-			if (o == null || getClass() != o.getClass()) {
-				return false;
-			}
-
-			TimeSeriesOptions that = (TimeSeriesOptions) o;
-
-			if (!ObjectUtils.nullSafeEquals(timeField, that.timeField)) {
-				return false;
-			}
-			if (!ObjectUtils.nullSafeEquals(metaField, that.metaField)) {
-				return false;
-			}
-			return ObjectUtils.nullSafeEquals(granularity, that.granularity);
-		}
-
-		@Override
-		public int hashCode() {
-			int result = ObjectUtils.nullSafeHashCode(timeField);
-			result = 31 * result + ObjectUtils.nullSafeHashCode(metaField);
-			result = 31 * result + ObjectUtils.nullSafeHashCode(granularity);
-			return result;
-		}
 	}
 }

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/CountQuery.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019-2023 the original author or authors.
+ * Copyright 2019-2021 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.
@@ -23,8 +23,8 @@ import java.util.List;
 import java.util.Map;
 
 import org.bson.Document;
+
 import org.springframework.data.geo.Point;
-import org.springframework.data.mongodb.core.query.MetricConversion;
 import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
 
@@ -38,7 +38,7 @@ import org.springframework.util.ObjectUtils;
  */
 class CountQuery {
 
-	private final Document source;
+	private Document source;
 
 	private CountQuery(Document source) {
 		this.source = source;
@@ -101,7 +101,7 @@ class CountQuery {
 		}
 
 		if (valueToInspect instanceof Collection) {
-			return requiresRewrite((Collection<?>) valueToInspect);
+			return requiresRewrite((Collection) valueToInspect);
 		}
 
 		return false;
@@ -157,14 +157,12 @@ class CountQuery {
 	 * @param $and potentially existing {@code $and} condition.
 	 * @return the rewritten query {@link Document}.
 	 */
-	@SuppressWarnings("unchecked")
 	private static Document createGeoWithin(String key, Document source, @Nullable Object $and) {
 
 		boolean spheric = source.containsKey("$nearSphere");
 		Object $near = spheric ? source.get("$nearSphere") : source.get("$near");
 
-		Number maxDistance = getMaxDistance(source, $near, spheric);
-
+		Number maxDistance = source.containsKey("$maxDistance") ? (Number) source.get("$maxDistance") : Double.MAX_VALUE;
 		List<Object> $centerMax = Arrays.asList(toCenterCoordinates($near), maxDistance);
 		Document $geoWithinMax = new Document("$geoWithin",
 				new Document(spheric ? "$centerSphere" : "$center", $centerMax));
@@ -178,51 +176,23 @@ class CountQuery {
 		Document $geoWithinMin = new Document("$geoWithin",
 				new Document(spheric ? "$centerSphere" : "$center", $centerMin));
 
-		List<Document> criteria;
+		List<Document> criteria = new ArrayList<>();
 
 		if ($and != null) {
 			if ($and instanceof Collection) {
-				Collection<Document> andElements = (Collection<Document>) $and;
-				criteria = new ArrayList<>(andElements.size() + 2);
-				criteria.addAll(andElements);
+				criteria.addAll((Collection) $and);
 			} else {
 				throw new IllegalArgumentException(
-						"Cannot rewrite query as it contains an '$and' element that is not a Collection: Offending element: "
+						"Cannot rewrite query as it contains an '$and' element that is not a Collection!: Offending element: "
 								+ $and);
 			}
-		} else {
-			criteria = new ArrayList<>(2);
 		}
 
 		criteria.add(new Document("$nor", Collections.singletonList(new Document(key, $geoWithinMin))));
 		criteria.add(new Document(key, $geoWithinMax));
-
 		return new Document("$and", criteria);
 	}
 
-	private static Number getMaxDistance(Document source, Object $near, boolean spheric) {
-
-		Number maxDistance = Double.MAX_VALUE;
-
-		if (source.containsKey("$maxDistance")) { // legacy coordinate pair
-			return (Number) source.get("$maxDistance");
-		}
-
-		if ($near instanceof Document nearDoc) {
-
-			if (nearDoc.containsKey("$maxDistance")) {
-
-				maxDistance = (Number) nearDoc.get("$maxDistance");
-				// geojson is in Meters but we need radians x/(6378.1*1000)
-				if (spheric && nearDoc.containsKey("$geometry")) {
-					maxDistance = MetricConversion.metersToRadians(maxDistance.doubleValue());
-				}
-			}
-		}
-
-		return maxDistance;
-	}
-
 	private static boolean containsNear(Document source) {
 		return source.containsKey("$near") || source.containsKey("$nearSphere");
 	}
@@ -246,16 +216,10 @@ class CountQuery {
 			return Arrays.asList(((Point) value).getX(), ((Point) value).getY());
 		}
 
-		if (value instanceof Document document) {
+		if (value instanceof Document && ((Document) value).containsKey("x")) {
 
-			if (document.containsKey("x")) {
-				return Arrays.asList(document.get("x"), document.get("y"));
-			}
-
-			if (document.containsKey("$geometry")) {
-				Document geoJsonPoint = document.get("$geometry", Document.class);
-				return geoJsonPoint.get("coordinates");
-			}
+			Document point = (Document) value;
+			return Arrays.asList(point.get("x"), point.get("y"));
 		}
 
 		return value;

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/CursorPreparer.java

@@ -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.
@@ -61,8 +61,8 @@ public interface CursorPreparer extends ReadPreferenceAware {
 	default FindIterable<Document> initiateFind(MongoCollection<Document> collection,
 			Function<MongoCollection<Document>, FindIterable<Document>> find) {
 
-		Assert.notNull(collection, "Collection must not be null");
-		Assert.notNull(find, "Find function must not be null");
+		Assert.notNull(collection, "Collection must not be null!");
+		Assert.notNull(find, "Find function must not be null!");
 
 		if (hasReadPreference()) {
 			collection = collection.withReadPreference(getReadPreference());

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DbCallback.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2023 the original author or authors.
+ * Copyright 2010-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultBulkOperations.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2023 the original author or authors.
+ * Copyright 2015-2021 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.
@@ -90,9 +90,9 @@ class DefaultBulkOperations implements BulkOperations {
 	DefaultBulkOperations(MongoOperations mongoOperations, String collectionName,
 			BulkOperationContext bulkOperationContext) {
 
-		Assert.notNull(mongoOperations, "MongoOperations must not be null");
-		Assert.hasText(collectionName, "CollectionName must not be null nor empty");
-		Assert.notNull(bulkOperationContext, "BulkOperationContext must not be null");
+		Assert.notNull(mongoOperations, "MongoOperations must not be null!");
+		Assert.hasText(collectionName, "CollectionName must not be null nor empty!");
+		Assert.notNull(bulkOperationContext, "BulkOperationContext must not be null!");
 
 		this.mongoOperations = mongoOperations;
 		this.collectionName = collectionName;
@@ -109,10 +109,14 @@ class DefaultBulkOperations implements BulkOperations {
 		this.defaultWriteConcern = defaultWriteConcern;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#insert(java.lang.Object)
+	 */
 	@Override
 	public BulkOperations insert(Object document) {
 
-		Assert.notNull(document, "Document must not be null");
+		Assert.notNull(document, "Document must not be null!");
 
 		maybeEmitEvent(new BeforeConvertEvent<>(document, collectionName));
 		Object source = maybeInvokeBeforeConvertCallback(document);
@@ -121,30 +125,42 @@ class DefaultBulkOperations implements BulkOperations {
 		return this;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#insert(java.util.List)
+	 */
 	@Override
 	public BulkOperations insert(List<? extends Object> documents) {
 
-		Assert.notNull(documents, "Documents must not be null");
+		Assert.notNull(documents, "Documents must not be null!");
 
 		documents.forEach(this::insert);
 
 		return this;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#updateOne(org.springframework.data.mongodb.core.query.Query, org.springframework.data.mongodb.core.query.Update)
+	 */
 	@Override
 	@SuppressWarnings("unchecked")
 	public BulkOperations updateOne(Query query, Update update) {
 
-		Assert.notNull(query, "Query must not be null");
-		Assert.notNull(update, "Update must not be null");
+		Assert.notNull(query, "Query must not be null!");
+		Assert.notNull(update, "Update must not be null!");
 
 		return updateOne(Collections.singletonList(Pair.of(query, update)));
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#updateOne(java.util.List)
+	 */
 	@Override
 	public BulkOperations updateOne(List<Pair<Query, Update>> updates) {
 
-		Assert.notNull(updates, "Updates must not be null");
+		Assert.notNull(updates, "Updates must not be null!");
 
 		for (Pair<Query, Update> update : updates) {
 			update(update.getFirst(), update.getSecond(), false, false);
@@ -153,20 +169,28 @@ class DefaultBulkOperations implements BulkOperations {
 		return this;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#updateMulti(org.springframework.data.mongodb.core.query.Query, org.springframework.data.mongodb.core.query.Update)
+	 */
 	@Override
 	@SuppressWarnings("unchecked")
 	public BulkOperations updateMulti(Query query, Update update) {
 
-		Assert.notNull(query, "Query must not be null");
-		Assert.notNull(update, "Update must not be null");
+		Assert.notNull(query, "Query must not be null!");
+		Assert.notNull(update, "Update must not be null!");
 
 		return updateMulti(Collections.singletonList(Pair.of(query, update)));
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#updateMulti(java.util.List)
+	 */
 	@Override
 	public BulkOperations updateMulti(List<Pair<Query, Update>> updates) {
 
-		Assert.notNull(updates, "Updates must not be null");
+		Assert.notNull(updates, "Updates must not be null!");
 
 		for (Pair<Query, Update> update : updates) {
 			update(update.getFirst(), update.getSecond(), false, true);
@@ -175,11 +199,19 @@ class DefaultBulkOperations implements BulkOperations {
 		return this;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#upsert(org.springframework.data.mongodb.core.query.Query, org.springframework.data.mongodb.core.query.Update)
+	 */
 	@Override
 	public BulkOperations upsert(Query query, Update update) {
 		return update(query, update, true, true);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#upsert(java.util.List)
+	 */
 	@Override
 	public BulkOperations upsert(List<Pair<Query, Update>> updates) {
 
@@ -190,10 +222,14 @@ class DefaultBulkOperations implements BulkOperations {
 		return this;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#remove(org.springframework.data.mongodb.core.query.Query)
+	 */
 	@Override
 	public BulkOperations remove(Query query) {
 
-		Assert.notNull(query, "Query must not be null");
+		Assert.notNull(query, "Query must not be null!");
 
 		DeleteOptions deleteOptions = new DeleteOptions();
 		query.getCollation().map(Collation::toMongoCollation).ifPresent(deleteOptions::collation);
@@ -203,10 +239,14 @@ class DefaultBulkOperations implements BulkOperations {
 		return this;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#remove(java.util.List)
+	 */
 	@Override
 	public BulkOperations remove(List<Query> removes) {
 
-		Assert.notNull(removes, "Removals must not be null");
+		Assert.notNull(removes, "Removals must not be null!");
 
 		for (Query query : removes) {
 			remove(query);
@@ -215,12 +255,16 @@ class DefaultBulkOperations implements BulkOperations {
 		return this;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#replaceOne(org.springframework.data.mongodb.core.query.Query, java.lang.Object, org.springframework.data.mongodb.core.FindAndReplaceOptions)
+	 */
 	@Override
 	public BulkOperations replaceOne(Query query, Object replacement, FindAndReplaceOptions options) {
 
-		Assert.notNull(query, "Query must not be null");
-		Assert.notNull(replacement, "Replacement must not be null");
-		Assert.notNull(options, "Options must not be null");
+		Assert.notNull(query, "Query must not be null!");
+		Assert.notNull(replacement, "Replacement must not be null!");
+		Assert.notNull(options, "Options must not be null!");
 
 		ReplaceOptions replaceOptions = new ReplaceOptions();
 		replaceOptions.upsert(options.isUpsert());
@@ -234,6 +278,10 @@ class DefaultBulkOperations implements BulkOperations {
 		return this;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.BulkOperations#executeBulk()
+	 */
 	@Override
 	public com.mongodb.bulk.BulkWriteResult execute() {
 
@@ -241,7 +289,7 @@ class DefaultBulkOperations implements BulkOperations {
 
 			com.mongodb.bulk.BulkWriteResult result = mongoOperations.execute(collectionName, this::bulkWriteTo);
 
-			Assert.state(result != null, "Result must not be null");
+			Assert.state(result != null, "Result must not be null.");
 
 			models.forEach(this::maybeEmitAfterSaveEvent);
 			models.forEach(this::maybeInvokeAfterSaveCallback);
@@ -308,8 +356,8 @@ class DefaultBulkOperations implements BulkOperations {
 	 */
 	private BulkOperations update(Query query, Update update, boolean upsert, boolean multi) {
 
-		Assert.notNull(query, "Query must not be null");
-		Assert.notNull(update, "Update must not be null");
+		Assert.notNull(query, "Query must not be null!");
+		Assert.notNull(update, "Update must not be null!");
 
 		UpdateOptions options = computeUpdateOptions(query, update, upsert);
 
@@ -470,7 +518,7 @@ class DefaultBulkOperations implements BulkOperations {
 				return options.ordered(false);
 		}
 
-		throw new IllegalStateException("BulkMode was null");
+		throw new IllegalStateException("BulkMode was null!");
 	}
 
 	/**
@@ -550,7 +598,7 @@ class DefaultBulkOperations implements BulkOperations {
 		}
 
 		@Override
-		public boolean equals(@Nullable Object o) {
+		public boolean equals(Object o) {
 			if (this == o)
 				return true;
 			if (o == null || getClass() != o.getClass())
@@ -619,7 +667,7 @@ class DefaultBulkOperations implements BulkOperations {
 		}
 
 		@Override
-		public boolean equals(@Nullable Object o) {
+		public boolean equals(Object o) {
 			if (this == o)
 				return true;
 			if (o == null || getClass() != o.getClass())

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultIndexOperations.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2023 the original author or authors.
+ * Copyright 2011-2021 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.
@@ -83,9 +83,9 @@ public class DefaultIndexOperations implements IndexOperations {
 	public DefaultIndexOperations(MongoDatabaseFactory mongoDbFactory, String collectionName, QueryMapper queryMapper,
 			@Nullable Class<?> type) {
 
-		Assert.notNull(mongoDbFactory, "MongoDbFactory must not be null");
-		Assert.notNull(collectionName, "Collection name can not be null");
-		Assert.notNull(queryMapper, "QueryMapper must not be null");
+		Assert.notNull(mongoDbFactory, "MongoDbFactory must not be null!");
+		Assert.notNull(collectionName, "Collection name can not be null!");
+		Assert.notNull(queryMapper, "QueryMapper must not be null!");
 
 		this.collectionName = collectionName;
 		this.mapper = queryMapper;
@@ -103,8 +103,8 @@ public class DefaultIndexOperations implements IndexOperations {
 	 */
 	public DefaultIndexOperations(MongoOperations mongoOperations, String collectionName, @Nullable Class<?> type) {
 
-		Assert.notNull(mongoOperations, "MongoOperations must not be null");
-		Assert.hasText(collectionName, "Collection name must not be null or empty");
+		Assert.notNull(mongoOperations, "MongoOperations must not be null!");
+		Assert.hasText(collectionName, "Collection name must not be null or empty!");
 
 		this.mongoOperations = mongoOperations;
 		this.mapper = new QueryMapper(mongoOperations.getConverter());
@@ -112,6 +112,10 @@ public class DefaultIndexOperations implements IndexOperations {
 		this.type = type;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.index.IndexOperations#ensureIndex(org.springframework.data.mongodb.core.index.IndexDefinition)
+	 */
 	public String ensureIndex(final IndexDefinition indexDefinition) {
 
 		return execute(collection -> {
@@ -146,6 +150,10 @@ public class DefaultIndexOperations implements IndexOperations {
 		return null;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.index.IndexOperations#dropIndex(java.lang.String)
+	 */
 	public void dropIndex(final String name) {
 
 		execute(collection -> {
@@ -155,10 +163,18 @@ public class DefaultIndexOperations implements IndexOperations {
 
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.index.IndexOperations#dropAllIndexes()
+	 */
 	public void dropAllIndexes() {
 		dropIndex("*");
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.index.IndexOperations#getIndexInfo()
+	 */
 	public List<IndexInfo> getIndexInfo() {
 
 		return execute(new CollectionCallback<List<IndexInfo>>() {
@@ -172,8 +188,7 @@ public class DefaultIndexOperations implements IndexOperations {
 
 			private List<IndexInfo> getIndexData(MongoCursor<Document> cursor) {
 
-				int available = cursor.available();
-				List<IndexInfo> indexInfoList = available > 0 ? new ArrayList<>(available) : new ArrayList<>();
+				List<IndexInfo> indexInfoList = new ArrayList<>();
 
 				while (cursor.hasNext()) {
 
@@ -190,7 +205,7 @@ public class DefaultIndexOperations implements IndexOperations {
 	@Nullable
 	public <T> T execute(CollectionCallback<T> callback) {
 
-		Assert.notNull(callback, "CollectionCallback must not be null");
+		Assert.notNull(callback, "CollectionCallback must not be null!");
 
 		if (type != null) {
 			return mongoOperations.execute(type, callback);

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultIndexOperationsProvider.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2023 the original author or authors.
+ * Copyright 2016-2021 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.
@@ -42,6 +42,10 @@ class DefaultIndexOperationsProvider implements IndexOperationsProvider {
 		this.mapper = mapper;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.index.IndexOperationsProvider#reactiveIndexOps(java.lang.String)
+	 */
 	@Override
 	public IndexOperations indexOps(String collectionName, Class<?> type) {
 		return new DefaultIndexOperations(mongoDbFactory, collectionName, mapper, type);

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultReactiveIndexOperations.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2023 the original author or authors.
+ * Copyright 2016-2021 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.
@@ -76,9 +76,9 @@ public class DefaultReactiveIndexOperations implements ReactiveIndexOperations {
 	private DefaultReactiveIndexOperations(ReactiveMongoOperations mongoOperations, String collectionName,
 			QueryMapper queryMapper, Optional<Class<?>> type) {
 
-		Assert.notNull(mongoOperations, "ReactiveMongoOperations must not be null");
-		Assert.notNull(collectionName, "Collection must not be null");
-		Assert.notNull(queryMapper, "QueryMapper must not be null");
+		Assert.notNull(mongoOperations, "ReactiveMongoOperations must not be null!");
+		Assert.notNull(collectionName, "Collection must not be null!");
+		Assert.notNull(queryMapper, "QueryMapper must not be null!");
 
 		this.mongoOperations = mongoOperations;
 		this.collectionName = collectionName;
@@ -86,6 +86,10 @@ public class DefaultReactiveIndexOperations implements ReactiveIndexOperations {
 		this.type = type;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.index.ReactiveIndexOperations#ensureIndex(org.springframework.data.mongodb.core.index.IndexDefinition)
+	 */
 	public Mono<String> ensureIndex(final IndexDefinition indexDefinition) {
 
 		return mongoOperations.execute(collectionName, collection -> {
@@ -115,14 +119,26 @@ public class DefaultReactiveIndexOperations implements ReactiveIndexOperations {
 				.orElse(null);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.index.ReactiveIndexOperations#dropIndex(java.lang.String)
+	 */
 	public Mono<Void> dropIndex(final String name) {
 		return mongoOperations.execute(collectionName, collection -> collection.dropIndex(name)).then();
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.index.ReactiveIndexOperations#dropAllIndexes()
+	 */
 	public Mono<Void> dropAllIndexes() {
 		return dropIndex("*");
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.index.ReactiveIndexOperations#getIndexInfo()
+	 */
 	public Flux<IndexInfo> getIndexInfo() {
 
 		return mongoOperations.execute(collectionName, collection -> collection.listIndexes(Document.class)) //

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultScriptOperations.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2023 the original author or authors.
+ * Copyright 2014-2021 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.
@@ -31,6 +31,7 @@ import org.bson.types.ObjectId;
 import org.springframework.dao.DataAccessException;
 import org.springframework.data.mongodb.core.script.ExecutableMongoScript;
 import org.springframework.data.mongodb.core.script.NamedMongoScript;
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.CollectionUtils;
 import org.springframework.util.ObjectUtils;
@@ -64,29 +65,41 @@ class DefaultScriptOperations implements ScriptOperations {
 	 */
 	public DefaultScriptOperations(MongoOperations mongoOperations) {
 
-		Assert.notNull(mongoOperations, "MongoOperations must not be null");
+		Assert.notNull(mongoOperations, "MongoOperations must not be null!");
 
 		this.mongoOperations = mongoOperations;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.ScriptOperations#register(org.springframework.data.mongodb.core.script.ExecutableMongoScript)
+	 */
 	@Override
 	public NamedMongoScript register(ExecutableMongoScript script) {
 		return register(new NamedMongoScript(generateScriptName(), script));
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.ScriptOperations#register(org.springframework.data.mongodb.core.script.NamedMongoScript)
+	 */
 	@Override
 	public NamedMongoScript register(NamedMongoScript script) {
 
-		Assert.notNull(script, "Script must not be null");
+		Assert.notNull(script, "Script must not be null!");
 
 		mongoOperations.save(script, SCRIPT_COLLECTION_NAME);
 		return script;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.ScriptOperations#execute(org.springframework.data.mongodb.core.script.ExecutableMongoScript, java.lang.Object[])
+	 */
 	@Override
 	public Object execute(final ExecutableMongoScript script, final Object... args) {
 
-		Assert.notNull(script, "Script must not be null");
+		Assert.notNull(script, "Script must not be null!");
 
 		return mongoOperations.execute(new DbCallback<Object>() {
 
@@ -102,10 +115,14 @@ class DefaultScriptOperations implements ScriptOperations {
 		});
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.ScriptOperations#call(java.lang.String, java.lang.Object[])
+	 */
 	@Override
 	public Object call(final String scriptName, final Object... args) {
 
-		Assert.hasText(scriptName, "ScriptName must not be null or empty");
+		Assert.hasText(scriptName, "ScriptName must not be null or empty!");
 
 		return mongoOperations.execute(new DbCallback<Object>() {
 
@@ -118,14 +135,22 @@ class DefaultScriptOperations implements ScriptOperations {
 		});
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.ScriptOperations#exists(java.lang.String)
+	 */
 	@Override
 	public boolean exists(String scriptName) {
 
-		Assert.hasText(scriptName, "ScriptName must not be null or empty");
+		Assert.hasText(scriptName, "ScriptName must not be null or empty!");
 
 		return mongoOperations.exists(query(where("_id").is(scriptName)), NamedMongoScript.class, SCRIPT_COLLECTION_NAME);
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.ScriptOperations#getScriptNames()
+	 */
 	@Override
 	public Set<String> getScriptNames() {
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultWriteConcernResolver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2023 the original author or authors.
+ * Copyright 2015-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DocumentCallbackHandler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2023 the original author or authors.
+ * Copyright 2010-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/EntityLifecycleEventDelegate.java

@@ -1,60 +0,0 @@
-/*
- * Copyright 2022-2023 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.springframework.data.mongodb.core;
-
-import org.springframework.context.ApplicationEventPublisher;
-import org.springframework.lang.Nullable;
-
-/**
- * Delegate class to encapsulate lifecycle event configuration and publishing.
- *
- * @author Mark Paluch
- * @since 4.0
- * @see ApplicationEventPublisher
- */
-class EntityLifecycleEventDelegate {
-
-	private @Nullable ApplicationEventPublisher publisher;
-	private boolean eventsEnabled = true;
-
-	public void setPublisher(@Nullable ApplicationEventPublisher publisher) {
-		this.publisher = publisher;
-	}
-
-	public boolean isEventsEnabled() {
-		return eventsEnabled;
-	}
-
-	public void setEventsEnabled(boolean eventsEnabled) {
-		this.eventsEnabled = eventsEnabled;
-	}
-
-	/**
-	 * Publish an application event if event publishing is enabled.
-	 *
-	 * @param event the application event.
-	 */
-	public void publishEvent(Object event) {
-
-		if (canPublishEvent()) {
-			publisher.publishEvent(event);
-		}
-	}
-
-	private boolean canPublishEvent() {
-		return publisher != null && eventsEnabled;
-	}
-}

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/EntityOperations.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2023 the original author or authors.
+ * Copyright 2018-2021 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.
@@ -23,43 +23,25 @@ import java.util.Optional;
 import org.bson.Document;
 import org.springframework.core.convert.ConversionService;
 import org.springframework.dao.InvalidDataAccessApiUsageException;
-import org.springframework.data.convert.CustomConversions;
 import org.springframework.data.mapping.IdentifierAccessor;
 import org.springframework.data.mapping.MappingException;
 import org.springframework.data.mapping.PersistentEntity;
 import org.springframework.data.mapping.PersistentPropertyAccessor;
 import org.springframework.data.mapping.context.MappingContext;
 import org.springframework.data.mapping.model.ConvertingPropertyAccessor;
-import org.springframework.data.mongodb.core.CollectionOptions.TimeSeriesOptions;
-import org.springframework.data.mongodb.core.convert.MongoConverter;
-import org.springframework.data.mongodb.core.convert.MongoJsonSchemaMapper;
 import org.springframework.data.mongodb.core.convert.MongoWriter;
-import org.springframework.data.mongodb.core.convert.QueryMapper;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentEntity;
 import org.springframework.data.mongodb.core.mapping.MongoPersistentProperty;
 import org.springframework.data.mongodb.core.mapping.MongoSimpleTypes;
-import org.springframework.data.mongodb.core.mapping.TimeSeries;
 import org.springframework.data.mongodb.core.query.Collation;
 import org.springframework.data.mongodb.core.query.Criteria;
 import org.springframework.data.mongodb.core.query.Query;
-import org.springframework.data.mongodb.core.timeseries.Granularity;
-import org.springframework.data.mongodb.core.validation.Validator;
-import org.springframework.data.projection.EntityProjection;
-import org.springframework.data.projection.EntityProjectionIntrospector;
-import org.springframework.data.projection.ProjectionFactory;
-import org.springframework.data.util.Optionals;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ClassUtils;
 import org.springframework.util.LinkedMultiValueMap;
 import org.springframework.util.MultiValueMap;
 import org.springframework.util.ObjectUtils;
-import org.springframework.util.StringUtils;
-
-import com.mongodb.client.model.ChangeStreamPreAndPostImagesOptions;
-import com.mongodb.client.model.CreateCollectionOptions;
-import com.mongodb.client.model.TimeSeriesGranularity;
-import com.mongodb.client.model.ValidationOptions;
 
 /**
  * Common operations performed on an entity in the context of it's mapping metadata.
@@ -76,31 +58,9 @@ class EntityOperations {
 	private static final String ID_FIELD = "_id";
 
 	private final MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> context;
-	private final QueryMapper queryMapper;
 
-	private final EntityProjectionIntrospector introspector;
-
-	private final MongoJsonSchemaMapper schemaMapper;
-
-	EntityOperations(MongoConverter converter) {
-		this(converter, new QueryMapper(converter));
-	}
-
-	EntityOperations(MongoConverter converter, QueryMapper queryMapper) {
-		this(converter, converter.getMappingContext(), converter.getCustomConversions(), converter.getProjectionFactory(),
-				queryMapper);
-	}
-
-	EntityOperations(MongoConverter converter,
-			MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> context,
-			CustomConversions conversions, ProjectionFactory projectionFactory, QueryMapper queryMapper) {
+	EntityOperations(MappingContext<? extends MongoPersistentEntity<?>, MongoPersistentProperty> context) {
 		this.context = context;
-		this.queryMapper = queryMapper;
-		this.introspector = EntityProjectionIntrospector.create(projectionFactory,
-				EntityProjectionIntrospector.ProjectionPredicate.typeHierarchy()
-						.and(((target, underlyingType) -> !conversions.isSimpleType(target))),
-				context);
-		this.schemaMapper = new MongoJsonSchemaMapper(converter);
 	}
 
 	/**
@@ -112,7 +72,7 @@ class EntityOperations {
 	@SuppressWarnings({ "unchecked", "rawtypes" })
 	<T> Entity<T> forEntity(T entity) {
 
-		Assert.notNull(entity, "Bean must not be null");
+		Assert.notNull(entity, "Bean must not be null!");
 
 		if (entity instanceof String) {
 			return new UnmappedEntity(parse(entity.toString()));
@@ -135,8 +95,8 @@ class EntityOperations {
 	@SuppressWarnings({ "unchecked", "rawtypes" })
 	<T> AdaptibleEntity<T> forEntity(T entity, ConversionService conversionService) {
 
-		Assert.notNull(entity, "Bean must not be null");
-		Assert.notNull(conversionService, "ConversionService must not be null");
+		Assert.notNull(entity, "Bean must not be null!");
+		Assert.notNull(conversionService, "ConversionService must not be null!");
 
 		if (entity instanceof String) {
 			return new UnmappedEntity(parse(entity.toString()));
@@ -171,17 +131,10 @@ class EntityOperations {
 
 		if (entityClass == null) {
 			throw new InvalidDataAccessApiUsageException(
-					"No class parameter provided, entity collection can't be determined");
+					"No class parameter provided, entity collection can't be determined!");
 		}
 
-		MongoPersistentEntity<?> persistentEntity = context.getPersistentEntity(entityClass);
-
-		if (persistentEntity == null) {
-			throw new MappingException(String.format(
-					"Cannot determine collection name from type '%s'. Is it a store native type?", entityClass.getName()));
-		}
-
-		return persistentEntity.getCollection();
+		return context.getRequiredPersistentEntity(entityClass).getCollection();
 	}
 
 	public Query getByIdInQuery(Collection<?> entities) {
@@ -208,7 +161,7 @@ class EntityOperations {
 	 */
 	public String getIdPropertyName(Class<?> type) {
 
-		Assert.notNull(type, "Type must not be null");
+		Assert.notNull(type, "Type must not be null!");
 
 		MongoPersistentEntity<?> persistentEntity = context.getPersistentEntity(type);
 
@@ -247,12 +200,12 @@ class EntityOperations {
 		try {
 			return Document.parse(source);
 		} catch (org.bson.json.JsonParseException o_O) {
-			throw new MappingException("Could not parse given String to save into a JSON document", o_O);
+			throw new MappingException("Could not parse given String to save into a JSON document!", o_O);
 		} catch (RuntimeException o_O) {
 
 			// legacy 3.x exception
 			if (ClassUtils.matchesTypeName(o_O.getClass(), "JSONParseException")) {
-				throw new MappingException("Could not parse given String to save into a JSON document", o_O);
+				throw new MappingException("Could not parse given String to save into a JSON document!", o_O);
 			}
 			throw o_O;
 		}
@@ -272,96 +225,6 @@ class EntityOperations {
 		return UntypedOperations.instance();
 	}
 
-	/**
-	 * Introspect the given {@link Class result type} in the context of the {@link Class entity type} whether the returned
-	 * type is a projection and what property paths are participating in the projection.
-	 *
-	 * @param resultType the type to project on. Must not be {@literal null}.
-	 * @param entityType the source domain type. Must not be {@literal null}.
-	 * @return the introspection result.
-	 * @since 3.4
-	 * @see EntityProjectionIntrospector#introspect(Class, Class)
-	 */
-	public <M, D> EntityProjection<M, D> introspectProjection(Class<M> resultType, Class<D> entityType) {
-
-		if (!queryMapper.getMappingContext().hasPersistentEntityFor(entityType)) {
-			return (EntityProjection) EntityProjection.nonProjecting(resultType);
-		}
-		return introspector.introspect(resultType, entityType);
-	}
-
-	/**
-	 * Convert {@link CollectionOptions} to {@link CreateCollectionOptions} using {@link Class entityType} to obtain
-	 * mapping metadata.
-	 *
-	 * @param collectionOptions
-	 * @param entityType
-	 * @return
-	 * @since 3.4
-	 */
-	public CreateCollectionOptions convertToCreateCollectionOptions(@Nullable CollectionOptions collectionOptions,
-			Class<?> entityType) {
-
-		Optional<Collation> collation = Optionals.firstNonEmpty(
-				() -> Optional.ofNullable(collectionOptions).flatMap(CollectionOptions::getCollation),
-				() -> forType(entityType).getCollation());//
-
-		CreateCollectionOptions result = new CreateCollectionOptions();
-		collation.map(Collation::toMongoCollation).ifPresent(result::collation);
-
-		if (collectionOptions == null) {
-			return result;
-		}
-
-		collectionOptions.getCapped().ifPresent(result::capped);
-		collectionOptions.getSize().ifPresent(result::sizeInBytes);
-		collectionOptions.getMaxDocuments().ifPresent(result::maxDocuments);
-		collectionOptions.getCollation().map(Collation::toMongoCollation).ifPresent(result::collation);
-
-		collectionOptions.getValidationOptions().ifPresent(it -> {
-
-			ValidationOptions validationOptions = new ValidationOptions();
-
-			it.getValidationAction().ifPresent(validationOptions::validationAction);
-			it.getValidationLevel().ifPresent(validationOptions::validationLevel);
-
-			it.getValidator().ifPresent(val -> validationOptions.validator(getMappedValidator(val, entityType)));
-
-			result.validationOptions(validationOptions);
-		});
-
-		collectionOptions.getTimeSeriesOptions().map(forType(entityType)::mapTimeSeriesOptions).ifPresent(it -> {
-
-			com.mongodb.client.model.TimeSeriesOptions options = new com.mongodb.client.model.TimeSeriesOptions(
-					it.getTimeField());
-
-			if (StringUtils.hasText(it.getMetaField())) {
-				options.metaField(it.getMetaField());
-			}
-			if (!Granularity.DEFAULT.equals(it.getGranularity())) {
-				options.granularity(TimeSeriesGranularity.valueOf(it.getGranularity().name().toUpperCase()));
-			}
-
-			result.timeSeriesOptions(options);
-		});
-
-		collectionOptions.getChangeStreamOptions().ifPresent(it -> result
-				.changeStreamPreAndPostImagesOptions(new ChangeStreamPreAndPostImagesOptions(it.getPreAndPostImages())));
-
-		return result;
-	}
-
-	private Document getMappedValidator(Validator validator, Class<?> domainType) {
-
-		Document validationRules = validator.toDocument();
-
-		if (validationRules.containsKey("$jsonSchema")) {
-			return schemaMapper.mapSchema(validationRules, domainType);
-		}
-
-		return queryMapper.getMappedObject(validationRules, context.getPersistentEntity(domainType));
-	}
-
 	/**
 	 * A representation of information about an entity.
 	 *
@@ -506,21 +369,37 @@ class EntityOperations {
 			this.map = map;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getIdPropertyName()
+		 */
 		@Override
 		public String getIdFieldName() {
 			return ID_FIELD;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getId()
+		 */
 		@Override
 		public Object getId() {
 			return map.get(ID_FIELD);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getByIdQuery()
+		 */
 		@Override
 		public Query getByIdQuery() {
 			return Query.query(Criteria.where(ID_FIELD).is(map.get(ID_FIELD)));
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.MutablePersistableSource#populateIdIfNecessary(java.lang.Object)
+		 */
 		@Nullable
 		@Override
 		public T populateIdIfNecessary(@Nullable Object id) {
@@ -530,11 +409,19 @@ class EntityOperations {
 			return map;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getQueryForVersion()
+		 */
 		@Override
 		public Query getQueryForVersion() {
-			throw new MappingException("Cannot query for version on plain Documents");
+			throw new MappingException("Cannot query for version on plain Documents!");
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#toMappedDocument(org.springframework.data.mongodb.core.convert.MongoWriter)
+		 */
 		@Override
 		public MappedDocument toMappedDocument(MongoWriter<? super T> writer) {
 			return MappedDocument.of(map instanceof Document //
@@ -542,27 +429,47 @@ class EntityOperations {
 					: new Document(map));
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.MutablePersistableSource#initializeVersionProperty()
+		 */
 		@Override
 		public T initializeVersionProperty() {
 			return map;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.MutablePersistableSource#getVersion()
+		 */
 		@Override
 		@Nullable
 		public Number getVersion() {
 			return null;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.MutablePersistableSource#incrementVersion()
+		 */
 		@Override
 		public T incrementVersion() {
 			return map;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getBean()
+		 */
 		@Override
 		public T getBean() {
 			return map;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.Entity#isNew()
+		 */
 		@Override
 		public boolean isNew() {
 			return map.get(ID_FIELD) != null;
@@ -575,6 +482,10 @@ class EntityOperations {
 			super(map);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#toMappedDocument(org.springframework.data.mongodb.core.convert.MongoWriter)
+		 */
 		@Override
 		@SuppressWarnings("unchecked")
 		public MappedDocument toMappedDocument(MongoWriter<? super T> writer) {
@@ -614,21 +525,33 @@ class EntityOperations {
 			return new MappedEntity<>(entity, identifierAccessor, propertyAccessor);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getIdPropertyName()
+		 */
 		@Override
 		public String getIdFieldName() {
 			return entity.getRequiredIdProperty().getFieldName();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getId()
+		 */
 		@Override
 		public Object getId() {
 			return idAccessor.getRequiredIdentifier();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getByIdQuery()
+		 */
 		@Override
 		public Query getByIdQuery() {
 
 			if (!entity.hasIdProperty()) {
-				throw new MappingException("No id property found for object of type " + entity.getType());
+				throw new MappingException("No id property found for object of type " + entity.getType() + "!");
 			}
 
 			MongoPersistentProperty idProperty = entity.getRequiredIdProperty();
@@ -636,6 +559,10 @@ class EntityOperations {
 			return Query.query(Criteria.where(idProperty.getName()).is(getId()));
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getQueryForVersion(java.lang.Object)
+		 */
 		@Override
 		public Query getQueryForVersion() {
 
@@ -646,6 +573,10 @@ class EntityOperations {
 					.and(versionProperty.getName()).is(getVersion()));
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#toMappedDocument(org.springframework.data.mongodb.core.convert.MongoWriter)
+		 */
 		@Override
 		public MappedDocument toMappedDocument(MongoWriter<? super T> writer) {
 
@@ -661,6 +592,10 @@ class EntityOperations {
 			return MappedDocument.of(document);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.Entity#assertUpdateableIdIfNotSet()
+		 */
 		public void assertUpdateableIdIfNotSet() {
 
 			if (!entity.hasIdProperty()) {
@@ -676,27 +611,43 @@ class EntityOperations {
 
 			if (!MongoSimpleTypes.AUTOGENERATED_ID_TYPES.contains(property.getType())) {
 				throw new InvalidDataAccessApiUsageException(
-						String.format("Cannot autogenerate id of type %s for entity of type %s", property.getType().getName(),
+						String.format("Cannot autogenerate id of type %s for entity of type %s!", property.getType().getName(),
 								entity.getType().getName()));
 			}
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#isVersionedEntity()
+		 */
 		@Override
 		public boolean isVersionedEntity() {
 			return entity.hasVersionProperty();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getVersion()
+		 */
 		@Override
 		@Nullable
 		public Object getVersion() {
 			return propertyAccessor.getProperty(entity.getRequiredVersionProperty());
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.PersistableSource#getBean()
+		 */
 		@Override
 		public T getBean() {
 			return propertyAccessor.getBean();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.Entity#isNew()
+		 */
 		@Override
 		public boolean isNew() {
 			return entity.isNew(propertyAccessor.getBean());
@@ -731,6 +682,10 @@ class EntityOperations {
 					new ConvertingPropertyAccessor<>(propertyAccessor, conversionService));
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.AdaptibleEntity#populateIdIfNecessary(java.lang.Object)
+		 */
 		@Nullable
 		@Override
 		public T populateIdIfNecessary(@Nullable Object id) {
@@ -752,6 +707,10 @@ class EntityOperations {
 			return propertyAccessor.getBean();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.MappedEntity#getVersion()
+		 */
 		@Override
 		@Nullable
 		public Number getVersion() {
@@ -761,6 +720,10 @@ class EntityOperations {
 			return propertyAccessor.getProperty(versionProperty, Number.class);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.AdaptibleEntity#initializeVersionProperty()
+		 */
 		@Override
 		public T initializeVersionProperty() {
 
@@ -775,6 +738,10 @@ class EntityOperations {
 			return propertyAccessor.getBean();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.AdaptibleEntity#incrementVersion()
+		 */
 		@Override
 		public T incrementVersion() {
 
@@ -811,24 +778,6 @@ class EntityOperations {
 		 * @return
 		 */
 		Optional<Collation> getCollation(Query query);
-
-		/**
-		 * Derive the applicable {@link CollectionOptions} for the given type.
-		 *
-		 * @return never {@literal null}.
-		 * @since 3.3
-		 */
-		CollectionOptions getCollectionOptions();
-
-		/**
-		 * Map the fields of a given {@link TimeSeriesOptions} against the target domain type to consider potentially
-		 * annotated field names.
-		 *
-		 * @param options must not be {@literal null}.
-		 * @return never {@literal null}.
-		 * @since 3.3
-		 */
-		TimeSeriesOptions mapTimeSeriesOptions(TimeSeriesOptions options);
 	}
 
 	/**
@@ -846,11 +795,19 @@ class EntityOperations {
 			return (TypedOperations) INSTANCE;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.TypedOperations#getCollation()
+		 */
 		@Override
 		public Optional<Collation> getCollation() {
 			return Optional.empty();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.TypedOperations#getCollation(org.springframework.data.mongodb.core.query.Query)
+		 */
 		@Override
 		public Optional<Collation> getCollation(Query query) {
 
@@ -860,16 +817,6 @@ class EntityOperations {
 
 			return query.getCollation();
 		}
-
-		@Override
-		public CollectionOptions getCollectionOptions() {
-			return CollectionOptions.empty();
-		}
-
-		@Override
-		public TimeSeriesOptions mapTimeSeriesOptions(TimeSeriesOptions options) {
-			return options;
-		}
 	}
 
 	/**
@@ -885,11 +832,19 @@ class EntityOperations {
 			this.entity = entity;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.TypedOperations#getCollation()
+		 */
 		@Override
 		public Optional<Collation> getCollation() {
 			return Optional.ofNullable(entity.getCollation());
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.EntityOperations.TypedOperations#getCollation(org.springframework.data.mongodb.core.query.Query)
+		 */
 		@Override
 		public Optional<Collation> getCollation(Query query) {
 
@@ -899,58 +854,6 @@ class EntityOperations {
 
 			return Optional.ofNullable(entity.getCollation());
 		}
-
-		@Override
-		public CollectionOptions getCollectionOptions() {
-
-			CollectionOptions collectionOptions = CollectionOptions.empty();
-			if (entity.hasCollation()) {
-				collectionOptions = collectionOptions.collation(entity.getCollation());
-			}
-
-			if (entity.isAnnotationPresent(TimeSeries.class)) {
-
-				TimeSeries timeSeries = entity.getRequiredAnnotation(TimeSeries.class);
-
-				if (entity.getPersistentProperty(timeSeries.timeField()) == null) {
-					throw new MappingException(String.format("Time series field '%s' does not exist in type %s",
-							timeSeries.timeField(), entity.getName()));
-				}
-
-				TimeSeriesOptions options = TimeSeriesOptions.timeSeries(timeSeries.timeField());
-				if (StringUtils.hasText(timeSeries.metaField())) {
-
-					if (entity.getPersistentProperty(timeSeries.metaField()) == null) {
-						throw new MappingException(
-								String.format("Meta field '%s' does not exist in type %s", timeSeries.metaField(), entity.getName()));
-					}
-
-					options = options.metaField(timeSeries.metaField());
-				}
-				if (!Granularity.DEFAULT.equals(timeSeries.granularity())) {
-					options = options.granularity(timeSeries.granularity());
-				}
-				collectionOptions = collectionOptions.timeSeries(options);
-			}
-
-			return collectionOptions;
-		}
-
-		@Override
-		public TimeSeriesOptions mapTimeSeriesOptions(TimeSeriesOptions source) {
-
-			TimeSeriesOptions target = TimeSeriesOptions.timeSeries(mappedNameOrDefault(source.getTimeField()));
-
-			if (StringUtils.hasText(source.getMetaField())) {
-				target = target.metaField(mappedNameOrDefault(source.getMetaField()));
-			}
-			return target.granularity(source.getGranularity());
-		}
-
-		private String mappedNameOrDefault(String name) {
-			MongoPersistentProperty persistentProperty = entity.getPersistentProperty(name);
-			return persistentProperty != null ? persistentProperty.getFieldName() : name;
-		}
 	}
 
 }

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableAggregationOperation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.
@@ -15,10 +15,9 @@
  */
 package org.springframework.data.mongodb.core;
 
-import java.util.stream.Stream;
-
 import org.springframework.data.mongodb.core.aggregation.Aggregation;
 import org.springframework.data.mongodb.core.aggregation.AggregationResults;
+import org.springframework.data.util.CloseableIterator;
 
 /**
  * {@link ExecutableAggregationOperation} allows creation and execution of MongoDB aggregation operations in a fluent
@@ -89,12 +88,12 @@ public interface ExecutableAggregationOperation {
 
 		/**
 		 * Apply pipeline operations as specified and stream all matching elements. <br />
-		 * Returns a {@link Stream} that wraps the Mongo DB {@link com.mongodb.client.FindIterable}
+		 * Returns a {@link CloseableIterator} that wraps the a Mongo DB {@link com.mongodb.client.FindIterable}
 		 *
-		 * @return the result {@link Stream}, containing mapped objects, needing to be closed once fully processed (e.g.
-		 *         through a try-with-resources clause).
+		 * @return a {@link CloseableIterator} that wraps the a Mongo DB {@link com.mongodb.client.FindIterable} that needs to be closed.
+		 *         Never {@literal null}.
 		 */
-		Stream<T> stream();
+		CloseableIterator<T> stream();
 	}
 
 	/**

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableAggregationOperationSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.
@@ -15,11 +15,10 @@
  */
 package org.springframework.data.mongodb.core;
 
-import java.util.stream.Stream;
-
 import org.springframework.data.mongodb.core.aggregation.Aggregation;
 import org.springframework.data.mongodb.core.aggregation.AggregationResults;
 import org.springframework.data.mongodb.core.aggregation.TypedAggregation;
+import org.springframework.data.util.CloseableIterator;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 
@@ -38,10 +37,14 @@ class ExecutableAggregationOperationSupport implements ExecutableAggregationOper
 		this.template = template;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.ExecutableAggregationOperation#aggregateAndReturn(java.lang.Class)
+	 */
 	@Override
 	public <T> ExecutableAggregation<T> aggregateAndReturn(Class<T> domainType) {
 
-		Assert.notNull(domainType, "DomainType must not be null");
+		Assert.notNull(domainType, "DomainType must not be null!");
 
 		return new ExecutableAggregationSupport<>(template, domainType, null, null);
 	}
@@ -66,29 +69,45 @@ class ExecutableAggregationOperationSupport implements ExecutableAggregationOper
 			this.collection = collection;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableAggregationOperation.AggregationWithCollection#inCollection(java.lang.String)
+		 */
 		@Override
 		public AggregationWithAggregation<T> inCollection(String collection) {
 
-			Assert.hasText(collection, "Collection must not be null nor empty");
+			Assert.hasText(collection, "Collection must not be null nor empty!");
 
 			return new ExecutableAggregationSupport<>(template, domainType, aggregation, collection);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableAggregationOperation.AggregationWithAggregation#by(org.springframework.data.mongodb.core.aggregation.Aggregation)
+		 */
 		@Override
 		public TerminatingAggregation<T> by(Aggregation aggregation) {
 
-			Assert.notNull(aggregation, "Aggregation must not be null");
+			Assert.notNull(aggregation, "Aggregation must not be null!");
 
 			return new ExecutableAggregationSupport<>(template, domainType, aggregation, collection);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableAggregationOperation.TerminatingAggregation#all()
+		 */
 		@Override
 		public AggregationResults<T> all() {
 			return template.aggregate(aggregation, getCollectionName(aggregation), domainType);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableAggregationOperation.TerminatingAggregation#stream()
+		 */
 		@Override
-		public Stream<T> stream() {
+		public CloseableIterator<T> stream() {
 			return template.aggregateStream(aggregation, getCollectionName(aggregation), domainType);
 		}
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableFindOperation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.
@@ -118,14 +118,14 @@ public interface ExecutableFindOperation {
 		/**
 		 * Stream all matching elements.
 		 *
-		 * @return the result {@link Stream}, containing mapped objects, needing to be closed once fully processed (e.g.
-		 *         through a try-with-resources clause).
+		 * @return a {@link Stream} that wraps the a Mongo DB {@link com.mongodb.client.FindIterable} that needs to be closed. Never
+		 *         {@literal null}.
 		 */
 		Stream<T> stream();
 
 		/**
 		 * Get the number of matching elements.
-		 * <br />
+		 * <p />
 		 * This method uses an {@link com.mongodb.client.MongoCollection#countDocuments(org.bson.conversions.Bson, com.mongodb.client.model.CountOptions) aggregation
 		 * execution} even for empty {@link Query queries} which may have an impact on performance, but guarantees shard,
 		 * session and transaction compliance. In case an inaccurate count satisfies the applications needs use

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableFindOperationSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.
@@ -20,11 +20,12 @@ import java.util.Optional;
 import java.util.stream.Stream;
 
 import org.bson.Document;
-
 import org.springframework.dao.IncorrectResultSizeDataAccessException;
 import org.springframework.data.mongodb.core.query.NearQuery;
 import org.springframework.data.mongodb.core.query.Query;
 import org.springframework.data.mongodb.core.query.SerializationUtils;
+import org.springframework.data.util.CloseableIterator;
+import org.springframework.data.util.StreamUtils;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
@@ -50,10 +51,14 @@ class ExecutableFindOperationSupport implements ExecutableFindOperation {
 		this.template = template;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.core.ExecutableFindOperation#query(java.lang.Class)
+	 */
 	@Override
 	public <T> ExecutableFind<T> query(Class<T> domainType) {
 
-		Assert.notNull(domainType, "DomainType must not be null");
+		Assert.notNull(domainType, "DomainType must not be null!");
 
 		return new ExecutableFindSupport<>(template, domainType, domainType, null, ALL_QUERY);
 	}
@@ -69,11 +74,11 @@ class ExecutableFindOperationSupport implements ExecutableFindOperation {
 		private final MongoTemplate template;
 		private final Class<?> domainType;
 		private final Class<T> returnType;
-		private final @Nullable String collection;
+		@Nullable private final String collection;
 		private final Query query;
 
 		ExecutableFindSupport(MongoTemplate template, Class<?> domainType, Class<T> returnType,
-				@Nullable String collection, Query query) {
+				String collection, Query query) {
 			this.template = template;
 			this.domainType = domainType;
 			this.returnType = returnType;
@@ -81,30 +86,46 @@ class ExecutableFindOperationSupport implements ExecutableFindOperation {
 			this.query = query;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.FindWithCollection#inCollection(java.lang.String)
+		 */
 		@Override
 		public FindWithProjection<T> inCollection(String collection) {
 
-			Assert.hasText(collection, "Collection name must not be null nor empty");
+			Assert.hasText(collection, "Collection name must not be null nor empty!");
 
 			return new ExecutableFindSupport<>(template, domainType, returnType, collection, query);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.FindWithProjection#as(Class)
+		 */
 		@Override
 		public <T1> FindWithQuery<T1> as(Class<T1> returnType) {
 
-			Assert.notNull(returnType, "ReturnType must not be null");
+			Assert.notNull(returnType, "ReturnType must not be null!");
 
 			return new ExecutableFindSupport<>(template, domainType, returnType, collection, query);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.FindWithQuery#matching(org.springframework.data.mongodb.core.query.Query)
+		 */
 		@Override
 		public TerminatingFind<T> matching(Query query) {
 
-			Assert.notNull(query, "Query must not be null");
+			Assert.notNull(query, "Query must not be null!");
 
 			return new ExecutableFindSupport<>(template, domainType, returnType, collection, query);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.TerminatingFind#oneValue()
+		 */
 		@Override
 		public T oneValue() {
 
@@ -115,12 +136,16 @@ class ExecutableFindOperationSupport implements ExecutableFindOperation {
 			}
 
 			if (result.size() > 1) {
-				throw new IncorrectResultSizeDataAccessException("Query " + asString() + " returned non unique result", 1);
+				throw new IncorrectResultSizeDataAccessException("Query " + asString() + " returned non unique result.", 1);
 			}
 
 			return result.iterator().next();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.TerminatingFind#firstValue()
+		 */
 		@Override
 		public T firstValue() {
 
@@ -129,36 +154,60 @@ class ExecutableFindOperationSupport implements ExecutableFindOperation {
 			return ObjectUtils.isEmpty(result) ? null : result.iterator().next();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.TerminatingFind#all()
+		 */
 		@Override
 		public List<T> all() {
 			return doFind(null);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.TerminatingFind#stream()
+		 */
 		@Override
 		public Stream<T> stream() {
-			return doStream();
+			return StreamUtils.createStreamFromIterator(doStream());
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.FindWithQuery#near(org.springframework.data.mongodb.core.query.NearQuery)
+		 */
 		@Override
 		public TerminatingFindNear<T> near(NearQuery nearQuery) {
 			return () -> template.geoNear(nearQuery, domainType, getCollectionName(), returnType);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.TerminatingFind#count()
+		 */
 		@Override
 		public long count() {
 			return template.count(query, domainType, getCollectionName());
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.TerminatingFind#exists()
+		 */
 		@Override
 		public boolean exists() {
 			return template.exists(query, domainType, getCollectionName());
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.FindDistinct#distinct(java.lang.String)
+		 */
 		@SuppressWarnings("unchecked")
 		@Override
 		public TerminatingDistinct<Object> distinct(String field) {
 
-			Assert.notNull(field, "Field must not be null");
+			Assert.notNull(field, "Field must not be null!");
 
 			return new DistinctOperationSupport(this, field);
 		}
@@ -178,7 +227,7 @@ class ExecutableFindOperationSupport implements ExecutableFindOperation {
 					returnType == domainType ? (Class<T>) Object.class : returnType);
 		}
 
-		private Stream<T> doStream() {
+		private CloseableIterator<T> doStream() {
 			return template.doStream(query, domainType, getCollectionName(), returnType);
 		}
 
@@ -208,6 +257,10 @@ class ExecutableFindOperationSupport implements ExecutableFindOperation {
 			this.delegate = delegate;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.CursorPreparer#prepare(com.mongodb.clientFindIterable)
+		 */
 		@Override
 		public FindIterable<Document> prepare(FindIterable<Document> iterable) {
 
@@ -242,23 +295,35 @@ class ExecutableFindOperationSupport implements ExecutableFindOperation {
 			this.field = field;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.DistinctWithProjection#as(java.lang.Class)
+		 */
 		@Override
 		@SuppressWarnings("unchecked")
 		public <R> TerminatingDistinct<R> as(Class<R> resultType) {
 
-			Assert.notNull(resultType, "ResultType must not be null");
+			Assert.notNull(resultType, "ResultType must not be null!");
 
 			return new DistinctOperationSupport<>((ExecutableFindSupport) delegate.as(resultType), field);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.DistinctWithQuery#matching(org.springframework.data.mongodb.core.query.Query)
+		 */
 		@Override
 		public TerminatingDistinct<T> matching(Query query) {
 
-			Assert.notNull(query, "Query must not be null");
+			Assert.notNull(query, "Query must not be null!");
 
 			return new DistinctOperationSupport<>((ExecutableFindSupport<T>) delegate.matching(query), field);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableFindOperation.TerminatingDistinct#all()
+		 */
 		@Override
 		public List<T> all() {
 			return delegate.doFindDistinct(field);

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableInsertOperation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableInsertOperationSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2023 the original author or authors.
+ * Copyright 2017-2021 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.
@@ -40,10 +40,14 @@ class ExecutableInsertOperationSupport implements ExecutableInsertOperation {
 		this.template = template;
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.mongodb.coreExecutableInsertOperation#insert(java.lan.Class)
+	 */
 	@Override
 	public <T> ExecutableInsert<T> insert(Class<T> domainType) {
 
-		Assert.notNull(domainType, "DomainType must not be null");
+		Assert.notNull(domainType, "DomainType must not be null!");
 
 		return new ExecutableInsertSupport<>(template, domainType, null, null);
 	}
@@ -67,43 +71,63 @@ class ExecutableInsertOperationSupport implements ExecutableInsertOperation {
 			this.bulkMode = bulkMode;
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableInsertOperation.TerminatingInsert#insert(java.lang.Class)
+		 */
 		@Override
 		public T one(T object) {
 
-			Assert.notNull(object, "Object must not be null");
+			Assert.notNull(object, "Object must not be null!");
 
 			return template.insert(object, getCollectionName());
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableInsertOperation.TerminatingInsert#all(java.util.Collection)
+		 */
 		@Override
 		public Collection<T> all(Collection<? extends T> objects) {
 
-			Assert.notNull(objects, "Objects must not be null");
+			Assert.notNull(objects, "Objects must not be null!");
 
 			return template.insert(objects, getCollectionName());
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableInsertOperation.TerminatingBulkInsert#bulk(java.util.Collection)
+		 */
 		@Override
 		public BulkWriteResult bulk(Collection<? extends T> objects) {
 
-			Assert.notNull(objects, "Objects must not be null");
+			Assert.notNull(objects, "Objects must not be null!");
 
 			return template.bulkOps(bulkMode != null ? bulkMode : BulkMode.ORDERED, domainType, getCollectionName())
 					.insert(new ArrayList<>(objects)).execute();
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableInsertOperation.InsertWithCollection#inCollection(java.lang.String)
+		 */
 		@Override
 		public InsertWithBulkMode<T> inCollection(String collection) {
 
-			Assert.hasText(collection, "Collection must not be null nor empty");
+			Assert.hasText(collection, "Collection must not be null nor empty.");
 
 			return new ExecutableInsertSupport<>(template, domainType, collection, bulkMode);
 		}
 
+		/*
+		 * (non-Javadoc)
+		 * @see org.springframework.data.mongodb.core.ExecutableInsertOperation.InsertWithBulkMode#withBulkMode(org.springframework.data.mongodb.core.BulkMode)
+		 */
 		@Override
 		public TerminatingBulkInsert<T> withBulkMode(BulkMode bulkMode) {
 
-			Assert.notNull(bulkMode, "BulkMode must not be null");
+			Assert.notNull(bulkMode, "BulkMode must not be null!");
 
 			return new ExecutableInsertSupport<>(template, domainType, collection, bulkMode);
 		}