Authenticate with artifactory.

See #3616.
Updated changelog.
2021-04-22 15:06:46 -05:00 · 2021-03-31 18:30:45 +02:00 · 2021-03-31 17:26:05 +02:00 · 2021-03-17 11:31:29 +01:00 · 2021-03-17 11:03:40 +01:00 · 2021-03-17 10:35:13 +01:00
911 changed files with 5256 additions and 2511 deletions
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,38 +0,0 @@
-language: java
-
-jdk:
-  - oraclejdk8
-
-before_install:
-  - mkdir -p downloads
-  - mkdir -p var/db var/log
-  - if [[ ! -d downloads/mongodb-linux-x86_64-ubuntu1604-${MONGO_VERSION} ]] ; then cd downloads && wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-ubuntu1604-${MONGO_VERSION}.tgz && tar xzf mongodb-linux-x86_64-ubuntu1604-${MONGO_VERSION}.tgz && cd ..; fi
-  - downloads/mongodb-linux-x86_64-ubuntu1604-${MONGO_VERSION}/bin/mongod --version
-  - downloads/mongodb-linux-x86_64-ubuntu1604-${MONGO_VERSION}/bin/mongod --dbpath var/db --replSet rs0 --fork --logpath var/log/mongod.log
-  - sleep 10
-  - |-
-    downloads/mongodb-linux-x86_64-ubuntu1604-${MONGO_VERSION}/bin/mongo --eval "rs.initiate({_id: 'rs0', members:[{_id: 0, host: '127.0.0.1:27017'}]});"
-    sleep 15
-
-env:
-  matrix:
-    - MONGO_VERSION=4.1.10
-    - MONGO_VERSION=4.0.4
-    - MONGO_VERSION=3.6.12
-    - MONGO_VERSION=3.4.20
-  global:
-    - PROFILE=ci
-
-addons:
-  apt:
-    packages:
-      - oracle-java8-installer
-
-sudo: false
-
-cache:
-  directories:
-    - $HOME/.m2
-    - downloads
-
-script: "mvn clean dependency:list test -P${PROFILE} -Dsort"
--- a/29
+++ b/29
@@ -3,7 +3,7 @@ pipeline {

 	triggers {
 		pollSCM 'H/10 * * * *'
-		upstream(upstreamProjects: "spring-data-commons/master", threshold: hudson.model.Result.SUCCESS)
+		upstream(upstreamProjects: "spring-data-commons/2.2.x", threshold: hudson.model.Result.SUCCESS)
 	}

 	options {
@@ -68,7 +68,7 @@ pipeline {
 		stage("test: baseline") {
 			when {
 				anyOf {
-					branch 'master'
+					branch '2.2.x'
 					not { triggeredBy 'UpstreamCause' }
 				}
 			}
@@ -80,6 +80,9 @@ pipeline {
 				}
 			}
 			options { timeout(time: 30, unit: 'MINUTES') }
+			environment {
+				ARTIFACTORY = credentials('02bd1690-b54f-4c9f-819d-a77cb7a9822c')
+			}
 			steps {
 				sh 'rm -rf ?'
 				sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
@@ -87,14 +90,14 @@ pipeline {
 				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 clean dependency:list test -Dsort -U -B'
+				sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml clean dependency:list test -Dsort -U -B'
 			}
 		}

 		stage("Test other configurations") {
 			when {
 				anyOf {
-					branch 'master'
+					branch '2.2.x'
 					not { triggeredBy 'UpstreamCause' }
 				}
 			}
@@ -108,6 +111,9 @@ pipeline {
 						}
 					}
 					options { timeout(time: 30, unit: 'MINUTES') }
+					environment {
+						ARTIFACTORY = credentials('02bd1690-b54f-4c9f-819d-a77cb7a9822c')
+					}
 					steps {
 						sh 'rm -rf ?'
 						sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
@@ -115,7 +121,7 @@ pipeline {
 						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 clean dependency:list test -Dsort -U -B'
+						sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml clean dependency:list test -Dsort -U -B'
 					}
 				}
 				stage("test: mongodb 4.1") {
@@ -127,6 +133,9 @@ pipeline {
 						}
 					}
 					options { timeout(time: 30, unit: 'MINUTES') }
+					environment {
+						ARTIFACTORY = credentials('02bd1690-b54f-4c9f-819d-a77cb7a9822c')
+					}
 					steps {
 						sh 'rm -rf ?'
 						sh 'mkdir -p /tmp/mongodb/db /tmp/mongodb/log'
@@ -134,7 +143,7 @@ pipeline {
 						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 clean dependency:list test -Dsort -U -B'
+						sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -s settings.xml clean dependency:list test -Dsort -U -B'
 					}
 				}
 			}
@@ -143,7 +152,7 @@ pipeline {
 		stage('Release to artifactory') {
 			when {
 				anyOf {
-					branch 'master'
+					branch '2.2.x'
 					not { triggeredBy 'UpstreamCause' }
 				}
 			}
@@ -162,7 +171,7 @@ pipeline {

 			steps {
 				sh 'rm -rf ?'
-				sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -Pci,artifactory ' +
+				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} " +
@@ -175,7 +184,7 @@ pipeline {

 		stage('Publish documentation') {
 			when {
-				branch 'master'
+				branch '2.2.x'
 			}
 			agent {
 				docker {
@@ -191,7 +200,7 @@ pipeline {
 			}

 			steps {
-				sh 'MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" ./mvnw -Pci,distribute ' +
+				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} " +
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -0,0 +1,202 @@
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--- a/README.adoc
+++ b/README.adoc
@@ -105,18 +105,17 @@ If you are just starting out with Spring, try one of the https://spring.io/guide
 * If you are upgrading, check out the https://docs.spring.io/spring-data/mongodb/docs/current/changelog.txt[changelog] for "`new and noteworthy`" features.
 * Ask a question - we monitor https://stackoverflow.com[stackoverflow.com] for questions tagged with https://stackoverflow.com/tags/spring-data[`spring-data-mongodb`].
 You can also chat with the community on https://gitter.im/spring-projects/spring-data[Gitter].
-* Report bugs with Spring Data MongoDB at https://jira.spring.io/browse/DATAMONGO[jira.spring.io/browse/DATAMONGO].
+* 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

-Spring Data uses JIRA as issue tracking system to record bugs and feature requests. If you want to raise an issue, please follow the recommendations below:
+Spring Data uses Github as issue tracking system to record bugs and feature requests.
+If you want to raise an issue, please follow the recommendations below:

-* Before you log a bug, please search the
-https://jira.spring.io/browse/DATAMONGO[issue tracker] to see if someone has already reported the problem.
-* If the issue doesn’t already exist, https://jira.spring.io/browse/DATAMONGO[create a new issue].
-* Please provide as much information as possible with the issue report, we like to know the version of Spring Data that you are using and JVM version.
-* If you need to paste code, or include a stack trace use JIRA `{code}…{code}` escapes before and after your text.
-* If possible try to create a test-case or project that replicates the issue. Attach a link to your code or a compressed file containing your code.
+* Before you log a bug, please search the https://github.com/spring-projects/spring-data-mongodb/issues[issue tracker] to see if someone has already reported the problem.
+* If the issue does not already exist, https://github.com/spring-projects/spring-data-mongodb/issues/new[create a new issue].
+* 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 +++```+++.

 == Building from Source

--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@

 	<groupId>org.springframework.data</groupId>
 	<artifactId>spring-data-mongodb-parent</artifactId>
-	<version>2.2.0.RELEASE</version>
+	<version>2.2.14.BUILD-SNAPSHOT</version>
 	<packaging>pom</packaging>

 	<name>Spring Data MongoDB</name>
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.data.build</groupId>
 		<artifactId>spring-data-parent</artifactId>
-		<version>2.2.0.RELEASE</version>
+		<version>2.2.14.BUILD-SNAPSHOT</version>
 	</parent>

 	<modules>
@@ -26,8 +26,8 @@
 	<properties>
 		<project.type>multi</project.type>
 		<dist.id>spring-data-mongodb</dist.id>
-		<springdata.commons>2.2.0.RELEASE</springdata.commons>
-		<mongo>3.11.0</mongo>
+		<springdata.commons>2.2.14.BUILD-SNAPSHOT</springdata.commons>
+		<mongo>3.11.2</mongo>
 		<mongo.reactivestreams>1.12.0</mongo.reactivestreams>
 		<jmh.version>1.19</jmh.version>
 	</properties>
@@ -134,8 +134,8 @@

 	<repositories>
 		<repository>
-			<id>spring-libs-release</id>
-			<url>https://repo.spring.io/libs-release</url>
+			<id>spring-libs-snapshot</id>
+			<url>https://repo.spring.io/libs-snapshot</url>
 		</repository>
 	</repositories>

@@ -148,7 +148,6 @@
 			<id>spring-libs-milestone</id>
 			<url>https://repo.spring.io/libs-milestone</url>
 		</pluginRepository>
-
 	</pluginRepositories>

 </project>
--- a/settings.xml
+++ b/settings.xml
@@ -0,0 +1,29 @@
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
+                      https://maven.apache.org/xsd/settings-1.0.0.xsd">
+
+	<servers>
+		<server>
+			<id>spring-plugins-release</id>
+			<username>${env.ARTIFACTORY_USR}</username>
+			<password>${env.ARTIFACTORY_PSW}</password>
+		</server>
+		<server>
+			<id>spring-libs-snapshot</id>
+			<username>${env.ARTIFACTORY_USR}</username>
+			<password>${env.ARTIFACTORY_PSW}</password>
+		</server>
+		<server>
+			<id>spring-libs-milestone</id>
+			<username>${env.ARTIFACTORY_USR}</username>
+			<password>${env.ARTIFACTORY_PSW}</password>
+		</server>
+		<server>
+			<id>spring-libs-release</id>
+			<username>${env.ARTIFACTORY_USR}</username>
+			<password>${env.ARTIFACTORY_PSW}</password>
+		</server>
+	</servers>
+
+</settings>
--- a/spring-data-mongodb-benchmarks/pom.xml
+++ b/spring-data-mongodb-benchmarks/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>2.2.0.RELEASE</version>
+		<version>2.2.14.BUILD-SNAPSHOT</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>

--- a/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/core/ProjectionsBenchmark.java
+++ b/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/core/ProjectionsBenchmark.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/core/convert/DbRefMappingBenchmark.java
+++ b/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/core/convert/DbRefMappingBenchmark.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/core/convert/MappingMongoConverterBenchmark.java
+++ b/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/core/convert/MappingMongoConverterBenchmark.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/AbstractMicrobenchmark.java
+++ b/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/AbstractMicrobenchmark.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/HttpResultsWriter.java
+++ b/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/HttpResultsWriter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/MongoResultsWriter.java
+++ b/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/MongoResultsWriter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/ResultsWriter.java
+++ b/spring-data-mongodb-benchmarks/src/main/java/org/springframework/data/mongodb/microbenchmark/ResultsWriter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb-distribution/pom.xml
+++ b/spring-data-mongodb-distribution/pom.xml
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>2.2.0.RELEASE</version>
+		<version>2.2.14.BUILD-SNAPSHOT</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>

--- a/spring-data-mongodb/pom.xml
+++ b/spring-data-mongodb/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>2.2.0.RELEASE</version>
+		<version>2.2.14.BUILD-SNAPSHOT</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>

--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/BulkOperationException.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/BulkOperationException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ClientSessionException.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ClientSessionException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/CodecRegistryProvider.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/CodecRegistryProvider.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/InvalidMongoDbApiUsageException.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/InvalidMongoDbApiUsageException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/LazyLoadingException.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/LazyLoadingException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 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.
@@ -25,8 +25,10 @@ public class LazyLoadingException extends UncategorizedDataAccessException {
 	private static final long serialVersionUID = -7089224903873220037L;

 	/**
-	 * @param msg
-	 * @param cause
+	 * Constructor for LazyLoadingException.
+	 *
+	 * @param msg the detail message.
+	 * @param cause the exception thrown by underlying data access API.
 	 */
 	public LazyLoadingException(String msg, Throwable cause) {
 		super(msg, cause);
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoCollectionUtils.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoCollectionUtils.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDatabaseUtils.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDatabaseUtils.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
@@ -79,7 +79,7 @@ public class MongoDatabaseUtils {
 	 * @param factory the {@link MongoDbFactory} to get the {@link MongoDatabase} from.
 	 * @return the {@link MongoDatabase} that is potentially associated with a transactional {@link ClientSession}.
 	 */
-	public static MongoDatabase getDatabase(String dbName, MongoDbFactory factory) {
+	public static MongoDatabase getDatabase(@Nullable String dbName, MongoDbFactory factory) {
 		return doGetMongoDatabase(dbName, factory, SessionSynchronization.ON_ACTUAL_TRANSACTION);
 	}

@@ -88,13 +88,13 @@ public class MongoDatabaseUtils {
 	 * <p />
 	 * Registers a {@link MongoSessionSynchronization MongoDB specific transaction synchronization} within the current
 	 * {@link Thread} if {@link TransactionSynchronizationManager#isSynchronizationActive() synchronization is active}.
-	 * 
+	 *
 	 * @param dbName the name of the {@link MongoDatabase} to get.
 	 * @param factory the {@link MongoDbFactory} to get the {@link MongoDatabase} from.
 	 * @param sessionSynchronization the synchronization to use. Must not be {@literal null}.
 	 * @return the {@link MongoDatabase} that is potentially associated with a transactional {@link ClientSession}.
 	 */
-	public static MongoDatabase getDatabase(String dbName, MongoDbFactory factory,
+	public static MongoDatabase getDatabase(@Nullable String dbName, MongoDbFactory factory,
 			SessionSynchronization sessionSynchronization) {
 		return doGetMongoDatabase(dbName, factory, sessionSynchronization);
 	}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDbFactory.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoDbFactory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
@@ -37,7 +37,7 @@ public interface MongoDbFactory extends CodecRegistryProvider, MongoSessionProvi
 	/**
 	 * Creates a default {@link MongoDatabase} instance.
 	 *
-	 * @return
+	 * @return never {@literal null}.
 	 * @throws DataAccessException
 	 */
 	MongoDatabase getDb() throws DataAccessException;
@@ -46,7 +46,7 @@ public interface MongoDbFactory extends CodecRegistryProvider, MongoSessionProvi
 	 * Creates a {@link DB} instance to access the database with the given name.
 	 *
 	 * @param dbName must not be {@literal null} or empty.
-	 * @return
+	 * @return never {@literal null}.
 	 * @throws DataAccessException
 	 */
 	MongoDatabase getDb(String dbName) throws DataAccessException;
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoResourceHolder.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoResourceHolder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoSessionProvider.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoSessionProvider.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoTransactionException.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoTransactionException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoTransactionManager.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoTransactionManager.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoDatabaseFactory.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoDatabaseFactory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2019 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.
@@ -38,7 +38,7 @@ public interface ReactiveMongoDatabaseFactory extends CodecRegistryProvider {
 	/**
 	 * Creates a default {@link MongoDatabase} instance.
 	 *
-	 * @return
+	 * @return never {@literal null}.
 	 * @throws DataAccessException
 	 */
 	MongoDatabase getMongoDatabase() throws DataAccessException;
@@ -47,7 +47,7 @@ public interface ReactiveMongoDatabaseFactory extends CodecRegistryProvider {
 	 * Creates a {@link MongoDatabase} instance to access the database with the given name.
 	 *
 	 * @param dbName must not be {@literal null} or empty.
-	 * @return
+	 * @return never {@literal null}.
 	 * @throws DataAccessException
 	 */
 	MongoDatabase getMongoDatabase(String dbName) throws DataAccessException;
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoDatabaseUtils.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoDatabaseUtils.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoResourceHolder.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoResourceHolder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoTransactionManager.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/ReactiveMongoTransactionManager.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 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.
@@ -110,7 +110,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		this.options = options;
 	}

-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doGetTransaction(org.springframework.transaction.reactive.TransactionSynchronizationManager)
 	 */
@@ -123,7 +123,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		return new ReactiveMongoTransactionObject(resourceHolder);
 	}

-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#isExistingTransaction(java.lang.Object)
 	 */
@@ -132,7 +132,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		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)
 	 */
@@ -175,7 +175,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		});
 	}

-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doSuspend(org.springframework.transaction.reactive.TransactionSynchronizationManager, java.lang.Object)
 	 */
@@ -192,7 +192,7 @@ 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)
 	 */
@@ -203,7 +203,7 @@ 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)
 	 */
@@ -243,7 +243,7 @@ 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)
 	 */
@@ -268,7 +268,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		});
 	}

-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doSetRollbackOnly(org.springframework.transaction.reactive.TransactionSynchronizationManager, org.springframework.transaction.reactive.GenericReactiveTransaction)
 	 */
@@ -282,7 +282,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 		});
 	}

-	/* 
+	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.transaction.reactive.AbstractReactiveTransactionManager#doCleanupAfterCompletion(org.springframework.transaction.reactive.TransactionSynchronizationManager, java.lang.Object)
 	 */
@@ -509,7 +509,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 			return session;
 		}

-		/* 
+		/*
 		 * (non-Javadoc)
 		 * @see org.springframework.transaction.support.SmartTransactionObject#isRollbackOnly()
 		 */
@@ -518,7 +518,7 @@ public class ReactiveMongoTransactionManager extends AbstractReactiveTransaction
 			return this.resourceHolder != null && this.resourceHolder.isRollbackOnly();
 		}

-		/* 
+		/*
 		 * (non-Javadoc)
 		 * @see org.springframework.transaction.support.SmartTransactionObject#flush()
 		 */
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/SessionAwareMethodInterceptor.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/SessionAwareMethodInterceptor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/SessionSynchronization.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/SessionSynchronization.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/UncategorizedMongoDbException.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/UncategorizedMongoDbException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/AbstractMongoClientConfiguration.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/AbstractMongoClientConfiguration.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/AbstractMongoConfiguration.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/AbstractMongoConfiguration.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/AbstractReactiveMongoConfiguration.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/AbstractReactiveMongoConfiguration.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/BeanNames.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/BeanNames.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/EnableMongoAuditing.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/EnableMongoAuditing.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 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.
@@ -42,21 +42,21 @@ public @interface EnableMongoAuditing {
 	/**
 	 * Configures the {@link AuditorAware} bean to be used to lookup the current principal.
 	 *
-	 * @return
+	 * @return empty {@link String} by default.
 	 */
 	String auditorAwareRef() default "";

 	/**
 	 * Configures whether the creation and modification dates are set. Defaults to {@literal true}.
 	 *
-	 * @return
+	 * @return {@literal true} by default.
 	 */
 	boolean setDates() default true;

 	/**
 	 * Configures whether the entity shall be marked as modified on creation. Defaults to {@literal true}.
 	 *
-	 * @return
+	 * @return {@literal true} by default.
 	 */
 	boolean modifyOnCreate() default true;

@@ -64,7 +64,7 @@ public @interface EnableMongoAuditing {
 	 * Configures a {@link DateTimeProvider} bean name that allows customizing the {@link org.joda.time.DateTime} to be
 	 * used for setting creation and modification dates.
 	 *
-	 * @return
+	 * @return empty {@link String} by default.
 	 */
 	String dateTimeProviderRef() default "";
 }
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/GeoJsonConfiguration.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/GeoJsonConfiguration.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/GridFsTemplateParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/GridFsTemplateParser.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MappingMongoConverterParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MappingMongoConverterParser.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoAuditingBeanDefinitionParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoAuditingBeanDefinitionParser.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoAuditingRegistrar.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoAuditingRegistrar.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoClientParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoClientParser.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoConfigurationSupport.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoConfigurationSupport.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2019 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.
@@ -89,7 +89,7 @@ public abstract class MongoConfigurationSupport {
 	/**
 	 * Register custom {@link Converter}s in a {@link CustomConversions} object if required. These
 	 * {@link CustomConversions} will be registered with the {@link #mappingMongoConverter()} and
-	 * {@link #mongoMappingContext()}. Returns an empty {@link MongoCustomConversions} instance by default.
+	 * {@link MongoMappingContext}. Returns an empty {@link MongoCustomConversions} instance by default.
 	 *
 	 * @return must not be {@literal null}.
 	 */
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoCredentialPropertyEditor.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoCredentialPropertyEditor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoDbFactoryParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoDbFactoryParser.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoJmxParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoJmxParser.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoNamespaceHandler.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoNamespaceHandler.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoParsingUtils.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoParsingUtils.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoTemplateParser.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/MongoTemplateParser.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ReadPreferencePropertyEditor.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ReadPreferencePropertyEditor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ServerAddressPropertyEditor.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/ServerAddressPropertyEditor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/StringToWriteConcernConverter.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/StringToWriteConcernConverter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/WriteConcernPropertyEditor.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/config/WriteConcernPropertyEditor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/AggregationUtil.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/AggregationUtil.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/BulkOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/BulkOperations.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 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.
@@ -94,7 +94,6 @@ public interface BulkOperations {
 	 * Add a list of updates to the bulk operation. For each update request, all matching documents are updated.
 	 *
 	 * @param updates Update operations to perform.
-	 * @return The bulk operation.
 	 * @return the current {@link BulkOperations} instance with the update added, will never be {@literal null}.
 	 */
 	BulkOperations updateMulti(List<Pair<Query, Update>> updates);
@@ -105,7 +104,6 @@ public interface BulkOperations {
 	 *
 	 * @param query Update criteria.
 	 * @param update Update operation to perform.
-	 * @return The bulk operation.
 	 * @return the current {@link BulkOperations} instance with the update added, will never be {@literal null}.
 	 */
 	BulkOperations upsert(Query query, Update update);
@@ -115,7 +113,6 @@ public interface BulkOperations {
 	 * else an insert.
 	 *
 	 * @param updates Updates/insert operations to perform.
-	 * @return The bulk operation.
 	 * @return the current {@link BulkOperations} instance with the update added, will never be {@literal null}.
 	 */
 	BulkOperations upsert(List<Pair<Query, Update>> updates);
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ChangeStreamEvent.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ChangeStreamEvent.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ChangeStreamOptions.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ChangeStreamOptions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/CollectionCallback.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/CollectionCallback.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 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.
@@ -29,7 +29,7 @@ import com.mongodb.client.MongoCollection;
 * @author Grame Rocher
 * @author Oliver Gierke
 * @author John Brisbin
- * @auhtor Christoph Strobl
+ * @author Christoph Strobl
 * @since 1.0
 */
 public interface CollectionCallback<T> {
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/CollectionOptions.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/CollectionOptions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 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.
@@ -95,7 +95,7 @@ public class CollectionOptions {

 	/**
 	 * Create new {@link CollectionOptions} with already given settings and capped set to {@literal true}. <br />
-	 * <strong>NOTE</strong> Using capped collections requires defining {@link #size(int)}.
+	 * <strong>NOTE</strong> Using capped collections requires defining {@link #size(long)}.
 	 *
 	 * @return new {@link CollectionOptions}.
 	 * @since 2.0
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/CursorPreparer.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/CursorPreparer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 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.
@@ -43,9 +43,10 @@ public interface CursorPreparer extends ReadPreferenceAware {
 	/**
 	 * Prepare the given cursor (apply limits, skips and so on). Returns the prepared cursor.
 	 *
-	 * @param cursor
+	 * @param iterable must not be {@literal null}.
+	 * @return never {@literal null}.
 	 */
-	FindIterable<Document> prepare(FindIterable<Document> cursor);
+	FindIterable<Document> prepare(FindIterable<Document> iterable);

 	/**
 	 * Apply query specific settings to {@link MongoCollection} and initate a find operation returning a
@@ -53,7 +54,7 @@ public interface CursorPreparer extends ReadPreferenceAware {
 	 *
 	 * @param collection must not be {@literal null}.
 	 * @param find must not be {@literal null}.
-	 * @return
+	 * @return never {@literal null}.
 	 * @throws IllegalArgumentException if one of the required arguments is {@literal null}.
 	 * @since 2.2
 	 */
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DbCallback.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DbCallback.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultBulkOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultBulkOperations.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 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.
@@ -15,6 +15,9 @@
 */
 package org.springframework.data.mongodb.core;

+import lombok.NonNull;
+import lombok.Value;
+
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -38,6 +41,8 @@ import org.springframework.data.mongodb.core.mapping.event.MongoMappingEvent;
 import org.springframework.data.mongodb.core.query.Collation;
 import org.springframework.data.mongodb.core.query.Query;
 import org.springframework.data.mongodb.core.query.Update;
+import org.springframework.data.mongodb.core.query.UpdateDefinition;
+import org.springframework.data.mongodb.core.query.UpdateDefinition.ArrayFilter;
 import org.springframework.data.util.Pair;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
@@ -47,9 +52,6 @@ import com.mongodb.bulk.BulkWriteResult;
 import com.mongodb.client.MongoCollection;
 import com.mongodb.client.model.*;

-import lombok.NonNull;
-import lombok.Value;
-
 /**
 * Default implementation for {@link BulkOperations}.
 *
@@ -349,9 +351,7 @@ class DefaultBulkOperations implements BulkOperations {
 		Assert.notNull(query, "Query must not be null!");
 		Assert.notNull(update, "Update must not be null!");

-		UpdateOptions options = new UpdateOptions();
-		options.upsert(upsert);
-		query.getCollation().map(Collation::toMongoCollation).ifPresent(options::collation);
+		UpdateOptions options = computeUpdateOptions(query, update, upsert);

 		if (multi) {
 			addModel(update, new UpdateManyModel<>(query.getQueryObject(), update.getUpdateObject(), options));
@@ -489,6 +489,29 @@ class DefaultBulkOperations implements BulkOperations {
 		throw new IllegalStateException("BulkMode was null!");
 	}

+	/**
+	 * @param filterQuery The {@link Query} to read a potential {@link Collation} from. Must not be {@literal null}.
+	 * @param update The {@link Update} to apply
+	 * @param upsert flag to indicate if document should be upserted.
+	 * @return new instance of {@link UpdateOptions}.
+	 */
+	private static UpdateOptions computeUpdateOptions(Query filterQuery, UpdateDefinition update, boolean upsert) {
+
+		UpdateOptions options = new UpdateOptions();
+		options.upsert(upsert);
+
+		if (update.hasArrayFilters()) {
+			List<Document> list = new ArrayList<>(update.getArrayFilters().size());
+			for (ArrayFilter arrayFilter : update.getArrayFilters()) {
+				list.add(arrayFilter.asDocument());
+			}
+			options.arrayFilters(list);
+		}
+
+		filterQuery.getCollation().map(Collation::toMongoCollation).ifPresent(options::collation);
+		return options;
+	}
+
 	/**
 	 * {@link BulkOperationContext} holds information about
 	 * {@link org.springframework.data.mongodb.core.BulkOperations.BulkMode} the entity in use as well as references to
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultIndexOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultIndexOperations.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
@@ -127,7 +127,7 @@ public class DefaultIndexOperations implements IndexOperations {
 			indexOptions = addPartialFilterIfPresent(indexOptions, indexDefinition.getIndexOptions(), entity);
 			indexOptions = addDefaultCollationIfRequired(indexOptions, entity);

-			Document mappedKeys = mapper.getMappedObject(indexDefinition.getIndexKeys(), entity);
+			Document mappedKeys = mapper.getMappedSort(indexDefinition.getIndexKeys(), entity);
 			return collection.createIndex(mappedKeys, indexOptions);
 		});
 	}
@@ -223,7 +223,7 @@ public class DefaultIndexOperations implements IndexOperations {

 		Assert.isInstanceOf(Document.class, sourceOptions.get(PARTIAL_FILTER_EXPRESSION_KEY));
 		return ops.partialFilterExpression(
-				mapper.getMappedObject((Document) sourceOptions.get(PARTIAL_FILTER_EXPRESSION_KEY), entity));
+				mapper.getMappedSort((Document) sourceOptions.get(PARTIAL_FILTER_EXPRESSION_KEY), entity));
 	}

 	private static IndexOptions addDefaultCollationIfRequired(IndexOptions ops, MongoPersistentEntity<?> entity) {
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultIndexOperationsProvider.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultIndexOperationsProvider.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultReactiveIndexOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultReactiveIndexOperations.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultScriptOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultScriptOperations.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultWriteConcernResolver.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DefaultWriteConcernResolver.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DocumentCallbackHandler.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/DocumentCallbackHandler.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 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.
@@ -23,7 +23,7 @@ import com.mongodb.MongoException;
 /**
 * An interface used by {@link MongoTemplate} for processing documents returned from a MongoDB query on a per-document
 * basis. Implementations of this interface perform the actual work of prcoessing each document but don't need to worry
- * about exception handling. {@MongoException}s will be caught and translated by the calling MongoTemplate An
+ * about exception handling. {@link MongoException}s will be caught and translated by the calling MongoTemplate An
 * DocumentCallbackHandler is typically stateful: It keeps the result state within the object, to be available later for
 * later inspection.
 *
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/EntityOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/EntityOperations.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
@@ -66,7 +66,7 @@ class EntityOperations {
 	 * Creates a new {@link Entity} for the given bean.
 	 *
 	 * @param entity must not be {@literal null}.
-	 * @return
+	 * @return new instance of {@link Entity}.
 	 */
 	@SuppressWarnings({ "unchecked", "rawtypes" })
 	public <T> Entity<T> forEntity(T entity) {
@@ -89,7 +89,7 @@ class EntityOperations {
 	 *
 	 * @param entity must not be {@literal null}.
 	 * @param conversionService must not be {@literal null}.
-	 * @return
+	 * @return new instance of {@link AdaptibleEntity}.
 	 */
 	@SuppressWarnings({ "unchecked", "rawtypes" })
 	public <T> AdaptibleEntity<T> forEntity(T entity, ConversionService conversionService) {
@@ -108,6 +108,10 @@ class EntityOperations {
 		return AdaptibleMappedEntity.of(entity, context, conversionService);
 	}

+	/**
+	 * @param entityClass should not be null.
+	 * @return the {@link MongoPersistentEntity#getCollection() collection name}.
+	 */
 	public String determineCollectionName(@Nullable Class<?> entityClass) {

 		if (entityClass == null) {
@@ -138,7 +142,7 @@ class EntityOperations {
 	 * {@code _id} if no identifier property can be found.
 	 *
 	 * @param type must not be {@literal null}.
-	 * @return
+	 * @return never {@literal null}.
 	 */
 	public String getIdPropertyName(Class<?> type) {

--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableAggregationOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableAggregationOperation.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
@@ -88,10 +88,10 @@ public interface ExecutableAggregationOperation {

 		/**
 		 * Apply pipeline operations as specified and stream all matching elements. <br />
-		 * Returns a {@link CloseableIterator} that wraps the a Mongo DB {@link com.mongodb.Cursor}
+		 * Returns a {@link CloseableIterator} that wraps the a Mongo DB {@link com.mongodb.client.FindIterable}
 		 *
-		 * @return a {@link CloseableIterator} that wraps the a Mongo DB {@link com.mongodb.Cursor} that needs to be closed.
-		 *         Never {@literal null}.
+		 * @return a {@link CloseableIterator} that wraps the a Mongo DB {@link com.mongodb.client.FindIterable} that needs
+		 *         to be closed. Never {@literal null}.
 		 */
 		CloseableIterator<T> stream();
 	}
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableAggregationOperationSupport.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableAggregationOperationSupport.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableFindOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableFindOperation.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
@@ -117,8 +117,8 @@ public interface ExecutableFindOperation {
 		/**
 		 * Stream all matching elements.
 		 *
-		 * @return a {@link Stream} that wraps the a Mongo DB {@link com.mongodb.Cursor} that needs to be closed. Never
-		 *         {@literal null}.
+		 * @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();

--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableFindOperationSupport.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableFindOperationSupport.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
@@ -15,7 +15,6 @@
 */
 package org.springframework.data.mongodb.core;

-import com.mongodb.ReadPreference;
 import lombok.AccessLevel;
 import lombok.NonNull;
 import lombok.RequiredArgsConstructor;
@@ -26,6 +25,7 @@ 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;
@@ -37,6 +37,7 @@ import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 import org.springframework.util.StringUtils;

+import com.mongodb.ReadPreference;
 import com.mongodb.client.FindIterable;

 /**
@@ -257,9 +258,9 @@ class ExecutableFindOperationSupport implements ExecutableFindOperation {
 		 * @see org.springframework.data.mongodb.core.CursorPreparer#prepare(com.mongodb.clientFindIterable)
 		 */
 		@Override
-		public FindIterable<Document> prepare(FindIterable<Document> cursor) {
+		public FindIterable<Document> prepare(FindIterable<Document> iterable) {

-			FindIterable<Document> target = delegate != null ? delegate.prepare(cursor) : cursor;
+			FindIterable<Document> target = delegate != null ? delegate.prepare(iterable) : iterable;
 			return limit.map(target::limit).orElse(target);
 		}

--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableInsertOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableInsertOperation.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableInsertOperationSupport.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableInsertOperationSupport.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableMapReduceOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableMapReduceOperation.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableMapReduceOperationSupport.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableMapReduceOperationSupport.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableRemoveOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableRemoveOperation.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableRemoveOperationSupport.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableRemoveOperationSupport.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableUpdateOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableUpdateOperation.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableUpdateOperationSupport.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/ExecutableUpdateOperationSupport.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/FindAndModifyOptions.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/FindAndModifyOptions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 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.
@@ -78,7 +78,7 @@ public class FindAndModifyOptions {
 	}

 	/**
-	 * Create new {@link FindAndModifyOptions} based on option of given {@litearl source}.
+	 * Create new {@link FindAndModifyOptions} based on option of given {@literal source}.
 	 *
 	 * @param source can be {@literal null}.
 	 * @return new instance of {@link FindAndModifyOptions}.
@@ -117,8 +117,8 @@ public class FindAndModifyOptions {
 	/**
 	 * Define the {@link Collation} specifying language-specific rules for string comparison.
 	 *
-	 * @param collation
-	 * @return
+	 * @param collation can be {@literal null}.
+	 * @return this.
 	 * @since 2.0
 	 */
 	public FindAndModifyOptions collation(@Nullable Collation collation) {
@@ -142,7 +142,7 @@ public class FindAndModifyOptions {
 	/**
 	 * Get the {@link Collation} specifying language-specific rules for string comparison.
 	 *
-	 * @return
+	 * @return never {@literal null}.
 	 * @since 2.0
 	 */
 	public Optional<Collation> getCollation() {
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/FindAndReplaceOptions.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/FindAndReplaceOptions.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
@@ -116,7 +116,7 @@ public class FindAndReplaceOptions {
 	/**
 	 * Get the bit indicating to return the replacement document.
 	 *
-	 * @return
+	 * @return {@literal true} if set.
 	 */
 	public boolean isReturnNew() {
 		return returnNew;
@@ -125,7 +125,7 @@ public class FindAndReplaceOptions {
 	/**
 	 * Get the bit indicating if to create a new document if not exists.
 	 *
-	 * @return
+	 * @return {@literal true} if set.
 	 */
 	public boolean isUpsert() {
 		return upsert;
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/FindPublisherPreparer.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/FindPublisherPreparer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2019 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.
@@ -54,7 +54,7 @@ public interface FindPublisherPreparer extends ReadPreferenceAware {
 	 *
 	 * @param collection must not be {@literal null}.
 	 * @param find must not be {@literal null}.
-	 * @return
+	 * @return never {@literal null}.
 	 * @throws IllegalArgumentException if one of the required arguments is {@literal null}.
 	 * @since 2.2
 	 */
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/FluentMongoOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/FluentMongoOperations.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/GeoCommandStatistics.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/GeoCommandStatistics.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2019 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.
@@ -47,7 +47,7 @@ class GeoCommandStatistics {
 	 * Creates a new {@link GeoCommandStatistics} from the given command result extracting the statistics.
 	 *
 	 * @param commandResult must not be {@literal null}.
-	 * @return
+	 * @return never {@literal null}.
 	 */
 	public static GeoCommandStatistics from(Document commandResult) {

@@ -61,7 +61,7 @@ class GeoCommandStatistics {
 	 * Returns the average distance reported by the command result. Mitigating a removal of the field in case the command
 	 * didn't return any result introduced in MongoDB 3.2 RC1.
 	 *
-	 * @return
+	 * @return never {@literal null}, uses {@link Double#NaN} if {@literal avgDistance} does not exist.
 	 * @see <a href="https://jira.mongodb.org/browse/SERVER-21024">MongoDB Jira SERVER-21024</a>
 	 */
 	public double getAverageDistance() {
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/IndexConverters.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/IndexConverters.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MappedDocument.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MappedDocument.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MappingMongoJsonSchemaCreator.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MappingMongoJsonSchemaCreator.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoAction.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoAction.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoActionOperation.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoActionOperation.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoAdmin.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoAdmin.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoAdminOperations.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoAdminOperations.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoClientFactoryBean.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoClientFactoryBean.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoClientOptionsFactoryBean.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoClientOptionsFactoryBean.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015-2019 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.
--- a/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoDataIntegrityViolationException.java
+++ b/spring-data-mongodb/src/main/java/org/springframework/data/mongodb/core/MongoDataIntegrityViolationException.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2019 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.
--- a/Show More
+++ b/Show More