Release version 3.2 GA (2021.0.0).

See #3616

Jenkinsfile

@@ -23,39 +23,39 @@ pipeline {
 
 					steps {
 						script {
-							def image = docker.build("springci/spring-data-openjdk8-with-mongodb-4.0", "ci/openjdk8-mongodb-4.0/")
+							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 4.2') {
+				stage('Publish JDK 8 + MongoDB 4.4') {
 					when {
-						changeset "ci/openjdk8-mongodb-4.2/**"
+						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-4.2.0", "ci/openjdk8-mongodb-4.2/")
+							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 4.2') {
+				stage('Publish JDK 15 + MongoDB 4.4') {
 					when {
-						changeset "ci/openjdk15-mongodb-4.2/**"
+						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-4.2.0", "ci/openjdk15-mongodb-4.2/")
+							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()
 							}
@@ -79,7 +79,7 @@ pipeline {
 			steps {
 				script {
 					docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
-						docker.image('springci/spring-data-openjdk8-with-mongodb-4.2.0:latest').inside('-v $HOME:/tmp/jenkins-home') {
+						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'
@@ -108,7 +108,7 @@ pipeline {
 					steps {
 						script {
 							docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
-								docker.image('springci/spring-data-openjdk8-with-mongodb-4.0:latest').inside('-v $HOME:/tmp/jenkins-home') {
+								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'
@@ -121,7 +121,7 @@ pipeline {
 					}
 				}
 
-				stage("test: mongodb 4.2 (jdk8)") {
+				stage("test: mongodb 4.4 (jdk8)") {
 					agent {
 						label 'data'
 					}
@@ -129,7 +129,7 @@ pipeline {
 					steps {
 						script {
 							docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
-								docker.image('springci/spring-data-openjdk8-with-mongodb-4.2.0:latest').inside('-v $HOME:/tmp/jenkins-home') {
+								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'
@@ -150,7 +150,7 @@ pipeline {
 					steps {
 						script {
 							docker.withRegistry('', 'hub.docker.com-springbuildmaster') {
-								docker.image('springci/spring-data-openjdk15-with-mongodb-4.2.0:latest').inside('-v $HOME:/tmp/jenkins-home') {
+								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'

ci/openjdk11-mongodb-4.4/Dockerfile

@@ -5,11 +5,11 @@ 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 e162f504a20cdf15827f718d4b7c549a058f8b6b ; \
-	echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.2 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-4.2.list; \
+	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=4.2.0 mongodb-org-server=4.2.0 mongodb-org-shell=4.2.0 mongodb-org-mongos=4.2.0 mongodb-org-tools=4.2.0 ; \
+	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

@@ -5,11 +5,11 @@ 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 e162f504a20cdf15827f718d4b7c549a058f8b6b ; \
-	echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.2 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-4.2.list; \
+	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=4.2.0 mongodb-org-server=4.2.0 mongodb-org-shell=4.2.0 mongodb-org-mongos=4.2.0 mongodb-org-tools=4.2.0 ; \
+	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

@@ -10,6 +10,6 @@ RUN RUN set -eux; \
 	echo ${TZ} > /etc/timezone;
 
 RUN apt-get update ; \
-	apt-get install -y mongodb-org=4.0.14 mongodb-org-server=4.0.14 mongodb-org-shell=4.0.14 mongodb-org-mongos=4.0.14 mongodb-org-tools=4.0.14 ; \
+	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

@@ -5,11 +5,13 @@ 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 e162f504a20cdf15827f718d4b7c549a058f8b6b ; \
-	echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.2 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-4.2.list; \
+	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=4.2.0 mongodb-org-server=4.2.0 mongodb-org-shell=4.2.0 mongodb-org-mongos=4.2.0 mongodb-org-tools=4.2.0 ; \
+	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/*;

pom.xml

@@ -5,7 +5,7 @@
 
 	<groupId>org.springframework.data</groupId>
 	<artifactId>spring-data-mongodb-parent</artifactId>
-	<version>3.2.0-RC1</version>
+	<version>3.2.0</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>2.5.0-RC1</version>
+		<version>2.5.0</version>
 	</parent>
 
 	<modules>
@@ -26,8 +26,8 @@
 	<properties>
 		<project.type>multi</project.type>
 		<dist.id>spring-data-mongodb</dist.id>
-		<springdata.commons>2.5.0-RC1</springdata.commons>
-		<mongo>4.2.2</mongo>
+		<springdata.commons>2.5.0</springdata.commons>
+		<mongo>4.2.3</mongo>
 		<mongo.reactivestreams>${mongo}</mongo.reactivestreams>
 		<jmh.version>1.19</jmh.version>
 	</properties>
@@ -134,8 +134,8 @@
 
 	<repositories>
 		<repository>
-			<id>spring-libs-milestone</id>
-			<url>https://repo.spring.io/libs-milestone</url>
+			<id>spring-libs-release</id>
+			<url>https://repo.spring.io/libs-release</url>
 		</repository>
 		<repository>
 			<id>sonatype-libs-snapshot</id>

spring-data-mongodb-benchmarks/pom.xml

@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>3.2.0-RC1</version>
+		<version>3.2.0</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 

spring-data-mongodb-distribution/pom.xml

@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>3.2.0-RC1</version>
+		<version>3.2.0</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 

spring-data-mongodb/pom.xml

@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-mongodb-parent</artifactId>
-		<version>3.2.0-RC1</version>
+		<version>3.2.0</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 

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

@@ -1170,7 +1170,7 @@ public class QueryMapper {
 
 			if (sourceProperty != null && sourceProperty.getOwner().equals(entity)) {
 				return mappingContext
-						.getPersistentPropertyPath(PropertyPath.from(sourceProperty.getName(), entity.getTypeInformation()));
+						.getPersistentPropertyPath(PropertyPath.from(Pattern.quote(sourceProperty.getName()), entity.getTypeInformation()));
 			}
 
 			PropertyPath path = forName(rawPath);
@@ -1229,6 +1229,13 @@ public class QueryMapper {
 					return forName(path.substring(0, path.length() - 3) + "id");
 				}
 
+				// Ok give it another try quoting
+				try {
+					return PropertyPath.from(Pattern.quote(path), entity.getTypeInformation());
+				} catch (PropertyReferenceException | InvalidPersistentPropertyPath ex) {
+
+				}
+
 				return null;
 			}
 		}

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

@@ -20,8 +20,10 @@ import static org.springframework.util.ObjectUtils.*;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.Map.Entry;
 import java.util.regex.Pattern;
 import java.util.stream.Collectors;
@@ -59,6 +61,7 @@ import com.mongodb.BasicDBList;
  * @author Mark Paluch
  * @author Andreas Zink
  * @author Ziemowit Stolarczyk
+ * @author Clément Petit
  */
 public class Criteria implements CriteriaDefinition {
 
@@ -970,15 +973,15 @@ public class Criteria implements CriteriaDefinition {
 	 * @param right
 	 * @return
 	 */
-	private boolean isEqual(Object left, Object right) {
+	private boolean isEqual(@Nullable Object left, @Nullable Object right) {
 
 		if (left == null) {
 			return right == null;
 		}
 
-		if (Pattern.class.isInstance(left)) {
+		if (left instanceof Pattern) {
 
-			if (!Pattern.class.isInstance(right)) {
+			if (!(right instanceof Pattern)) {
 				return false;
 			}
 
@@ -989,6 +992,52 @@ public class Criteria implements CriteriaDefinition {
 					&& leftPattern.flags() == rightPattern.flags();
 		}
 
+		if (left instanceof Document) {
+
+			if (!(right instanceof Document)) {
+				return false;
+			}
+
+			Document leftDocument = (Document) left;
+			Document rightDocument = (Document) right;
+			Iterator<Entry<String, Object>> leftIterator = leftDocument.entrySet().iterator();
+			Iterator<Entry<String, Object>> rightIterator = rightDocument.entrySet().iterator();
+
+			while (leftIterator.hasNext() && rightIterator.hasNext()) {
+
+				Map.Entry<String, Object> leftEntry = leftIterator.next();
+				Map.Entry<String, Object> rightEntry = rightIterator.next();
+
+				if (!isEqual(leftEntry.getKey(), rightEntry.getKey())
+						|| !isEqual(leftEntry.getValue(), rightEntry.getValue())) {
+					return false;
+				}
+			}
+
+			return !leftIterator.hasNext() && !rightIterator.hasNext();
+		}
+
+		if (Collection.class.isAssignableFrom(left.getClass())) {
+
+			if (!Collection.class.isAssignableFrom(right.getClass())) {
+				return false;
+			}
+
+			Collection<?> leftCollection = (Collection<?>) left;
+			Collection<?> rightCollection = (Collection<?>) right;
+			Iterator<?> leftIterator = leftCollection.iterator();
+			Iterator<?> rightIterator = rightCollection.iterator();
+
+			while (leftIterator.hasNext() && rightIterator.hasNext()) {
+
+				if (!isEqual(leftIterator.next(), rightIterator.next())) {
+					return false;
+				}
+			}
+
+			return !leftIterator.hasNext() && !rightIterator.hasNext();
+		}
+
 		return ObjectUtils.nullSafeEquals(left, right);
 	}
 

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/query/AggregationUtils.java

@@ -33,6 +33,7 @@ import org.springframework.data.repository.query.QueryMethodEvaluationContextPro
 import org.springframework.expression.ExpressionParser;
 import org.springframework.lang.Nullable;
 import org.springframework.util.ClassUtils;
+import org.springframework.util.ObjectUtils;
 import org.springframework.util.StringUtils;
 
 /**
@@ -163,9 +164,9 @@ abstract class AggregationUtils {
 	 * @throws IllegalArgumentException when none of the above rules is met.
 	 */
 	@Nullable
-	static <T> T extractSimpleTypeResult(Document source, Class<T> targetType, MongoConverter converter) {
+	static <T> T extractSimpleTypeResult(@Nullable Document source, Class<T> targetType, MongoConverter converter) {
 
-		if (source.isEmpty()) {
+		if (ObjectUtils.isEmpty(source)) {
 			return null;
 		}
 

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/MongoTemplateFieldProjectionTests.java

@@ -34,6 +34,7 @@ import org.springframework.data.mongodb.core.mapping.Field;
 import org.springframework.data.mongodb.core.mapping.Unwrapped;
 import org.springframework.data.mongodb.core.query.Criteria;
 import org.springframework.data.mongodb.core.query.Query;
+import org.springframework.data.mongodb.test.util.EnableIfMongoServerVersion;
 import org.springframework.data.mongodb.test.util.MongoTemplateExtension;
 import org.springframework.data.mongodb.test.util.MongoTestTemplate;
 import org.springframework.data.mongodb.test.util.Template;
@@ -42,8 +43,10 @@ import org.springframework.data.mongodb.test.util.Template;
  * Integration tests for {@link org.springframework.data.mongodb.core.query.Field}.
  *
  * @author Christoph Strobl
+ * @author Mark Paluch
  */
 @ExtendWith(MongoTemplateExtension.class)
+@EnableIfMongoServerVersion(isGreaterThanEqual = "4.4")
 class MongoTemplateFieldProjectionTests {
 
 	private static @Template MongoTestTemplate template;

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/convert/QueryMapperUnitTests.java

@@ -1191,6 +1191,72 @@ public class QueryMapperUnitTests {
 		assertThat(document).isEqualTo(new org.bson.Document("stringValue", 1));
 	}
 
+	@Test // GH-3601
+	void resolvesFieldnameWithUnderscoresCorrectly() {
+
+		Query query = query(where("fieldname_with_underscores").exists(true));
+
+		org.bson.Document document = mapper.getMappedObject(query.getQueryObject(),
+				context.getPersistentEntity(WithPropertyUsingUnderscoreInName.class));
+
+		assertThat(document).isEqualTo(new org.bson.Document("fieldname_with_underscores", new org.bson.Document("$exists", true)));
+	}
+
+	@Test // GH-3601
+	void resolvesMappedFieldnameWithUnderscoresCorrectly() {
+
+		Query query = query(where("renamed_fieldname_with_underscores").exists(true));
+
+		org.bson.Document document = mapper.getMappedObject(query.getQueryObject(),
+				context.getPersistentEntity(WithPropertyUsingUnderscoreInName.class));
+
+		assertThat(document).isEqualTo(new org.bson.Document("renamed", new org.bson.Document("$exists", true)));
+	}
+
+	@Test // GH-3601
+	void resolvesSimpleNestedFieldnameWithUnderscoresCorrectly() {
+
+		Query query = query(where("simple.fieldname_with_underscores").exists(true));
+
+		org.bson.Document document = mapper.getMappedObject(query.getQueryObject(),
+				context.getPersistentEntity(WrapperAroundWithPropertyUsingUnderscoreInName.class));
+
+		assertThat(document).isEqualTo(new org.bson.Document("simple.fieldname_with_underscores", new org.bson.Document("$exists", true)));
+	}
+
+	@Test // GH-3601
+	void resolvesSimpleNestedMappedFieldnameWithUnderscoresCorrectly() {
+
+		Query query = query(where("simple.renamed_fieldname_with_underscores").exists(true));
+
+		org.bson.Document document = mapper.getMappedObject(query.getQueryObject(),
+				context.getPersistentEntity(WrapperAroundWithPropertyUsingUnderscoreInName.class));
+
+		assertThat(document).isEqualTo(new org.bson.Document("simple.renamed", new org.bson.Document("$exists", true)));
+	}
+
+	@Test // GH-3601
+	void resolvesFieldNameWithUnderscoreOnNestedFieldnameWithUnderscoresCorrectly() {
+
+		Query query = query(where("double_underscore.fieldname_with_underscores").exists(true));
+
+		org.bson.Document document = mapper.getMappedObject(query.getQueryObject(),
+				context.getPersistentEntity(WrapperAroundWithPropertyUsingUnderscoreInName.class));
+
+		assertThat(document).isEqualTo(new org.bson.Document("double_underscore.fieldname_with_underscores", new org.bson.Document("$exists", true)));
+	}
+
+	@Test // GH-3601
+	void resolvesFieldNameWithUnderscoreOnNestedMappedFieldnameWithUnderscoresCorrectly() {
+
+		Query query = query(where("double_underscore.renamed_fieldname_with_underscores").exists(true));
+
+		org.bson.Document document = mapper.getMappedObject(query.getQueryObject(),
+				context.getPersistentEntity(WrapperAroundWithPropertyUsingUnderscoreInName.class));
+
+		assertThat(document).isEqualTo(new org.bson.Document("double_underscore.renamed", new org.bson.Document("$exists", true)));
+	}
+
 	class WithDeepArrayNesting {
 
 		List<WithNestedArray> level0;
@@ -1408,4 +1474,17 @@ public class QueryMapperUnitTests {
 		String transientValue;
 	}
 
+	static class WrapperAroundWithPropertyUsingUnderscoreInName {
+
+		WithPropertyUsingUnderscoreInName simple;
+		WithPropertyUsingUnderscoreInName double_underscore;
+	}
+
+	static class WithPropertyUsingUnderscoreInName {
+
+		String fieldname_with_underscores;
+
+		@Field("renamed")
+		String renamed_fieldname_with_underscores;
+	}
 }

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/query/CriteriaUnitTests.java

@@ -38,6 +38,8 @@ import org.springframework.data.mongodb.core.schema.MongoJsonSchema;
  * @author Christoph Strobl
  * @author Andreas Zink
  * @author Ziemowit Stolarczyk
+ * @author Clément Petit
+ * @author Mark Paluch
  */
 public class CriteriaUnitTests {
 
@@ -353,9 +355,72 @@ public class CriteriaUnitTests {
 	@Test // DATAMONGO-2002
 	public void shouldEqualForSamePattern() {
 
+		Criteria left = new Criteria("field").regex("foo");
+		Criteria right = new Criteria("field").regex("foo");
+
+		assertThat(left).isEqualTo(right);
+	}
+
+	@Test // DATAMONGO-2002
+	public void shouldEqualForDocument() {
+
+		assertThat(new Criteria("field").is(new Document("one", 1).append("two", "two").append("null", null)))
+				.isEqualTo(new Criteria("field").is(new Document("one", 1).append("two", "two").append("null", null)));
+
+		assertThat(new Criteria("field").is(new Document("one", 1).append("two", "two").append("null", null)))
+				.isNotEqualTo(new Criteria("field").is(new Document("one", 1).append("two", "two")));
+
+		assertThat(new Criteria("field").is(new Document("one", 1).append("two", "two")))
+				.isNotEqualTo(new Criteria("field").is(new Document("one", 1).append("two", "two").append("null", null)));
+
+		assertThat(new Criteria("field").is(new Document("one", 1).append("null", null).append("two", "two")))
+				.isNotEqualTo(new Criteria("field").is(new Document("one", 1).append("two", "two").append("null", null)));
+
+		assertThat(new Criteria("field").is(new Document())).isNotEqualTo(new Criteria("field").is("foo"));
+		assertThat(new Criteria("field").is("foo")).isNotEqualTo(new Criteria("field").is(new Document()));
+	}
+
+	@Test // DATAMONGO-2002
+	public void shouldEqualForCollection() {
+
+		assertThat(new Criteria("field").is(Arrays.asList("foo", "bar")))
+				.isEqualTo(new Criteria("field").is(Arrays.asList("foo", "bar")));
+
+		assertThat(new Criteria("field").is(Arrays.asList("foo", 1)))
+				.isNotEqualTo(new Criteria("field").is(Arrays.asList("foo", "bar")));
+
+		assertThat(new Criteria("field").is(Collections.singletonList("foo")))
+				.isNotEqualTo(new Criteria("field").is(Arrays.asList("foo", "bar")));
+
+		assertThat(new Criteria("field").is(Arrays.asList("foo", "bar")))
+				.isNotEqualTo(new Criteria("field").is(Collections.singletonList("foo")));
+
+		assertThat(new Criteria("field").is(Arrays.asList("foo", "bar"))).isNotEqualTo(new Criteria("field").is("foo"));
+
+		assertThat(new Criteria("field").is("foo")).isNotEqualTo(new Criteria("field").is(Arrays.asList("foo", "bar")));
+	}
+
+	@Test // GH-3414
+	public void shouldEqualForSamePatternAndFlags() {
+
 		Criteria left = new Criteria("field").regex("foo", "iu");
 		Criteria right = new Criteria("field").regex("foo");
 
 		assertThat(left).isNotEqualTo(right);
 	}
+
+	@Test // GH-3414
+	public void shouldEqualForNestedPattern() {
+
+		Criteria left = new Criteria("a").orOperator(
+			new Criteria("foo").regex("value", "i"),
+			new Criteria("bar").regex("value")
+		);
+		Criteria right = new Criteria("a").orOperator(
+			new Criteria("foo").regex("value", "i"),
+			new Criteria("bar").regex("value")
+		);
+
+		assertThat(left).isEqualTo(right);
+	}
 }

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/AbstractPersonRepositoryIntegrationTests.java

@@ -63,6 +63,7 @@ import org.springframework.data.mongodb.core.query.BasicQuery;
 import org.springframework.data.mongodb.core.query.Query;
 import org.springframework.data.mongodb.repository.Person.Sex;
 import org.springframework.data.mongodb.repository.SampleEvaluationContextExtension.SampleSecurityContextHolder;
+import org.springframework.data.mongodb.test.util.EnableIfMongoServerVersion;
 import org.springframework.data.querydsl.QSort;
 import org.springframework.test.context.junit.jupiter.SpringExtension;
 import org.springframework.test.util.ReflectionTestUtils;
@@ -1414,7 +1415,8 @@ public abstract class AbstractPersonRepositoryIntegrationTests {
 		assertThat(repository.findByFirstnameIn(".*")).isEmpty();
 	}
 
-	@Test // GH-23583
+	@Test // GH-3583
+	@EnableIfMongoServerVersion(isGreaterThanEqual = "4.4")
 	void annotatedQueryShouldAllowAggregationInProjection() {
 
 		Person target = repository.findWithAggregationInProjection(alicia.getId());

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/StringBasedAggregationUnitTests.java

@@ -159,6 +159,14 @@ public class StringBasedAggregationUnitTests {
 		assertThat(executeAggregation("returnCollection").result).isEqualTo(expected);
 	}
 
+	@Test // GH-3623
+	public void returnNullWhenSingleResultIsNotPresent() {
+
+		when(aggregationResults.getMappedResults()).thenReturn(Collections.emptyList());
+
+		assertThat(executeAggregation("simpleReturnType").result).isNull();
+	}
+
 	@Test // DATAMONGO-2153
 	public void returnRawResultType() {
 		assertThat(executeAggregation("returnRawResultType").result).isEqualTo(aggregationResults);
@@ -312,6 +320,9 @@ public class StringBasedAggregationUnitTests {
 
 		@Aggregation(RAW_GROUP_BY_LASTNAME_STRING)
 		Page<Person> invalidPageReturnType(Pageable page);
+
+		@Aggregation(RAW_GROUP_BY_LASTNAME_STRING)
+		String simpleReturnType();
 	}
 
 	static class PersonAggregate {

src/main/resources/changelog.txt

@@ -1,6 +1,36 @@
 Spring Data MongoDB Changelog
 =============================
 
+Changes in version 3.2.0 (2021-04-14)
+-------------------------------------
+* #3623 - `@Aggregation` repository query method causes `NullPointerException` when the result is empty.
+* #3621 - Upgrade to MongoDB Java Drivers 4.2.3.
+* #3612 - Upgrade to MongoDB 4.4 on CI.
+* #3601 - Criteria object not allowing to use field names with underscore in them.
+* #3583 - Support aggregation expression on fields projection.
+* #3414 - Criteria or toEquals fail if contains regex [DATAMONGO-2559].
+
+
+Changes in version 3.1.8 (2021-04-14)
+-------------------------------------
+* #3623 - `@Aggregation` repository query method causes `NullPointerException` when the result is empty.
+* #3601 - Criteria object not allowing to use field names with underscore in them.
+* #3414 - Criteria or toEquals fail if contains regex [DATAMONGO-2559].
+
+
+Changes in version 3.0.9.RELEASE (2021-04-14)
+---------------------------------------------
+* #3623 - `@Aggregation` repository query method causes `NullPointerException` when the result is empty.
+* #3609 - SimpleReactiveMongoRepository#saveAll does not populate @Id property if it is immutable.
+* #3414 - Criteria or toEquals fail if contains regex [DATAMONGO-2559].
+
+
+Changes in version 3.1.7 (2021-03-31)
+-------------------------------------
+* #3613 - Use StringUtils.replace(…) instead of String.replaceAll(…) for mapKeyDotReplacement.
+* #3609 - SimpleReactiveMongoRepository#saveAll does not populate @Id property if it is immutable.
+
+
 Changes in version 3.2.0-RC1 (2021-03-31)
 -----------------------------------------
 * #3613 - Use StringUtils.replace(…) instead of String.replaceAll(…) for mapKeyDotReplacement.
@@ -3393,6 +3423,10 @@ Repository
 
 
 
+
+
+
+
 
 
 

src/main/resources/notice.txt

@@ -1,4 +1,4 @@
-Spring Data MongoDB 3.2 RC1 (2021.0.0)
+Spring Data MongoDB 3.2 GA (2021.0.0)
 Copyright (c) [2010-2019] Pivotal Software, Inc.
 
 This product is licensed to you under the Apache License, Version 2.0 (the "License").
@@ -26,3 +26,4 @@ conditions of the subcomponent's license, as noted in the LICENSE file.
 
 
 
+