Add Nullable annotation to parameter of overridden equals method

pom.xml

@@ -5,7 +5,7 @@
 
 	<groupId>org.springframework.data</groupId>
 	<artifactId>spring-data-relational-parent</artifactId>
-	<version>3.0.0-SNAPSHOT</version>
+	<version>3.0.x-GH-1374-SNAPSHOT</version>
 	<packaging>pom</packaging>
 
 	<name>Spring Data Relational Parent</name>

spring-data-jdbc-distribution/pom.xml

@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-relational-parent</artifactId>
-		<version>3.0.0-SNAPSHOT</version>
+		<version>3.0.x-GH-1374-SNAPSHOT</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 

spring-data-jdbc/pom.xml

@@ -6,7 +6,7 @@
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>spring-data-jdbc</artifactId>
-	<version>3.0.0-SNAPSHOT</version>
+	<version>3.0.x-GH-1374-SNAPSHOT</version>
 
 	<name>Spring Data JDBC</name>
 	<description>Spring Data module for JDBC repositories.</description>
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-relational-parent</artifactId>
-		<version>3.0.0-SNAPSHOT</version>
+		<version>3.0.x-GH-1374-SNAPSHOT</version>
 	</parent>
 
 	<properties>

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/Identifier.java

@@ -208,7 +208,7 @@ public Class<?> getTargetType() {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o)
 				return true;
@@ -272,7 +272,7 @@ public V get(Object key) {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o) return true;
 		if (o == null || getClass() != o.getClass()) return false;

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/InsertSubject.java

@@ -17,6 +17,8 @@
 
 import java.util.Objects;
 
+import org.springframework.lang.Nullable;
+
 /**
  * The subject of an insert, described by the entity instance and its {@link Identifier}, where identifier contains
  * information about data that needs to be considered for the insert but which is not part of the entity. Namely
@@ -50,7 +52,7 @@ public Identifier getIdentifier() {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o)
 			return true;

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/convert/SqlGenerator.java

@@ -1001,7 +1001,7 @@ Column getParentId() {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o) {
 				return true;

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/mapping/AggregateReference.java

@@ -65,7 +65,7 @@ public ID getId() {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o)
 				return true;

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/mapping/JdbcValue.java

@@ -55,7 +55,7 @@ public SQLType getJdbcType() {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o)
 			return true;

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/repository/query/JdbcQueryCreator.java

@@ -352,7 +352,7 @@ static private final class Join {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o)
 				return true;

spring-data-r2dbc/pom.xml

@@ -6,7 +6,7 @@
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>spring-data-r2dbc</artifactId>
-	<version>3.0.0-SNAPSHOT</version>
+	<version>3.0.x-GH-1374-SNAPSHOT</version>
 
 	<name>Spring Data R2DBC</name>
 	<description>Spring Data module for R2DBC</description>
@@ -15,7 +15,7 @@
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-relational-parent</artifactId>
-		<version>3.0.0-SNAPSHOT</version>
+		<version>3.0.x-GH-1374-SNAPSHOT</version>
 	</parent>
 
 	<properties>

spring-data-r2dbc/src/main/java/org/springframework/data/r2dbc/core/NamedParameterUtils.java

@@ -382,7 +382,7 @@ int getEndIndex() {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o)
 				return true;
 			if (!(o instanceof ParameterHolder))

spring-data-r2dbc/src/main/java/org/springframework/data/r2dbc/mapping/OutboundRow.java

@@ -24,6 +24,7 @@
 import java.util.function.BiConsumer;
 
 import org.springframework.data.relational.core.sql.SqlIdentifier;
+import org.springframework.lang.Nullable;
 import org.springframework.r2dbc.core.Parameter;
 import org.springframework.util.Assert;
 
@@ -195,7 +196,7 @@ public Set<Entry<SqlIdentifier, Parameter>> entrySet() {
 	}
 
 	@Override
-	public boolean equals(final Object o) {
+	public boolean equals(@Nullable final Object o) {
 
 		if (this == o) {
 			return true;

spring-data-r2dbc/src/test/java/org/springframework/data/r2dbc/repository/AbstractR2dbcRepositoryWithMixedCaseNamesIntegrationTests.java

@@ -142,7 +142,7 @@ public static class LegoSet {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o)
 				return true;
 			if (o == null || getClass() != o.getClass())

spring-data-relational/pom.xml

@@ -6,15 +6,15 @@
 	<modelVersion>4.0.0</modelVersion>
 
 	<artifactId>spring-data-relational</artifactId>
-	<version>3.0.0-SNAPSHOT</version>
+	<version>3.0.x-GH-1374-SNAPSHOT</version>
 
 	<name>Spring Data Relational</name>
 	<description>Spring Data Relational support</description>
 
 	<parent>
 		<groupId>org.springframework.data</groupId>
 		<artifactId>spring-data-relational-parent</artifactId>
-		<version>3.0.0-SNAPSHOT</version>
+		<version>3.0.x-GH-1374-SNAPSHOT</version>
 	</parent>
 
 	<properties>

spring-data-relational/src/main/java/org/springframework/data/relational/core/mapping/DerivedSqlIdentifier.java

@@ -21,6 +21,7 @@
 
 import org.springframework.data.relational.core.sql.IdentifierProcessing;
 import org.springframework.data.relational.core.sql.SqlIdentifier;
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 
 /**
@@ -69,7 +70,7 @@ public String getReference(IdentifierProcessing processing) {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o) {
 			return true;

spring-data-relational/src/main/java/org/springframework/data/relational/core/mapping/PersistentPropertyPathExtension.java

@@ -486,7 +486,7 @@ private SqlIdentifier prefixWithTableAlias(SqlIdentifier columnName) {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o)
 			return true;

spring-data-relational/src/main/java/org/springframework/data/relational/core/mapping/event/Identifier.java

@@ -17,6 +17,7 @@
 
 import java.util.Objects;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 
 /**
@@ -56,7 +57,7 @@ public Object getValue() {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o)
 			return true;

spring-data-relational/src/main/java/org/springframework/data/relational/core/sql/AbstractSegment.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.relational.core.sql;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.StringUtils;
 
@@ -50,7 +51,7 @@ public int hashCode() {
 	}
 
 	@Override
-	public boolean equals(Object obj) {
+	public boolean equals(@Nullable Object obj) {
 		return obj instanceof Segment && toString().equals(obj.toString());
 	}
 

spring-data-relational/src/main/java/org/springframework/data/relational/core/sql/Column.java

@@ -360,7 +360,7 @@ String getPrefix() {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o) {
 			return true;
@@ -421,7 +421,7 @@ public String toString() {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o) {
 				return true;

spring-data-relational/src/main/java/org/springframework/data/relational/core/sql/CompositeSqlIdentifier.java

@@ -20,6 +20,7 @@
 import java.util.StringJoiner;
 import java.util.function.UnaryOperator;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 
 /**
@@ -70,7 +71,7 @@ public String getReference(IdentifierProcessing processing) {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o) {
 			return true;

spring-data-relational/src/main/java/org/springframework/data/relational/core/sql/DefaultSqlIdentifier.java

@@ -19,6 +19,7 @@
 import java.util.Iterator;
 import java.util.function.UnaryOperator;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 
 /**
@@ -65,7 +66,7 @@ public String getReference(IdentifierProcessing processing) {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o) {
 			return true;

spring-data-relational/src/main/java/org/springframework/data/relational/core/sql/Table.java

@@ -17,6 +17,7 @@
 
 import java.util.Objects;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 
 /**
@@ -131,7 +132,7 @@ public String toString() {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o) {
 			return true;
 		}
@@ -189,7 +190,7 @@ public String toString() {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o) {
 				return true;