Add Nullable annotation to parameter of overridden equals method.

Closes: #2450
Original pull request: #2451

src/main/java/org/springframework/data/redis/cache/NoOpCacheStatisticsCollector.java

@@ -18,6 +18,7 @@ package org.springframework.data.redis.cache;
 import java.time.Instant;
 import java.util.concurrent.TimeUnit;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
 
 /**
@@ -112,7 +113,7 @@ enum NoOpCacheStatisticsCollector implements CacheStatisticsCollector {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o) {
 				return true;

src/main/java/org/springframework/data/redis/connection/BitFieldSubCommands.java

@@ -147,7 +147,7 @@ public class BitFieldSubCommands implements Iterable<BitFieldSubCommand> {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o) {
 			return true;
 		}
@@ -432,7 +432,7 @@ public class BitFieldSubCommands implements Iterable<BitFieldSubCommand> {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o) {
 				return true;
@@ -544,7 +544,7 @@ public class BitFieldSubCommands implements Iterable<BitFieldSubCommand> {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o) {
 				return true;
@@ -592,7 +592,7 @@ public class BitFieldSubCommands implements Iterable<BitFieldSubCommand> {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o) {
 				return true;
@@ -676,7 +676,7 @@ public class BitFieldSubCommands implements Iterable<BitFieldSubCommand> {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o) {
 				return true;
 			}
@@ -827,7 +827,7 @@ public class BitFieldSubCommands implements Iterable<BitFieldSubCommand> {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o) {
 				return true;

src/main/java/org/springframework/data/redis/connection/ClusterCommandExecutor.java

@@ -678,7 +678,7 @@ public class ClusterCommandExecutor implements DisposableBean {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o)
 				return true;
 			if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/connection/DefaultStringTuple.java

@@ -20,6 +20,7 @@ import java.nio.charset.StandardCharsets;
 import org.springframework.data.redis.connection.StringRedisConnection.StringTuple;
 import org.springframework.data.redis.connection.zset.DefaultTuple;
 import org.springframework.data.redis.connection.zset.Tuple;
+import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
 
 /**
@@ -78,7 +79,7 @@ public class DefaultStringTuple extends DefaultTuple implements StringTuple {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o)
 			return true;
 		if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/connection/ReactiveRedisConnection.java

@@ -366,7 +366,7 @@ public interface ReactiveRedisConnection extends Closeable {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o)
 				return true;
 			if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/connection/ReactiveSubscription.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.redis.connection;
 
+import org.springframework.lang.Nullable;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
@@ -186,7 +187,7 @@ public interface ReactiveSubscription {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o)
 				return true;
 			if (o == null || getClass() != o.getClass())
@@ -252,7 +253,7 @@ public interface ReactiveSubscription {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o)
 				return true;
 			if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/connection/RedisClusterConfiguration.java

@@ -199,7 +199,7 @@ public class RedisClusterConfiguration implements RedisConfiguration, ClusterCon
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o) {
 			return true;
 		}

src/main/java/org/springframework/data/redis/connection/RedisNode.java

@@ -269,7 +269,7 @@ public class RedisNode implements NamedNode {
 	}
 
 	@Override
-	public boolean equals(Object obj) {
+	public boolean equals(@Nullable Object obj) {
 
 		if (this == obj) {
 			return true;

src/main/java/org/springframework/data/redis/connection/RedisPassword.java

@@ -144,7 +144,7 @@ public class RedisPassword {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o)
 			return true;

src/main/java/org/springframework/data/redis/connection/RedisSentinelConfiguration.java

@@ -265,7 +265,7 @@ public class RedisSentinelConfiguration implements RedisConfiguration, SentinelC
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o) {
 			return true;
 		}

src/main/java/org/springframework/data/redis/connection/RedisSocketConfiguration.java

@@ -104,7 +104,7 @@ public class RedisSocketConfiguration implements RedisConfiguration, DomainSocke
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o) {
 			return true;
 		}

src/main/java/org/springframework/data/redis/connection/RedisStandaloneConfiguration.java

@@ -129,7 +129,7 @@ public class RedisStandaloneConfiguration
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o) {
 			return true;
 		}

src/main/java/org/springframework/data/redis/connection/RedisStaticMasterReplicaConfiguration.java

@@ -155,7 +155,7 @@ public class RedisStaticMasterReplicaConfiguration implements RedisConfiguration
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o) {
 			return true;
 		}

src/main/java/org/springframework/data/redis/connection/RedisStreamCommands.java

@@ -242,7 +242,7 @@ public interface RedisStreamCommands {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o) {
 				return true;
 			}

src/main/java/org/springframework/data/redis/connection/RedisZSetCommands.java

@@ -317,7 +317,7 @@ public interface RedisZSetCommands {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o) {
 				return true;

src/main/java/org/springframework/data/redis/connection/SentinelMasterId.java

@@ -16,6 +16,7 @@
 package org.springframework.data.redis.connection;
 
 import org.springframework.lang.NonNull;
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
@@ -46,7 +47,7 @@ class SentinelMasterId implements NamedNode {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o) {
 			return true;
 		}

src/main/java/org/springframework/data/redis/connection/lettuce/LettuceConnection.java

@@ -1442,7 +1442,7 @@ public class LettuceConnection extends AbstractRedisConnection {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (this == o) {
 				return true;

src/main/java/org/springframework/data/redis/connection/stream/Consumer.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.redis.connection.stream;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
@@ -64,7 +65,7 @@ public class Consumer {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o)
 			return true;
 		if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/connection/stream/ReadOffset.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.redis.connection.stream;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
@@ -81,7 +82,7 @@ public final class ReadOffset {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o)
 			return true;

src/main/java/org/springframework/data/redis/connection/stream/RecordId.java

@@ -154,7 +154,7 @@ public class RecordId {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o)
 			return true;
 		if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/connection/stream/StreamOffset.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.redis.connection.stream;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
@@ -101,7 +102,7 @@ public final class StreamOffset<K> {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o)
 			return true;

src/main/java/org/springframework/data/redis/connection/stream/StreamReadOptions.java

@@ -131,7 +131,7 @@ public class StreamReadOptions {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o)
 			return true;
 		if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/connection/stream/StreamRecords.java

@@ -280,7 +280,7 @@ public class StreamRecords {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 
 			if (o == null) {
 				return false;
@@ -430,7 +430,7 @@ public class StreamRecords {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o)
 				return true;
 			if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/connection/util/ByteArrayWrapper.java

@@ -17,6 +17,8 @@ package org.springframework.data.redis.connection.util;
 
 import java.util.Arrays;
 
+import org.springframework.lang.Nullable;
+
 /**
  * Simple wrapper class used for wrapping arrays so they can be used as keys inside maps.
  *
@@ -32,7 +34,7 @@ public class ByteArrayWrapper {
 		this.hashCode = Arrays.hashCode(array);
 	}
 
-	public boolean equals(Object obj) {
+	public boolean equals(@Nullable Object obj) {
 		if (obj instanceof ByteArrayWrapper) {
 			return Arrays.equals(array, ((ByteArrayWrapper) obj).array);
 		}

src/main/java/org/springframework/data/redis/connection/zset/DefaultTuple.java

@@ -17,6 +17,8 @@ package org.springframework.data.redis.connection.zset;
 
 import java.util.Arrays;
 
+import org.springframework.lang.Nullable;
+
 /**
  * Default implementation for {@link Tuple} interface.
  *
@@ -48,7 +50,7 @@ public class DefaultTuple implements Tuple {
 		return value;
 	}
 
-	public boolean equals(Object obj) {
+	public boolean equals(@Nullable Object obj) {
 		if (this == obj)
 			return true;
 		if (obj == null)

src/main/java/org/springframework/data/redis/connection/zset/Weights.java

@@ -24,6 +24,7 @@ import java.util.stream.Collectors;
 import java.util.stream.DoubleStream;
 import java.util.stream.IntStream;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
@@ -144,7 +145,7 @@ public class Weights {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o) {
 			return true;

src/main/java/org/springframework/data/redis/core/DefaultTypedTuple.java

@@ -59,7 +59,7 @@ public class DefaultTypedTuple<V> implements TypedTuple<V> {
 		return result;
 	}
 
-	public boolean equals(Object obj) {
+	public boolean equals(@Nullable Object obj) {
 		if (this == obj)
 			return true;
 		if (obj == null)

src/main/java/org/springframework/data/redis/core/convert/GeoIndexedPropertyValue.java

@@ -16,6 +16,7 @@
 package org.springframework.data.redis.core.convert;
 
 import org.springframework.data.geo.Point;
+import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
 
 /**
@@ -67,7 +68,7 @@ public class GeoIndexedPropertyValue implements IndexedData {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o) {
 			return true;

src/main/java/org/springframework/data/redis/core/convert/SimpleIndexedPropertyValue.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.redis.core.convert;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
 
 /**
@@ -70,7 +71,7 @@ public class SimpleIndexedPropertyValue implements IndexedData {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o)
 			return true;
 		if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/core/index/IndexDefinition.java

@@ -18,6 +18,7 @@ package org.springframework.data.redis.core.index;
 import java.util.Collection;
 
 import org.springframework.data.util.TypeInformation;
+import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
 
 /**
@@ -93,7 +94,7 @@ public interface IndexDefinition {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o)
 				return true;
 			if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/core/index/RedisIndexDefinition.java

@@ -97,7 +97,7 @@ public abstract class RedisIndexDefinition implements IndexDefinition {
 	}
 
 	@Override
-	public boolean equals(Object obj) {
+	public boolean equals(@Nullable Object obj) {
 
 		if (this == obj) {
 			return true;

src/main/java/org/springframework/data/redis/core/index/SpelIndexDefinition.java

@@ -17,6 +17,7 @@ package org.springframework.data.redis.core.index;
 
 import org.springframework.data.redis.core.convert.SpelIndexResolver;
 import org.springframework.expression.spel.standard.SpelExpression;
+import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
 
 /**
@@ -54,7 +55,7 @@ public class SpelIndexDefinition extends RedisIndexDefinition {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o)
 			return true;
 		if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/core/types/RedisClientInfo.java

@@ -248,7 +248,7 @@ public class RedisClientInfo {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o)
 			return true;

src/main/java/org/springframework/data/redis/domain/geo/BoundingBox.java

@@ -19,6 +19,7 @@ import org.springframework.data.geo.Distance;
 import org.springframework.data.geo.Metric;
 import org.springframework.data.geo.Shape;
 import org.springframework.data.redis.connection.RedisGeoCommands;
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
@@ -89,7 +90,7 @@ public class BoundingBox implements Shape {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 		if (this == o) {
 			return true;
 		}

src/main/java/org/springframework/data/redis/domain/geo/GeoLocation.java

@@ -17,6 +17,7 @@ package org.springframework.data.redis.domain.geo;
 
 import org.springframework.data.geo.Point;
 import org.springframework.data.redis.connection.RedisGeoCommands;
+import org.springframework.lang.Nullable;
 import org.springframework.util.ObjectUtils;
 
 /**
@@ -42,7 +43,7 @@ public class GeoLocation<T> {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o) {
 			return true;

src/main/java/org/springframework/data/redis/domain/geo/GeoReference.java

@@ -18,6 +18,7 @@ package org.springframework.data.redis.domain.geo;
 import org.springframework.data.geo.Circle;
 import org.springframework.data.geo.Point;
 import org.springframework.data.redis.connection.RedisGeoCommands;
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
@@ -128,7 +129,7 @@ public interface GeoReference<T> {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o) {
 				return true;
 			}
@@ -173,7 +174,7 @@ public interface GeoReference<T> {
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o) {
 				return true;
 			}

src/main/java/org/springframework/data/redis/listener/ChannelTopic.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.redis.listener;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
@@ -65,7 +66,7 @@ public class ChannelTopic implements Topic {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o)
 			return true;

src/main/java/org/springframework/data/redis/listener/PatternTopic.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.redis.listener;
 
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ObjectUtils;
 
@@ -66,7 +67,7 @@ public class PatternTopic implements Topic {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (this == o)
 			return true;

src/main/java/org/springframework/data/redis/repository/query/RedisOperationChain.java

@@ -125,7 +125,7 @@ public class RedisOperationChain {
 		}
 
 		@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;

src/main/java/org/springframework/data/redis/stream/DefaultStreamMessageListenerContainer.java

@@ -38,6 +38,7 @@ import org.springframework.data.redis.core.RedisCallback;
 import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.data.redis.core.StreamOperations;
 import org.springframework.data.redis.serializer.RedisSerializer;
+import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 import org.springframework.util.ErrorHandler;
 import org.springframework.util.ObjectUtils;
@@ -301,7 +302,7 @@ class DefaultStreamMessageListenerContainer<K, V extends Record<K, ?>> implement
 		}
 
 		@Override
-		public boolean equals(Object o) {
+		public boolean equals(@Nullable Object o) {
 			if (this == o)
 				return true;
 			if (o == null || getClass() != o.getClass())

src/main/java/org/springframework/data/redis/support/collections/AbstractRedisCollection.java

@@ -139,7 +139,7 @@ public abstract class AbstractRedisCollection<E> extends AbstractCollection<E> i
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (o == this)
 			return true;

src/main/java/org/springframework/data/redis/support/collections/DefaultRedisMap.java

@@ -166,7 +166,7 @@ public class DefaultRedisMap<K, V> implements RedisMap<K, V> {
 	}
 
 	@Override
-	public boolean equals(Object o) {
+	public boolean equals(@Nullable Object o) {
 
 		if (o == this)
 			return true;