DATAKV-44

+ update persist signature

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/core/BoundKeyOperations.java

@@ -69,8 +69,9 @@ public interface BoundKeyOperations<K> {
 
 	/**
 	 * Removes the expiration (if any) of the key.
+	 * @return true if expiration was removed, false otherwise
 	 */
-	void persist();
+	Boolean persist();
 
 	/**
 	 * Renames the key.

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/core/DefaultBoundKeyOperations.java

@@ -60,8 +60,8 @@ abstract class DefaultBoundKeyOperations<K> implements BoundKeyOperations<K> {
 	}
 
 	@Override
-	public void persist() {
-		ops.persist(key);
+	public Boolean persist() {
+		return ops.persist(key);
 	}
 
 	@Override

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/support/atomic/RedisAtomicInteger.java

@@ -281,8 +281,8 @@ public class RedisAtomicInteger extends Number implements Serializable, BoundKey
 	}
 
 	@Override
-	public void persist() {
-		generalOps.persist(key);
+	public Boolean persist() {
+		return generalOps.persist(key);
 	}
 
 	@Override

spring-data-redis/src/main/java/org/springframework/data/keyvalue/redis/support/atomic/RedisAtomicLong.java

@@ -284,8 +284,8 @@ public class RedisAtomicLong extends Number implements Serializable, BoundKeyOpe
 	}
 
 	@Override
-	public void persist() {
-		generalOps.persist(key);
+	public Boolean persist() {
+		return generalOps.persist(key);
 	}
 
 	@Override

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

@@ -135,8 +135,8 @@ public abstract class AbstractRedisCollection<E> extends AbstractCollection<E> i
 	}
 
 	@Override
-	public void persist() {
-		operations.persist(key);
+	public Boolean persist() {
+		return operations.persist(key);
 	}
 
 	@Override

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

@@ -310,8 +310,8 @@ public class DefaultRedisMap<K, V> implements RedisMap<K, V> {
 	}
 
 	@Override
-	public void persist() {
-		hashOps.persist();
+	public Boolean persist() {
+		return hashOps.persist();
 	}