DATAREDIS-843 - Polishing.

Remove unnecessary unboxing and final keywords from arguments in method signatures.

Original Pull Request: #349

src/main/java/org/springframework/data/redis/support/atomic/RedisAtomicDouble.java

@@ -150,7 +150,7 @@ public class RedisAtomicDouble extends Number implements Serializable, BoundKeyO
 
 		Double value = operations.get(key);
 		if (value != null) {
-			return value.doubleValue();
+			return value;
 		}
 
 		throw new DataRetrievalFailureException(String.format("The key '%s' seems to no longer exist.", key));
@@ -175,7 +175,7 @@ public class RedisAtomicDouble extends Number implements Serializable, BoundKeyO
 
 		Double value = operations.getAndSet(key, newValue);
 
-		return value != null ? value.doubleValue() : 0;
+		return value != null ? value : 0;
 	}
 
 	/**
@@ -186,7 +186,7 @@ public class RedisAtomicDouble extends Number implements Serializable, BoundKeyO
 	 * @return {@literal true} if successful. {@literal false} indicates that the actual value was not equal to the
 	 *         expected value.
 	 */
-	public boolean compareAndSet(final double expect, final double update) {
+	public boolean compareAndSet(double expect, double update) {
 		return generalOps.execute(new CompareAndSet<>(this::get, this::set, key, expect, update));
 	}
 
@@ -214,7 +214,7 @@ public class RedisAtomicDouble extends Number implements Serializable, BoundKeyO
 	 * @param delta the value to add
 	 * @return the previous value
 	 */
-	public double getAndAdd(final double delta) {
+	public double getAndAdd(double delta) {
 		return addAndGet(delta) - delta;
 	}
 

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

@@ -148,7 +148,7 @@ public class RedisAtomicInteger extends Number implements Serializable, BoundKey
 
 		Integer value = operations.get(key);
 		if (value != null) {
-			return value.intValue();
+			return value;
 		}
 
 		throw new DataRetrievalFailureException(String.format("The key '%s' seems to no longer exist.", key));
@@ -173,7 +173,7 @@ public class RedisAtomicInteger extends Number implements Serializable, BoundKey
 
 		Integer value = operations.getAndSet(key, newValue);
 
-		return value != null ? value.intValue() : 0;
+		return value != null ? value : 0;
 	}
 
 	/**
@@ -212,7 +212,7 @@ public class RedisAtomicInteger extends Number implements Serializable, BoundKey
 	 * @param delta the value to add.
 	 * @return the previous value.
 	 */
-	public int getAndAdd(final int delta) {
+	public int getAndAdd(int delta) {
 		return addAndGet(delta) - delta;
 	}
 

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

@@ -155,7 +155,7 @@ public class RedisAtomicLong extends Number implements Serializable, BoundKeyOpe
 
 		Long value = operations.get(key);
 		if (value != null) {
-			return value.longValue();
+			return value;
 		}
 
 		throw new DataRetrievalFailureException(String.format("The key '%s' seems to no longer exist.", key));
@@ -180,7 +180,7 @@ public class RedisAtomicLong extends Number implements Serializable, BoundKeyOpe
 
 		Long value = operations.getAndSet(key, newValue);
 
-		return value != null ? value.longValue() : 0;
+		return value != null ? value : 0;
 	}
 
 	/**
@@ -219,7 +219,7 @@ public class RedisAtomicLong extends Number implements Serializable, BoundKeyOpe
 	 * @param delta the value to add.
 	 * @return the previous value.
 	 */
-	public long getAndAdd(final long delta) {
+	public long getAndAdd(long delta) {
 		return addAndGet(delta) - delta;
 	}