DATAREDIS-444 - Polishing.

Add author name. Update license header. Reformat code. Add JavaDoc to hash operations.

Original pull request: #184.

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2014 the original author or authors.
+ * Copyright 2011-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,38 +25,120 @@ import java.util.Set;
  *
  * @author Costin Leau
  * @author Christoph Strobl
+ * @author Ninad Divadkar
  */
 public interface BoundHashOperations<H, HK, HV> extends BoundKeyOperations<H> {
 
+	/**
+	 * @return
+	 */
 	RedisOperations<H, ?> getOperations();
 
+	/**
+	 * Determine if given hash {@code key} exists.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @return
+	 */
 	Boolean hasKey(Object key);
 
+	/**
+	 * Increment {@code value} of a hash {@code key} by the given {@code delta}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param delta
+	 * @return
+	 */
 	Long increment(HK key, long delta);
 
+	/**
+	 * Increment {@code value} of a hash {@code key} by the given {@code delta}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param delta
+	 * @return
+	 */
 	Double increment(HK key, double delta);
 
+	/**
+	 * Get value for given {@code key} from the hash.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @return
+	 */
 	HV get(Object key);
 
+	/**
+	 * Set the {@code value} of a hash {@code key}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param value
+	 */
 	void put(HK key, HV value);
 
+	/**
+	 * Set the {@code value} of a hash {@code key} only if {@code key} does not exist.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param value
+	 * @return
+	 */
 	Boolean putIfAbsent(HK key, HV value);
 
+	/**
+	 * Get values for given {@code keys} from the hash.
+	 *
+	 * @param keys must not be {@literal null}.
+	 * @return
+	 */
 	List<HV> multiGet(Collection<HK> keys);
 
+	/**
+	 * Set multiple hash fields to multiple values using data provided in {@code m}.
+	 *
+	 * @param m must not be {@literal null}.
+	 */
 	void putAll(Map<? extends HK, ? extends HV> m);
 
+	/**
+	 * Get key set (fields) of the hash.
+	 *
+	 * @return
+	 */
 	Set<HK> keys();
 
+	/**
+	 * Get entry set (values) of hash.
+	 *
+	 * @return
+	 */
 	List<HV> values();
 
+	/**
+	 * Get size of the hash.
+	 *
+	 * @return
+	 */
 	Long size();
 
+	/**
+	 * Delete given hash {@code keys}.
+	 *
+	 * @param keys must not be {@literal null}.
+	 * @return
+	 */
 	Long delete(Object... keys);
 
+	/**
+	 * Get entire hash.
+	 *
+	 * @return
+	 */
 	Map<HK, HV> entries();
 
 	/**
+	 * Use a {@link Cursor} to iterate over entries in the hash.
+	 *
 	 * @param options
 	 * @return
 	 * @since 1.4

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2014 the original author or authors.
+ * Copyright 2011-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,6 +28,7 @@ import org.springframework.data.redis.connection.DataType;
  *
  * @author Costin Leau
  * @author Christoph Strobl
+ * @author Ninad Divadkar
  */
 class DefaultBoundHashOperations<H, HK, HV> extends DefaultBoundKeyOperations<H> implements
 		BoundHashOperations<H, HK, HV> {

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2014 the original author or authors.
+ * Copyright 2011-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -32,6 +32,7 @@ import org.springframework.data.redis.connection.RedisConnection;
  *
  * @author Costin Leau
  * @author Christoph Strobl
+ * @author Ninad Divadkar
  */
 class DefaultHashOperations<K, HK, HV> extends AbstractOperations<K, Object> implements HashOperations<K, HK, HV> {
 

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2014 the original author or authors.
+ * Copyright 2011-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,40 +25,135 @@ import java.util.Set;
  *
  * @author Costin Leau
  * @author Christoph Strobl
+ * @author Ninad Divadkar
  */
 public interface HashOperations<H, HK, HV> {
 
+	/**
+	 * Delete given hash {@code hashKeys}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param hashKeys must not be {@literal null}.
+	 * @return
+	 */
 	Long delete(H key, Object... hashKeys);
 
+	/**
+	 * Determine if given hash {@code hashKey} exists.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param hashKey must not be {@literal null}.
+	 * @return
+	 */
 	Boolean hasKey(H key, Object hashKey);
 
+	/**
+	 * Get value for given {@code hashKey} from hash at {@code key}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param hashKey must not be {@literal null}.
+	 * @return
+	 */
 	HV get(H key, Object hashKey);
 
+	/**
+	 * Get values for given {@code hashKeys} from hash at {@code key}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param hashKeys must not be {@literal null}.
+	 * @return
+	 */
 	List<HV> multiGet(H key, Collection<HK> hashKeys);
 
+	/**
+	 * Increment {@code value} of a hash {@code hashKey} by the given {@code delta}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param hashKey must not be {@literal null}.
+	 * @param delta
+	 * @return
+	 */
 	Long increment(H key, HK hashKey, long delta);
 
+	/**
+	 * Increment {@code value} of a hash {@code hashKey} by the given {@code delta}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param hashKey must not be {@literal null}.
+	 * @param delta
+	 * @return
+	 */
 	Double increment(H key, HK hashKey, double delta);
 
+	/**
+	 * Get key set (fields) of hash at {@code key}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @return
+	 */
 	Set<HK> keys(H key);
 
+	/**
+	 * Get size of hash at {@code key}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @return
+	 */
 	Long size(H key);
 
+	/**
+	 * Set multiple hash fields to multiple values using data provided in {@code m}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param m must not be {@literal null}.
+	 */
 	void putAll(H key, Map<? extends HK, ? extends HV> m);
 
+	/**
+	 * Set the {@code value} of a hash {@code hashKey}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param hashKey must not be {@literal null}.
+	 * @param value
+	 */
 	void put(H key, HK hashKey, HV value);
 
+	/**
+	 * Set the {@code value} of a hash {@code hashKey} only if {@code hashKey} does not exist.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @param hashKey must not be {@literal null}.
+	 * @param value
+	 * @return
+	 */
 	Boolean putIfAbsent(H key, HK hashKey, HV value);
 
+	/**
+	 * Get entry set (values) of hash at {@code key}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @return
+	 */
 	List<HV> values(H key);
 
+	/**
+	 * Get entire hash stored at {@code key}.
+	 *
+	 * @param key must not be {@literal null}.
+	 * @return
+	 */
 	Map<HK, HV> entries(H key);
 
+	/**
+	 * @return
+	 */
 	RedisOperations<H, ?> getOperations();
 
 	/**
+	 * Use a {@link Cursor} to iterate over entries in hash at {@code key}.
+	 *
 	 * @since 1.4
-	 * @param key
+	 * @param key must not be {@literal null}.
 	 * @param options
 	 * @return
 	 */

src/test/java/org/springframework/data/redis/core/DefaultHashOperationsTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2014 the original author or authors.
+ * Copyright 2013-2016 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -44,6 +44,7 @@ import org.springframework.test.annotation.IfProfileValue;
  * 
  * @author Jennifer Hickey
  * @author Christoph Strobl
+ * @author Ninad Divadkar
  * @param <K> Key type
  * @param <HK> Hash key type
  * @param <HV> Hash value type
@@ -136,7 +137,7 @@ public class DefaultHashOperationsTests<K, HK, HV> {
 		hashOps.put(key, key2, val2);
 		Long numDeleted = hashOps.delete(key, key1, key2);
 		assertTrue(hashOps.keys(key).isEmpty());
-        assertEquals(2L, numDeleted.longValue());
+		assertEquals(2L, numDeleted.longValue());
 	}
 
 	/**