DATAREDIS-668 - Polishing.

Update comments, fix/add missing Javadoc and simplify implementation. Original pull request: spring-projects#259.

Author: christophstrobl

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

@@ -74,7 +74,7 @@ public interface RedisSetCommands {
  * Move {@code value} from {@code srcKey} to {@code destKey}
  *
  * @param srcKey must not be {@literal null}.
- * @param destKey  must not be {@literal null}.
+ * @param destKey must not be {@literal null}.
  * @param value
  * @return
  * @see <a href="http://redis.io/commands/smove">Redis Documentation: SMOVE</a>
@@ -84,7 +84,7 @@ public interface RedisSetCommands {
 /**
  * Get size of set at {@code key}.
  *
- * @param key  must not be {@literal null}.
+ * @param key must not be {@literal null}.
  * @return
  * @see <a href="http://redis.io/commands/scard">Redis Documentation: SCARD</a>
  */
@@ -103,7 +103,7 @@ public interface RedisSetCommands {
 /**
  * Returns the members intersecting all given sets at {@code keys}.
  *
- * @param keys  must not be {@literal null}.
+ * @param keys must not be {@literal null}.
  * @return
  * @see <a href="http://redis.io/commands/sinter">Redis Documentation: SINTER</a>
  */
@@ -132,7 +132,7 @@ public interface RedisSetCommands {
  * Union all sets at given {@code keys} and store result in {@code destKey}.
  *
  * @param destKey must not be {@literal null}.
- * @param keys  must not be {@literal null}.
+ * @param keys must not be {@literal null}.
  * @return
  * @see <a href="http://redis.io/commands/sunionstore">Redis Documentation: SUNIONSTORE</a>
  */
@@ -169,7 +169,7 @@ public interface RedisSetCommands {
 /**
  * Get random element from set at {@code key}.
  *
- * @param key  must not be {@literal null}.
+ * @param key must not be {@literal null}.
  * @return
  * @see <a href="http://redis.io/commands/srandmember">Redis Documentation: SRANDMEMBER</a>
  */

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

@@ -1289,7 +1289,7 @@ public interface StringTuple extends Tuple {
  * @see <a href="http://redis.io/commands/zrangebyscore">Redis Documentation: ZRANGEBYSCORE</a>
  * @see RedisZSetCommands#zRangeByScore(byte[], String, String)
  */
-Set<byte[]> zRangeByScore(String key, String min, String max);
+Set<String> zRangeByScore(String key, String min, String max);
 
 /**
  * Get elements in range from {@code start} to {@code end} where score is between {@code min} and {@code max} from
@@ -1305,7 +1305,7 @@ public interface StringTuple extends Tuple {
  * @see <a href="http://redis.io/commands/zrangebyscore">Redis Documentation: ZRANGEBYSCORE</a>
  * @see RedisZSetCommands#zRangeByScore(byte[], double, double, long, long)
  */
-Set<byte[]> zRangeByScore(String key, String min, String max, long offset, long count);
+Set<String> zRangeByScore(String key, String min, String max, long offset, long count);
 
 /**
  * Get all the elements in the sorted set at {@literal key} in lexicographical ordering.