+ add more operations on ZSet contract

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

@@ -34,6 +34,8 @@ public interface BoundZSetOperations<K, V> extends KeyBound<K> {
 
 	Set<V> rangeByScore(double min, double max);
 
+	Set<V> reverseRange(int start, int end);
+
 	void removeRange(int start, int end);
 
 	void removeRangeByScore(double min, double max);
@@ -44,9 +46,11 @@ public interface BoundZSetOperations<K, V> extends KeyBound<K> {
 
 	Integer rank(Object o);
 
+	Integer reverseRank(Object o);
+
 	boolean remove(Object o);
 
 	int size();
 
-	Set<V> reverseRange(int start, int end);
+	Double score(Object o);
 }

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

@@ -62,6 +62,16 @@ class DefaultBoundZSetOperations<K, V> extends DefaultKeyBound<K> implements Bou
 		return ops.rank(getKey(), o);
 	}
 
+	@Override
+	public Integer reverseRank(Object o) {
+		return ops.reverseRank(getKey(), o);
+	}
+
+	@Override
+	public Double score(Object o) {
+		return ops.score(getKey(), o);
+	}
+
 	@Override
 	public boolean remove(Object o) {
 		return ops.remove(getKey(), o);

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

@@ -743,6 +743,19 @@ public class RedisTemplate<K, V> extends RedisAccessor implements RedisOperation
 			}, true);
 		}
 
+		@Override
+		public Integer reverseRank(K key, Object o) {
+			final byte[] rawKey = rawKey(key);
+			final byte[] rawValue = rawValue(o);
+
+			return execute(new RedisCallback<Integer>() {
+				@Override
+				public Integer doInRedis(RedisConnection connection) {
+					return connection.zRevRank(rawKey, rawValue);
+				}
+			}, true);
+		}
+
 		@Override
 		public boolean remove(K key, Object o) {
 			final byte[] rawKey = rawKey(key);
@@ -794,6 +807,19 @@ public class RedisTemplate<K, V> extends RedisAccessor implements RedisOperation
 			return values(rawValues, Set.class);
 		}
 
+		@Override
+		public Double score(K key, Object o) {
+			final byte[] rawKey = rawKey(key);
+			final byte[] rawValue = rawValue(o);
+
+			return execute(new RedisCallback<Double>() {
+				@Override
+				public Double doInRedis(RedisConnection connection) {
+					return connection.zScore(rawKey, rawValue);
+				}
+			}, true);
+		}
+
 		@Override
 		public int size(K key) {
 			final byte[] rawKey = rawKey(key);

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

@@ -31,6 +31,8 @@ public interface ZSetOperations<K, V> {
 
 	Set<V> rangeByScore(K key, double min, double max);
 
+	Set<V> reverseRange(K key, int start, int end);
+
 	void removeRange(K key, int start, int end);
 
 	void removeRangeByScore(K key, double min, double max);
@@ -41,11 +43,13 @@ public interface ZSetOperations<K, V> {
 
 	Integer rank(K key, Object o);
 
+	Integer reverseRank(K key, Object o);
+
+	Double score(K key, Object o);
+
 	boolean remove(K key, Object o);
 
 	int size(K key);
 
-	Set<V> reverseRange(K key, int start, int end);
-
 	RedisOperations<K, V> getOperations();
 }