Adding keySize functionality for MultiMaps - Improvements

src/main/java/org/redisson/RedissonListMultimap.java

@@ -66,18 +66,7 @@ public class RedissonListMultimap<K, V> extends RedissonMultimap<K, V> implement
                 Arrays.<Object>asList(getName()));
     }
     
-    public Future<Integer> keySizeAsync() {
-    	return commandExecutor.evalReadAsync(getName(), codec, RedisCommands.EVAL_INTEGER,
-                "local keys = redis.call('hgetall', KEYS[1]); " +
-                "local size = 0; " +
-                "for i, v in ipairs(keys) do " +
-                    "if i % 2 == 0 then " +
-                        "size = size + 1; " +
-                    "end;" +
-                "end; " +
-                "return size; ",
-                Arrays.<Object>asList(getName()));
-    }
+    
 
     public Future<Boolean> containsKeyAsync(Object key) {
         try {

src/main/java/org/redisson/RedissonMultimap.java

@@ -255,8 +255,12 @@ public abstract class RedissonMultimap<K, V> extends RedissonExpirable implement
                 "return redis.call('persist', KEYS[1]); ",
                 Arrays.<Object>asList(getName()));
     }
-
-
+    
+    public Future<Integer> keySizeAsync() {
+    	return commandExecutor.readAsync(getName(), LongCodec.INSTANCE, RedisCommands.HLEN, getName());
+    }
+    
+    
     MapScanResult<ScanObjectEntry, ScanObjectEntry> scanIterator(InetSocketAddress client, long startPos) {
         Future<MapScanResult<ScanObjectEntry, ScanObjectEntry>> f = commandExecutor.readAsync(client, getName(), new ScanCodec(codec, StringCodec.INSTANCE), RedisCommands.HSCAN, getName(), startPos);
         return get(f);

src/main/java/org/redisson/RedissonSetMultimap.java

@@ -69,18 +69,7 @@ public class RedissonSetMultimap<K, V> extends RedissonMultimap<K, V> implements
                 Arrays.<Object>asList(getName()));
     }
 
-    public Future<Integer> keySizeAsync() {
-    	return commandExecutor.evalReadAsync(getName(), codec, RedisCommands.EVAL_INTEGER,
-                "local keys = redis.call('hgetall', KEYS[1]); " +
-                "local size = 0; " +
-                "for i, v in ipairs(keys) do " +
-                    "if i % 2 == 0 then " +
-                        "size = size + 1; " +
-                    "end;" +
-                "end; " +
-                "return size; ",
-                Arrays.<Object>asList(getName()));
-    }
+    
     
     public Future<Boolean> containsKeyAsync(Object key) {
         try {