JedisPool / JedisSentinelPool resets returning object's state (watched,

multi)

* BinaryClient / BinaryJedis : added feature to reset its state
(watched, multi)
* JedisPool / JedisSentinelPool : calls new feature (reset state) when
Jedis object returns to pool
* Unit Test included

src/main/java/redis/clients/jedis/BinaryClient.java

@@ -29,15 +29,21 @@ public class BinaryClient extends Connection {
     }
 
     private boolean isInMulti;
-
+    
     private String password;
 
     private long db;
 
+	private boolean isInWatch;
+
     public boolean isInMulti() {
 	return isInMulti;
     }
 
+    public boolean isInWatch() {
+    return isInWatch;
+    }
+
     public BinaryClient(final String host) {
 	super(host);
     }
@@ -447,19 +453,23 @@ public class BinaryClient extends Connection {
     public void discard() {
 	sendCommand(DISCARD);
 	isInMulti = false;
+	isInWatch = false;
     }
 
     public void exec() {
 	sendCommand(EXEC);
 	isInMulti = false;
+	isInWatch = false;
     }
 
     public void watch(final byte[]... keys) {
 	sendCommand(WATCH, keys);
+	isInWatch = true;
     }
 
     public void unwatch() {
 	sendCommand(UNWATCH);
+	isInWatch = false;
     }
 
     public void sort(final byte[] key) {
@@ -912,6 +922,14 @@ public class BinaryClient extends Connection {
 	db = 0;
 	super.disconnect();
     }
+    
+    public void resetState() {
+    	if (isInMulti())
+    		discard();
+    	
+    	if (isInWatch())
+    		unwatch();
+    }
 
     private void sendEvalCommand(Command command, byte[] script,
 	    byte[] keyCount, byte[][] params) {