DATAREDIS-333 - Use binary version of Jedis.evalsha()

* JedisConnection.eval() uses binary version of Jedis.eval()
* but JedisConnection.evalsha() uses string version of Jedis.evalsha()
* this commit changes JedisConnection.evalsha() to use binary version of Jedis.evalsha()

---

Original Pull Request: #91
CLA: 88220140729064528 (Jungtaek Lim)

src/main/java/org/springframework/data/redis/connection/jedis/JedisConnection.java

@@ -31,8 +31,8 @@ import java.util.concurrent.TimeUnit;
 import org.springframework.core.convert.converter.Converter;
 import org.springframework.dao.DataAccessException;
 import org.springframework.data.redis.ExceptionTranslationStrategy;
-import org.springframework.data.redis.RedisConnectionFailureException;
 import org.springframework.data.redis.FallbackExceptionTranslationStrategy;
+import org.springframework.data.redis.RedisConnectionFailureException;
 import org.springframework.data.redis.connection.DataType;
 import org.springframework.data.redis.connection.FutureResult;
 import org.springframework.data.redis.connection.MessageListener;
@@ -73,6 +73,7 @@ import redis.clients.util.Pool;
  * @author Jennifer Hickey
  * @author Christoph Strobl
  * @author Thomas Darimont
+ * @author Jungtaek Lim
  */
 public class JedisConnection implements RedisConnection {
 
@@ -2793,8 +2794,8 @@ public class JedisConnection implements RedisConnection {
 			throw new UnsupportedOperationException();
 		}
 		try {
-			return (T) new JedisScriptReturnConverter(returnType).convert(jedis.evalsha(scriptSha1, numKeys,
-					JedisConverters.toStrings(keysAndArgs)));
+			return (T) new JedisScriptReturnConverter(returnType).convert(jedis.evalsha(JedisConverters.toBytes(scriptSha1),
+					numKeys, keysAndArgs));
 		} catch (Exception ex) {
 			throw convertJedisAccessException(ex);
 		}

src/main/java/org/springframework/data/redis/connection/jedis/JedisConverters.java

@@ -48,6 +48,7 @@ import redis.clients.util.SafeEncoder;
  * 
  * @author Jennifer Hickey
  * @author Christoph Strobl
+ * @author Jungtaek Lim
  */
 abstract public class JedisConverters extends Converters {
 
@@ -117,6 +118,10 @@ abstract public class JedisConverters extends Converters {
 		return String.valueOf(source).getBytes();
 	}
 
+	public static byte[] toBytes(String source) {
+		return STRING_TO_BYTES.convert(source);
+	}
+
 	public static String toString(byte[] source) {
 		return source == null ? null : SafeEncoder.encode(source);
 	}