add pipeline exception for Rjc

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

@@ -93,7 +93,8 @@ public interface RedisConnection extends RedisCommands {
 	 * Executes the commands in the pipeline and returns their result.
 	 * If the connection is not pipelined, an empty collection is returned.
 	 * 
+	 * @throws RedisPipelineException if the pipeline contains any incorrect/invalid statements
 	 * @return the result of the executed commands.
 	 */
-	List<Object> closePipeline();
+	List<Object> closePipeline() throws RedisPipelineException;
 }

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

@@ -23,7 +23,7 @@ import org.springframework.dao.InvalidDataAccessResourceUsageException;
 
 /**
  * Exception thrown when executing/closing a pipeline that contains one or multiple invalid/incorrect statements.
- * The exception contains the pipeline result, allowing for analysis and tracing.
+ * The exception might also contain the pipeline result (if the driver returns it), allowing for analysis and tracing.
  * <p/>
  * Typically, the first exception returned by the pipeline is used as the <i>cause</i> of this exception for easier
  * debugging.  
@@ -56,6 +56,15 @@ public class RedisPipelineException extends InvalidDataAccessResourceUsageExcept
 		this("Pipeline contained one or more invalid commands", cause, pipelineResult);
 	}
 
+	/**
+	 * Constructs a new <code>RedisPipelineException</code> instance using a default message
+	 * and an empty pipeline result list.
+	 *
+	 * @param cause the cause
+	 */
+	public RedisPipelineException(Exception cause) {
+		this("Pipeline contained one or more invalid commands", cause, Collections.emptyList());
+	}
 
 	/**
 	 * Constructs a new <code>RedisPipelineException</code> instance.
@@ -69,7 +78,7 @@ public class RedisPipelineException extends InvalidDataAccessResourceUsageExcept
 	}
 
 	/**
-	 * Returns the result of the pipeline that caused the exception.
+	 * Optionally returns the result of the pipeline that caused the exception.
 	 * Typically contains both the results of the successful statements but also
 	 * the exceptions of the incorrect ones. 
 	 * 

src/main/java/org/springframework/data/redis/connection/rjc/RjcConnection.java

@@ -34,6 +34,7 @@ import org.springframework.data.redis.RedisSystemException;
 import org.springframework.data.redis.connection.DataType;
 import org.springframework.data.redis.connection.MessageListener;
 import org.springframework.data.redis.connection.RedisConnection;
+import org.springframework.data.redis.connection.RedisPipelineException;
 import org.springframework.data.redis.connection.RedisSubscribedConnectionException;
 import org.springframework.data.redis.connection.SortParameters;
 import org.springframework.data.redis.connection.Subscription;
@@ -142,9 +143,10 @@ public class RjcConnection implements RedisConnection {
 	@SuppressWarnings("unchecked")
 	public List<Object> closePipeline() {
 		if (pipeline != null) {
-			List execute = client.getAll();
-			if (execute != null && !execute.isEmpty()) {
-				return execute;
+			try {
+				List execute = client.getAll();
+			} catch (Exception ex) {
+				throw new RedisPipelineException(convertRjcAccessException(ex));
 			}
 		}
 		return Collections.emptyList();