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1   /*
2    * $Id: MessageProcessor.java 20320 2010-11-24 15:03:31Z dfeist $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
5    *
6    * The software in this package is published under the terms of the CPAL v1.0
7    * license, a copy of which has been included with this distribution in the
8    * LICENSE.txt file.
9    */
10  
11  package org.mule.api.processor;
12  
13  import org.mule.api.MuleEvent;
14  import org.mule.api.MuleException;
15  
16  /**
17   * Processes {@link MuleEvent}'s. Implementations that do not mutate the
18   * {@link MuleEvent} or pass it on to another MessageProcessor should return the
19   * MuleEvent they receive.
20   * 
21   * @since 3.0
22   */
23  public interface MessageProcessor
24  {
25      /**
26       * Invokes the MessageProcessor.
27       * 
28       * @param event MuleEvent to be processed
29       * @return optional response MuleEvent
30       * @throws MuleException
31       */
32      MuleEvent process(MuleEvent event) throws MuleException;
33  }