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1   /*
2    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
3    * The software in this package is published under the terms of the CPAL v1.0
4    * license, a copy of which has been included with this distribution in the
5    * LICENSE.txt file.
6    */
7   package org.mule.processor;
8   
9   import org.mule.api.MuleEvent;
10  import org.mule.api.MuleException;
11  import org.mule.api.processor.MessageProcessor;
12  import org.mule.util.ObjectUtils;
13  
14  /**
15   * Implementation of {@link MessageProcessor} that dynamically chooses and uses
16   * another {@link MessageProcessor}
17   */
18  public abstract class AbstractDynamicMessageProcessor implements MessageProcessor
19  {
20      public MuleEvent process(MuleEvent event) throws MuleException
21      {
22          return resolveMessageProcessor(event).process(event);
23      }
24  
25      /**
26       * Determines which MessageProcessor should be used. Implementations may choose
27       * to use a message property, configure this
28       */
29      protected abstract MessageProcessor resolveMessageProcessor(MuleEvent event) throws MuleException;
30  
31      @Override
32      public String toString()
33      {
34          return ObjectUtils.toString(this);
35      }
36  }