View Javadoc

1   /*
2    * $Id: JMSMessageToObject.java 7976 2007-08-21 14:26:13Z dirk.olmes $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSource, Inc.  All rights reserved.  http://www.mulesource.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.providers.jms.transformers;
12  
13  import org.mule.umo.transformer.TransformerException;
14  import org.mule.util.ClassUtils;
15  
16  import javax.jms.Message;
17  
18  /**
19   * <code>JMSMessageToObject</code> Will convert a <code>javax.jms.Message</code>
20   * or sub-type into an object by extracting the message payload. Users of this
21   * transformer can set different return types on the transform to control the way it
22   * behaves.
23   * <ul>
24   * <li>javax.jms.TextMessage - java.lang.String</li>
25   * <li>javax.jms.ObjectMessage - java.lang.Object</li>
26   * <li>javax.jms.BytesMessage - Byte[]. Note that the transformer will check if the
27   * payload is compressed and automatically uncompress the message.</li>
28   * <li>javax.jms.MapMessage - java.util.Map</li>
29   * <li>javax.jms.StreamMessage - java.util.Vector of objects from the Stream
30   * Message.</li>
31   * </ul>
32   */
33  
34  public class JMSMessageToObject extends AbstractJmsTransformer
35  {
36  
37      public JMSMessageToObject()
38      {
39          super();
40          registerSourceType(Message.class);
41      }
42  
43      public Object doTransform(Object src, String encoding) throws TransformerException
44      {
45          try
46          {
47              if (logger.isDebugEnabled())
48              {
49                  logger.debug("Source object is " + ClassUtils.getSimpleName(src.getClass()));
50              }
51  
52              Object result = transformFromMessage((Message)src);
53  
54              if (logger.isDebugEnabled())
55              {
56                  logger.debug("Resulting object is " + ClassUtils.getSimpleName(result.getClass()));
57              }
58  
59              return result;
60          }
61          catch (Exception e)
62          {
63              throw new TransformerException(this, e);
64          }
65      }
66  
67  }