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1   /*
2    * $Id: OracleJmsMessageAdapter.java 7963 2007-08-21 08:53:15Z 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.oracle.jms;
12  
13  import org.mule.providers.jms.JmsMessageAdapter;
14  import org.mule.umo.MessagingException;
15  
16  import oracle.jms.AdtMessage;
17  import oracle.xdb.XMLType;
18  
19  /**
20   * If the message payload is XML, returns the XML as a string. If the message payload
21   * is an ADT, simply returns {@code Object.toString()} in order to avoid a null
22   * pointer exception. Any other message is handled by the standard
23   * {@code JmsMessageAdapter}.
24   */
25  public class OracleJmsMessageAdapter extends JmsMessageAdapter
26  {
27  
28      /**
29       * Serial version
30       */
31      private static final long serialVersionUID = -5304537031626649816L;
32  
33      public OracleJmsMessageAdapter(Object message) throws MessagingException
34      {
35          super(message);
36      }
37  
38      /**
39       * If the message payload is XML, returns the XML as an array of bytes. If the
40       * message payload is an ADT, simply returns {@code Object.toString().getBytes()}
41       * in order to avoid a null pointer exception. Any other message is handled by
42       * the standard {@code JmsMessageAdapter}
43       * 
44       * @see JmsMessageAdapter#getPayloadAsBytes
45       */
46      public byte[] getPayloadAsBytes() throws Exception
47      {
48          Object jmsMessage = getPayload();
49          if (jmsMessage instanceof AdtMessage)
50          {
51              Object adtMessage = ((AdtMessage)jmsMessage).getAdtPayload();
52              if (adtMessage instanceof XMLType)
53              {
54                  return ((XMLType)adtMessage).getBytesValue();
55              }
56              else
57              {
58                  return adtMessage.toString().getBytes(getEncoding());
59              }
60          }
61          else
62          {
63              return super.getPayloadAsBytes();
64          }
65      }
66  
67      /**
68       * Converts the message implementation into a String representation
69       * 
70       * @param encoding The encoding to use when transforming the message (if
71       *            necessary). The parameter is used when converting from a byte array
72       * @return String representation of the message payload
73       * @throws Exception Implementation may throw an endpoint specific exception
74       */
75      public String getPayloadAsString(String encoding) throws Exception
76      {
77          Object jmsMessage = getPayload();
78          if (jmsMessage instanceof AdtMessage)
79          {
80              Object adtMessage = ((AdtMessage)jmsMessage).getAdtPayload();
81              if (adtMessage instanceof XMLType)
82              {
83                  return ((XMLType)adtMessage).getStringVal();
84              }
85              else
86              {
87                  return adtMessage.toString();
88              }
89          }
90          else
91          {
92              return super.getPayloadAsString(encoding);
93          }
94      }
95  
96  }