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Java > Open Source Codes > org > exolab > jms > message > StreamMessageConverter


1 /**
2  * Redistribution and use of this software and associated documentation
3  * ("Software"), with or without modification, are permitted provided
4  * that the following conditions are met:
5  *
6  * 1. Redistributions of source code must retain copyright
7  * statements and notices. Redistributions must also contain a
8  * copy of this document.
9  *
10  * 2. Redistributions in binary form must reproduce the
11  * above copyright notice, this list of conditions and the
12  * following disclaimer in the documentation and/or other
13  * materials provided with the distribution.
14  *
15  * 3. The name "Exolab" must not be used to endorse or promote
16  * products derived from this Software without prior written
17  * permission of Exoffice Technologies. For written permission,
18  * please contact info@exolab.org.
19  *
20  * 4. Products derived from this Software may not be called "Exolab"
21  * nor may "Exolab" appear in their names without prior written
22  * permission of Exoffice Technologies. Exolab is a registered
23  * trademark of Exoffice Technologies.
24  *
25  * 5. Due credit should be given to the Exolab Project
26  * (http://www.exolab.org/).
27  *
28  * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29  * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32  * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39  * OF THE POSSIBILITY OF SUCH DAMAGE.
40  *
41  * Copyright 2003 (C) Exoffice Technologies Inc. All Rights Reserved.
42  *
43  * $Id: StreamMessageConverter.java,v 1.1 2004/11/26 01:50:43 tanderson Exp $
44  */
45
46 package org.exolab.jms.message;
47
48 import javax.jms.JMSException JavaDoc;
49 import javax.jms.Message JavaDoc;
50 import javax.jms.MessageEOFException JavaDoc;
51 import javax.jms.StreamMessage JavaDoc;
52
53
54 /**
55  * Convert a <code>StreamMessage</code> instance to its OpenJMS equivalent
56  *
57  * @version $Revision: 1.1 $ $Date: 2004/11/26 01:50:43 $
58  * @author <a HREF="mailto:tma@netspace.net.au">Tim Anderson</a>
59  * @see MessageConverterFactory
60  */
61 class StreamMessageConverter extends AbstractMessageConverter {
62
63     /**
64      * Construct an OpenJMS implementation of a message
65      *
66      * @return the OpenJMS implementation of the message
67      * @throws JMSException if the message cannot be created
68      */
69     protected Message JavaDoc create() throws JMSException JavaDoc {
70         return new StreamMessageImpl();
71     }
72
73     /**
74      * Populate an OpenJMS message from another message of the same type
75      *
76      * @param source the message to convert
77      * @param target the message to populate
78      * @throws JMSException for any error
79      */
80     protected void populate(Message JavaDoc source, Message JavaDoc target)
81         throws JMSException JavaDoc {
82         StreamMessage JavaDoc from = (StreamMessage JavaDoc) source;
83         StreamMessage JavaDoc to = (StreamMessage JavaDoc) target;
84
85         // populate header
86 super.populate(from, to);
87
88         // populate body
89 from.reset(); // make sure the message can be read
90 try {
91             while (true) {
92                 Object JavaDoc object = from.readObject();
93                 to.writeObject(object);
94             }
95         } catch (MessageEOFException JavaDoc ignore) {
96             // all done
97 }
98     }
99 }
100
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