Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
XAMessenger |
|
| 2.0;2 |
1 | /* | |
2 | * Copyright (C) The Apache Software Foundation. All rights reserved. | |
3 | * | |
4 | * This software is published under the terms of the Apache Software License | |
5 | * version 1.1, a copy of which has been included with this distribution in | |
6 | * the LICENSE file. | |
7 | * | |
8 | * $Id: XAMessenger.java 155459 2005-02-26 13:24:44Z dirkv $ | |
9 | */ | |
10 | package org.apache.commons.messenger; | |
11 | ||
12 | import javax.jms.Session; | |
13 | import javax.jms.XASession; | |
14 | import javax.transaction.Transaction; | |
15 | import javax.transaction.xa.XAResource; | |
16 | ||
17 | import org.apache.commons.logging.Log; | |
18 | import org.apache.commons.logging.LogFactory; | |
19 | ||
20 | /** <p><code>XAMessenger</code> is a default implementation of | |
21 | * Messenger which can also support XA transactions by enlisting and delisting | |
22 | * XAResources. | |
23 | * This is implemented as a seperate Messenger implementation to avoid the core | |
24 | * Messenger having a dependency on JTA. | |
25 | * .</p> | |
26 | * | |
27 | * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> | |
28 | * @version $Revision: 155459 $ | |
29 | */ | |
30 | public class XAMessenger extends DefaultMessenger implements XACapable { | |
31 | ||
32 | /** Logger */ | |
33 | 0 | private static final Log log = LogFactory.getLog(XAMessenger.class); |
34 | ||
35 | 0 | public XAMessenger() { |
36 | 0 | } |
37 | ||
38 | // XACapable interface | |
39 | //------------------------------------------------------------------------- | |
40 | ||
41 | public void enlistResources(Transaction transaction) throws Exception { | |
42 | 0 | XAResource resource = getXAResource(); |
43 | 0 | if (resource != null) { |
44 | 0 | transaction.enlistResource(resource); |
45 | } | |
46 | 0 | } |
47 | ||
48 | public void delistResources(Transaction transaction, int flag) throws Exception { | |
49 | 0 | XAResource resource = getXAResource(); |
50 | 0 | if (resource != null) { |
51 | 0 | transaction.delistResource(resource, flag); |
52 | } | |
53 | 0 | } |
54 | ||
55 | // Implementation methods | |
56 | //------------------------------------------------------------------------- | |
57 | ||
58 | /** | |
59 | * @return the XAResource associated with this Messenger if one exists | |
60 | */ | |
61 | protected XAResource getXAResource() throws Exception { | |
62 | 0 | Session session = getMessengerSession().getSession(); |
63 | 0 | if (session instanceof XASession) { |
64 | 0 | XASession xaSession = (XASession) session; |
65 | 0 | return xaSession.getXAResource(); |
66 | } | |
67 | 0 | return null; |
68 | } | |
69 | } |