KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > mr > ra > inbound > SessionAndProducerHelper


1 /*
2  * Copyright 2002 by
3  * <a HREF="http://www.coridan.com">Coridan</a>
4  * <a HREF="mailto: support@coridan.com ">support@coridan.com</a>
5  *
6  * The contents of this file are subject to the Mozilla Public License Version
7  * 1.1 (the "License"); you may not use this file except in compliance with the
8  * License. You may obtain a copy of the License at
9  * http://www.mozilla.org/MPL/
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is "MantaRay" (TM).
17  *
18  * The Initial Developer of the Original Code is Coridan.
19  * Portions created by the Initial Developer are Copyright (C) 2006
20  * Coridan Inc. All Rights Reserved.
21  *
22  * Contributor(s): all the names of the contributors are added in the source
23  * code where applicable.
24  *
25  * Alternatively, the contents of this file may be used under the terms of the
26  * LGPL license (the "GNU LESSER GENERAL PUBLIC LICENSE"), in which case the
27  * provisions of LGPL are applicable instead of those above. If you wish to
28  * allow use of your version of this file only under the terms of the LGPL
29  * License and not to allow others to use your version of this file under
30  * the MPL, indicate your decision by deleting the provisions above and
31  * replace them with the notice and other provisions required by the LGPL.
32  * If you do not delete the provisions above, a recipient may use your version
33  * of this file under either the MPL or the GNU LESSER GENERAL PUBLIC LICENSE.
34  
35  *
36  * This library is free software; you can redistribute it and/or modify it
37  * under the terms of the MPL as stated above or under the terms of the GNU
38  * Lesser General Public License as published by the Free Software Foundation;
39  * either version 2.1 of the License, or any later version.
40  *
41  * This library is distributed in the hope that it will be useful, but WITHOUT
42  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
43  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
44  * License for more details.
45  */
46
47 package org.mr.ra.inbound;
48
49 /**
50  * A helper class used to provide access to the current active
51  * {@link SessionAndProducer} instance being used to process a message
52  * in the current thread so that messages can be produced using the same
53  * session.
54  *
55  * @version $Revision: 1.1.1.1 $
56  */
57 public class SessionAndProducerHelper {
58     private static final ThreadLocal JavaDoc threadLocal = new ThreadLocal JavaDoc();
59
60     /**
61      * Returns the current {@link SessionAndProducer} used by the current thread which is processing a message.
62      * This allows us to access the current Session to send a message using the same underlying
63      * session to avoid unnecessary XA or to use regular JMS transactions while using message driven POJOs.
64      *
65      * @return
66      */
67     public static SessionAndProducer getActiveSessionAndProducer() {
68         return (SessionAndProducer) threadLocal.get();
69     }
70
71
72     /**
73      * Registers the session and producer which should be called before the
74      * {@link javax.resource.spi.endpoint.MessageEndpoint#beforeDelivery(java.lang.reflect.Method)}
75      * method is called.
76      *
77      * @param sessionAndProducer
78      */
79     public static void register(SessionAndProducer sessionAndProducer) {
80         threadLocal.set(sessionAndProducer);
81     }
82
83     /**
84      * Unregisters the session and producer which should be called after the
85      * {@link javax.resource.spi.endpoint.MessageEndpoint#afterDelivery()}
86      * method is called.
87      *
88      * @param sessionAndProducer
89      */
90     public static void unregister(SessionAndProducer sessionAndProducer) {
91         threadLocal.set(null);
92     }
93 }
94
Popular Tags