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Java > Open Source Codes > org > mr > api > jms > ReceiveListener


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 Nimo.
19  * Portions created by the Initial Developer are Copyright (C) 2006
20  * Coridan Inc. All Rights Reserved.
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22  * Contributor(s): all the names of the contributors are added in the source
23  * code where applicable.
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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
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29  * License and not to allow others to use your version of this file under
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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.api.jms;
48
49
50 import org.mr.IMessageListener;
51 import org.mr.core.protocol.MantaBusMessage;
52
53 /**
54  * @author Nimo
55  *
56  * This class is a listener that is used for receive() purposes on a topic.
57  */
58 class ReceiveListener implements IMessageListener {
59     
60     MantaBusMessage response;
61     
62     ReceiveListener() {
63         
64         response = null;
65     }
66     
67     public synchronized void onMessage(MantaBusMessage message) {
68         response = message;
69         notifyAll();
70     }//onMessage
71
72     public synchronized MantaBusMessage waitForInfo(long timeout) {
73         
74         //see if we managed to get anything in the meantime.
75 if(response != null || timeout<0) return response;
76         
77         try { wait(timeout); }
78         catch (InterruptedException JavaDoc ie) {
79             //do nothing - we got a message so it's ok.
80 }
81         
82         return response;
83     }
84     
85     
86 }
87
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