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Java > Open Source Codes > archi > DSubscriber


1 /*
2  * JORAM: Java(TM) Open Reliable Asynchronous Messaging
3  * Copyright (C) 2001 - ScalAgent Distributed Technologies
4  * Copyright (C) 1996 - Dyade
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19  * USA.
20  *
21  * Initial developer(s): Frederic Maistre (INRIA)
22  * Contributor(s):
23  */
24 package archi;
25
26 import javax.jms.*;
27 import javax.naming.*;
28
29 public class DSubscriber
30 {
31   static Context ictx = null;
32
33   public static void main (String JavaDoc argv[]) throws Exception JavaDoc
34   {
35     System.out.println();
36     System.out.println("Durably subscribes and listens to the topic...");
37
38     ictx = new InitialContext();
39     ConnectionFactory cnxF = (ConnectionFactory) ictx.lookup("cf2");
40     Topic dest = (Topic) ictx.lookup("topic");
41     ictx.close();
42
43     Connection cnx = cnxF.createConnection();
44
45     Session session = cnx.createSession(false, Session.AUTO_ACKNOWLEDGE);
46
47     TopicSubscriber sub = session.createDurableSubscriber(dest, "mySub");
48     sub.setMessageListener(new Listener());
49
50     cnx.start();
51
52     System.in.read();
53     cnx.close();
54
55     System.out.println();
56     System.out.println("Subscription closed.");
57   }
58 }
59
60 class Listener implements javax.jms.MessageListener JavaDoc
61 {
62   public void onMessage(Message msg)
63   {
64     try {
65       if (msg instanceof TextMessage)
66         System.out.println("Msg: " + ((TextMessage) msg).getText());
67     }
68     catch (JMSException jE) {
69       System.err.println("Exception: " + jE);
70     }
71   }
72 }
73
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