| IndexConsumer.java |
1 /**
2 * Copyright (c) 2000-2007 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.documentlibrary.service.jms;
24
25 import com.liferay.portal.kernel.util.MethodInvoker;
26 import com.liferay.portal.kernel.util.MethodWrapper;
27
28 import javax.jms.Message;
29 import javax.jms.MessageListener;
30 import javax.jms.ObjectMessage;
31 import javax.jms.Queue;
32 import javax.jms.QueueConnection;
33 import javax.jms.QueueConnectionFactory;
34 import javax.jms.QueueReceiver;
35 import javax.jms.QueueSession;
36 import javax.jms.Session;
37
38 import org.apache.commons.logging.Log;
39 import org.apache.commons.logging.LogFactory;
40
41 /**
42 * <a href="IndexConsumer.java.html"><b><i>View Source</i></b></a>
43 *
44 * @author Brian Wing Shun Chan
45 *
46 */
47 public class IndexConsumer implements MessageListener {
48
49 public void consume() {
50 try {
51 QueueConnectionFactory qcf = IndexQCFUtil.getQCF();
52 QueueConnection con = qcf.createQueueConnection();
53
54 QueueSession session = con.createQueueSession(
55 false, Session.AUTO_ACKNOWLEDGE);
56 Queue queue = (Queue)IndexQueueUtil.getQueue();
57
58 QueueReceiver subscriber = session.createReceiver(queue);
59
60 subscriber.setMessageListener(this);
61
62 con.start();
63 }
64 catch (Exception e) {
65 _log.error(e, e);
66 }
67 }
68
69 public void onMessage(Message msg) {
70 try {
71 ObjectMessage objMsg = (ObjectMessage)msg;
72
73 MethodWrapper methodWrapper = (MethodWrapper)objMsg.getObject();
74
75 _onMessage(methodWrapper);
76 }
77 catch (Exception e) {
78 _log.error(e, e);
79 }
80 }
81
82 private void _onMessage(MethodWrapper methodWrapper) throws Exception {
83 MethodInvoker.invoke(methodWrapper);
84 }
85
86 private static Log _log = LogFactory.getLog(IndexConsumer.class);
87
88 }