| ObjectResponseMessageListener.java |
1 /**
2 * Copyright (c) 2000-2008 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.portal.kernel.messaging;
24
25 /**
26 * <a href="ObjectResponseMessageListener.java.html"><b><i>View Source</i></b>
27 * </a>
28 *
29 * @author Brian Wing Shun Chan
30 *
31 */
32 public class ObjectResponseMessageListener implements MessageListener {
33
34 public ObjectResponseMessageListener(
35 Destination destination, Destination responseDestination,
36 String responseId, long timeout) {
37
38 _destination = destination;
39 _responseDestination = responseDestination;
40 _responseId = responseId;
41 _timeout = timeout;
42 }
43
44 public synchronized Object send(Message message)
45 throws MessageBusException {
46
47 message.setResponseDestination(_responseDestination.getName());
48 message.setResponseId(_responseId);
49
50 _destination.send(message);
51
52 try {
53 wait(_timeout);
54 }
55 catch (InterruptedException ie) {
56 throw new MessageBusException(
57 "Unable to receive response for request", ie);
58 }
59
60 if (_responseValue == null) {
61 throw new MessageBusException(
62 "No reply received for request: " + message);
63 }
64
65 return _responseValue;
66 }
67
68 public synchronized void receive(Object message) {
69 receive((Message)message);
70 }
71
72 public void receive(String message) {
73 throw new UnsupportedOperationException();
74 }
75
76 protected void receive(Message message) {
77 if (message.getResponseId().equals(_responseId)) {
78 _responseValue = message.getResponseValue();
79
80 notify();
81 }
82 }
83
84 private Destination _destination;
85 private Destination _responseDestination;
86 private String _responseId;
87 private long _timeout;
88 private Object _responseValue;
89
90 }