1 /***
2 *
3 * Copyright 2005 LogicBlaze, Inc.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 **/
18 package org.jencks;
19
20 import javax.jms.JMSException;
21 import javax.jms.Message;
22 import javax.jms.MessageListener;
23 import javax.resource.ResourceException;
24 import javax.resource.spi.endpoint.MessageEndpoint;
25 import java.lang.reflect.Method;
26
27 /***
28 * An endpoint which uses a JMS {@link javax.jms.Message#acknowledge()} to
29 * acknowledge that a message is delivered.
30 *
31 * @version $Revision: 1.1.1.1 $
32 */
33 public class AcknowledgeEndpoint implements MessageEndpoint, MessageListener {
34
35 private MessageListener messageListener;
36 private Message message;
37
38 public AcknowledgeEndpoint(MessageListener messageListener) {
39 this.messageListener = messageListener;
40 }
41
42 public void beforeDelivery(Method method) throws NoSuchMethodException, ResourceException {
43 }
44
45 public void afterDelivery() throws ResourceException {
46 if (message == null) {
47 throw new ResourceException("No message has been delivered yet");
48 }
49 try {
50 message.acknowledge();
51 }
52 catch (JMSException e) {
53 throw new ResourceException(e);
54 }
55 finally {
56 message = null;
57 }
58 }
59
60 public void release() {
61 }
62
63 public void onMessage(Message message) {
64 messageListener.onMessage(message);
65 this.message = message;
66 }
67 }