1 /***
2 *
3 * Copyright 2005 LogicBlaze, Inc. http://www.logicblaze.com
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 org.springframework.beans.factory.InitializingBean;
21
22 import javax.jms.MessageListener;
23 import javax.resource.spi.UnavailableException;
24 import javax.transaction.TransactionManager;
25
26 /***
27 * An implementation of {@link javax.resource.spi.endpoint.MessageEndpointFactory} which always
28 * uses a single shared instance of a {@link javax.jms.MessageListener} for every endpoint, irrespective
29 * of how many physical endpoints are used.
30 *
31 * @version $Revision: 1.2 $
32 */
33 public class SingletonEndpointFactory extends EndpointFactorySupport implements InitializingBean {
34 private MessageListener messageListener;
35
36 public SingletonEndpointFactory() {
37 }
38
39 public SingletonEndpointFactory(MessageListener messageListener) {
40 this.messageListener = messageListener;
41 }
42
43 public SingletonEndpointFactory(MessageListener messageListener, TransactionManager tm) {
44 this.messageListener = messageListener;
45 this.transactionManager = tm;
46 }
47
48 public void afterPropertiesSet() throws Exception {
49 if (messageListener == null) {
50 throw new IllegalArgumentException("messageListener property must be set");
51 }
52 }
53
54 public MessageListener getMessageListener() {
55 return messageListener;
56 }
57
58 public void setMessageListener(MessageListener messageListener) {
59 this.messageListener = messageListener;
60 }
61
62
63
64 protected MessageListener createMessageListener() throws UnavailableException {
65 return messageListener;
66 }
67 }