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.MessageListener;
21 import javax.resource.spi.LocalTransaction;
22 import javax.resource.spi.UnavailableException;
23 import javax.transaction.TransactionManager;
24 import javax.transaction.xa.XAResource;
25
26 import org.springframework.beans.BeansException;
27 import org.springframework.beans.factory.BeanFactory;
28 import org.springframework.beans.factory.BeanFactoryAware;
29 import org.springframework.beans.factory.InitializingBean;
30
31 /***
32 * A factory of {@link javax.resource.spi.endpoint.MessageEndpoint} instances, either using XA transactions,
33 * Local (JMS) transactions or regular JMS message acknowledgements.
34 * <p/>
35 * To use XA you must set the transactionManager property via the
36 * {@link #setTransactionManager(javax.transaction.TransactionManager)}
37 * method.
38 * <p/>
39 * To use a local JMS transaction, then the XAResouce object passed in the {@link #createEndpoint(XAResource)}
40 * call must implement {@link LocalTransaction}.
41 *
42 * @version $Revision: 1.5 $
43 */
44 public class DefaultEndpointFactory extends EndpointFactorySupport implements InitializingBean, BeanFactoryAware {
45 private BeanFactory beanFactory;
46 private String ref;
47
48 public DefaultEndpointFactory() {
49 }
50
51 public DefaultEndpointFactory(BeanFactory beanFactory, String ref) {
52 this.beanFactory = beanFactory;
53 this.ref = ref;
54 }
55
56 public DefaultEndpointFactory(BeanFactory beanFactory, String ref, TransactionManager transactionManager, String name) {
57 this.beanFactory = beanFactory;
58 this.ref = ref;
59 this.transactionManager = transactionManager;
60 setName(name);
61 }
62
63 public void afterPropertiesSet() throws Exception {
64 if (ref == null) {
65 throw new IllegalArgumentException("ref property must be set");
66 }
67 }
68
69
70
71 public String getRef() {
72 return ref;
73 }
74
75 public void setRef(String ref) {
76 this.ref = ref;
77 }
78
79 public BeanFactory getBeanFactory() {
80 return beanFactory;
81 }
82
83 public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
84 this.beanFactory = beanFactory;
85 }
86
87
88
89 protected MessageListener createMessageListener() throws UnavailableException {
90 MessageListener messageListener = (MessageListener) beanFactory.getBean(ref, MessageListener.class);
91 if (messageListener == null) {
92 throw new UnavailableException("No MessageListener bean available for reference name: " + ref);
93 }
94 return messageListener;
95 }
96 }