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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 javax.jms.MessageListener;
21  import javax.resource.spi.LocalTransaction;
22  import javax.resource.spi.UnavailableException;
23  import javax.resource.spi.endpoint.MessageEndpoint;
24  import javax.resource.spi.endpoint.MessageEndpointFactory;
25  import javax.transaction.TransactionManager;
26  import javax.transaction.xa.XAResource;
27  import java.lang.reflect.Method;
28  
29  /***
30   * @version $Revision: 1.1.1.1 $
31   */
32  public abstract class EndpointFactorySupport implements MessageEndpointFactory {
33      protected TransactionManager transactionManager;
34  
35      public MessageEndpoint createEndpoint(XAResource xaResource) throws UnavailableException {
36          MessageListener messageListener = createMessageListener();
37          if (transactionManager != null) {
38              return new XAEndpoint(messageListener, xaResource, transactionManager);
39          }
40          else if (xaResource instanceof LocalTransaction) {
41              return new LocalTransactionEndpoint(messageListener, (LocalTransaction) xaResource);
42          }
43          return new AcknowledgeEndpoint(messageListener);
44      }
45  
46      public String toString() {
47          return super.toString() + "[transactionManager=" + transactionManager + "]";
48      }
49  
50      // Properties
51      //-------------------------------------------------------------------------
52      public boolean isDeliveryTransacted(Method method) throws NoSuchMethodException {
53          return transactionManager != null;
54      }
55  
56      public TransactionManager getTransactionManager() {
57          return transactionManager;
58      }
59  
60      public void setTransactionManager(TransactionManager transactionManager) {
61          this.transactionManager = transactionManager;
62      }
63  
64      // Implementation methods
65      //-------------------------------------------------------------------------
66      protected abstract MessageListener createMessageListener() throws UnavailableException;
67  }