KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > caucho > jms > jca > ListenerEndpointFactory


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  * Free SoftwareFoundation, Inc.
23  * 59 Temple Place, Suite 330
24  * Boston, MA 02111-1307 USA
25  *
26  * @author Scott Ferguson
27  */
28
29 package com.caucho.jms.jca;
30
31 import com.caucho.config.BuilderProgram;
32 import com.caucho.config.ConfigException;
33 import com.caucho.log.Log;
34 import com.caucho.util.L10N;
35
36 import javax.resource.spi.UnavailableException JavaDoc;
37 import javax.resource.spi.endpoint.MessageEndpoint JavaDoc;
38 import javax.resource.spi.endpoint.MessageEndpointFactory JavaDoc;
39 import javax.transaction.xa.XAResource JavaDoc;
40 import java.lang.reflect.Method JavaDoc;
41 import java.util.logging.Logger JavaDoc;
42
43 /**
44  * The JMS MessageListener endpoing factory
45  */
46 public class ListenerEndpointFactory implements MessageEndpointFactory JavaDoc {
47   private static final Logger JavaDoc log = Log.open(ListenerEndpointFactory.class);
48   private static final L10N L = new L10N(ListenerEndpointFactory.class);
49
50   private BuilderProgram _program;
51   
52   private ListenerEndpoint _initialEndpoint;
53
54   public void setListener(BuilderProgram program)
55     throws Throwable JavaDoc
56   {
57     _program = program;
58
59     _initialEndpoint = new ListenerEndpoint();
60     program.configure(_initialEndpoint);
61   }
62
63   /**
64    * Initialization.
65    */
66   public void init()
67     throws ConfigException
68   {
69     if (_initialEndpoint == null) {
70       throw new ConfigException(L.l("ListenerEndpointFactory needs a <listener>"));
71     }
72   }
73   
74   /**
75    * Creates an endpoint with the associated XA resource.
76    */
77   public MessageEndpoint JavaDoc createEndpoint(XAResource JavaDoc xaResource)
78     throws UnavailableException JavaDoc
79   {
80     try {
81       ListenerEndpoint listener = _initialEndpoint;
82       _initialEndpoint = null;
83
84       if (listener == null) {
85     listener = new ListenerEndpoint();
86     _program.configure(listener);
87       }
88
89       return listener;
90     } catch (Throwable JavaDoc e) {
91       throw new UnavailableException JavaDoc(e);
92     }
93   }
94
95   /**
96    * Returns true to find out whether message deliveries to the
97    * message endpoint will be transacted. This is only a hint.
98    */
99   public boolean isDeliveryTransacted(Method JavaDoc method)
100   {
101     return false;
102   }
103 }
104
105
Popular Tags