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1   /***
2    * Redistribution and use of this software and associated documentation
3    * ("Software"), with or without modification, are permitted provided
4    * that the following conditions are met:
5    *
6    * 1. Redistributions of source code must retain copyright
7    *    statements and notices.  Redistributions must also contain a
8    *    copy of this document.
9    *
10   * 2. Redistributions in binary form must reproduce the
11   *    above copyright notice, this list of conditions and the
12   *    following disclaimer in the documentation and/or other
13   *    materials provided with the distribution.
14   *
15   * 3. The name "Exolab" must not be used to endorse or promote
16   *    products derived from this Software without prior written
17   *    permission of Exoffice Technologies.  For written permission,
18   *    please contact info@exolab.org.
19   *
20   * 4. Products derived from this Software may not be called "Exolab"
21   *    nor may "Exolab" appear in their names without prior written
22   *    permission of Exoffice Technologies. Exolab is a registered
23   *    trademark of Exoffice Technologies.
24   *
25   * 5. Due credit should be given to the Exolab Project
26   *    (http://www.exolab.org/).
27   *
28   * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29   * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
32   * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39   * OF THE POSSIBILITY OF SUCH DAMAGE.
40   *
41   * Copyright 2001,2003 (C) Exoffice Technologies Inc. All Rights Reserved.
42   *
43   * $Id: JmsConnectionFactoryBuilder.java,v 1.4 2003/08/07 13:32:49 tanderson Exp $
44   *
45   * Date         Author  Changes
46   * 06/14/2001   jima    Created
47   */
48  package org.exolab.jms.client;
49  
50  
51  import java.util.Enumeration;
52  import java.util.Hashtable;
53  
54  import javax.naming.Context;
55  import javax.naming.Name;
56  import javax.naming.Reference;
57  import javax.naming.StringRefAddr;
58  import javax.naming.spi.ObjectFactory;
59  
60  
61  /***
62   * This factory object implements the ObjectFactory interface and is used
63   * to resolve a reference to a connection factory. This is part
64   * of our JNDI support.
65   * <p>
66   * All {@link JmsConnectionFactory} objects support the java.naming.Referenceable
67   * interface and make explicit reference to this factory
68   *
69   * @version     $Revision: 1.4 $ $Date: 2003/08/07 13:32:49 $
70   * @author      <a href="mailto:jima@exoffice.com">Jim Alateras</a>
71   *
72   * @see         org.exolab.jms.client.JmsTopicConnectionFactory
73   * @see         org.exolab.jms.client.JmsQueueConnectionFactory
74   **/
75  public class JmsConnectionFactoryBuilder
76      implements ObjectFactory {
77  
78  
79      // implementation of ObjectFactory.getObjectInstance
80      public Object getObjectInstance(Object object, Name name, Context context,
81                                      Hashtable env) throws Exception {
82          Object result = null;
83  
84          if (object instanceof Reference) {
85              Reference ref = (Reference) object;
86              String className = ref.getClassName();
87  
88              if (className.equals(JmsQueueConnectionFactory.class.getName()) ||
89                  className.equals(JmsTopicConnectionFactory.class.getName())) {
90  
91                  StringRefAddr serverClass =
92                      (StringRefAddr) ref.get("serverClass");
93  
94                  // get a list of string properties and store them in a
95                  // hashtable
96                  Hashtable props = new Hashtable();
97                  Enumeration iter = ref.getAll();
98                  while (iter.hasMoreElements()) {
99                      StringRefAddr addr = (StringRefAddr) iter.nextElement();
100                     props.put(addr.getType(), addr.getContent());
101                 }
102 
103                 // create the factory
104                 if (className.equals(
105                     JmsQueueConnectionFactory.class.getName())) {
106                     result = new JmsQueueConnectionFactory(
107                         (String) serverClass.getContent(), props);
108                 } else {
109                     result = new JmsTopicConnectionFactory(
110                         (String) serverClass.getContent(), props);
111                 }
112             }
113         }
114         return result;
115     }
116 }
117