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Java > Open Source Codes > org > exolab > jms > client > JmsTemporaryQueue


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 2000-2004 (C) Exoffice Technologies Inc. All Rights Reserved.
42  *
43  * $Id: JmsTemporaryQueue.java,v 1.1 2004/11/26 01:50:40 tanderson Exp $
44  */
45 package org.exolab.jms.client;
46
47 import java.io.IOException JavaDoc;
48 import java.io.ObjectInput JavaDoc;
49 import java.io.ObjectOutput JavaDoc;
50
51 import javax.jms.JMSException JavaDoc;
52 import javax.jms.Queue JavaDoc;
53 import javax.jms.TemporaryQueue JavaDoc;
54 import javax.naming.Reference JavaDoc;
55 import javax.naming.Referenceable JavaDoc;
56
57 import org.exolab.jms.common.uuid.UUID;
58
59
60 /**
61  * A temporary queue is created by a client through a session and has
62  * a lifetime of the session's connection.
63  *
64  * @version $Revision: 1.1 $ $Date: 2004/11/26 01:50:40 $
65  * @author <a HREF="mailto:jima@exoffice.com">Jim Alateras</a>
66  */
67 public class JmsTemporaryQueue
68     extends JmsQueue
69     implements TemporaryQueue JavaDoc, JmsTemporaryDestination {
70
71     /**
72      * Used for serialization
73      */
74     static final long serialVersionUID = 2;
75
76     /**
77      * The identifier of the connection that created this temporary
78      * destination.
79      */
80     private long _connectionId;
81
82     /**
83      * Reference to the connection that owns this deztination.
84      */
85     private transient JmsConnection _connection = null;
86
87
88     /**
89      * Construct a new <code>JmsTemporaryQueue</code>
90      */
91     public JmsTemporaryQueue() {
92         super(TEMP_QUEUE_PREFIX + UUID.next());
93     }
94
95     // implementation of TemporaryTopic.delete
96 public void delete()
97         throws JMSException JavaDoc {
98         // unregister the temporary topic from the owning destination
99 _connection.deleteTemporaryDestination(this);
100     }
101
102     // implementation of JmsTemporaryDestination.setOwningConnection
103 public void setOwningConnection(JmsConnection connection) {
104         _connection = connection;
105         _connectionId = connection.getConnectionId();
106     }
107
108     // implementation of JmsTemporaryDestination.getOwningConnection
109 public JmsConnection getOwningConnection() {
110         return _connection;
111     }
112
113     // implementation of JmsTemporaryDestination.getConnectionId
114 public long getConnectionId() {
115         return _connectionId;
116     }
117
118     // implementation of Referenceable.getReference
119 public Reference JavaDoc getReference() {
120         // should never be called for temp destination
121 return null;
122     }
123
124     // implementation of JmsTemporaryDestination.validForConnection
125 public boolean validForConnection(JmsConnection connection) {
126         boolean result = false;
127
128         if (connection != null
129             && connection.getConnectionId() == _connectionId) {
130             result = true;
131         }
132
133         return result;
134     }
135
136     // implementation of Externalizable.writeExternal
137 public void writeExternal(ObjectOutput JavaDoc stream)
138         throws IOException JavaDoc {
139         stream.writeLong(serialVersionUID);
140         stream.writeLong(_connectionId);
141         super.writeExternal(stream);
142     }
143
144     // implementation of Externalizable.writeExternal
145 public void readExternal(ObjectInput JavaDoc stream)
146         throws IOException JavaDoc, ClassNotFoundException JavaDoc {
147         long version = stream.readLong();
148         if (version == serialVersionUID) {
149             _connectionId = stream.readLong();
150             super.readExternal(stream);
151         } else {
152             throw new IOException JavaDoc("JmsTemporaryQueue with version "
153                                   + version + " is not supported.");
154         }
155     }
156 }
157
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