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Java > Open Source Codes > com > caucho > jms > message > ObjectMessageImpl


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.message;
30
31 import com.caucho.jms.JMSExceptionWrapper;
32 import com.caucho.vfs.ContextLoaderObjectInputStream;
33 import com.caucho.vfs.ReadStream;
34 import com.caucho.vfs.TempStream;
35 import com.caucho.vfs.WriteStream;
36
37 import javax.jms.JMSException JavaDoc;
38 import javax.jms.ObjectMessage JavaDoc;
39 import java.io.ObjectInputStream JavaDoc;
40 import java.io.ObjectOutputStream JavaDoc;
41 import java.io.Serializable JavaDoc;
42
43 /**
44  * An object message.
45  */
46 public class ObjectMessageImpl extends MessageImpl implements ObjectMessage JavaDoc {
47   private TempStream _tempStream;
48   
49   /**
50    * Writes the object to the stream.
51    */
52   public void setObject(Serializable JavaDoc o)
53     throws JMSException JavaDoc
54   {
55     checkBodyWriteable();
56     
57     _tempStream = new TempStream(null);
58     
59     try {
60       WriteStream ws = new WriteStream(_tempStream);
61       ObjectOutputStream JavaDoc oos = new ObjectOutputStream JavaDoc(ws);
62       oos.writeObject(o);
63       oos.close();
64       ws.close();
65     } catch (Exception JavaDoc e) {
66       throw JMSExceptionWrapper.create(e);
67     }
68   }
69
70   /**
71    * Reads the object from the stream.
72    */
73   public Serializable JavaDoc getObject()
74     throws JMSException JavaDoc
75   {
76     if (_tempStream == null)
77       return null;
78     
79     try {
80       ReadStream is = _tempStream.openRead(false);
81       ObjectInputStream ois = new ContextLoaderObjectInputStream(is);
82       Serializable JavaDoc object = (Serializable JavaDoc) ois.readObject();
83       ois.close();
84       is.close();
85
86       return object;
87     } catch (Exception JavaDoc e) {
88       e.printStackTrace();
89       throw JMSExceptionWrapper.create(e);
90     }
91   }
92   
93   /**
94    * Clears the body
95    */
96   public void clearBody()
97     throws JMSException JavaDoc
98   {
99     super.clearBody();
100     
101     _tempStream = null;
102   }
103
104   public MessageImpl copy()
105   {
106     ObjectMessageImpl msg = new ObjectMessageImpl();
107
108     copy(msg);
109     
110     msg._tempStream = _tempStream;
111
112     return msg;
113   }
114 }
115
116
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