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Java > Open Source Codes > org > exolab > jms > tranlog > SerializationHelper


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 (C) Exoffice Technologies Inc. All Rights Reserved.
42  *
43  *
44  * $Id: SerializationHelper.java,v 1.1 2004/11/26 01:51:01 tanderson Exp $
45  *
46  * Date Author Changes
47  * 20/11/2001 jima Created
48  */
49 package org.exolab.jms.tranlog;
50
51
52 import java.io.ByteArrayInputStream JavaDoc;
53 import java.io.ByteArrayOutputStream JavaDoc;
54 import java.io.IOException JavaDoc;
55 import java.io.ObjectInputStream JavaDoc;
56 import java.io.ObjectOutputStream JavaDoc;
57
58
59 /**
60  * A utility class to assist with serialization and desearialization of objects
61  * to and from byte stream
62  */
63 public class SerializationHelper {
64
65     /**
66      * Serialize the specified object
67      *
68      * @param object - object to serialize
69      * @return byte[] - the serialized object
70      * @throws IOException - if there is an error with serialization
71      */
72     static public byte[] serialize(Object JavaDoc object)
73         throws IOException JavaDoc {
74
75         ByteArrayOutputStream JavaDoc bstream = new ByteArrayOutputStream JavaDoc();
76         ObjectOutputStream JavaDoc ostream = new ObjectOutputStream JavaDoc(bstream);
77         ostream.writeObject(object);
78
79         return bstream.toByteArray();
80     }
81
82     /**
83      * Deserialise the specified blob into an Object and return it
84      * to the client.
85      * <p>
86      * If there is an error with the deserialization then throw an
87      * IOException
88      *
89      * @param blob - the blob of bytes to deserialize
90      * @return Object - the object to return
91      * @throws IOException - if it cannot deseriliaze
92      * @throws IllegalArgumentException if the blob is null
93      */
94     static public Object JavaDoc deserialize(byte[] blob)
95         throws IOException JavaDoc, ClassNotFoundException JavaDoc {
96
97         if (blob == null) {
98             throw new IllegalArgumentException JavaDoc("null blob to deserialize");
99         }
100
101         ByteArrayInputStream JavaDoc bstream = new ByteArrayInputStream JavaDoc(blob);
102         ObjectInputStream JavaDoc istream = new ObjectInputStream JavaDoc(bstream);
103
104         return istream.readObject();
105     }
106 }
107
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