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;
53 import java.io.ByteArrayOutputStream;
54 import java.io.IOException;
55 import java.io.ObjectInputStream;
56 import java.io.ObjectOutputStream;
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 object)
73 throws IOException {
74
75 ByteArrayOutputStream bstream = new ByteArrayOutputStream();
76 ObjectOutputStream ostream = new ObjectOutputStream(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 deserialize(byte[] blob)
95 throws IOException, ClassNotFoundException {
96
97 if (blob == null) {
98 throw new IllegalArgumentException("null blob to deserialize");
99 }
100
101 ByteArrayInputStream bstream = new ByteArrayInputStream(blob);
102 ObjectInputStream istream = new ObjectInputStream(bstream);
103
104 return istream.readObject();
105 }
106 }