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1   /**
2    * JDBM LICENSE v1.00
3    *
4    * Redistribution and use of this software and associated documentation
5    * ("Software"), with or without modification, are permitted provided
6    * that the following conditions are met:
7    *
8    * 1. Redistributions of source code must retain copyright
9    *    statements and notices.  Redistributions must also contain a
10   *    copy of this document.
11   *
12   * 2. Redistributions in binary form must reproduce the
13   *    above copyright notice, this list of conditions and the
14   *    following disclaimer in the documentation and/or other
15   *    materials provided with the distribution.
16   *
17   * 3. The name "JDBM" must not be used to endorse or promote
18   *    products derived from this Software without prior written
19   *    permission of Cees de Groot.  For written permission,
20   *    please contact cg@cdegroot.com.
21   *
22   * 4. Products derived from this Software may not be called "JDBM"
23   *    nor may "JDBM" appear in their names without prior written
24   *    permission of Cees de Groot.
25   *
26   * 5. Due credit should be given to the JDBM Project
27   *    (http://jdbm.sourceforge.net/).
28   *
29   * THIS SOFTWARE IS PROVIDED BY THE JDBM PROJECT AND CONTRIBUTORS
30   * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
31   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
32   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
33   * CEES DE GROOT OR ANY CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
34   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
35   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
36   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
38   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
40   * OF THE POSSIBILITY OF SUCH DAMAGE.
41   *
42   * Copyright 2001 (C) Alex Boisvert. All Rights Reserved.
43   * Contributions are Copyright (C) 2001 by their associated contributors.
44   *
45   */
46  
47  package jdbm.helper;
48  
49  import java.io.IOException;
50  
51  /**
52   * Optimized serializer for long integers.
53   *
54   * @author <a href="mailto:boisvert@intalio.com">Alex Boisvert</a>
55   * @version $Id: LongSerializer.java,v 1.2 2003/09/21 15:47:00 boisvert Exp $
56   */
57  public class LongSerializer 
58      implements Serializer
59  {
60  
61      
62      public static final LongSerializer INSTANCE = new LongSerializer();
63      
64      
65      /**
66       * Construct a LongSerializer.
67       */
68      public LongSerializer()
69      {
70          // no op
71      }
72  
73      
74      /**
75       * Serialize the content of an object into a byte array.
76       *
77       * @param obj Object to serialize
78       * @return a byte array representing the object's state
79       */
80       public byte[] serialize( Object obj )
81          throws IOException
82       {
83           Long number = (Long) obj;
84           return Conversion.convertToByteArray( number.longValue() );
85       }
86          
87          
88      /**
89       * Deserialize the content of an object from a byte array.
90       *
91       * @param serialized Byte array representation of the object
92       * @return deserialized object
93       */
94       public Object deserialize( byte[] serialized )
95          throws IOException
96       {
97           long number = Conversion.convertToLong( serialized );
98           return new Long( number );
99       }
100 
101 }