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Java > Open Source Codes > com > quadcap > sql > io > ExternProxyBigDecimal


1 package com.quadcap.sql.io;
2
3 /* Copyright 1999 - 2003 Quadcap Software. All rights reserved.
4  *
5  * This software is distributed under the Quadcap Free Software License.
6  * This software may be used or modified for any purpose, personal or
7  * commercial. Open Source redistributions are permitted. Commercial
8  * redistribution of larger works derived from, or works which bundle
9  * this software requires a "Commercial Redistribution License"; see
10  * http://www.quadcap.com/purchase.
11  *
12  * Redistributions qualify as "Open Source" under one of the following terms:
13  *
14  * Redistributions are made at no charge beyond the reasonable cost of
15  * materials and delivery.
16  *
17  * Redistributions are accompanied by a copy of the Source Code or by an
18  * irrevocable offer to provide a copy of the Source Code for up to three
19  * years at the cost of materials and delivery. Such redistributions
20  * must allow further use, modification, and redistribution of the Source
21  * Code under substantially the same terms as this license.
22  *
23  * Redistributions of source code must retain the copyright notices as they
24  * appear in each source code file, these license terms, and the
25  * disclaimer/limitation of liability set forth as paragraph 6 below.
26  *
27  * Redistributions in binary form must reproduce this Copyright Notice,
28  * these license terms, and the disclaimer/limitation of liability set
29  * forth as paragraph 6 below, in the documentation and/or other materials
30  * provided with the distribution.
31  *
32  * The Software is provided on an "AS IS" basis. No warranty is
33  * provided that the Software is free of defects, or fit for a
34  * particular purpose.
35  *
36  * Limitation of Liability. Quadcap Software shall not be liable
37  * for any damages suffered by the Licensee or any third party resulting
38  * from use of the Software.
39  */
40
41 import java.io.IOException JavaDoc;
42 import java.io.ObjectInput JavaDoc;
43 import java.io.ObjectOutput JavaDoc;
44
45 import java.math.BigDecimal JavaDoc;
46 import java.math.BigInteger JavaDoc;
47
48 import com.quadcap.util.Debug;
49
50 /**
51  * ExternalizeProxy for <code>java.math.BigDecimal</code> objects.
52  *
53  * @author Stan Bailes
54  */
55 public class ExternProxyBigDecimal implements ExternalizeProxy {
56     public Object JavaDoc readObject(ObjectInput JavaDoc in) throws IOException JavaDoc {
57     if (in.read() == 0) return null;
58     int cnt = in.read();
59     byte[] buf = new byte[cnt];
60     in.read(buf);
61     int scale = in.readInt();
62     BigInteger JavaDoc bi = new BigInteger JavaDoc(buf);
63     BigDecimal JavaDoc big = new BigDecimal JavaDoc(bi, scale);
64     return big;
65     }
66     
67     public void writeObject(ObjectOutput JavaDoc out, Object JavaDoc object)
68     throws IOException JavaDoc
69     {
70     if (object == null) {
71         out.write(0);
72     } else {
73         out.write(1);
74         BigDecimal JavaDoc big = (BigDecimal JavaDoc)object;
75 //- //#ifdef JDK11
76 //- BigInteger bi = big.movePointRight(big.scale()).toBigInteger();
77 //#else
78 BigInteger JavaDoc bi = big.unscaledValue();
79         //#endif
80 byte[] buf = bi.toByteArray();
81         out.write(buf.length);
82         out.write(buf);
83         out.writeInt(big.scale());
84     }
85     }
86 }
87
88
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