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Java > Open Source Codes > org > dbunit > dataset > datatype > DoubleDataType


1 /*
2  *
3  * The DbUnit Database Testing Framework
4  * Copyright (C)2002-2004, DbUnit.org
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21
22 package org.dbunit.dataset.datatype;
23
24 import org.dbunit.dataset.ITable;
25
26 import java.math.BigDecimal JavaDoc;
27 import java.sql.PreparedStatement JavaDoc;
28 import java.sql.ResultSet JavaDoc;
29 import java.sql.SQLException JavaDoc;
30
31 /**
32  * @author Manuel Laflamme
33  * @version $Revision: 1.14 $
34  */
35 public class DoubleDataType extends AbstractDataType
36 {
37     DoubleDataType(String JavaDoc name, int sqlType)
38     {
39         super(name, sqlType, Double JavaDoc.class, true);
40     }
41
42     /////////////////////////////////////////////////////////////////////////////
43 // DataType methods
44
45     public Object JavaDoc typeCast(Object JavaDoc value) throws TypeCastException
46     {
47         if (value == null || value == ITable.NO_VALUE)
48         {
49             return null;
50         }
51
52         if (value instanceof Number JavaDoc)
53         {
54             return new Double JavaDoc(((Number JavaDoc)value).doubleValue());
55         }
56
57         try
58         {
59             return typeCast(new BigDecimal JavaDoc(value.toString()));
60         }
61         catch (java.lang.NumberFormatException JavaDoc e)
62         {
63             throw new TypeCastException(value, this, e);
64         }
65     }
66
67     public Object JavaDoc getSqlValue(int column, ResultSet JavaDoc resultSet)
68             throws SQLException JavaDoc, TypeCastException
69     {
70         double value = resultSet.getDouble(column);
71         if (resultSet.wasNull())
72         {
73             return null;
74         }
75         return new Double JavaDoc(value);
76     }
77
78     public void setSqlValue(Object JavaDoc value, int column, PreparedStatement JavaDoc statement)
79             throws SQLException JavaDoc, TypeCastException
80     {
81         statement.setDouble(column, ((Number JavaDoc)typeCast(value)).doubleValue());
82     }
83
84 }
85
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