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Java > Open Source Codes > org > dbunit > dataset > FilteredTableMetaData


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;
23
24 import org.dbunit.dataset.filter.IColumnFilter;
25
26 import java.util.List JavaDoc;
27 import java.util.ArrayList JavaDoc;
28
29 /**
30  * @author Manuel Laflamme
31  * @version $Revision: 1.1 $
32  * @since May 11, 2004
33  */
34 public class FilteredTableMetaData extends AbstractTableMetaData
35 {
36     private final String JavaDoc _tableName;
37     private final Column[] _columns;
38     private final Column[] _primaryKeys;
39
40     public FilteredTableMetaData(ITableMetaData metaData,
41             IColumnFilter columnFilter) throws DataSetException
42     {
43         _tableName = metaData.getTableName();
44         _columns = getFilteredColumns(_tableName, metaData.getColumns(), columnFilter);
45         _primaryKeys = getFilteredColumns(_tableName, metaData.getPrimaryKeys(), columnFilter);
46     }
47
48     public static Column[] getFilteredColumns(String JavaDoc tableName,
49             Column[] columns, IColumnFilter columnFilter)
50     {
51         if (columns == null)
52         {
53             return new Column[0];
54         }
55         
56         List JavaDoc columnList = new ArrayList JavaDoc();
57         for (int i = 0; i < columns.length; i++)
58         {
59             Column column = columns[i];
60             if (columnFilter.accept(tableName, column))
61             {
62                 columnList.add(column);
63             }
64         }
65         return (Column[])columnList.toArray(new Column[0]);
66     }
67
68     ////////////////////////////////////////////////////////////////////////////
69 // ITableMetaData interface
70
71     public String JavaDoc getTableName()
72     {
73         return _tableName;
74     }
75
76     public Column[] getColumns() throws DataSetException
77     {
78         return _columns;
79     }
80
81     public Column[] getPrimaryKeys() throws DataSetException
82     {
83         return _primaryKeys;
84     }
85 }
86
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