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


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.ArrayList JavaDoc;
27 import java.util.List JavaDoc;
28
29 /**
30  * @author Manuel Laflamme
31  * @version $Revision: 1.10 $
32  * @since Mar 8, 2002
33  */
34 public abstract class AbstractTableMetaData implements ITableMetaData
35 {
36     private static final Column[] EMPTY_COLUMNS = new Column[0];
37
38     protected static Column[] getPrimaryKeys(Column[] columns, String JavaDoc[] keyNames)
39     {
40         if (keyNames == null || keyNames.length == 0)
41         {
42             return EMPTY_COLUMNS;
43         }
44
45         List JavaDoc keyList = new ArrayList JavaDoc();
46         for (int i = 0; i < keyNames.length; i++)
47         {
48             Column primaryKey = DataSetUtils.getColumn(keyNames[i], columns);
49             if (primaryKey != null)
50             {
51                 keyList.add(primaryKey);
52             }
53         }
54
55         return (Column[])keyList.toArray(new Column[0]);
56     }
57
58     protected static Column[] getPrimaryKeys(String JavaDoc tableName, Column[] columns,
59             IColumnFilter columnFilter)
60     {
61         List JavaDoc keyList = new ArrayList JavaDoc();
62         for (int i = 0; i < columns.length; i++)
63         {
64             Column column = columns[i];
65             if (columnFilter.accept(tableName, column))
66             {
67                 keyList.add(column);
68             }
69         }
70
71         return (Column[])keyList.toArray(new Column[0]);
72     }
73 }
74
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