View Javadoc
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  package org.dbunit.dataset;
22  
23  import org.slf4j.Logger;
24  import org.slf4j.LoggerFactory;
25  
26  /**
27   * @author Manuel Laflamme
28   * @since Apr 9, 2003
29   * @version $Revision$
30   */
31  public class ForwardOnlyTable implements ITable
32  {
33  
34      /**
35       * Logger for this class
36       */
37      private static final Logger logger = LoggerFactory.getLogger(ForwardOnlyTable.class);
38  
39      private final ITable _table;
40      private int _lastRow = -1;
41  
42      public ForwardOnlyTable(ITable table)
43      {
44          _table = table;
45      }
46  
47      ////////////////////////////////////////////////////////////////////////////
48      // ITable interface
49  
50      public ITableMetaData getTableMetaData()
51      {
52          return _table.getTableMetaData();
53      }
54  
55      public int getRowCount()
56      {
57          throw new UnsupportedOperationException();
58      }
59  
60      public Object getValue(int row, String column) throws DataSetException
61      {
62          if(logger.isDebugEnabled())
63              logger.debug("getValue(row={}, columnName={}) - start", Integer.toString(row), column);
64  
65          if (row < _lastRow)
66          {
67              throw new UnsupportedOperationException("Cannot go backward!");
68          }
69  
70          _lastRow = row;
71          return _table.getValue(row, column);
72      }
73  }