1   package org.dbunit.dataset;
2   
3   /**
4    * <p> Copyright (c) 2003 OZ.COM.  All Rights Reserved. </p>
5    * 
6    * @author manuel.laflamme
7    * @since Mar 30, 2004
8    */
9   public class EmptyTableDataSet extends AbstractDataSet
10  {
11      private final IDataSet _dataSet;
12  
13      public EmptyTableDataSet(IDataSet dataSet)
14      {
15          _dataSet = dataSet;
16      }
17  
18      ////////////////////////////////////////////////////////////////////////////
19      // IDataSet interface
20  
21      public String[] getTableNames() throws DataSetException
22      {
23          return _dataSet.getTableNames();
24      }
25  
26      public ITableMetaData getTableMetaData(String tableName) throws DataSetException
27      {
28          return _dataSet.getTableMetaData(tableName);    
29      }
30  
31      public ITable getTable(String tableName) throws DataSetException
32      {
33          return new DefaultTable(_dataSet.getTableMetaData(tableName));
34      }
35  
36      ////////////////////////////////////////////////////////////////////////////
37      // AbstractDataSet class
38  
39      protected ITableIterator createIterator(boolean reversed) throws DataSetException
40      {
41          return new EmptyTableIterator(reversed ?
42                  _dataSet.reverseIterator() : _dataSet.iterator());
43      }
44  
45      public static class EmptyTableIterator implements ITableIterator
46      {
47          private final ITableIterator _iterator;
48  
49          public EmptyTableIterator(ITableIterator iterator)
50          {
51              _iterator = iterator;
52          }
53  
54          public boolean next() throws DataSetException
55          {
56              return _iterator.next();
57          }
58  
59          public ITableMetaData getTableMetaData() throws DataSetException
60          {
61              return _iterator.getTableMetaData();
62          }
63  
64          public ITable getTable() throws DataSetException
65          {
66              return new DefaultTable(_iterator.getTableMetaData());
67          }
68      }
69  }