public CompositeDataSet(IDataSet dataSet1, IDataSet dataSet2) throws DataSetException
public CompositeDataSet(IDataSet[] dataSets) throws DataSetException
    public CompositeDataSet(IDataSet dataSet1, IDataSet dataSet2)            throws DataSetException    {        super(combineTables(new IDataSet[]{dataSet1, dataSet2}));    }