saveExprOfOneRow( lastRowIndex );
saveExprOfCurrRow( lastRowIndex, currIndex );
	public void saveExprValue( int currIndex, String exprID, Object exprValue )			throws DataException	{		initSave( );		if ( currIndex != lastRowIndex )		{			try			{				saveExprOfOneRow( lastRowIndex );			}			catch ( IOException e )			{				throw new DataException( ResourceConstants.RD_SAVE_ERROR,						e,						"Result Data" );			}			exprValueMap.clear( );			lastRowIndex = currIndex;		}		exprValueMap.put( exprID, exprValue );	}