cachedStartingGroupLevel = exprResultSet.getStartingGroupLevel( ); }
	public boolean next( ) throws DataException	{		if ( this.exprResultSet.getCurrentIndex( ) >= 0 ) // not the first row			exprResultSet.skipToEnd( lowestGroupLevel );		boolean hasNext = super.next( );		if ( hasNext )			currRowIndex++;		return hasNext;	}