public AggregateRegistry getAggrRegistry( int groupLevel, boolean isDetailedRow, Context cx )
public AggregateRegistry getAggrRegistry( int groupLevel, int calculationLevel, boolean isDetailedRow, Context cx ) throws DataException
	public AggregateRegistry getAggrRegistry( int groupLevel,			boolean isDetailedRow, Context cx )	{		AggrRegistry aggrRegistry = new AggrRegistry( groupLevel,				isDetailedRow,				cx );		aggrRegistry.prepare( groupDefns, scope, baseQuery, aggrExprInfoList );		return aggrRegistry;	}