if ( isFormatNeeded( obj, operator, op1, op2 ) )
if ( needFormat( obj, operator, op1, op2 ) )
		private static Object[] isComparable( Object obj, int operator,				ExprTextAndValue op1, ExprTextAndValue op2 )				throws DataException		{			if ( isFormatNeeded( obj, operator, op1, op2 ) )				return formatToComparable( obj, op1, op2 );			return null;		}