mondrian.calc
Interface LevelCalc

All Superinterfaces:

Calc

All Known Implementing Classes:

AbstractLevelCalc, AbstractVoidCalc, AggregateFunDef.AggregateCalc, CacheCalc, ConstantCalc, GenericCalc, MemberArrayValueCalc, MemberLevelFunDef.CalcImpl, MemberValueCalc, TupleValueCalc, ValueCalc

public interface LevelCalc
extends Calc

Expression which yields a Level.

When implementing this interface, it is convenient to extend AbstractLevelCalc, but it is not required.

Since:

Sep 26, 2005

Author:

jhyde

Method Summary

Level

evaluateLevel(Evaluator evaluator) Evaluates this expression to yield a level.

Methods inherited from interface mondrian.calc.Calc

accept, dependsOn, evaluate, getResultStyle, getType, isWrapperFor, unwrap

Method Detail

evaluateLevel

Level evaluateLevel(Evaluator evaluator)

Evaluates this expression to yield a level.

Never returns null.

Parameters:

evaluator - Evaluation context

Returns:

a level