mondrian.calc
Interface HierarchyCalc

All Superinterfaces:

Calc

All Known Implementing Classes:

AbstractHierarchyCalc, AbstractVoidCalc, AggregateFunDef.AggregateCalc, CacheCalc, ConstantCalc, GenericCalc, LevelHierarchyFunDef.CalcImpl, MemberArrayValueCalc, MemberHierarchyFunDef.CalcImpl, MemberValueCalc, TupleValueCalc, ValueCalc

public interface HierarchyCalc
extends Calc

Expression which yields a Hierarchy.

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

Since:

Sep 26, 2005

Author:

jhyde

Method Summary

Hierarchy

evaluateHierarchy(Evaluator evaluator) Evaluates this expression to yield a hierarchy.

Methods inherited from interface mondrian.calc.Calc

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

Method Detail

evaluateHierarchy

Hierarchy evaluateHierarchy(Evaluator evaluator)

Evaluates this expression to yield a hierarchy.

Never returns null.

Parameters:

evaluator - Evaluation context

Returns:

a hierarchy