mondrian.calc
Interface HierarchyCalc

All Superinterfaces:
Calc
All Known Implementing Classes:
AbstractHierarchyCalc, AbstractVoidCalc, AggregateFunDef.AggregateCalc, CacheCalc, ConstantCalc, GenericCalc, LevelHierarchyFunDef.CalcImpl, 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
Version:
$Id: //open/mondrian/src/main/mondrian/calc/HierarchyCalc.java#6 $
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
 

Method Detail

evaluateHierarchy

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

Never returns null.

Parameters:
evaluator - Evaluation context
Returns:
a hierarchy

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