mondrian.calc.impl
Class AbstractVoidCalc

java.lang.Object
  mondrian.calc.impl.AbstractCalc
      mondrian.calc.impl.GenericCalc
          mondrian.calc.impl.AbstractVoidCalc

All Implemented Interfaces:

BooleanCalc, Calc, DateTimeCalc, DimensionCalc, DoubleCalc, HierarchyCalc, IntegerCalc, LevelCalc, MemberCalc, StringCalc, TupleCalc, VoidCalc

public class AbstractVoidCalc
extends GenericCalc
implements VoidCalc

Abstract implementation of the VoidCalc interface.

The derived class must implement the GenericCalc.evaluateVoid(mondrian.olap.Evaluator) method, and the evaluate(mondrian.olap.Evaluator) method will call it and return null.

Since:

Sep 29, 2005

Author:

jhyde

Field Summary

Fields inherited from class mondrian.calc.impl.AbstractCalc

exp, type

Constructor Summary

protected

AbstractVoidCalc(Exp exp, Calc[] calcs)

Method Summary

Object	evaluate(Evaluator evaluator) Evaluates this expression.
Calc[]	getCalcs() Returns this expression's child expressions.

Methods inherited from class mondrian.calc.impl.GenericCalc

evaluateBoolean, evaluateDateTime, evaluateDimension, evaluateDouble, evaluateHierarchy, evaluateInteger, evaluateLevel, evaluateMember, evaluateString, evaluateTuple, evaluateVoid, numberToDouble

Methods inherited from class mondrian.calc.impl.AbstractCalc

accept, anyDepends, anyDependsButFirst, butDepends, collectArguments, dependsOn, getArguments, getName, getResultStyle, getType, isWrapperFor, simplifyEvaluator, unwrap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface mondrian.calc.VoidCalc

evaluateVoid

Methods inherited from interface mondrian.calc.Calc

accept, dependsOn, getResultStyle, getType, isWrapperFor, unwrap

Constructor Detail

AbstractVoidCalc

protected AbstractVoidCalc(Exp exp,
                           Calc[] calcs)

Method Detail

evaluate

public Object evaluate(Evaluator evaluator)

Description copied from interface: Calc

Evaluates this expression.

Specified by:

evaluate in interface Calc

Parameters:

evaluator - Provides dimensional context in which to evaluate this expression

Returns:

Result of expression evaluation

getCalcs

public Calc[] getCalcs()

Description copied from class: AbstractCalc

Returns this expression's child expressions.

Overrides:

getCalcs in class AbstractCalc