BooleanCalc (Pentaho Community Edition Project: mondrian 9.4.0.0-343 API)

All Superinterfaces:

Calc

All Known Implementing Classes:

AbstractBooleanCalc, AbstractVoidCalc, AggregateFunDef.AggregateCalc, CacheCalc, ConstantCalc, GenericCalc, MemberArrayValueCalc, MemberValueCalc, TupleValueCalc, ValueCalc
```
public interface BooleanCalc
extends Calc
```
Compiled expression whose result is a boolean.
When implementing this interface, it is convenient to extend AbstractBooleanCalc, but it is not required.

Since:

Sep 27, 2005

Author:

jhyde

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  boolean evaluateBoolean(Evaluator evaluator)
  Evaluates this expression to yield a boolean value.
  - Methods inherited from interface mondrian.calc.Calc
    accept, dependsOn, evaluate, getResultStyle, getType, isWrapperFor, unwrap

- Method Detail
  - evaluateBoolean
```
boolean evaluateBoolean(Evaluator evaluator)
```
    Evaluates this expression to yield a boolean value. If the result is null, returns the special FunUtil.BooleanNull value.
    
    Parameters:
    
    evaluator - Evaluation context
    
    Returns:
    
    evaluation result