hep.aida.ref.tuple
Class Evaluator

java.lang.Object
  hep.aida.ref.tuple.Evaluator

All Implemented Interfaces:

IEvaluator

public class Evaluator
extends Object
implements IEvaluator

Constructor Summary

Evaluator(String expression)
Default contructor.

Method Summary

double	evaluateDouble() Evaluate the IEvaluator from the data in the current row of the ITuple it is associated to.
String	expression() Get the expression that defined the IEvaluator.
void	initialize(ITuple tuple) Initialize the IEvaluator and associate it to an ITuple.

Methods inherited from class java.lang.Object

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

Constructor Detail

Evaluator

public Evaluator(String expression)

Default contructor.

Parameters:

expression - The expression to evaluate on the tuple.

Method Detail

expression

public String expression()

Description copied from interface: IEvaluator

Get the expression that defined the IEvaluator.

Specified by:

expression in interface IEvaluator

Returns:

The expression.

initialize

public void initialize(ITuple tuple)

Description copied from interface: IEvaluator

Initialize the IEvaluator and associate it to an ITuple.

Specified by:

initialize in interface IEvaluator

Parameters:

tuple - The ITuple to which the IEvaluator is associated.

evaluateDouble

public double evaluateDouble()

Description copied from interface: IEvaluator

Evaluate the IEvaluator from the data in the current row of the ITuple it is associated to.

Specified by:

evaluateDouble in interface IEvaluator

Returns:

The current value of the Evaluator.