org.ow2.proactive.resourcemanager.selection.statistics

Class Probability

java.lang.Object

org.ow2.proactive.resourcemanager.selection.statistics.Probability

public class Probability
extends Object

This class represents probability entity, provides means for increasing and decreasing it indefinitely and subjects to the following properties:
1. Value always stays in bounds between 0 and 1 including ends.
2. By calling "increase" method it goes to 1 but never reach it.
3. By calling "decrease" method it goes to 0 but never reach it.
4. By calling "increase" method N times and then "decrease" method N times it goes to the initial value.

Field Summary

Fields

Modifier and Type	Field and Description
static Probability	ONE
static Probability	ZERO

Constructor Summary

Constructors

Constructor and Description
Probability(double probability) Creates an object with given probability

Method Summary

Modifier and Type	Method and Description
void	decrease() Sets the probability to zero until the timer restores it.
static double	defaultValue() Calculates default probability value
void	increase() Increases the probability
String	toString() Returns string probability representation
double	value() Returns the probability value

Methods inherited from class java.lang.Object

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

Field Detail

ZERO

public static final Probability ZERO

ONE

public static final Probability ONE

Constructor Detail

Probability

public Probability(double probability)

Creates an object with given probability

Method Detail

value

public double value()

Returns the probability value

defaultValue

public static double defaultValue()

Calculates default probability value

decrease

public void decrease()

Sets the probability to zero until the timer restores it. It's done to pause the permanent execution of dynamic selection scripts

increase

public void increase()

Increases the probability

toString

public String toString()

Returns string probability representation

Overrides:

toString in class Object