Package org.opt4j.core.domination

Class ConstraintCheckerImpl

java.lang.Object

org.opt4j.core.domination.ConstraintCheckerImpl

All Implemented Interfaces:

ConstraintChecker, IndividualSetListener, IndividualStateListener

public class ConstraintCheckerImpl
extends Object
implements ConstraintChecker, IndividualSetListener, IndividualStateListener

ConstraintCheckerImpl calculates constraint violations of infeasibility constraints.

See Also:

• ConstraintChecker

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<Constraint,Range>	constraintRanges	stores the current range of criterion values in the population for each constraint i.e.

Constructor Summary

Constructors

Constructor	Description
ConstraintCheckerImpl(Population population)	as this class listens on Population, it must be registered there

Method Summary

Modifier and Type	Method	Description
double	getConstraintViolation(Objectives o)	Calculates the constraint violation of Objectives.
void	individualAdded(IndividualSet collection, Individual individual)	Invoked if the Individual is added to the IndividualSet.
void	individualRemoved(IndividualSet collection, Individual individual)	Invoked if the Individual is removed from the IndividualSet.
void	inidividualStateChanged(Individual individual)	Invoked if the Individual changes its state.
protected boolean	isEligibleConstraint(Constraint constraint)
boolean	isFeasible(Objectives o)	Checks, if Objectives is feasible.
protected boolean	isIneligibleConstraint(Constraint constraint)

Methods inherited from class java.lang.Object

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

Field Details

constraintRanges

protected Map<Constraint,Range> constraintRanges

stores the current range of criterion values in the population for each constraint i.e. stores the minimum value in the population for each Constraint and the maimum value. make it thread safe to avoid accidental problems.

Constructor Details

ConstraintCheckerImpl

@Inject
public ConstraintCheckerImpl(Population population)

as this class listens on Population, it must be registered there

Method Details

isEligibleConstraint

protected boolean isEligibleConstraint(Constraint constraint)

isIneligibleConstraint

protected boolean isIneligibleConstraint(Constraint constraint)

getConstraintViolation

public double getConstraintViolation(Objectives o)

Calculates the constraint violation of Objectives.

Specified by:

getConstraintViolation in interface ConstraintChecker

Parameters:

o - the objectives to check

Returns:

the amount of constraint violation

isFeasible

public boolean isFeasible(Objectives o)

Checks, if Objectives is feasible.

Specified by:

isFeasible in interface ConstraintChecker

Parameters:

o - the objectives to check

Returns:

the feasibility

individualAdded

public void individualAdded(IndividualSet collection,
 Individual individual)

Description copied from interface: IndividualSetListener

Invoked if the Individual is added to the IndividualSet.

Specified by:

individualAdded in interface IndividualSetListener

Parameters:

collection - the observed collection

individual - the added individual

individualRemoved

public void individualRemoved(IndividualSet collection,
 Individual individual)

Description copied from interface: IndividualSetListener

Invoked if the Individual is removed from the IndividualSet.

Specified by:

individualRemoved in interface IndividualSetListener

Parameters:

collection - the observed collection

individual - the removed individual

inidividualStateChanged

public void inidividualStateChanged(Individual individual)

Description copied from interface: IndividualStateListener

Invoked if the Individual changes its state.

Specified by:

inidividualStateChanged in interface IndividualStateListener

Parameters:

individual - the individual that changes the state