Package org.uma.jmetal.util.comparator

Class ObjectiveComparator<S extends Solution<?>>

java.lang.Object

org.uma.jmetal.util.comparator.ObjectiveComparator<S>

All Implemented Interfaces:

Serializable, Comparator<S>

public class ObjectiveComparator<S extends Solution<?>>
extends Object
implements Comparator<S>, Serializable

This class implements a comparator based on a given objective

Author:

Antonio J. Nebro <antonio@lcc.uma.es>

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	ObjectiveComparator.Ordering

Constructor Summary

Constructors

Constructor	Description
ObjectiveComparator(int objectiveId)	Constructor.
ObjectiveComparator(int objectiveId, ObjectiveComparator.Ordering order)	Comparator.

Method Summary

Modifier and Type	Method	Description
int	compare(S solution1, S solution2)	Compares two solutions according to a given objective.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Details

ObjectiveComparator

public ObjectiveComparator(int objectiveId)

Constructor.

Parameters:

objectiveId - The index of the objective to compare

ObjectiveComparator

public ObjectiveComparator(int objectiveId,
 ObjectiveComparator.Ordering order)

Comparator.

Parameters:

objectiveId - The index of the objective to compare

order - Ascending or descending order

Method Details

compare

public int compare(S solution1,
 S solution2)

Compares two solutions according to a given objective.

Specified by:

compare in interface Comparator<S extends Solution<?>>

Parameters:

solution1 - The first solution

solution2 - The second solution

Returns:

-1, or 0, or 1 if solution1 is less than, equal, or greater than solution2, respectively, according to the established order