Package org.moeaframework.problem

Class ProblemStub

java.lang.Object

org.moeaframework.problem.AbstractProblem

org.moeaframework.problem.ProblemStub

All Implemented Interfaces:

AutoCloseable, Problem

public class ProblemStub
extends AbstractProblem

A problem stub with a defined number of objectives, but no decision variables or constraints. This is often used by the command-line tools when we only need to know the number of objectives. Calls to evaluate(Solution) will throw UnsupportedOperationException.

Field Summary

Fields inherited from class org.moeaframework.problem.AbstractProblem

numberOfConstraints, numberOfObjectives, numberOfVariables

Constructor Summary

Constructors

Constructor	Description
ProblemStub(int numberOfObjectives)	Constructs a problem stub with the specified number of objectives.

Method Summary

Modifier and Type	Method	Description
void	evaluate(Solution solution)	Throws UnsupportedOperationException.
Solution	newSolution()	Returns a new solution for this problem.

Methods inherited from class org.moeaframework.problem.AbstractProblem

close, getName, getNumberOfConstraints, getNumberOfObjectives, getNumberOfVariables

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.moeaframework.core.Problem

isType

Constructor Details

ProblemStub

public ProblemStub(int numberOfObjectives)

Constructs a problem stub with the specified number of objectives.

Parameters:

numberOfObjectives - the number of objectives

Method Details

evaluate

public void evaluate(Solution solution)

Throws UnsupportedOperationException.

Parameters:

solution - the solution to be evaluated

Throws:

UnsupportedOperationException - always

newSolution

public Solution newSolution()

Description copied from interface: Problem

Returns a new solution for this problem. Implementations must initialize the variables so that the valid range of values is defined, but typically leave the actual value at a default or undefined state.

Returns:

a new solution for this problem