org.moeaframework.core.spi
Class ProblemFactory

java.lang.Object
  org.moeaframework.core.spi.ProblemFactory

public class ProblemFactory
extends Object

Factory for creating optimization problem instances and their corresponding reference sets, if known. See ProblemProvider for details on adding new providers.

This class is thread safe.

Constructor Summary

ProblemFactory()
Constructs a new problem factory.

Method Summary

static ProblemFactory	getInstance() Returns the default problem factory.
Problem	getProblem(String name) Searches through all discovered ProblemProvider instances, returning an instance of the problem with the registered name.
NondominatedPopulation	getReferenceSet(String name) Searches through all discovered ProblemProvider instances, returning the reference set of the problem with the registered name.
static void	setInstance(ProblemFactory instance) Sets the default problem factory.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProblemFactory

public ProblemFactory()

Constructs a new problem factory.

Method Detail

getInstance

public static ProblemFactory getInstance()

Returns the default problem factory.

Returns:

the default problem factory

setInstance

public static void setInstance(ProblemFactory instance)

Sets the default problem factory.

Parameters:

instance - the default problem factory

getProblem

public Problem getProblem(String name)

Searches through all discovered ProblemProvider instances, returning an instance of the problem with the registered name. This method must throw an ProviderNotFoundException if no matching problem is found.

Parameters:

name - the name identifying the problem

Returns:

an instance of the problem with the registered name

Throws:

ProviderNotFoundException - if no provider for the problem is available

getReferenceSet

public NondominatedPopulation getReferenceSet(String name)

Searches through all discovered ProblemProvider instances, returning the reference set of the problem with the registered name. Returns null if no reference set is available for the specified problem.

Parameters:

name - the name identifying the problem

Returns:

the reference set of the problem with the registered name; or null if no reference set is available