Package org.optaplanner.core.impl.heuristic.selector.move.factory

Interface MoveIteratorFactory<Solution_,Move_ extends Move<Solution_>>

Type Parameters:

Solution_ - the solution type, the class with the PlanningSolution annotation

public interface MoveIteratorFactory<Solution_,Move_ extends Move<Solution_>>

An interface to generate an Iterator of custom Moves.

For a more simple version, see MoveListFactory.

Method Summary

Modifier and Type	Method	Description
Iterator<Move_>	createOriginalMoveIterator(ScoreDirector<Solution_> scoreDirector)	When it is called depends on the configured SelectionCacheType.
Iterator<Move_>	createRandomMoveIterator(ScoreDirector<Solution_> scoreDirector, Random workingRandom)	When it is called depends on the configured SelectionCacheType.
long	getSize(ScoreDirector<Solution_> scoreDirector)
default void	phaseEnded(ScoreDirector<Solution_> scoreDirector)	Called when the phase (for example Local Search) ends, to clean up anything cached since phaseStarted(ScoreDirector).
default void	phaseStarted(ScoreDirector<Solution_> scoreDirector)	Called when the phase (for example Local Search) starts.

Method Details

phaseStarted

default void phaseStarted(ScoreDirector<Solution_> scoreDirector)

Called when the phase (for example Local Search) starts.

Parameters:

scoreDirector - never null

phaseEnded

default void phaseEnded(ScoreDirector<Solution_> scoreDirector)

Called when the phase (for example Local Search) ends, to clean up anything cached since phaseStarted(ScoreDirector).

Parameters:

scoreDirector - never null

getSize

long getSize(ScoreDirector<Solution_> scoreDirector)

Parameters:

scoreDirector - never null, the ScoreDirector which has the ScoreDirector.getWorkingSolution() of which the Moves need to be generated

Returns:

the approximate number of elements generated by createOriginalMoveIterator(ScoreDirector)

Throws:

UnsupportedOperationException - if not supported

createOriginalMoveIterator

Iterator<Move_> createOriginalMoveIterator(ScoreDirector<Solution_> scoreDirector)

When it is called depends on the configured SelectionCacheType.

Parameters:

scoreDirector - never null, the ScoreDirector which has the ScoreDirector.getWorkingSolution() of which the Moves need to be generated

Returns:

never null, an Iterator that will end sooner or later

Throws:

UnsupportedOperationException - if only createRandomMoveIterator(ScoreDirector, Random) is supported

createRandomMoveIterator

Iterator<Move_> createRandomMoveIterator(ScoreDirector<Solution_> scoreDirector,
 Random workingRandom)

When it is called depends on the configured SelectionCacheType.

Parameters:

scoreDirector - never null, the ScoreDirector which has the ScoreDirector.getWorkingSolution() of which the Moves need to be generated

workingRandom - never null, the Random to use when any random number is needed, so EnvironmentMode.REPRODUCIBLE works correctly

Returns:

never null, an Iterator that is allowed (or even presumed) to be never ending

Throws:

UnsupportedOperationException - if only createOriginalMoveIterator(ScoreDirector) is supported