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

Interface MoveIteratorFactory<Solution_>

Type Parameters:

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

public interface MoveIteratorFactory<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<? extends Move<Solution_>>	createOriginalMoveIterator(ScoreDirector<Solution_> scoreDirector)	When it is called depends on the configured SelectionCacheType.
Iterator<? extends Move<Solution_>>	createRandomMoveIterator(ScoreDirector<Solution_> scoreDirector, Random workingRandom)	When it is called depends on the configured SelectionCacheType.
long	getSize(ScoreDirector<Solution_> scoreDirector)

Method Detail

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<? extends Move<Solution_>> 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<? extends Move<Solution_>> 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