Package ai.timefold.solver.core.impl.heuristic.selector.move.generic.list

Class RandomSubListSwapMoveSelector<Solution_>

java.lang.Object

ai.timefold.solver.core.impl.heuristic.selector.AbstractSelector<Solution_>

ai.timefold.solver.core.impl.heuristic.selector.move.AbstractMoveSelector<Solution_>

ai.timefold.solver.core.impl.heuristic.selector.move.generic.GenericMoveSelector<Solution_>

ai.timefold.solver.core.impl.heuristic.selector.move.generic.list.RandomSubListSwapMoveSelector<Solution_>

All Implemented Interfaces:

IterableSelector<Solution_,Move<Solution_>>, MoveSelector<Solution_>, Selector<Solution_>, PhaseLifecycleListener<Solution_>, SolverLifecycleListener<Solution_>, Iterable<Move<Solution_>>, EventListener

public class RandomSubListSwapMoveSelector<Solution_>
extends GenericMoveSelector<Solution_>

Field Summary

Fields inherited from class ai.timefold.solver.core.impl.heuristic.selector.AbstractSelector

logger, phaseLifecycleSupport, workingRandom

Constructor Summary

Constructors

Constructor	Description
RandomSubListSwapMoveSelector(SubListSelector<Solution_> leftSubListSelector, SubListSelector<Solution_> rightSubListSelector, boolean selectReversingMoveToo)

Method Summary

Modifier and Type	Method	Description
long	getSize()	A random JIT Selector with Selector.isNeverEnding() true should return a size as if it would be able to return each distinct element only once, because the size can be used in SelectionProbabilityWeightFactory.
boolean	isCountable()	If false, then Selector.isNeverEnding() is true.
boolean	isNeverEnding()	Is true if Selector.isCountable() is false or if this selector is in random order (for most cases).
Iterator<Move<Solution_>>	iterator()
String	toString()

Methods inherited from class ai.timefold.solver.core.impl.heuristic.selector.AbstractSelector

getCacheType, phaseEnded, phaseStarted, solvingEnded, solvingStarted, stepEnded, stepStarted

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface ai.timefold.solver.core.impl.heuristic.selector.IterableSelector

spliterator

Methods inherited from interface ai.timefold.solver.core.impl.heuristic.selector.move.MoveSelector

supportsPhaseAndSolverCaching

Methods inherited from interface ai.timefold.solver.core.impl.phase.event.PhaseLifecycleListener

phaseEnded, phaseStarted, stepEnded, stepStarted

Methods inherited from interface ai.timefold.solver.core.impl.heuristic.selector.Selector

getCacheType

Methods inherited from interface ai.timefold.solver.core.impl.solver.event.SolverLifecycleListener

solvingEnded, solvingError, solvingStarted

Constructor Details

RandomSubListSwapMoveSelector

public RandomSubListSwapMoveSelector(SubListSelector<Solution_> leftSubListSelector,
 SubListSelector<Solution_> rightSubListSelector,
 boolean selectReversingMoveToo)

Method Details

iterator

public Iterator<Move<Solution_>> iterator()

isCountable

public boolean isCountable()

Description copied from interface: Selector

If false, then Selector.isNeverEnding() is true.

Returns:

true if all the ValueRanges are countable (for example a double value range between 1.2 and 1.4 is not countable)

isNeverEnding

public boolean isNeverEnding()

Description copied from interface: Selector

Is true if Selector.isCountable() is false or if this selector is in random order (for most cases). Is never true when this selector is in shuffled order (which is less scalable but more exact).

Returns:

true if the Iterator.hasNext() of the Iterator created by Iterable.iterator() never returns false (except when it's empty).

getSize

public long getSize()

Description copied from interface: IterableSelector

A random JIT Selector with Selector.isNeverEnding() true should return a size as if it would be able to return each distinct element only once, because the size can be used in SelectionProbabilityWeightFactory.

Returns:

the approximate number of elements generated by this Selector, always >= 0

toString

public String toString()

Overrides:

toString in class Object