org.optaplanner.core.impl.heuristic.selector.move.generic.chained
Class SubChainSwapMoveSelector

java.lang.Object
  org.optaplanner.core.impl.heuristic.selector.AbstractSelector
      org.optaplanner.core.impl.heuristic.selector.move.AbstractMoveSelector
          org.optaplanner.core.impl.heuristic.selector.move.generic.GenericMoveSelector
              org.optaplanner.core.impl.heuristic.selector.move.generic.chained.SubChainSwapMoveSelector

All Implemented Interfaces:

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

public class SubChainSwapMoveSelector
extends GenericMoveSelector

Field Summary

protected SubChainSelector	leftSubChainSelector
protected boolean	randomSelection
protected SubChainSelector	rightSubChainSelector
protected boolean	selectReversingMoveToo
protected GenuineVariableDescriptor	variableDescriptor

Fields inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector

logger, phaseLifecycleSupport, workingRandom

Constructor Summary

SubChainSwapMoveSelector(SubChainSelector leftSubChainSelector, SubChainSelector rightSubChainSelector, boolean randomSelection, boolean selectReversingMoveToo)

Method Summary

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>	iterator()
String	toString()

Methods inherited from class org.optaplanner.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 org.optaplanner.core.impl.heuristic.selector.Selector

getCacheType

Methods inherited from interface org.optaplanner.core.impl.phase.event.PhaseLifecycleListener

phaseEnded, phaseStarted, stepEnded, stepStarted

Methods inherited from interface org.optaplanner.core.impl.solver.event.SolverLifecycleListener

solvingEnded, solvingStarted

Field Detail

leftSubChainSelector

protected final SubChainSelector leftSubChainSelector

rightSubChainSelector

protected final SubChainSelector rightSubChainSelector

variableDescriptor

protected final GenuineVariableDescriptor variableDescriptor

randomSelection

protected final boolean randomSelection

selectReversingMoveToo

protected final boolean selectReversingMoveToo

Constructor Detail

SubChainSwapMoveSelector

public SubChainSwapMoveSelector(SubChainSelector leftSubChainSelector,
                                SubChainSelector rightSubChainSelector,
                                boolean randomSelection,
                                boolean selectReversingMoveToo)

Method Detail

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

iterator

public Iterator<Move> iterator()

toString

public String toString()

Overrides:

toString in class Object