Package org.optaplanner.core.impl.heuristic.selector.value.decorator

Class ShufflingValueSelector

java.lang.Object

org.optaplanner.core.impl.heuristic.selector.AbstractSelector

org.optaplanner.core.impl.heuristic.selector.value.AbstractValueSelector

org.optaplanner.core.impl.heuristic.selector.value.decorator.AbstractCachingValueSelector

org.optaplanner.core.impl.heuristic.selector.value.decorator.ShufflingValueSelector

All Implemented Interfaces:

Iterable<Object>, EventListener, SelectionCacheLifecycleListener, IterableSelector<Object>, Selector, EntityIndependentValueSelector, ValueSelector, PhaseLifecycleListener, SolverLifecycleListener

public class ShufflingValueSelector
extends AbstractCachingValueSelector
implements EntityIndependentValueSelector

Field Summary

Fields inherited from class org.optaplanner.core.impl.heuristic.selector.value.decorator.AbstractCachingValueSelector

cachedValueList, cacheType, childValueSelector

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

logger, phaseLifecycleSupport, workingRandom

Constructor Summary

Constructors

Constructor	Description
ShufflingValueSelector(EntityIndependentValueSelector childValueSelector, SelectionCacheType cacheType)

Method Summary

Modifier and Type	Method	Description
boolean	isNeverEnding()	Is true if Selector.isCountable() is false or if this selector is in random order (for most cases).
Iterator<Object>	iterator()
Iterator<Object>	iterator(Object entity)	Similar to Iterable.iterator(), but requires an entity.
String	toString()

Methods inherited from class org.optaplanner.core.impl.heuristic.selector.value.decorator.AbstractCachingValueSelector

constructCache, disposeCache, endingIterator, endingIterator, getCacheType, getChildValueSelector, getSize, getSize, getVariableDescriptor, isCountable

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

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, spliterator

Methods inherited from interface org.optaplanner.core.impl.heuristic.selector.IterableSelector

getSize

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

phaseEnded, phaseStarted, stepEnded, stepStarted

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

getCacheType, isCountable

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

solvingEnded, solvingStarted

Methods inherited from interface org.optaplanner.core.impl.heuristic.selector.value.ValueSelector

endingIterator, getSize, getVariableDescriptor

Constructor Detail

ShufflingValueSelector

public ShufflingValueSelector(EntityIndependentValueSelector childValueSelector,
                              SelectionCacheType cacheType)

Method Detail

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).

Specified by:

isNeverEnding in interface Selector

Returns:

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

iterator

public Iterator<Object> iterator(Object entity)

Description copied from interface: ValueSelector

Similar to Iterable.iterator(), but requires an entity.

Specified by:

iterator in interface ValueSelector

Parameters:

entity - never null

Returns:

never null

iterator

public Iterator<Object> iterator()

Specified by:

iterator in interface Iterable<Object>

toString

public String toString()

Overrides:

toString in class Object