Class DefaultPillarSelector<Solution_>
java.lang.Object
org.optaplanner.core.impl.heuristic.selector.AbstractSelector<Solution_>
org.optaplanner.core.impl.heuristic.selector.entity.pillar.DefaultPillarSelector<Solution_>
- All Implemented Interfaces:
Iterable<List<Object>>
,EventListener
,ListIterable<List<Object>>
,SelectionCacheLifecycleListener<Solution_>
,PillarSelector<Solution_>
,IterableSelector<Solution_,
,List<Object>> ListIterableSelector<Solution_,
,List<Object>> Selector<Solution_>
,PhaseLifecycleListener<Solution_>
,SolverLifecycleListener<Solution_>
public final class DefaultPillarSelector<Solution_>
extends AbstractSelector<Solution_>
implements PillarSelector<Solution_>, SelectionCacheLifecycleListener<Solution_>
- See Also:
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Field Summary
Fields inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector
logger, phaseLifecycleSupport, workingRandom
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Constructor Summary
ConstructorDescriptionDefaultPillarSelector
(EntitySelector<Solution_> entitySelector, List<GenuineVariableDescriptor<Solution_>> variableDescriptors, boolean randomSelection, SubPillarConfigPolicy subpillarConfigPolicy) -
Method Summary
Modifier and TypeMethodDescriptionvoid
constructCache
(SolverScope<Solution_> solverScope) void
disposeCache
(SolverScope<Solution_> solverScope) Unless this selector itself caches, this returnsSelectionCacheType.JUST_IN_TIME
, even if a selector child caches.long
getSize()
A random JITSelector
withSelector.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 inSelectionProbabilityWeightFactory
.boolean
If false, thenSelector.isNeverEnding()
is true.boolean
Is true ifSelector.isCountable()
is false or if this selector is in random order (for most cases).iterator()
listIterator
(int index) toString()
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 org.optaplanner.core.impl.heuristic.selector.IterableSelector
spliterator
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, solvingError, solvingStarted
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Constructor Details
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DefaultPillarSelector
public DefaultPillarSelector(EntitySelector<Solution_> entitySelector, List<GenuineVariableDescriptor<Solution_>> variableDescriptors, boolean randomSelection, SubPillarConfigPolicy subpillarConfigPolicy)
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Method Details
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getEntityDescriptor
- Specified by:
getEntityDescriptor
in interfacePillarSelector<Solution_>
- Returns:
- never null
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getCacheType
Description copied from interface:Selector
Unless this selector itself caches, this returnsSelectionCacheType.JUST_IN_TIME
, even if a selector child caches.- Specified by:
getCacheType
in interfaceSelector<Solution_>
- Overrides:
getCacheType
in classAbstractSelector<Solution_>
- Returns:
- never null
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constructCache
- Specified by:
constructCache
in interfaceSelectionCacheLifecycleListener<Solution_>
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disposeCache
- Specified by:
disposeCache
in interfaceSelectionCacheLifecycleListener<Solution_>
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isCountable
public boolean isCountable()Description copied from interface:Selector
If false, thenSelector.isNeverEnding()
is true.- Specified by:
isCountable
in interfaceSelector<Solution_>
- Returns:
- true if all the
ValueRange
s are countable (for example a double value range between 1.2 and 1.4 is not countable)
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isNeverEnding
public boolean isNeverEnding()Description copied from interface:Selector
Is true ifSelector.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 interfaceSelector<Solution_>
- Returns:
- true if the
Iterator.hasNext()
of theIterator
created byIterable.iterator()
never returns false (except when it's empty).
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getSize
public long getSize()Description copied from interface:IterableSelector
A random JITSelector
withSelector.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 inSelectionProbabilityWeightFactory
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iterator
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listIterator
- Specified by:
listIterator
in interfaceListIterable<Solution_>
- Returns:
- never null, see
List.listIterator()
. - See Also:
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listIterator
- Specified by:
listIterator
in interfaceListIterable<Solution_>
- Parameters:
index
- lower than the size of thisListIterable
, seeList.listIterator(int)
.- Returns:
- never null, see
List.listIterator(int)
. - See Also:
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toString
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