Class UnassignedValueSelector<Solution_>
java.lang.Object
org.optaplanner.core.impl.heuristic.selector.AbstractSelector<Solution_>
org.optaplanner.core.impl.heuristic.selector.value.AbstractValueSelector<Solution_>
org.optaplanner.core.impl.heuristic.selector.value.decorator.UnassignedValueSelector<Solution_>
- All Implemented Interfaces:
Iterable<Object>
,EventListener
,IterableSelector<Solution_,
,Object> Selector<Solution_>
,EntityIndependentValueSelector<Solution_>
,ValueSelector<Solution_>
,PhaseLifecycleListener<Solution_>
,SolverLifecycleListener<Solution_>
Only selects values from the child value selector that are unassigned.
This used for
QueuedValuePlacer
’s recording value selector during Construction Heuristic phase
to prevent reassigning of values that are already assigned to a list variable.-
Field Summary
Modifier and TypeFieldDescriptionprotected final EntityIndependentValueSelector<Solution_>
protected SingletonInverseVariableSupply
Fields inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector
logger, phaseLifecycleSupport, workingRandom
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Constructor Summary
ConstructorDescriptionUnassignedValueSelector
(EntityIndependentValueSelector<Solution_> childValueSelector) -
Method Summary
Modifier and TypeMethodDescriptionendingIterator
(Object entity) IfSelector.isNeverEnding()
is true, thenValueSelector.iterator(Object)
will never end.boolean
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
.long
Similar toIterableSelector.getSize()
, but requires an entity.int
hashCode()
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()
Similar toIterable.iterator()
, but requires an entity.void
phaseEnded
(AbstractPhaseScope<Solution_> phaseScope) void
phaseStarted
(AbstractPhaseScope<Solution_> phaseScope) toString()
protected boolean
valueFilter
(Object value) Methods inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector
getCacheType, solvingEnded, solvingStarted, stepEnded, stepStarted
Methods inherited from class java.lang.Object
clone, finalize, getClass, 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
stepEnded, stepStarted
Methods inherited from interface org.optaplanner.core.impl.heuristic.selector.Selector
getCacheType
Methods inherited from interface org.optaplanner.core.impl.solver.event.SolverLifecycleListener
solvingEnded, solvingError, solvingStarted
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Field Details
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childValueSelector
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inverseVariableSupply
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Constructor Details
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UnassignedValueSelector
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Method Details
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valueFilter
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toString
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phaseStarted
- Specified by:
phaseStarted
in interfacePhaseLifecycleListener<Solution_>
- Overrides:
phaseStarted
in classAbstractSelector<Solution_>
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phaseEnded
- Specified by:
phaseEnded
in interfacePhaseLifecycleListener<Solution_>
- Overrides:
phaseEnded
in classAbstractSelector<Solution_>
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getVariableDescriptor
- Specified by:
getVariableDescriptor
in interfaceValueSelector<Solution_>
- Returns:
- never null
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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
Description copied from interface:ValueSelector
Similar toIterableSelector.getSize()
, but requires an entity.- Specified by:
getSize
in interfaceValueSelector<Solution_>
- Parameters:
entity
- never null- Returns:
- the approximate number of elements generated by this
Selector
, always>= 0
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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
.- Specified by:
getSize
in interfaceIterableSelector<Solution_,
Object> - Returns:
- the approximate number of elements generated by this
Selector
, always>= 0
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iterator
Description copied from interface:ValueSelector
Similar toIterable.iterator()
, but requires an entity.- Specified by:
iterator
in interfaceValueSelector<Solution_>
- Parameters:
entity
- never null- Returns:
- never null
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iterator
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endingIterator
Description copied from interface:ValueSelector
IfSelector.isNeverEnding()
is true, thenValueSelector.iterator(Object)
will never end. This returns an endingIterator
, that tries to matchValueSelector.iterator(Object)
as much as possible, but return each distinct element only once and therefore it might not respect the configuration of thisValueSelector
entirely.- Specified by:
endingIterator
in interfaceValueSelector<Solution_>
- Parameters:
entity
- never null- Returns:
- never null
- See Also:
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equals
- Specified by:
equals
in classAbstractValueSelector<Solution_>
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hashCode
public int hashCode()- Specified by:
hashCode
in classAbstractValueSelector<Solution_>
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