Class InitializedValueSelector<Solution_>
java.lang.Object
org.optaplanner.core.impl.heuristic.selector.AbstractSelector<Solution_>
org.optaplanner.core.impl.heuristic.selector.AbstractDemandEnabledSelector<Solution_>
org.optaplanner.core.impl.heuristic.selector.value.decorator.InitializedValueSelector<Solution_>
- All Implemented Interfaces:
EventListener
,Selector<Solution_>
,ValueSelector<Solution_>
,PhaseLifecycleListener<Solution_>
,SolverLifecycleListener<Solution_>
- Direct Known Subclasses:
EntityIndependentInitializedValueSelector
public class InitializedValueSelector<Solution_>
extends AbstractDemandEnabledSelector<Solution_>
implements ValueSelector<Solution_>
Prevents creating chains without an anchor.
Filters out every value that is a planning entity for which the PlanningVariable
(on which this ValueSelector
applies to) is uninitialized.
Mainly used for chained planning variables, but supports other planning variables too.
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionprotected class
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Field Summary
Fields inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector
logger, phaseLifecycleSupport, workingRandom
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Method Summary
Modifier and TypeMethodDescriptionprotected boolean
static <Solution_>
ValueSelector<Solution_>create
(ValueSelector<Solution_> valueSelector) protected long
determineBailOutSize
(Object entity) endingIterator
(Object entity) IfSelector.isNeverEnding()
is true, thenValueSelector.iterator(Object)
will never end.boolean
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).Similar toIterable.iterator()
, but requires an entity.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, finalize, getClass, notify, notifyAll, wait, wait, wait
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
Methods inherited from interface org.optaplanner.core.impl.solver.event.SolverLifecycleListener
solvingEnded, solvingError, solvingStarted
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Method Details
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create
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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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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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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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determineBailOutSize
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accept
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equals
- Specified by:
equals
in classAbstractDemandEnabledSelector<Solution_>
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hashCode
public int hashCode()- Specified by:
hashCode
in classAbstractDemandEnabledSelector<Solution_>
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toString
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