Class DowncastingValueSelector<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.DowncastingValueSelector<Solution_>
- All Implemented Interfaces:
EventListener
,Selector<Solution_>
,ValueSelector<Solution_>
,PhaseLifecycleListener<Solution_>
,SolverLifecycleListener<Solution_>
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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
ConstructorDescriptionDowncastingValueSelector
(ValueSelector<Solution_> childValueSelector, Class<?> downcastEntityClass) -
Method Summary
Modifier and TypeMethodDescriptionendingIterator
(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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Constructor Details
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DowncastingValueSelector
public DowncastingValueSelector(ValueSelector<Solution_> childValueSelector, Class<?> downcastEntityClass)
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Method Details
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getChildValueSelector
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getVariableDescriptor
- Returns:
- never null
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isCountable
public boolean isCountable()Description copied from interface:Selector
If false, thenSelector.isNeverEnding()
is true.- 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).- 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.- 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.- 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.- 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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toString
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