Class ReinitializeVariableValueSelector<Solution_>
- java.lang.Object
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- org.optaplanner.core.impl.heuristic.selector.AbstractSelector<Solution_>
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- org.optaplanner.core.impl.heuristic.selector.value.AbstractValueSelector<Solution_>
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- org.optaplanner.core.impl.heuristic.selector.value.decorator.ReinitializeVariableValueSelector<Solution_>
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- All Implemented Interfaces:
EventListener,Selector<Solution_>,ValueSelector<Solution_>,PhaseLifecycleListener<Solution_>,SolverLifecycleListener<Solution_>
public class ReinitializeVariableValueSelector<Solution_> extends AbstractValueSelector<Solution_>
Prevents reassigning of already initialized variables during Construction Heuristics and Exhaustive Search.Returns no values for an entity's variable if the variable is already initialized.
Does not implement
EntityIndependentValueSelectorbecause if used like that, it shouldn't be added during configuration in the first place.
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Field Summary
Fields Modifier and Type Field Description protected ValueSelector<Solution_>childValueSelectorprotected SelectionFilter<Solution_,Object>reinitializeVariableEntityFilterprotected ScoreDirector<Solution_>scoreDirector-
Fields inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector
logger, phaseLifecycleSupport, workingRandom
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Constructor Summary
Constructors Constructor Description ReinitializeVariableValueSelector(ValueSelector<Solution_> childValueSelector)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Iterator<Object>endingIterator(Object entity)IfSelector.isNeverEnding()is true, thenValueSelector.iterator(Object)will never end.longgetSize(Object entity)Similar toIterableSelector.getSize(), but requires an entity.GenuineVariableDescriptor<Solution_>getVariableDescriptor()booleanisCountable()If false, thenSelector.isNeverEnding()is true.booleanisNeverEnding()Is true ifSelector.isCountable()is false or if this selector is in random order (for most cases).Iterator<Object>iterator(Object entity)Similar toIterable.iterator(), but requires an entity.voidphaseEnded(AbstractPhaseScope<Solution_> phaseScope)voidphaseStarted(AbstractPhaseScope<Solution_> phaseScope)StringtoString()-
Methods inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector
getCacheType, solvingEnded, solvingStarted, stepEnded, stepStarted
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.optaplanner.core.impl.phase.event.PhaseLifecycleListener
stepEnded, stepStarted
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Methods inherited from interface org.optaplanner.core.impl.heuristic.selector.Selector
getCacheType
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Methods inherited from interface org.optaplanner.core.impl.solver.event.SolverLifecycleListener
solvingEnded, solvingStarted
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Field Detail
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childValueSelector
protected final ValueSelector<Solution_> childValueSelector
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reinitializeVariableEntityFilter
protected final SelectionFilter<Solution_,Object> reinitializeVariableEntityFilter
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scoreDirector
protected ScoreDirector<Solution_> scoreDirector
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Constructor Detail
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ReinitializeVariableValueSelector
public ReinitializeVariableValueSelector(ValueSelector<Solution_> childValueSelector)
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Method Detail
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phaseStarted
public void phaseStarted(AbstractPhaseScope<Solution_> phaseScope)
- Specified by:
phaseStartedin interfacePhaseLifecycleListener<Solution_>- Overrides:
phaseStartedin classAbstractSelector<Solution_>
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phaseEnded
public void phaseEnded(AbstractPhaseScope<Solution_> phaseScope)
- Specified by:
phaseEndedin interfacePhaseLifecycleListener<Solution_>- Overrides:
phaseEndedin classAbstractSelector<Solution_>
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getVariableDescriptor
public GenuineVariableDescriptor<Solution_> getVariableDescriptor()
- Returns:
- never null
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isCountable
public boolean isCountable()
Description copied from interface:SelectorIf false, thenSelector.isNeverEnding()is true.- Returns:
- true if all the
ValueRanges 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:SelectorIs 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 theIteratorcreated byIterable.iterator()never returns false (except when it's empty).
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getSize
public long getSize(Object entity)
Description copied from interface:ValueSelectorSimilar 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
public Iterator<Object> iterator(Object entity)
Description copied from interface:ValueSelectorSimilar toIterable.iterator(), but requires an entity.- Parameters:
entity- never null- Returns:
- never null
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endingIterator
public Iterator<Object> endingIterator(Object entity)
Description copied from interface:ValueSelectorIfSelector.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 thisValueSelectorentirely.- Parameters:
entity- never null- Returns:
- never null
- See Also:
ValueSelector.iterator(Object)
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