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java.lang.Object org.optaplanner.core.impl.heuristic.selector.AbstractSelector org.optaplanner.core.impl.heuristic.selector.value.AbstractValueSelector org.optaplanner.core.impl.heuristic.selector.value.FromSolutionPropertyValueSelector
public class FromSolutionPropertyValueSelector
This is the common ValueSelector
implementation.
Field Summary | |
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protected boolean |
cachedEntityListIsDirty
|
protected Long |
cachedEntityListRevision
|
protected ValueRange<Object> |
cachedValueRange
|
protected SelectionCacheType |
minimumCacheType
|
protected boolean |
randomSelection
|
protected EntityIndependentValueRangeDescriptor |
valueRangeDescriptor
|
protected boolean |
valueRangeMightContainEntity
|
Fields inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector |
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logger, phaseLifecycleSupport, workingRandom |
Constructor Summary | |
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FromSolutionPropertyValueSelector(EntityIndependentValueRangeDescriptor valueRangeDescriptor,
SelectionCacheType minimumCacheType,
boolean randomSelection)
|
Method Summary | |
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SelectionCacheType |
getCacheType()
Unless this selector itself caches, this returns SelectionCacheType.JUST_IN_TIME ,
even if a selector child caches. |
long |
getSize()
A random JIT Selector with Selector.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 in SelectionProbabilityWeightFactory . |
long |
getSize(Object entity)
Similar to IterableSelector.getSize() , but requires an entity. |
GenuineVariableDescriptor |
getVariableDescriptor()
|
boolean |
isCountable()
If false, then Selector.isNeverEnding() is true. |
boolean |
isNeverEnding()
Is true if Selector.isCountable() is false
or if this selector is in random order (for most cases). |
Iterator<Object> |
iterator()
|
Iterator<Object> |
iterator(Object entity)
Similar to Iterable.iterator() , but requires an entity. |
void |
phaseEnded(AbstractPhaseScope phaseScope)
|
void |
phaseStarted(AbstractPhaseScope phaseScope)
|
void |
stepStarted(AbstractStepScope stepScope)
|
String |
toString()
|
Methods inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector |
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solvingEnded, solvingStarted, stepEnded |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface org.optaplanner.core.impl.phase.event.PhaseLifecycleListener |
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stepEnded |
Methods inherited from interface org.optaplanner.core.impl.solver.event.SolverLifecycleListener |
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solvingEnded, solvingStarted |
Field Detail |
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protected final EntityIndependentValueRangeDescriptor valueRangeDescriptor
protected final SelectionCacheType minimumCacheType
protected final boolean randomSelection
protected final boolean valueRangeMightContainEntity
protected ValueRange<Object> cachedValueRange
protected Long cachedEntityListRevision
protected boolean cachedEntityListIsDirty
Constructor Detail |
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public FromSolutionPropertyValueSelector(EntityIndependentValueRangeDescriptor valueRangeDescriptor, SelectionCacheType minimumCacheType, boolean randomSelection)
Method Detail |
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public GenuineVariableDescriptor getVariableDescriptor()
getVariableDescriptor
in interface ValueSelector
public SelectionCacheType getCacheType()
Selector
SelectionCacheType.JUST_IN_TIME
,
even if a selector child caches.
getCacheType
in interface Selector
getCacheType
in class AbstractSelector
public void phaseStarted(AbstractPhaseScope phaseScope)
phaseStarted
in interface PhaseLifecycleListener
phaseStarted
in class AbstractSelector
public void stepStarted(AbstractStepScope stepScope)
stepStarted
in interface PhaseLifecycleListener
stepStarted
in class AbstractSelector
public void phaseEnded(AbstractPhaseScope phaseScope)
phaseEnded
in interface PhaseLifecycleListener
phaseEnded
in class AbstractSelector
public boolean isCountable()
Selector
Selector.isNeverEnding()
is true.
isCountable
in interface Selector
ValueRange
s are countable
(for example a double value range between 1.2 and 1.4 is not countable)public boolean isNeverEnding()
Selector
Selector.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).
isNeverEnding
in interface Selector
Iterator.hasNext()
of the Iterator
created by Iterable.iterator()
never returns false (except when it's empty).public long getSize(Object entity)
ValueSelector
IterableSelector.getSize()
, but requires an entity.
getSize
in interface ValueSelector
entity
- never null
Selector
, always >= 0public long getSize()
IterableSelector
Selector
with Selector.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 in SelectionProbabilityWeightFactory
.
getSize
in interface IterableSelector<Object>
Selector
, always >= 0public Iterator<Object> iterator(Object entity)
ValueSelector
Iterable.iterator()
, but requires an entity.
iterator
in interface ValueSelector
entity
- never null
public Iterator<Object> iterator()
iterator
in interface Iterable<Object>
public String toString()
toString
in class Object
|
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