public class ProbabilityValueSelector extends AbstractValueSelector implements EntityIndependentValueSelector, SelectionCacheLifecycleListener
Modifier and Type | Field and Description |
---|---|
protected NavigableMap<Double,Object> |
cachedEntityMap |
protected SelectionCacheType |
cacheType |
protected EntityIndependentValueSelector |
childValueSelector |
protected SelectionProbabilityWeightFactory |
probabilityWeightFactory |
protected double |
probabilityWeightTotal |
logger, phaseLifecycleSupport, workingRandom
Constructor and Description |
---|
ProbabilityValueSelector(EntityIndependentValueSelector childValueSelector,
SelectionCacheType cacheType,
SelectionProbabilityWeightFactory probabilityWeightFactory) |
Modifier and Type | Method and Description |
---|---|
void |
constructCache(DefaultSolverScope solverScope) |
void |
disposeCache(DefaultSolverScope solverScope) |
Iterator<Object> |
endingIterator(Object entity)
If
Selector.isNeverEnding() is true, then ValueSelector.iterator(Object) will never end. |
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. |
String |
toString() |
phaseEnded, phaseStarted, solvingEnded, solvingStarted, stepEnded, stepStarted
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
phaseEnded, phaseStarted, stepEnded, stepStarted
solvingEnded, solvingStarted
forEach, spliterator
protected final EntityIndependentValueSelector childValueSelector
protected final SelectionCacheType cacheType
protected final SelectionProbabilityWeightFactory probabilityWeightFactory
protected NavigableMap<Double,Object> cachedEntityMap
protected double probabilityWeightTotal
public ProbabilityValueSelector(EntityIndependentValueSelector childValueSelector, SelectionCacheType cacheType, SelectionProbabilityWeightFactory probabilityWeightFactory)
public SelectionCacheType getCacheType()
Selector
SelectionCacheType.JUST_IN_TIME
,
even if a selector child caches.getCacheType
in interface Selector
getCacheType
in class AbstractSelector
public void constructCache(DefaultSolverScope solverScope)
constructCache
in interface SelectionCacheLifecycleListener
public void disposeCache(DefaultSolverScope solverScope)
disposeCache
in interface SelectionCacheLifecycleListener
public GenuineVariableDescriptor getVariableDescriptor()
getVariableDescriptor
in interface ValueSelector
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 nullSelector
, always >= 0
public 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 >= 0
public Iterator<Object> iterator(Object entity)
ValueSelector
Iterable.iterator()
, but requires an entity.iterator
in interface ValueSelector
entity
- never nullpublic Iterator<Object> endingIterator(Object entity)
ValueSelector
Selector.isNeverEnding()
is true, then ValueSelector.iterator(Object)
will never end.
This returns an ending Iterator
, that tries to match ValueSelector.iterator(Object)
as much as possible,
but return each distinct element only once
and therefore it might not respect the configuration of this ValueSelector
entirely.endingIterator
in interface ValueSelector
entity
- never nullValueSelector.iterator(Object)
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