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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 List<Object> |
cachedValueList
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protected SelectionCacheType |
cacheType
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protected boolean |
randomSelection
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protected PlanningVariableDescriptor |
variableDescriptor
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Fields inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector |
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logger, solverPhaseLifecycleSupport, workingRandom |
Constructor Summary | |
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FromSolutionPropertyValueSelector(PlanningVariableDescriptor variableDescriptor,
SelectionCacheType cacheType,
boolean randomSelection)
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Method Summary | |
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void |
constructCache(DefaultSolverScope solverScope)
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void |
disposeCache(DefaultSolverScope solverScope)
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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. |
PlanningVariableDescriptor |
getVariableDescriptor()
|
boolean |
isContinuous()
If true, then Selector.isNeverEnding() is also true. |
boolean |
isNeverEnding()
Is true if Selector.isContinuous() is true
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()
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Methods inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector |
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phaseEnded, phaseStarted, solvingEnded, solvingStarted, stepEnded, stepStarted |
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.SolverPhaseLifecycleListener |
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phaseEnded, phaseStarted, stepEnded, stepStarted |
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 PlanningVariableDescriptor variableDescriptor
protected final SelectionCacheType cacheType
protected final boolean randomSelection
protected List<Object> cachedValueList
Constructor Detail |
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public FromSolutionPropertyValueSelector(PlanningVariableDescriptor variableDescriptor, SelectionCacheType cacheType, boolean randomSelection)
Method Detail |
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public PlanningVariableDescriptor 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 constructCache(DefaultSolverScope solverScope)
constructCache
in interface SelectionCacheLifecycleListener
public void disposeCache(DefaultSolverScope solverScope)
disposeCache
in interface SelectionCacheLifecycleListener
public boolean isContinuous()
Selector
Selector.isNeverEnding()
is also true.
isContinuous
in interface Selector
public boolean isNeverEnding()
Selector
Selector.isContinuous()
is true
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.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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