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java.lang.Objectorg.optaplanner.core.impl.heuristic.selector.AbstractSelector
org.optaplanner.core.impl.heuristic.selector.value.chained.DefaultSubChainSelector
public class DefaultSubChainSelector
This is the common SubChainSelector
implementation.
Field Summary | |
---|---|
protected List<SubChain> |
anchorTrailingChainList
|
protected static SelectionCacheType |
CACHE_TYPE
|
protected int |
maximumSubChainSize
|
protected int |
minimumSubChainSize
Unlike DefaultPillarSelector.minimumSubPillarSize and DefaultPillarSelector.maximumSubPillarSize ,
the sub selection here is a sequence. |
protected boolean |
randomSelection
|
protected EntityIndependentValueSelector |
valueSelector
|
Fields inherited from class org.optaplanner.core.impl.heuristic.selector.AbstractSelector |
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logger, phaseLifecycleSupport, workingRandom |
Constructor Summary | |
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DefaultSubChainSelector(EntityIndependentValueSelector valueSelector,
boolean randomSelection,
int minimumSubChainSize,
int maximumSubChainSize)
|
Method Summary | |
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protected long |
calculateSubChainSelectionSize(SubChain anchorTrailingChain)
|
void |
constructCache(DefaultSolverScope solverScope)
|
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 . |
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<SubChain> |
iterator()
|
ListIterator<SubChain> |
listIterator()
See List.listIterator() |
ListIterator<SubChain> |
listIterator(int index)
See List.listIterator() |
String |
toString()
|
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.PhaseLifecycleListener |
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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 static final SelectionCacheType CACHE_TYPE
protected final EntityIndependentValueSelector valueSelector
protected final boolean randomSelection
protected final int minimumSubChainSize
DefaultPillarSelector.minimumSubPillarSize
and DefaultPillarSelector.maximumSubPillarSize
,
the sub selection here is a sequence. For example from ABCDE,it can select BCD, but not ACD.
protected final int maximumSubChainSize
protected List<SubChain> anchorTrailingChainList
Constructor Detail |
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public DefaultSubChainSelector(EntityIndependentValueSelector valueSelector, boolean randomSelection, int minimumSubChainSize, int maximumSubChainSize)
Method Detail |
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public GenuineVariableDescriptor getVariableDescriptor()
getVariableDescriptor
in interface SubChainSelector
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 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()
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<SubChain>
Selector
, always >= 0protected long calculateSubChainSelectionSize(SubChain anchorTrailingChain)
public Iterator<SubChain> iterator()
iterator
in interface Iterable<SubChain>
public ListIterator<SubChain> listIterator()
ListIterable
List.listIterator()
listIterator
in interface ListIterable<SubChain>
List.listIterator()
.public ListIterator<SubChain> listIterator(int index)
ListIterable
List.listIterator()
listIterator
in interface ListIterable<SubChain>
index
- lower than the size of this ListIterable
, see List.listIterator(int)
.
List.listIterator(int)
.public String toString()
toString
in class Object
|
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