org.drools.planner.core.heuristic.selector.entity.decorator
Class ProbabilityEntitySelector
java.lang.Object
org.drools.planner.core.heuristic.selector.AbstractSelector
org.drools.planner.core.heuristic.selector.entity.AbstractEntitySelector
org.drools.planner.core.heuristic.selector.entity.decorator.ProbabilityEntitySelector
- All Implemented Interfaces:
- Iterable<Object>, EventListener, ListIterable<Object>, SelectionCacheLifecycleListener, EntitySelector, Selector, SolverPhaseLifecycleListener, SolverLifecycleListener
public class ProbabilityEntitySelector
- extends AbstractEntitySelector
- implements SelectionCacheLifecycleListener
childEntitySelector
protected final EntitySelector childEntitySelector
cacheType
protected final SelectionCacheType cacheType
entityProbabilityWeightFactory
protected final SelectionProbabilityWeightFactory entityProbabilityWeightFactory
cachedEntityMap
protected NavigableMap<Double,Object> cachedEntityMap
probabilityWeightTotal
protected double probabilityWeightTotal
ProbabilityEntitySelector
public ProbabilityEntitySelector(EntitySelector childEntitySelector,
SelectionCacheType cacheType,
SelectionProbabilityWeightFactory entityProbabilityWeightFactory)
constructCache
public void constructCache(DefaultSolverScope solverScope)
- Specified by:
constructCache
in interface SelectionCacheLifecycleListener
disposeCache
public void disposeCache(DefaultSolverScope solverScope)
- Specified by:
disposeCache
in interface SelectionCacheLifecycleListener
getEntityDescriptor
public PlanningEntityDescriptor getEntityDescriptor()
- Specified by:
getEntityDescriptor
in interface EntitySelector
- Returns:
- never null
isContinuous
public boolean isContinuous()
- Description copied from interface:
Selector
- If true, then
Selector.isNeverEnding()
is also true.
- Specified by:
isContinuous
in interface Selector
- Returns:
- true if any of the value ranges are continuous (as in for example every double value between 1.2 and 1.4)
isNeverEnding
public boolean isNeverEnding()
- Description copied from interface:
Selector
- Is true if
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).
- Specified by:
isNeverEnding
in interface Selector
- Returns:
- true if the
Iterator.hasNext()
of the Iterator
created by Iterable.iterator()
never returns false.
getSize
public long getSize()
- Description copied from interface:
Selector
- 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
.
- Specified by:
getSize
in interface Selector
- Returns:
- the approximate number of elements generated by this
Selector
, always >= 0
iterator
public Iterator<Object> iterator()
- Specified by:
iterator
in interface Iterable<Object>
listIterator
public ListIterator<Object> listIterator()
- Description copied from interface:
ListIterable
- See
List.listIterator()
- Specified by:
listIterator
in interface ListIterable<Object>
- Returns:
- never null, see
List.listIterator()
.
listIterator
public ListIterator<Object> listIterator(int index)
- Description copied from interface:
ListIterable
- See
List.listIterator()
- Specified by:
listIterator
in interface ListIterable<Object>
- Parameters:
index
- lower than the size of this ListIterable
, see List.listIterator(int)
.
- Returns:
- never null, see
List.listIterator(int)
.
toString
public String toString()
- Overrides:
toString
in class Object
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