org.drools.planner.core.heuristic.selector.entity.decorator
Class CachingEntitySelector

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.AbstractCachingEntitySelector
              org.drools.planner.core.heuristic.selector.entity.decorator.CachingEntitySelector

All Implemented Interfaces:

Iterable<Object>, EventListener, ListIterable<Object>, SelectionCacheLifecycleListener, EntitySelector, Selector, SolverPhaseLifecycleListener, SolverLifecycleListener

Direct Known Subclasses:

DecreasingDifficultyEntitySelector

public class CachingEntitySelector
extends AbstractCachingEntitySelector

A EntitySelector that caches the result of its child EntitySelector.

Keep this code in sync with CachingValueSelector and CachingMoveSelector.

Field Summary

protected boolean

randomSelection

Fields inherited from class org.drools.planner.core.heuristic.selector.entity.decorator.AbstractCachingEntitySelector

cachedEntityList, cacheType, childEntitySelector

Fields inherited from class org.drools.planner.core.heuristic.selector.AbstractSelector

logger, solverPhaseLifecycleSupport, workingRandom

Constructor Summary

CachingEntitySelector(EntitySelector childEntitySelector, SelectionCacheType cacheType, boolean randomSelection)

Method Summary

boolean	isNeverEnding() Is true if Selector.isContinuous() is true or if this selector is in random order (for most cases).
Iterator<Object>	iterator()
ListIterator<Object>	listIterator() See List.listIterator()
ListIterator<Object>	listIterator(int index) See List.listIterator()
String	toString()

Methods inherited from class org.drools.planner.core.heuristic.selector.entity.decorator.AbstractCachingEntitySelector

constructCache, disposeCache, getChildEntitySelector, getEntityDescriptor, getSize, isContinuous

Methods inherited from class org.drools.planner.core.heuristic.selector.AbstractSelector

phaseEnded, phaseStarted, solvingEnded, solvingStarted, stepEnded, stepStarted

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.drools.planner.core.phase.event.SolverPhaseLifecycleListener

phaseEnded, phaseStarted, stepEnded, stepStarted

Methods inherited from interface org.drools.planner.core.solver.event.SolverLifecycleListener

solvingEnded, solvingStarted

Field Detail

randomSelection

protected final boolean randomSelection

Constructor Detail

CachingEntitySelector

public CachingEntitySelector(EntitySelector childEntitySelector,
                             SelectionCacheType cacheType,
                             boolean randomSelection)

Method Detail

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).

Returns:

true if the Iterator.hasNext() of the Iterator created by Iterable.iterator() never returns false.

iterator

public Iterator<Object> iterator()

listIterator

public ListIterator<Object> listIterator()

Description copied from interface: ListIterable

See List.listIterator()

Returns:

never null, see List.listIterator().

listIterator

public ListIterator<Object> listIterator(int index)

Description copied from interface: ListIterable

See List.listIterator()

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