org.drools.planner.core.heuristic.selector.move.decorator
Class AbstractCachingMoveSelector

java.lang.Object
  org.drools.planner.core.heuristic.selector.AbstractSelector
      org.drools.planner.core.heuristic.selector.move.AbstractMoveSelector
          org.drools.planner.core.heuristic.selector.move.decorator.AbstractCachingMoveSelector

All Implemented Interfaces:

Iterable<Move>, EventListener, SelectionCacheLifecycleListener, MoveSelector, Selector, SolverPhaseLifecycleListener, SolverLifecycleListener

Direct Known Subclasses:

CachingMoveSelector, ShufflingMoveSelector

public abstract class AbstractCachingMoveSelector
extends AbstractMoveSelector
implements SelectionCacheLifecycleListener

Field Summary

protected List<Move>	cachedMoveList
protected SelectionCacheType	cacheType
protected MoveSelector	childMoveSelector

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

logger, solverPhaseLifecycleSupport, workingRandom

Constructor Summary

AbstractCachingMoveSelector(MoveSelector childMoveSelector, SelectionCacheType cacheType)

Method Summary

void	constructCache(DefaultSolverScope solverScope)
void	disposeCache(DefaultSolverScope solverScope)
MoveSelector	getChildMoveSelector()
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.
boolean	isContinuous() If true, then Selector.isNeverEnding() is also true.

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, toString, wait, wait, wait

Methods inherited from interface org.drools.planner.core.heuristic.selector.Selector

isNeverEnding

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

Methods inherited from interface java.lang.Iterable

iterator

Field Detail

childMoveSelector

protected final MoveSelector childMoveSelector

cacheType

protected final SelectionCacheType cacheType

cachedMoveList

protected List<Move> cachedMoveList

Constructor Detail

AbstractCachingMoveSelector

public AbstractCachingMoveSelector(MoveSelector childMoveSelector,
                                   SelectionCacheType cacheType)

Method Detail

getChildMoveSelector

public MoveSelector getChildMoveSelector()

constructCache

public void constructCache(DefaultSolverScope solverScope)

Specified by:

constructCache in interface SelectionCacheLifecycleListener

disposeCache

public void disposeCache(DefaultSolverScope solverScope)

Specified by:

disposeCache in interface SelectionCacheLifecycleListener

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)

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