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

java.lang.Object
  extended by org.drools.planner.core.heuristic.selector.AbstractSelector
      extended by org.drools.planner.core.heuristic.selector.move.AbstractMoveSelector
          extended by 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


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