org.drools.planner.core.heuristic.selector.value.decorator
Class ShufflingValueSelector

java.lang.Object
  org.drools.planner.core.heuristic.selector.AbstractSelector
      org.drools.planner.core.heuristic.selector.value.AbstractValueSelector
          org.drools.planner.core.heuristic.selector.value.decorator.AbstractCachingValueSelector
              org.drools.planner.core.heuristic.selector.value.decorator.ShufflingValueSelector

All Implemented Interfaces:

Iterable<Object>, EventListener, SelectionCacheLifecycleListener, Selector, ValueSelector, SolverPhaseLifecycleListener, SolverLifecycleListener

public class ShufflingValueSelector
extends AbstractCachingValueSelector

Field Summary

Fields inherited from class org.drools.planner.core.heuristic.selector.value.decorator.AbstractCachingValueSelector

cachedValueList, cacheType, childValueSelector

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

logger, solverPhaseLifecycleSupport, workingRandom

Constructor Summary

ShufflingValueSelector(ValueSelector childValueSelector, SelectionCacheType cacheType)

Method Summary

boolean	isNeverEnding() Is true if Selector.isContinuous() is true or if this selector is in random order (for most cases).
ValueIterator	iterator()
String	toString()

Methods inherited from class org.drools.planner.core.heuristic.selector.value.decorator.AbstractCachingValueSelector

constructCache, disposeCache, getChildValueSelector, getSize, getVariableDescriptor, 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

Constructor Detail

ShufflingValueSelector

public ShufflingValueSelector(ValueSelector childValueSelector,
                              SelectionCacheType cacheType)

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 ValueIterator iterator()

toString

public String toString()

Overrides:

toString in class Object