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## org.optaplanner.core.impl.localsearch.decider.acceptor.tabu
Class AbstractTabuAcceptor

    java.lang.Object
      org.optaplanner.core.impl.solver.event.SolverLifecycleListenerAdapter
          org.optaplanner.core.impl.localsearch.event.LocalSearchSolverPhaseLifecycleListenerAdapter
              org.optaplanner.core.impl.localsearch.decider.acceptor.AbstractAcceptor
                  org.optaplanner.core.impl.localsearch.decider.acceptor.tabu.AbstractTabuAcceptor

All Implemented Interfaces:
  EventListener, Acceptor, LocalSearchSolverPhaseLifecycleListener, SolverLifecycleListener

Direct Known Subclasses:
  EntityTabuAcceptor, MoveTabuAcceptor, SolutionTabuAcceptor, ValueTabuAcceptor

    public abstract class AbstractTabuAcceptor

extends AbstractAcceptor

Abstract superclass for all Tabu Acceptors.

See Also:
  `Acceptor`

Field Summary
`protected boolean` | `aspirationEnabled`
`protected boolean` | `assertTabuHashCodeCorrectness`
`protected TabuSizeStrategy` | `fadingTabuSizeStrategy`
`protected List<Object>` | `tabuSequenceList`
`protected TabuSizeStrategy` | `tabuSizeStrategy`
`protected Map<Object,Integer>` | `tabuToStepIndexMap`
`protected int` | `workingFadingTabuSize`
`protected int` | `workingTabuSize`

Fields inherited from class org.optaplanner.core.impl.localsearch.decider.acceptor.AbstractAcceptor
`logger`

Constructor Summary
`AbstractTabuAcceptor()`

Method Summary
`protected void` | `adjustTabuList(int tabuStepIndex, Collection<? extends Object> tabus)`
`protected double` | `calculateFadingTabuAcceptChance(int fadingTabuStepCount)`
`protected abstract Collection<? extends Object>` | `findNewTabu(LocalSearchStepScope stepScope)`
`protected abstract Collection<? extends Object>` | `findTabu(LocalSearchMoveScope moveScope)`
`boolean` | `isAccepted(LocalSearchMoveScope moveScope)`
`void` | `phaseEnded(LocalSearchSolverPhaseScope phaseScope)`
`void` | `phaseStarted(LocalSearchSolverPhaseScope phaseScope)`
`void` | `setAspirationEnabled(boolean aspirationEnabled)`
`void` | `setAssertTabuHashCodeCorrectness(boolean assertTabuHashCodeCorrectness)`
`void` | `setFadingTabuSizeStrategy(TabuSizeStrategy fadingTabuSizeStrategy)`
`void` | `setTabuSizeStrategy(TabuSizeStrategy tabuSizeStrategy)`
`void` | `stepEnded(LocalSearchStepScope stepScope)`

Methods inherited from class org.optaplanner.core.impl.localsearch.event.LocalSearchSolverPhaseLifecycleListenerAdapter
`stepStarted`

Methods inherited from class org.optaplanner.core.impl.solver.event.SolverLifecycleListenerAdapter
`solvingEnded, solvingStarted`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface org.optaplanner.core.impl.localsearch.event.LocalSearchSolverPhaseLifecycleListener
`stepStarted`

Methods inherited from interface org.optaplanner.core.impl.solver.event.SolverLifecycleListener
`solvingEnded, solvingStarted`

Field Detail

### tabuSizeStrategy

    protected TabuSizeStrategy tabuSizeStrategy

### fadingTabuSizeStrategy

    protected TabuSizeStrategy fadingTabuSizeStrategy

### aspirationEnabled

    protected boolean aspirationEnabled

### assertTabuHashCodeCorrectness

    protected boolean assertTabuHashCodeCorrectness

### tabuToStepIndexMap

    protected Map<Object,Integer> tabuToStepIndexMap

### tabuSequenceList

    protected List<Object> tabuSequenceList

### workingTabuSize

    protected int workingTabuSize

### workingFadingTabuSize

    protected int workingFadingTabuSize

Constructor Detail

### AbstractTabuAcceptor

    public AbstractTabuAcceptor()

Method Detail

### setTabuSizeStrategy

    public void setTabuSizeStrategy(TabuSizeStrategy tabuSizeStrategy)

### setFadingTabuSizeStrategy

    public void setFadingTabuSizeStrategy(TabuSizeStrategy fadingTabuSizeStrategy)

### setAspirationEnabled

    public void setAspirationEnabled(boolean aspirationEnabled)

### setAssertTabuHashCodeCorrectness

    public void setAssertTabuHashCodeCorrectness(boolean assertTabuHashCodeCorrectness)

### phaseStarted

    public void phaseStarted(LocalSearchSolverPhaseScope phaseScope)

  Specified by:
    `phaseStarted` in interface `LocalSearchSolverPhaseLifecycleListener`
  Overrides:
    `phaseStarted` in class `LocalSearchSolverPhaseLifecycleListenerAdapter`

### phaseEnded

    public void phaseEnded(LocalSearchSolverPhaseScope phaseScope)

  Specified by:
    `phaseEnded` in interface `LocalSearchSolverPhaseLifecycleListener`
  Overrides:
    `phaseEnded` in class `LocalSearchSolverPhaseLifecycleListenerAdapter`

### stepEnded

    public void stepEnded(LocalSearchStepScope stepScope)

  Specified by:
    `stepEnded` in interface `LocalSearchSolverPhaseLifecycleListener`
  Overrides:
    `stepEnded` in class `LocalSearchSolverPhaseLifecycleListenerAdapter`

### adjustTabuList

    protected void adjustTabuList(int tabuStepIndex,
                                  Collection<? extends Object> tabus)

### isAccepted

    public boolean isAccepted(LocalSearchMoveScope moveScope)

  Parameters:
    `moveScope` - not null
  Returns:
    true if accepted

### calculateFadingTabuAcceptChance

    protected double calculateFadingTabuAcceptChance(int fadingTabuStepCount)

  Parameters:
    `fadingTabuStepCount` - 0 < fadingTabuStepCount <= fadingTabuSize
  Returns:
    0.0 < acceptChance < 1.0

### findTabu

    protected abstract Collection<? extends Object> findTabu(LocalSearchMoveScope moveScope)

### findNewTabu

    protected abstract Collection<? extends Object> findNewTabu(LocalSearchStepScope stepScope)

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