org.optaplanner.core.impl.score.director

## Class AbstractScoreDirector<Solution_,Factory_ extends AbstractScoreDirectorFactory<Solution_>>

- java.lang.Object
- - org.optaplanner.core.impl.score.director.AbstractScoreDirector<Solution_,Factory_>

- All Implemented Interfaces:
    AutoCloseable, Cloneable, InnerScoreDirector<Solution_>, ScoreDirector<Solution_>
  Direct Known Subclasses:
    ConstraintStreamScoreDirector, DroolsScoreDirector, EasyScoreDirector, IncrementalScoreDirector

      public abstract class AbstractScoreDirector<Solution_,Factory_ extends AbstractScoreDirectorFactory<Solution_>>
      extends Object
      implements InnerScoreDirector<Solution_>, Cloneable

  Abstract superclass for `ScoreDirector`.

  Implementation note: Extending classes should follow these guidelines:

  - before* method: last statement should be a call to the super method
  - after* method: first statement should be a call to the super method
  See Also:
    `ScoreDirector`

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected boolean` | `allChangesWillBeUndoneBeforeStepEnds`
    `protected long` | `calculationCount`
    `protected boolean` | `constraintMatchEnabledPreference`
    `protected org.slf4j.Logger` | `logger`
    `protected boolean` | `lookUpEnabled`
    `protected LookUpManager` | `lookUpManager`
    `protected Factory_` | `scoreDirectorFactory`
    `protected VariableListenerSupport<Solution_>` | `variableListenerSupport`
    `protected long` | `workingEntityListRevision`
    `protected Integer` | `workingInitScore`
    `protected Solution_` | `workingSolution`

  - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `AbstractScoreDirector(Factory_ scoreDirectorFactory, boolean lookUpEnabled, boolean constraintMatchEnabledPreference)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `afterEntityAdded(EntityDescriptor<Solution_> entityDescriptor, Object entity)`
    `void` | `afterEntityAdded(Object entity)`
    `void` | `afterEntityRemoved(EntityDescriptor<Solution_> entityDescriptor, Object entity)`
    `void` | `afterEntityRemoved(Object entity)`
    `void` | `afterProblemFactAdded(Object problemFact)`
    `void` | `afterProblemFactRemoved(Object problemFact)`
    `void` | `afterProblemPropertyChanged(Object problemFactOrEntity)`
    `void` | `afterVariableChanged(Object entity, String variableName)`
    `void` | `afterVariableChanged(VariableDescriptor variableDescriptor, Object entity)`
    `void` | `assertExpectedUndoMoveScore(Move move, Score beforeMoveScore)` Asserts that if the `Score` is calculated for the current `working solution` in the current `ScoreDirector` (with incremental calculation residue), it is equal to the parameter `beforeMoveScore`.
    `void` | `assertExpectedWorkingScore(Score expectedWorkingScore, Object completedAction)` Asserts that if the `Score` is calculated for the current `working solution` in the current `ScoreDirector` (with possibly incremental calculation residue), it is equal to the parameter `expectedWorkingScore`.
    `void` | `assertPredictedScoreFromScratch(Score workingScore, Object completedAction)` Asserts that if the `Score` is calculated for the current `working solution` in a fresh `ScoreDirector` (with no incremental calculation residue), it is equal to the parameter `predictedScore`.
    `void` | `assertShadowVariablesAreNotStale(Score expectedWorkingScore, Object completedAction)` Asserts that if all `VariableListener`s are forcibly triggered, and therefore all shadow variables are updated if needed, that none of the shadow variables of the `working solution` change, Then also asserts that the `Score` calculated for the `working solution` afterwards is equal to the parameter `expectedWorkingScore`.
    `void` | `assertWorkingScoreFromScratch(Score workingScore, Object completedAction)` Asserts that if the `Score` is calculated for the current `working solution` in a fresh `ScoreDirector` (with no incremental calculation residue), it is equal to the parameter `workingScore`.
    `void` | `beforeEntityAdded(EntityDescriptor<Solution_> entityDescriptor, Object entity)`
    `void` | `beforeEntityAdded(Object entity)`
    `void` | `beforeEntityRemoved(EntityDescriptor<Solution_> entityDescriptor, Object entity)`
    `void` | `beforeEntityRemoved(Object entity)`
    `void` | `beforeProblemFactAdded(Object problemFact)`
    `void` | `beforeProblemFactRemoved(Object problemFact)`
    `void` | `beforeProblemPropertyChanged(Object problemFactOrEntity)`
    `void` | `beforeVariableChanged(Object entity, String variableName)`
    `void` | `beforeVariableChanged(VariableDescriptor variableDescriptor, Object entity)`
    `protected String` | `buildScoreCorruptionAnalysis(ScoreDirector<Solution_> uncorruptedScoreDirector, boolean predicted)`
    `protected String` | `buildShadowVariableAnalysis(boolean predicted)`
    `void` | `changeVariableFacade(VariableDescriptor variableDescriptor, Object entity, Object newValue)`
    `AbstractScoreDirector<Solution_,Factory_>` | `clone()` Clones this `ScoreDirector` and its `working solution`.
    `Solution_` | `cloneSolution(Solution_ originalSolution)` Returns a planning clone of the solution, which is not a shallow clone nor a deep clone nor a partition clone.
    `Solution_` | `cloneWorkingSolution()` Returns a planning clone of the solution, which is not a shallow clone nor a deep clone nor a partition clone.
    `void` | `close()` Needs to be called after use because some implementations need to clean up their resources.
    `InnerScoreDirector<Solution_>` | `createChildThreadScoreDirector(ChildThreadType childThreadType)`
    `protected String` | `createShadowVariablesViolationMessage()`
    `Score` | `doAndProcessMove(Move<Solution_> move, boolean assertMoveScoreFromScratch)`
    `void` | `doAndProcessMove(Move<Solution_> move, boolean assertMoveScoreFromScratch, Consumer<Score> moveProcessor)`
    `String` | `explainScore()` Returns a diagnostic text that explains the `Score` through the `ConstraintMatch` API to identify which constraints or planning entities cause that score quality.
    `long` | `getCalculationCount()`
    `ScoreDefinition` | `getScoreDefinition()`
    `Factory_` | `getScoreDirectorFactory()`
    `SolutionDescriptor<Solution_>` | `getSolutionDescriptor()`
    `SupplyManager` | `getSupplyManager()`
    `int` | `getWorkingEntityCount()`
    `List<Object>` | `getWorkingEntityList()`
    `long` | `getWorkingEntityListRevision()`
    `Solution_` | `getWorkingSolution()` The `PlanningSolution` that is used to calculate the `Score`.
    `int` | `getWorkingValueCount()`
    `boolean` | `isAllChangesWillBeUndoneBeforeStepEnds()`
    `boolean` | `isConstraintMatchEnabledPreference()`
    `boolean` | `isLookUpEnabled()`
    `boolean` | `isWorkingEntityListDirty(long expectedWorkingEntityListRevision)`
    `<E> E` | `lookUpWorkingObject(E externalObject)` Translates an entity or fact instance (often from another `Thread` or JVM) to this `ScoreDirector`'s internal working instance.
    `<E> E` | `lookUpWorkingObjectOrReturnNull(E externalObject)` As defined by `ScoreDirector.lookUpWorkingObject(Object)`, but doesn't fail fast if no workingObject was ever added for the externalObject.
    `void` | `overwriteConstraintMatchEnabledPreference(boolean constraintMatchEnabledPreference)`
    `void` | `resetCalculationCount()`
    `void` | `setAllChangesWillBeUndoneBeforeStepEnds(boolean allChangesWillBeUndoneBeforeStepEnds)` Do not waste performance by propagating changes to step (or higher) mechanisms.
    `protected void` | `setCalculatedScore(Score score)`
    `protected void` | `setWorkingEntityListDirty()`
    `void` | `setWorkingSolution(Solution_ workingSolution)` The `working solution` must never be the same instance as the `best solution`, it should be a (un)changed clone.
    `String` | `toString()`
    `void` | `triggerVariableListeners()`

    - ### Methods inherited from class java.lang.Object

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

    - ### Methods inherited from interface org.optaplanner.core.impl.score.director.ScoreDirector

      `calculateScore, dispose, getConstraintMatchTotalMap, getConstraintMatchTotals, getIndictmentMap, isConstraintMatchEnabled`

- - ### Field Detail

    - #### logger

          protected final transient org.slf4j.Logger logger

    - #### scoreDirectorFactory

          protected final Factory_ extends AbstractScoreDirectorFactory<Solution_> scoreDirectorFactory

    - #### lookUpEnabled

          protected final boolean lookUpEnabled

    - #### lookUpManager

          protected final LookUpManager lookUpManager

    - #### constraintMatchEnabledPreference

          protected boolean constraintMatchEnabledPreference

    - #### variableListenerSupport

          protected final VariableListenerSupport<Solution_> variableListenerSupport

    - #### workingSolution

          protected Solution_ workingSolution

    - #### workingEntityListRevision

          protected long workingEntityListRevision

    - #### workingInitScore

          protected Integer workingInitScore

    - #### allChangesWillBeUndoneBeforeStepEnds

          protected boolean allChangesWillBeUndoneBeforeStepEnds

    - #### calculationCount

          protected long calculationCount

  - ### Constructor Detail

    - #### AbstractScoreDirector

          protected AbstractScoreDirector(Factory_ scoreDirectorFactory,
                                          boolean lookUpEnabled,
                                          boolean constraintMatchEnabledPreference)

  - ### Method Detail

    - #### getScoreDirectorFactory

          public Factory_ getScoreDirectorFactory()

      Specified by:
        `getScoreDirectorFactory` in interface `InnerScoreDirector<Solution_>`
      Returns:
        never null

    - #### getSolutionDescriptor

          public SolutionDescriptor<Solution_> getSolutionDescriptor()

      Specified by:
        `getSolutionDescriptor` in interface `InnerScoreDirector<Solution_>`
      Returns:
        never null

    - #### getScoreDefinition

          public ScoreDefinition getScoreDefinition()

      Specified by:
        `getScoreDefinition` in interface `InnerScoreDirector<Solution_>`
      Returns:
        never null

    - #### isLookUpEnabled

          public boolean isLookUpEnabled()

    - #### isConstraintMatchEnabledPreference

          public boolean isConstraintMatchEnabledPreference()

    - #### overwriteConstraintMatchEnabledPreference

          public void overwriteConstraintMatchEnabledPreference(boolean constraintMatchEnabledPreference)

      Specified by:
        `overwriteConstraintMatchEnabledPreference` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `constraintMatchEnabledPreference` - false if a `ScoreDirector` implementation should not do `ConstraintMatch` tracking even if it supports it.

    - #### getWorkingSolution

          public Solution_ getWorkingSolution()

      Description copied from interface: `ScoreDirector`
      The `PlanningSolution` that is used to calculate the `Score`.

      Because a `Score` is best calculated incrementally (by deltas), the `ScoreDirector` needs to be notified when its `working solution` changes.

      If the `working solution` has been changed since `ScoreDirector.calculateScore()` was called, its `Score` won't be correct.

      Specified by:
        `getWorkingSolution` in interface `ScoreDirector<Solution_>`
      Returns:
        never null

    - #### getWorkingEntityListRevision

          public long getWorkingEntityListRevision()

      Specified by:
        `getWorkingEntityListRevision` in interface `InnerScoreDirector<Solution_>`
      Returns:
        used to check `InnerScoreDirector.isWorkingEntityListDirty(long)` later on

    - #### isAllChangesWillBeUndoneBeforeStepEnds

          public boolean isAllChangesWillBeUndoneBeforeStepEnds()

    - #### setAllChangesWillBeUndoneBeforeStepEnds

          public void setAllChangesWillBeUndoneBeforeStepEnds(boolean allChangesWillBeUndoneBeforeStepEnds)

      Description copied from interface: `InnerScoreDirector`
      Do not waste performance by propagating changes to step (or higher) mechanisms.
      Specified by:
        `setAllChangesWillBeUndoneBeforeStepEnds` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `allChangesWillBeUndoneBeforeStepEnds` - true if all changes will be undone

    - #### getCalculationCount

          public long getCalculationCount()

      Specified by:
        `getCalculationCount` in interface `InnerScoreDirector<Solution_>`
      Returns:
        at least 0L

    - #### resetCalculationCount

          public void resetCalculationCount()

      Specified by:
        `resetCalculationCount` in interface `InnerScoreDirector<Solution_>`

    - #### getSupplyManager

          public SupplyManager getSupplyManager()

      Specified by:
        `getSupplyManager` in interface `InnerScoreDirector<Solution_>`
      Returns:
        never null

    - #### setWorkingSolution

          public void setWorkingSolution(Solution_ workingSolution)

      Description copied from interface: `ScoreDirector`
      The `working solution` must never be the same instance as the `best solution`, it should be a (un)changed clone.

      Only call this method on a separate `ScoreDirector` instance, built by `SolverFactory.getScoreDirectorFactory()`, not on the one used inside the `Solver` itself.

      Specified by:
        `setWorkingSolution` in interface `ScoreDirector<Solution_>`
      Parameters:
        `workingSolution` - never null

    - #### doAndProcessMove

          public Score doAndProcessMove(Move<Solution_> move,
                                        boolean assertMoveScoreFromScratch)

      Specified by:
        `doAndProcessMove` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `move` - never null
        `assertMoveScoreFromScratch` - true will hurt performance
      Returns:
        never null

    - #### doAndProcessMove

          public void doAndProcessMove(Move<Solution_> move,
                                       boolean assertMoveScoreFromScratch,
                                       Consumer<Score> moveProcessor)

      Specified by:
        `doAndProcessMove` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `move` - never null
        `assertMoveScoreFromScratch` - true will hurt performance
        `moveProcessor` - never null, use this to store the score as well as call the acceptor and forager

    - #### isWorkingEntityListDirty

          public boolean isWorkingEntityListDirty(long expectedWorkingEntityListRevision)

      Specified by:
        `isWorkingEntityListDirty` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `expectedWorkingEntityListRevision` - an
      Returns:
        true if the entityList might have a different set of instances now

    - #### setWorkingEntityListDirty

          protected void setWorkingEntityListDirty()

    - #### cloneWorkingSolution

          public Solution_ cloneWorkingSolution()

      Description copied from interface: `InnerScoreDirector`
      Returns a planning clone of the solution, which is not a shallow clone nor a deep clone nor a partition clone.
      Specified by:
        `cloneWorkingSolution` in interface `InnerScoreDirector<Solution_>`
      Returns:
        never null, planning clone

    - #### cloneSolution

          public Solution_ cloneSolution(Solution_ originalSolution)

      Description copied from interface: `InnerScoreDirector`
      Returns a planning clone of the solution, which is not a shallow clone nor a deep clone nor a partition clone.
      Specified by:
        `cloneSolution` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `originalSolution` - never null
      Returns:
        never null, planning clone

    - #### getWorkingEntityCount

          public int getWorkingEntityCount()

      Specified by:
        `getWorkingEntityCount` in interface `InnerScoreDirector<Solution_>`
      Returns:
        `>= 0`

    - #### getWorkingEntityList

          public List<Object> getWorkingEntityList()

      Specified by:
        `getWorkingEntityList` in interface `InnerScoreDirector<Solution_>`
      Returns:
        never null: an empty list if there are none

    - #### getWorkingValueCount

          public int getWorkingValueCount()

      Specified by:
        `getWorkingValueCount` in interface `InnerScoreDirector<Solution_>`
      Returns:
        `>= 0`

    - #### triggerVariableListeners

          public void triggerVariableListeners()

      Specified by:
        `triggerVariableListeners` in interface `ScoreDirector<Solution_>`

    - #### setCalculatedScore

          protected void setCalculatedScore(Score score)

    - #### explainScore

          public String explainScore()

      Description copied from interface: `ScoreDirector`
      Returns a diagnostic text that explains the `Score` through the `ConstraintMatch` API to identify which constraints or planning entities cause that score quality. In case of an `infeasible` solution, this can help diagnose the cause of that.

      Do not parse this string. Instead, to provide this information in a UI or a service, use `ScoreDirector.getConstraintMatchTotalMap()` and `ScoreDirector.getIndictmentMap()` and convert those into a domain specific API.

      This automatically calls `ScoreDirector.calculateScore()` first.

      Specified by:
        `explainScore` in interface `ScoreDirector<Solution_>`
      Returns:
        never null

    - #### clone

          public AbstractScoreDirector<Solution_,Factory_> clone()

      Description copied from interface: `InnerScoreDirector`
      Clones this `ScoreDirector` and its `working solution`. Use `ScoreDirector.getWorkingSolution()` to retrieve the `working solution` of that clone.

      This is heavy method, because it usually breaks incremental score calculation. Use it sparingly. Therefore it's best to clone lazily by delaying the clone call as long as possible.

      Specified by:
        `clone` in interface `InnerScoreDirector<Solution_>`
      Overrides:
        `clone` in class `Object`
      Returns:
        never null

    - #### createChildThreadScoreDirector

          public InnerScoreDirector<Solution_> createChildThreadScoreDirector(ChildThreadType childThreadType)

      Specified by:
        `createChildThreadScoreDirector` in interface `InnerScoreDirector<Solution_>`

    - #### close

          public void close()

      Description copied from interface: `ScoreDirector`
      Needs to be called after use because some implementations need to clean up their resources.
      Specified by:
        `close` in interface `AutoCloseable`
      Specified by:
        `close` in interface `ScoreDirector<Solution_>`

    - #### beforeEntityAdded

          public final void beforeEntityAdded(Object entity)

      Specified by:
        `beforeEntityAdded` in interface `ScoreDirector<Solution_>`

    - #### afterEntityAdded

          public final void afterEntityAdded(Object entity)

      Specified by:
        `afterEntityAdded` in interface `ScoreDirector<Solution_>`

    - #### beforeVariableChanged

          public final void beforeVariableChanged(Object entity,
                                                  String variableName)

      Specified by:
        `beforeVariableChanged` in interface `ScoreDirector<Solution_>`

    - #### afterVariableChanged

          public final void afterVariableChanged(Object entity,
                                                 String variableName)

      Specified by:
        `afterVariableChanged` in interface `ScoreDirector<Solution_>`

    - #### beforeEntityRemoved

          public final void beforeEntityRemoved(Object entity)

      Specified by:
        `beforeEntityRemoved` in interface `ScoreDirector<Solution_>`

    - #### afterEntityRemoved

          public final void afterEntityRemoved(Object entity)

      Specified by:
        `afterEntityRemoved` in interface `ScoreDirector<Solution_>`

    - #### beforeEntityAdded

          public void beforeEntityAdded(EntityDescriptor<Solution_> entityDescriptor,
                                        Object entity)

    - #### afterEntityAdded

          public void afterEntityAdded(EntityDescriptor<Solution_> entityDescriptor,
                                       Object entity)

    - #### beforeVariableChanged

          public void beforeVariableChanged(VariableDescriptor variableDescriptor,
                                            Object entity)

      Specified by:
        `beforeVariableChanged` in interface `ScoreDirector<Solution_>`

    - #### afterVariableChanged

          public void afterVariableChanged(VariableDescriptor variableDescriptor,
                                           Object entity)

      Specified by:
        `afterVariableChanged` in interface `ScoreDirector<Solution_>`

    - #### changeVariableFacade

          public void changeVariableFacade(VariableDescriptor variableDescriptor,
                                           Object entity,
                                           Object newValue)

      Specified by:
        `changeVariableFacade` in interface `ScoreDirector<Solution_>`

    - #### beforeEntityRemoved

          public void beforeEntityRemoved(EntityDescriptor<Solution_> entityDescriptor,
                                          Object entity)

    - #### afterEntityRemoved

          public void afterEntityRemoved(EntityDescriptor<Solution_> entityDescriptor,
                                         Object entity)

    - #### beforeProblemFactAdded

          public void beforeProblemFactAdded(Object problemFact)

      Specified by:
        `beforeProblemFactAdded` in interface `ScoreDirector<Solution_>`

    - #### afterProblemFactAdded

          public void afterProblemFactAdded(Object problemFact)

      Specified by:
        `afterProblemFactAdded` in interface `ScoreDirector<Solution_>`

    - #### beforeProblemPropertyChanged

          public void beforeProblemPropertyChanged(Object problemFactOrEntity)

      Specified by:
        `beforeProblemPropertyChanged` in interface `ScoreDirector<Solution_>`

    - #### afterProblemPropertyChanged

          public void afterProblemPropertyChanged(Object problemFactOrEntity)

      Specified by:
        `afterProblemPropertyChanged` in interface `ScoreDirector<Solution_>`

    - #### beforeProblemFactRemoved

          public void beforeProblemFactRemoved(Object problemFact)

      Specified by:
        `beforeProblemFactRemoved` in interface `ScoreDirector<Solution_>`

    - #### afterProblemFactRemoved

          public void afterProblemFactRemoved(Object problemFact)

      Specified by:
        `afterProblemFactRemoved` in interface `ScoreDirector<Solution_>`

    - #### lookUpWorkingObject

          public <E> E lookUpWorkingObject(E externalObject)

      Description copied from interface: `ScoreDirector`
      Translates an entity or fact instance (often from another `Thread` or JVM) to this `ScoreDirector`'s internal working instance. Useful for `Move.rebase(ScoreDirector)` and in a `ProblemFactChange`.

      Matching is determined by the `LookUpStrategyType` on `PlanningSolution`. Matching uses a `PlanningId` by default.

      Specified by:
        `lookUpWorkingObject` in interface `ScoreDirector<Solution_>`
      Type Parameters:
        `E` - the object type
      Parameters:
        `externalObject` - sometimes null
      Returns:
        null if externalObject is null

    - #### lookUpWorkingObjectOrReturnNull

          public <E> E lookUpWorkingObjectOrReturnNull(E externalObject)

      Description copied from interface: `ScoreDirector`
      As defined by `ScoreDirector.lookUpWorkingObject(Object)`, but doesn't fail fast if no workingObject was ever added for the externalObject. It's recommended to use `ScoreDirector.lookUpWorkingObject(Object)` instead, especially in a `Move.rebase(ScoreDirector)` code.
      Specified by:
        `lookUpWorkingObjectOrReturnNull` in interface `ScoreDirector<Solution_>`
      Type Parameters:
        `E` - the object type
      Parameters:
        `externalObject` - sometimes null
      Returns:
        null if externalObject is null or if there is no workingObject for externalObject

    - #### assertExpectedWorkingScore

          public void assertExpectedWorkingScore(Score expectedWorkingScore,
                                                 Object completedAction)

      Description copied from interface: `InnerScoreDirector`
      Asserts that if the `Score` is calculated for the current `working solution` in the current `ScoreDirector` (with possibly incremental calculation residue), it is equal to the parameter `expectedWorkingScore`.

      Used to assert that skipping `ScoreDirector.calculateScore()` (when the score is otherwise determined) is correct.

      Specified by:
        `assertExpectedWorkingScore` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `expectedWorkingScore` - never null
        `completedAction` - sometimes null, when assertion fails then the completedAction's `Object.toString()` is included in the exception message

    - #### assertShadowVariablesAreNotStale

          public void assertShadowVariablesAreNotStale(Score expectedWorkingScore,
                                                       Object completedAction)

      Description copied from interface: `InnerScoreDirector`
      Asserts that if all `VariableListener`s are forcibly triggered, and therefore all shadow variables are updated if needed, that none of the shadow variables of the `working solution` change, Then also asserts that the `Score` calculated for the `working solution` afterwards is equal to the parameter `expectedWorkingScore`.

      Used to assert that the shadow variables' state is consistent with the genuine variables' state.

      Specified by:
        `assertShadowVariablesAreNotStale` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `expectedWorkingScore` - never null
        `completedAction` - sometimes null, when assertion fails then the completedAction's `Object.toString()` is included in the exception message

    - #### buildShadowVariableAnalysis

          protected String buildShadowVariableAnalysis(boolean predicted)

      Parameters:
        `predicted` - true if the score was predicted and might have been calculated on another thread
      Returns:
        never null

    - #### createShadowVariablesViolationMessage

          protected String createShadowVariablesViolationMessage()

      Returns:
        null if there are no violations

    - #### assertWorkingScoreFromScratch

          public void assertWorkingScoreFromScratch(Score workingScore,
                                                    Object completedAction)

      Description copied from interface: `InnerScoreDirector`
      Asserts that if the `Score` is calculated for the current `working solution` in a fresh `ScoreDirector` (with no incremental calculation residue), it is equal to the parameter `workingScore`.

      Furthermore, if the assert fails, a score corruption analysis might be included in the exception message.

      Specified by:
        `assertWorkingScoreFromScratch` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `workingScore` - never null
        `completedAction` - sometimes null, when assertion fails then the completedAction's `Object.toString()` is included in the exception message
      See Also:
        `InnerScoreDirectorFactory.assertScoreFromScratch(Solution_)`

    - #### assertPredictedScoreFromScratch

          public void assertPredictedScoreFromScratch(Score workingScore,
                                                      Object completedAction)

      Description copied from interface: `InnerScoreDirector`
      Asserts that if the `Score` is calculated for the current `working solution` in a fresh `ScoreDirector` (with no incremental calculation residue), it is equal to the parameter `predictedScore`.

      Furthermore, if the assert fails, a score corruption analysis might be included in the exception message.

      Specified by:
        `assertPredictedScoreFromScratch` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `workingScore` - never null
        `completedAction` - sometimes null, when assertion fails then the completedAction's `Object.toString()` is included in the exception message
      See Also:
        `InnerScoreDirectorFactory.assertScoreFromScratch(Solution_)`

    - #### assertExpectedUndoMoveScore

          public void assertExpectedUndoMoveScore(Move move,
                                                  Score beforeMoveScore)

      Description copied from interface: `InnerScoreDirector`
      Asserts that if the `Score` is calculated for the current `working solution` in the current `ScoreDirector` (with incremental calculation residue), it is equal to the parameter `beforeMoveScore`.

      Furthermore, if the assert fails, a score corruption analysis might be included in the exception message.

      Specified by:
        `assertExpectedUndoMoveScore` in interface `InnerScoreDirector<Solution_>`
      Parameters:
        `move` - never null
        `beforeMoveScore` - never null

    - #### buildScoreCorruptionAnalysis

          protected String buildScoreCorruptionAnalysis(ScoreDirector<Solution_> uncorruptedScoreDirector,
                                                        boolean predicted)

      Parameters:
        `uncorruptedScoreDirector` - never null
        `predicted` - true if the score was predicted and might have been calculated on another thread
      Returns:
        never null

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`

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