Package org.optaplanner.core.impl.score.director.stream

Class DroolsConstraintStreamScoreDirector<Solution_,Score_ extends Score<Score_>>

java.lang.Object

org.optaplanner.core.impl.score.director.AbstractScoreDirector<Solution_,Score_,DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_>>

org.optaplanner.core.impl.score.director.stream.DroolsConstraintStreamScoreDirector<Solution_,Score_>

Type Parameters:

Solution_ - the solution type, the class with the PlanningSolution annotation

All Implemented Interfaces:

AutoCloseable, Cloneable, ScoreDirector<Solution_>, InnerScoreDirector<Solution_,Score_>

public final class DroolsConstraintStreamScoreDirector<Solution_,Score_ extends Score<Score_>>
extends AbstractScoreDirector<Solution_,Score_,DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_>>

FP streams implementation of ScoreDirector, which only recalculates the Score of the part of the working solution that changed, instead of the going through the entire PlanningSolution. This is incremental calculation, which is fast.

See Also:

ScoreDirector

Field Summary

Fields inherited from class org.optaplanner.core.impl.score.director.AbstractScoreDirector

allChangesWillBeUndoneBeforeStepEnds, calculationCount, constraintMatchEnabledPreference, logger, lookUpEnabled, lookUpManager, scoreDirectorFactory, variableListenerSupport, workingEntityListRevision, workingInitScore, workingSolution

Constructor Summary

Constructors

Constructor	Description
DroolsConstraintStreamScoreDirector(DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_> scoreDirectorFactory, boolean lookUpEnabled, boolean constraintMatchEnabledPreference)

Method Summary

Modifier and Type	Method	Description
void	afterEntityAdded(EntityDescriptor<Solution_> entityDescriptor, Object entity)
void	afterEntityRemoved(EntityDescriptor<Solution_> entityDescriptor, Object entity)
void	afterProblemFactAdded(Object problemFact)
void	afterProblemFactRemoved(Object problemFact)
void	afterProblemPropertyChanged(Object problemFactOrEntity)
void	afterVariableChanged(VariableDescriptor<Solution_> variableDescriptor, Object entity)
Score_	calculateScore()	Calculates the Score and updates the working solution accordingly.
void	close()	Needs to be called after use because some implementations need to clean up their resources.
Map<String,ConstraintMatchTotal<Score_>>	getConstraintMatchTotalMap()	Explains the Score of InnerScoreDirector.calculateScore() by splitting it up per Constraint.
Map<Object,Indictment<Score_>>	getIndictmentMap()	Explains the impact of each planning entity or problem fact on the Score.
boolean	isConstraintMatchEnabled()
boolean	requiresFlushing()	Some score directors (such as the Drools-based) keep a set of changes that they only apply when InnerScoreDirector.calculateScore() is called.
void	setWorkingSolution(Solution_ workingSolution)	The working solution must never be the same instance as the best solution, it should be a (un)changed clone.

Methods inherited from class org.optaplanner.core.impl.score.director.AbstractScoreDirector

afterEntityAdded, afterEntityRemoved, afterVariableChanged, assertExpectedUndoMoveScore, assertExpectedWorkingScore, assertNonNullPlanningIds, assertPredictedScoreFromScratch, assertShadowVariablesAreNotStale, assertWorkingScoreFromScratch, beforeEntityAdded, beforeEntityAdded, beforeEntityRemoved, beforeEntityRemoved, beforeProblemFactAdded, beforeProblemFactRemoved, beforeProblemPropertyChanged, beforeVariableChanged, beforeVariableChanged, buildScoreCorruptionAnalysis, buildShadowVariableAnalysis, changeVariableFacade, clone, cloneSolution, cloneWorkingSolution, createChildThreadScoreDirector, createShadowVariablesViolationMessage, doAndProcessMove, doAndProcessMove, getCalculationCount, getScoreDefinition, getScoreDirectorFactory, getSolutionDescriptor, getSupplyManager, getWorkingEntityListRevision, getWorkingSolution, isAllChangesWillBeUndoneBeforeStepEnds, isConstraintConfiguration, isConstraintMatchEnabledPreference, isLookUpEnabled, isWorkingEntityListDirty, lookUpWorkingObject, lookUpWorkingObjectOrReturnNull, overwriteConstraintMatchEnabledPreference, resetCalculationCount, setAllChangesWillBeUndoneBeforeStepEnds, setCalculatedScore, setWorkingEntityListDirty, toString, triggerVariableListeners

Methods inherited from class java.lang.Object

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

Constructor Detail

DroolsConstraintStreamScoreDirector

public DroolsConstraintStreamScoreDirector(DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_> scoreDirectorFactory,
                                           boolean lookUpEnabled,
                                           boolean constraintMatchEnabledPreference)

Method Detail

setWorkingSolution

public void setWorkingSolution(Solution_ workingSolution)

Description copied from interface: InnerScoreDirector

The working solution must never be the same instance as the best solution, it should be a (un)changed clone.

Specified by:

setWorkingSolution in interface InnerScoreDirector<Solution_,Score_ extends Score<Score_>>

Overrides:

setWorkingSolution in class AbstractScoreDirector<Solution_,Score_ extends Score<Score_>,DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_ extends Score<Score_>>>

Parameters:

workingSolution - never null

calculateScore

public Score_ calculateScore()

Description copied from interface: InnerScoreDirector

Calculates the Score and updates the working solution accordingly.

Returns:

never null, the Score of the working solution

isConstraintMatchEnabled

public boolean isConstraintMatchEnabled()

Returns:

true if InnerScoreDirector.getConstraintMatchTotalMap() and InnerScoreDirector.getIndictmentMap() can be called

getConstraintMatchTotalMap

public Map<String,ConstraintMatchTotal<Score_>> getConstraintMatchTotalMap()

Description copied from interface: InnerScoreDirector

Explains the Score of InnerScoreDirector.calculateScore() by splitting it up per Constraint.

The sum of ConstraintMatchTotal.getScore() equals InnerScoreDirector.calculateScore().

Call InnerScoreDirector.calculateScore() before calling this method, unless that method has already been called since the last PlanningVariable changes.

Returns:

never null, the key is the constraintId (to create one, use ConstraintMatchTotal.composeConstraintId(String, String)).

See Also:

InnerScoreDirector.getIndictmentMap()

getIndictmentMap

public Map<Object,Indictment<Score_>> getIndictmentMap()

Description copied from interface: InnerScoreDirector

Explains the impact of each planning entity or problem fact on the Score. An Indictment is basically the inverse of a ConstraintMatchTotal: it is a Score total for each justification Object in ConstraintMatch.getJustificationList().

The sum of ConstraintMatchTotal.getScore() differs from InnerScoreDirector.calculateScore() because each ConstraintMatch.getScore() is counted for each justification in ConstraintMatch.getJustificationList().

Call InnerScoreDirector.calculateScore() before calling this method, unless that method has already been called since the last PlanningVariable changes.

Returns:

never null, the key is a problem fact or a planning entity

See Also:

InnerScoreDirector.getConstraintMatchTotalMap()

requiresFlushing

public boolean requiresFlushing()

Description copied from interface: InnerScoreDirector

Some score directors (such as the Drools-based) keep a set of changes that they only apply when InnerScoreDirector.calculateScore() is called. Until that happens, this set accumulates and could possibly act as a memory leak.

Returns:

true if the score director can potentially cause a memory leak due to unflushed changes.

close

public void close()

Description copied from interface: InnerScoreDirector

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 InnerScoreDirector<Solution_,Score_ extends Score<Score_>>

Overrides:

close in class AbstractScoreDirector<Solution_,Score_ extends Score<Score_>,DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_ extends Score<Score_>>>

afterEntityAdded

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

Overrides:

afterEntityAdded in class AbstractScoreDirector<Solution_,Score_ extends Score<Score_>,DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_ extends Score<Score_>>>

afterVariableChanged

public void afterVariableChanged(VariableDescriptor<Solution_> variableDescriptor,
                                 Object entity)

Specified by:

afterVariableChanged in interface InnerScoreDirector<Solution_,Score_ extends Score<Score_>>

Overrides:

afterVariableChanged in class AbstractScoreDirector<Solution_,Score_ extends Score<Score_>,DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_ extends Score<Score_>>>

afterEntityRemoved

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

Overrides:

afterEntityRemoved in class AbstractScoreDirector<Solution_,Score_ extends Score<Score_>,DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_ extends Score<Score_>>>

afterProblemFactAdded

public void afterProblemFactAdded(Object problemFact)

Specified by:

afterProblemFactAdded in interface ScoreDirector<Solution_>

Overrides:

afterProblemFactAdded in class AbstractScoreDirector<Solution_,Score_ extends Score<Score_>,DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_ extends Score<Score_>>>

afterProblemPropertyChanged

public void afterProblemPropertyChanged(Object problemFactOrEntity)

Specified by:

afterProblemPropertyChanged in interface ScoreDirector<Solution_>

Overrides:

afterProblemPropertyChanged in class AbstractScoreDirector<Solution_,Score_ extends Score<Score_>,DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_ extends Score<Score_>>>

afterProblemFactRemoved

public void afterProblemFactRemoved(Object problemFact)

Specified by:

afterProblemFactRemoved in interface ScoreDirector<Solution_>

Overrides:

afterProblemFactRemoved in class AbstractScoreDirector<Solution_,Score_ extends Score<Score_>,DroolsConstraintStreamScoreDirectorFactory<Solution_,Score_ extends Score<Score_>>>