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## org.optaplanner.core.api.score.holder
Interface ScoreHolder

All Known Implementing Classes:
  AbstractScoreHolder, BendableBigDecimalScoreHolder, BendableScoreHolder, HardMediumSoftLongScoreHolder, HardMediumSoftScoreHolder, HardSoftBigDecimalScoreHolder, HardSoftDoubleScoreHolder, HardSoftLongScoreHolder, HardSoftScoreHolder, SimpleBigDecimalScoreHolder, SimpleDoubleScoreHolder, SimpleLongScoreHolder, SimpleScoreHolder

    public interface ScoreHolder

This class is injected as a global by `DroolsScoreDirector` into the Drools DRL. Other `ScoreDirector` implementations do not use this class.

An implementation must extend `AbstractScoreHolder` to ensure backwards compatibility in future versions.

See Also:
  `AbstractScoreHolder`

Method Summary
`Score` | `extractScore()` Extracts the `Score`, calculated by the `KieSession` for `DroolsScoreDirector`.
`Collection<ConstraintMatchTotal>` | `getConstraintMatchTotals()` Explains the `Score` of `extractScore()`.
`boolean` | `isConstraintMatchEnabled()` Must be in sync with `ScoreDirector.isConstraintMatchEnabled()` for the `ScoreDirector` which contains this `ScoreHolder`.

Method Detail

### extractScore

    Score extractScore()

  Extracts the `Score`, calculated by the `KieSession` for `DroolsScoreDirector`. Should not be called directly, use `ScoreDirector.calculateScore()` instead.

  Returns:
    never null, the `Score` of the working `Solution`

### isConstraintMatchEnabled

    boolean isConstraintMatchEnabled()

  Must be in sync with `ScoreDirector.isConstraintMatchEnabled()` for the `ScoreDirector` which contains this `ScoreHolder`.

  Defaults to true.

  Returns:
    false if the `ConstraintMatch`s and `ConstraintMatchTotal`s do not need to be collected which is a performance boost
  See Also:
    `getConstraintMatchTotals()`

### getConstraintMatchTotals

    Collection<ConstraintMatchTotal> getConstraintMatchTotals()

  Explains the `Score` of `extractScore()`.

  Returns:
    never null
  Throws:
    `RuntimeException` - if `isConstraintMatchEnabled()` is false

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