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## org.optaplanner.core.impl.score.definition
Interface ScoreDefinition<S extends Score>

All Known Implementing Classes:
  AbstractScoreDefinition, BendableScoreDefinition, HardMediumSoftScoreDefinition, HardSoftBigDecimalScoreDefinition, HardSoftDoubleScoreDefinition, HardSoftLongScoreDefinition, HardSoftScoreDefinition, SimpleBigDecimalScoreDefinition, SimpleDoubleScoreDefinition, SimpleLongScoreDefinition, SimpleScoreDefinition

    public interface ScoreDefinition<S extends Score>

A ScoreDefinition knows how to compare `Score`s and what the perfect maximum/minimum `Score` is.

See Also:
  `AbstractScoreDefinition`, `HardSoftScoreDefinition`

Method Summary
`ScoreHolder` | `buildScoreHolder(boolean constraintMatchEnabled)`
`double` | `calculateTimeGradient(S startScore, S endScore, S score)` See explanation in `Termination.calculateSolverTimeGradient(DefaultSolverScope)`.
`String` | `formatScore(Score score)` Returns a `String` representation of the `Score`.
`S` | `getPerfectMaximumScore()` The perfect maximum `Score` is the `Score` of which there is no better in any problem instance.
`S` | `getPerfectMinimumScore()` The perfect minimum `Score` is the `Score` of which there is no worse in any problem instance.
`Class<S>` | `getScoreClass()` Returns the `Class` of the actual `Score` implementation
`Score` | `parseScore(String scoreString)` Parses the `String` and returns a `Score`.

Method Detail

### getPerfectMaximumScore

    S getPerfectMaximumScore()

  The perfect maximum `Score` is the `Score` of which there is no better in any problem instance. This doesn't mean that the current problem instance, or any problem instance for that matter, could ever attain that `Score`. For example, most cases have a perfect maximum `Score` of zero, as most use cases only have negative constraints.

  Returns:
    null if not supported

### getPerfectMinimumScore

    S getPerfectMinimumScore()

  The perfect minimum `Score` is the `Score` of which there is no worse in any problem instance. This doesn't mean that the current problem instance, or any problem instance for that matter, could ever attain such a bad `Score`. For example, most cases have a perfect minimum `Score` of negative infinity.

  Returns:
    null if not supported

### getScoreClass

    Class<S> getScoreClass()

  Returns the `Class` of the actual `Score` implementation

  Returns:
    never null

### formatScore

    String formatScore(Score score)

  Returns a `String` representation of the `Score`.

  Parameters:
    `score` - never null
  Returns:
    never null
  See Also:
    `parseScore(String)`

### parseScore

    Score parseScore(String scoreString)

  Parses the `String` and returns a `Score`.

  Parameters:
    `scoreString` - never null
  Returns:
    never null
  See Also:
    `formatScore(Score)`

### calculateTimeGradient

    double calculateTimeGradient(S startScore,
                                 S endScore,
                                 S score)

  See explanation in `Termination.calculateSolverTimeGradient(DefaultSolverScope)`.

  Parameters:
    `startScore` - never null
    `endScore` - never null
    `score` - never null
  Returns:
    between 0.0 and 1.0

### buildScoreHolder

    ScoreHolder buildScoreHolder(boolean constraintMatchEnabled)

  Parameters:
    `constraintMatchEnabled` - true if `ScoreHolder.isConstraintMatchEnabled()` should be true
  Returns:
    never null

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