org.optaplanner.core.api.domain.entity

## Interface PlanningEntity.NullDifficultyComparator

- All Superinterfaces:
    Comparator
  Enclosing class:
    PlanningEntity

      public static interface PlanningEntity.NullDifficultyComparator
      extends Comparator

  Workaround for annotation limitation in `PlanningEntity.difficultyComparatorClass()`.

- - ### Method Summary

    - ### Methods inherited from interface java.util.Comparator

      `compare, comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong`

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