org.optaplanner.core.api.domain.entity

## Annotation Type PlanningPin

-     @Target(value={METHOD,FIELD})
       @Retention(value=RUNTIME)
      public @interface PlanningPin

  Specifies that a boolean property (or field) of a `PlanningEntity` determines if the planning entity is pinned. A pinned planning entity is never changed during planning. For example, it allows the user to pin a shift to a specific employee before solving and the solver will not undo that, regardless of the constraints.

  The boolean is false if the planning entity is movable and true if the planning entity is pinned.

  It applies to all the planning variables of that planning entity. To make individual variables pinned, see https://issues.redhat.com/browse/PLANNER-124

  This is syntactic sugar for `PlanningEntity.pinningFilter()`, which is a more flexible and verbose way to pin a planning entity.

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