# Package org.optaplanner.core.api.domain.lookup

- Enum Summary
  Enum | Description
  --- | ---
  LookUpStrategyType | Determines how `ScoreDirector.lookUpWorkingObject(Object)` maps a `problem fact` or a `planning entity` from an external copy to the internal one.

- Annotation Types Summary
  Annotation Type | Description
  --- | ---
  PlanningId | Specifies that a bean property (or a field) is the id to match when `locating` an externalObject (often from another `Thread` or JVM).