# Hierarchy For Package org.optaplanner.core.api.domain.variable

Package Hierarchies:

- All Packages

## Interface Hierarchy

- java.lang.AutoCloseable
  - java.io.Closeable
    - org.optaplanner.core.api.domain.variable.VariableListener<Solution_,​Entity_>
      - org.optaplanner.core.api.domain.variable.CustomShadowVariable.NullVariableListener
- java.util.Comparator<T>
  - org.optaplanner.core.api.domain.variable.PlanningVariable.NullStrengthComparator
- org.optaplanner.core.api.domain.variable.PlanningVariableReference.NullEntityClass
- org.optaplanner.core.impl.heuristic.selector.common.decorator.SelectionSorterWeightFactory<Solution_,​T>
  - org.optaplanner.core.api.domain.variable.PlanningVariable.NullStrengthWeightFactory

## Annotation Type Hierarchy

- org.optaplanner.core.api.domain.variable.AnchorShadowVariable (implements java.lang.annotation.Annotation)
- org.optaplanner.core.api.domain.variable.CustomShadowVariable (implements java.lang.annotation.Annotation)
- org.optaplanner.core.api.domain.variable.InverseRelationShadowVariable (implements java.lang.annotation.Annotation)
- org.optaplanner.core.api.domain.variable.PlanningVariable (implements java.lang.annotation.Annotation)
- org.optaplanner.core.api.domain.variable.PlanningVariableReference (implements java.lang.annotation.Annotation)

## Enum Hierarchy

- java.lang.Object
  - java.lang.Enum<E> (implements java.lang.Comparable<T>, java.io.Serializable)
    - org.optaplanner.core.api.domain.variable.PlanningVariableGraphType