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## org.optaplanner.core.impl.domain.variable.listener
Interface StatefulVariableListener<EntityG>

All Superinterfaces:
  Supply, VariableListener<EntityG>

All Known Implementing Classes:
  ExternalizedAnchorVariableSupply, ExternalizedSingletonInverseVariableSupply

    public interface StatefulVariableListener<EntityG>

extends VariableListener<EntityG>

A stateful `VariableListener`, often used to externalize data for a supply from the domain model itself.

Method Summary
`void` | `clearWorkingSolution(ScoreDirector scoreDirector)`
`VariableDescriptor` | `getSourceVariableDescriptor()`
`void` | `resetWorkingSolution(ScoreDirector scoreDirector)`

Methods inherited from interface org.optaplanner.core.impl.domain.variable.listener.VariableListener
`afterEntityAdded, afterEntityRemoved, afterVariableChanged, beforeEntityAdded, beforeEntityRemoved, beforeVariableChanged`

Method Detail

### getSourceVariableDescriptor

    VariableDescriptor getSourceVariableDescriptor()

### resetWorkingSolution

    void resetWorkingSolution(ScoreDirector scoreDirector)

### clearWorkingSolution

    void clearWorkingSolution(ScoreDirector scoreDirector)

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