# Package org.optaplanner.core.impl.constructionheuristic.placer

- Interface Summary
  Interface | Description
  --- | ---
  EntityPlacer<Solution_> |
  EntityPlacerFactory<Solution_> |

- Class Summary
  Class | Description
  --- | ---
  AbstractEntityPlacer<Solution_> | Abstract superclass for `EntityPlacer`.
  Placement<Solution_> |
  PooledEntityPlacer<Solution_> |
  PooledEntityPlacerFactory<Solution_> |
  QueuedEntityPlacer<Solution_> |
  QueuedEntityPlacerFactory<Solution_> |
  QueuedValuePlacer<Solution_> |
  QueuedValuePlacerFactory<Solution_> |