Package org.apache.tapestry5.jpa

## Interface EntityManagerManager

- All Known Implementing Classes:
    `EntityManagerManagerImpl`

      public interface EntityManagerManager

  Manages `EntityManager`s for the current thread. An `EntityManager` is created as needed and closed at the end of each request. The implementation of this service is per-thread.
  Since:
    5.3

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `EntityManager` | `getEntityManager​(String persistenceUnitName)` | Gets the active EntityManager for this request, creating it as necessary.
    `Map<String,​EntityManager>` | `getEntityManagers()` | Gets all active EntityManagers for this request, creating them as necessary.

- - ### Method Detail

    - #### getEntityManager

          EntityManager getEntityManager​(String persistenceUnitName)

      Gets the active EntityManager for this request, creating it as necessary.
      Parameters:
        `persistenceUnitName` - the name of a persistence unit as defined in `persistence.xml`
      Returns:
        EntityManager for the persistence unit,

    - #### getEntityManagers

          Map<String,​EntityManager> getEntityManagers()

      Gets all active EntityManagers for this request, creating them as necessary.
      Returns:
        Map in which persistence unit names are associated with EntityManagers