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## org.springframework.orm.jpa
Class ExtendedEntityManagerCreator

    java.lang.Object
      org.springframework.orm.jpa.ExtendedEntityManagerCreator

    public abstract class ExtendedEntityManagerCreator

extends Object

Factory for dynamic EntityManager proxies that follow the JPA spec's semantics for "extended" EntityManagers.

Supports explicit joining of a transaction through the `joinTransaction()` method ("application-managed extended EntityManager") as well as automatic joining on each operation ("container-managed extended EntityManager").

Since:
  2.0
Author:
  Rod Johnson, Juergen Hoeller

Constructor Summary
`ExtendedEntityManagerCreator()`

Method Summary
`static EntityManager` | `createApplicationManagedEntityManager(EntityManager rawEntityManager, EntityManagerFactoryInfo emfInfo)` Create an EntityManager that can join transactions with the `joinTransaction()` method, but is not automatically managed by the container.
`static EntityManager` | `createApplicationManagedEntityManager(EntityManager rawEntityManager, EntityManagerPlusOperations plusOperations)` Create an EntityManager that can join transactions with the `joinTransaction()` method, but is not automatically managed by the container.
`static EntityManager` | `createApplicationManagedEntityManager(EntityManager rawEntityManager, EntityManagerPlusOperations plusOperations, PersistenceExceptionTranslator exceptionTranslator)` Create an EntityManager that can join transactions with the `joinTransaction()` method, but is not automatically managed by the container.
`static EntityManager` | `createContainerManagedEntityManager(EntityManager rawEntityManager, EntityManagerFactoryInfo emfInfo)` Create an EntityManager that automatically joins transactions on each operation in a transaction.
`static EntityManager` | `createContainerManagedEntityManager(EntityManager rawEntityManager, EntityManagerPlusOperations plusOperations)` Create an EntityManager that automatically joins transactions on each operation in a transaction.
`static EntityManager` | `createContainerManagedEntityManager(EntityManager rawEntityManager, EntityManagerPlusOperations plusOperations, PersistenceExceptionTranslator exceptionTranslator)` Create an EntityManager that automatically joins transactions on each operation in a transaction.
`static EntityManager` | `createContainerManagedEntityManager(EntityManagerFactory emf)` Create an EntityManager that automatically joins transactions on each operation in a transaction.
`static EntityManager` | `createContainerManagedEntityManager(EntityManagerFactory emf, Map properties)` Create an EntityManager that automatically joins transactions on each operation in a transaction.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### ExtendedEntityManagerCreator

    public ExtendedEntityManagerCreator()

Method Detail

### createApplicationManagedEntityManager

    public static EntityManager createApplicationManagedEntityManager(EntityManager rawEntityManager,
                                                                      EntityManagerPlusOperations plusOperations)

  Create an EntityManager that can join transactions with the `joinTransaction()` method, but is not automatically managed by the container.

  Parameters:
    `rawEntityManager` - raw EntityManager
    `plusOperations` - an implementation of the EntityManagerPlusOperations interface, if those operations should be exposed (may be `null`)
  Returns:
    an application-managed EntityManager that can join transactions but does not participate in them automatically

### createApplicationManagedEntityManager

    public static EntityManager createApplicationManagedEntityManager(EntityManager rawEntityManager,
                                                                      EntityManagerPlusOperations plusOperations,
                                                                      PersistenceExceptionTranslator exceptionTranslator)

  Create an EntityManager that can join transactions with the `joinTransaction()` method, but is not automatically managed by the container.

  Parameters:
    `rawEntityManager` - raw EntityManager
    `plusOperations` - an implementation of the EntityManagerPlusOperations interface, if those operations should be exposed (may be `null`)
    `exceptionTranslator` - the exception translator to use for translating JPA commit/rollback exceptions during transaction synchronization (may be `null`)
  Returns:
    an application-managed EntityManager that can join transactions but does not participate in them automatically

### createApplicationManagedEntityManager

    public static EntityManager createApplicationManagedEntityManager(EntityManager rawEntityManager,
                                                                      EntityManagerFactoryInfo emfInfo)

  Create an EntityManager that can join transactions with the `joinTransaction()` method, but is not automatically managed by the container.

  Parameters:
    `rawEntityManager` - raw EntityManager
    `emfInfo` - the EntityManagerFactoryInfo to obtain the EntityManagerPlusOperations and PersistenceUnitInfo from
  Returns:
    an application-managed EntityManager that can join transactions but does not participate in them automatically

### createContainerManagedEntityManager

    public static EntityManager createContainerManagedEntityManager(EntityManager rawEntityManager,
                                                                    EntityManagerPlusOperations plusOperations)

  Create an EntityManager that automatically joins transactions on each operation in a transaction.

  Parameters:
    `rawEntityManager` - raw EntityManager
    `plusOperations` - an implementation of the EntityManagerPlusOperations interface, if those operations should be exposed (may be `null`)
  Returns:
    a container-managed EntityManager that will automatically participate in any managed transaction

### createContainerManagedEntityManager

    public static EntityManager createContainerManagedEntityManager(EntityManager rawEntityManager,
                                                                    EntityManagerPlusOperations plusOperations,
                                                                    PersistenceExceptionTranslator exceptionTranslator)

  Create an EntityManager that automatically joins transactions on each operation in a transaction.

  Parameters:
    `rawEntityManager` - raw EntityManager
    `plusOperations` - an implementation of the EntityManagerPlusOperations interface, if those operations should be exposed (may be `null`)
    `exceptionTranslator` - the exception translator to use for translating JPA commit/rollback exceptions during transaction synchronization (may be `null`)
  Returns:
    a container-managed EntityManager that will automatically participate in any managed transaction

### createContainerManagedEntityManager

    public static EntityManager createContainerManagedEntityManager(EntityManager rawEntityManager,
                                                                    EntityManagerFactoryInfo emfInfo)

  Create an EntityManager that automatically joins transactions on each operation in a transaction.

  Parameters:
    `rawEntityManager` - raw EntityManager
    `emfInfo` - the EntityManagerFactoryInfo to obtain the EntityManagerPlusOperations and PersistenceUnitInfo from
  Returns:
    a container-managed EntityManager that will automatically participate in any managed transaction

### createContainerManagedEntityManager

    public static EntityManager createContainerManagedEntityManager(EntityManagerFactory emf)

  Create an EntityManager that automatically joins transactions on each operation in a transaction.

  Parameters:
    `emf` - the EntityManagerFactory to create the EntityManager with. If this implements the EntityManagerFactoryInfo interface, appropriate handling of the native EntityManagerFactory and available EntityManagerPlusOperations will automatically apply.
  Returns:
    a container-managed EntityManager that will automatically participate in any managed transaction
  See Also:
    `EntityManagerFactory.createEntityManager()`

### createContainerManagedEntityManager

    public static EntityManager createContainerManagedEntityManager(EntityManagerFactory emf,
                                                                    Map properties)

  Create an EntityManager that automatically joins transactions on each operation in a transaction.

  Parameters:
    `emf` - the EntityManagerFactory to create the EntityManager with. If this implements the EntityManagerFactoryInfo interface, appropriate handling of the native EntityManagerFactory and available EntityManagerPlusOperations will automatically apply.
    `properties` - the properties to be passed into the `createEntityManager` call (may be `null`)
  Returns:
    a container-managed EntityManager that will automatically participate in any managed transaction
  See Also:
    `EntityManagerFactory.createEntityManager(java.util.Map)`

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