Package javax.persistence

Annotation Interface PersistenceContext

@Target({TYPE,METHOD,FIELD}) @Retention(RUNTIME) public @interface PersistenceContext
Expresses a dependency on a container-managed EntityManager and its associated persistence context.
Since:
Java Persistence 1.0

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    String
    name
    (Optional) The name by which the entity manager is to be accessed in the environment referencing context; not needed when dependency injection is used.
    PersistenceProperty[]
    properties
    (Optional) Properties for the container or persistence provider.
    SynchronizationType
    synchronization
    (Optional) Specifies whether the persistence context is always automatically synchronized with the current transaction or whether the persistence context must be explicitly joined to the current transaction by means of the EntityManager joinTransaction method.
    PersistenceContextType
    type
    (Optional) Specifies whether a transaction-scoped persistence context or an extended persistence context is to be used.
    String
    unitName
    (Optional) The name of the persistence unit as defined in the persistence.xml file.

  • Element Details

    • name

      String name
      (Optional) The name by which the entity manager is to be accessed in the environment referencing context; not needed when dependency injection is used.
      Default:
      ""

    • unitName

      String unitName
      (Optional) The name of the persistence unit as defined in the persistence.xml file. If the unitName element is specified, the persistence unit for the entity manager that is accessible in JNDI must have the same name.
      Default:
      ""

    • type

      PersistenceContextType type
      (Optional) Specifies whether a transaction-scoped persistence context or an extended persistence context is to be used.
      Default:
      TRANSACTION

    • synchronization

      SynchronizationType synchronization
      (Optional) Specifies whether the persistence context is always automatically synchronized with the current transaction or whether the persistence context must be explicitly joined to the current transaction by means of the EntityManager joinTransaction method.
      Since:
      Java Persistence 2.1
      Default:
      SYNCHRONIZED

    • properties

      PersistenceProperty[] properties
      (Optional) Properties for the container or persistence provider. Vendor specific properties may be included in this set of properties. Properties that are not recognized by a vendor are ignored.
      Default:
      {}