javax.persistence.PersistenceUnit - JPA annotation

javax.persistence
Annotation PersistenceUnit

Target:
Classes and fields (including property get methods)
Expresses a dependency on an EntityManagerFactory and its associated persistence unit.
Since:
JPA 1.0
String name
(Optional) The name by which the entity manager factory is to be accessed in the environment referencing context; not needed when dependency injection is used.
(Optional) The name by which the entity manager factory is to be accessed in the environment referencing context; not needed when dependency injection is used.
Default value:
""
Since:
JPA 1.0
String unitName
(Optional) The name of the persistence unit as defined in the persistence.xml file.
(Optional) The name of the persistence unit as defined in the persistence.xml file. If specified, the persistence unit for the entity manager factory that is accessible in JNDI must have the same name.
Default value:
""
Since:
JPA 1.0