javax.persistence

Annotation Type PersistenceUnit

@Target(value={TYPE,METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface PersistenceUnit

Expresses a dependency on an EntityManagerFactory and its associated persistence unit.

Since:

Java Persistence 1.0

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
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.
String	unitName (Optional) The name of the persistence unit as defined in the persistence.xml file.

Element Detail

name

public abstract 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.

Default:

""

unitName

public abstract String unitName

(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:

""