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SUMMARY: REQUIRED | OPTIONAL DETAIL: ELEMENT

javax.persistence
Annotation Type PersistenceUnit

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

Expresses a dependency on an EntityManagerFactory.

Since:
Java Persistence 1.0

Optional Element Summary
 String name
          The name by which the entity manager factory is to be accessed in the environment referencing context, and is not needed when dependency injection is used.
 String unitName
          The name of the persistence unit as defined in the persistence.xml file.
 

name

public abstract String name
The name by which the entity manager factory is to be accessed in the environment referencing context, and is not needed when dependency injection is used.
Default:
""

unitName

public abstract String unitName
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:
""
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