javax.persistence.PersistenceUnit Maven / Gradle / Ivy
// $Id: PersistenceUnit.java 17752 2009-10-15 01:19:21Z [email protected] $
// EJB3 Specification Copyright 2004-2009 Sun Microsystems, Inc.
package javax.persistence;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Target;
/**
* Expresses a dependency on an {@link EntityManagerFactory} and its
* associated persistence unit.
*
* @since Java Persistence 1.0
*/
@Target({ TYPE, METHOD, FIELD })
@Retention(RUNTIME)
public @interface PersistenceUnit {
/**
* (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 name() default "";
/**
* (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.
*/
String unitName() default "";
}