/*
* Copyright (c) 2008, 2009 Sun Microsystems. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Linda DeMichiel - Java Persistence 2.0 - Version 2.0 (October 1, 2009)
* Specification available from http://jcp.org/en/jsr/detail?id=317
*/
// $Id: PersistenceUnit.java 20957 2011-06-13 09:58:51Z stliu $
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
* <code>persistence.xml</code> file. If specified, the
* persistence unit for the entity manager factory that is
* accessible in JNDI must have the same name.
*/
String unitName() default "";
}