javax.persistence.PersistenceUnit Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2008 - 2015 Oracle Corporation. 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:
* Petros Splinakis - Java Persistence 2.2
* Linda DeMichiel - Java Persistence 2.1
* Linda DeMichiel - Java Persistence 2.0
*
******************************************************************************/
package javax.persistence;
import java.lang.annotation.Repeatable;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.*;
import java.lang.annotation.Retention;
import static java.lang.annotation.RetentionPolicy.*;
/**
* Expresses a dependency on an {@link EntityManagerFactory} and its
* associated persistence unit.
*
* @since Java Persistence 1.0
*/
@Repeatable(PersistenceUnits.class)
@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 "";
}