javax.persistence.PersistenceContext Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2008 - 2013 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:
* Linda DeMichiel - Java Persistence 2.1
* Linda DeMichiel - Java Persistence 2.0
*
******************************************************************************/
package javax.persistence;
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 a container-managed {@link EntityManager} and its
* associated persistence context.
*
* @since Java Persistence 1.0
*/
@Target({TYPE, METHOD, FIELD})
@Retention(RUNTIME)
public @interface PersistenceContext {
/**
* (Optional) The name by which the entity manager 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 the unitName element is
* specified, the persistence unit for the entity manager that is
* accessible in JNDI must have the same name.
*/
String unitName() default "";
/**
* (Optional) Specifies whether a transaction-scoped persistence context
* or an extended persistence context is to be used.
*/
PersistenceContextType type() default PersistenceContextType.TRANSACTION;
/**
* (Optional) Specifies whether the persistence context is always
* automatically synchronized with the current transaction or whether
* the persistence context must be explicitly joined to the current
* transaction by means of the EntityManager
* {@link EntityManager#joinTransaction joinTransaction} method.
* @since Java Persistence 2.1
*/
SynchronizationType synchronization() default SynchronizationType.SYNCHRONIZED;
/**
* (Optional) Properties for the container or persistence
* provider. Vendor specific properties may be included in this
* set of properties. Properties that are not recognized by
* a vendor are ignored.
*/
PersistenceProperty[] properties() default {};
}