javax.persistence.NamedQuery Maven / Gradle / Ivy
// $Id: NamedQuery.java 17752 2009-10-15 01:19:21Z [email protected] $
// EJB3 Specification Copyright 2004-2009 Sun Microsystems, Inc.
package javax.persistence;
import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import static javax.persistence.LockModeType.NONE;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Specifies a static, named query in the Java Persistence query language.
* Query names are scoped to the persistence unit.
* The NamedQuery annotation can be applied to an entity or mapped superclass.
*
* The following is an example of the definition of a named query
* in the Java Persistence query language:
*
*
* @NamedQuery(
* name="findAllCustomersWithName",
* query="SELECT c FROM Customer c WHERE c.name LIKE :custName"
* )
*
*
* The following is an example of the use of a named query:
*
*
* @PersistenceContext
* public EntityManager em;
* ...
* customers = em.createNamedQuery("findAllCustomersWithName")
* .setParameter("custName", "Smith")
* .getResultList();
*
*
* @since Java Persistence 1.0
*/
@Target({TYPE})
@Retention(RUNTIME)
public @interface NamedQuery {
/**
* (Required) The name used to refer to the query with the {@link EntityManager}
* methods that create query objects.
*/
String name();
/** (Required)
* The query string in the Java Persistence query language.
*/
String query();
/**
* (Optional) The lock mode type to use in query execution. If a lockMode
* other than LockModeType.NONE is specified, the query must be executed in
* a transaction.
* @since Java Persistence 2.0
*/
LockModeType lockMode() default NONE;
/** (Optional) Query properties and hints. May include
* vendor-specific query hints.
*/
QueryHint[] hints() default {};
}