120 | getReference(entityClass, primaryKey)Method javax.persistence.EntityManager T getReference( Class<T> entityClass, Object primaryKey ) Get an instance, whose state may be lazily fetched. If the requested instance does not exist in ... . (The persistence provider runtime is permitted to throw the EntityNotFoundException when getReference is called |
59 | Retrieving JPA Entity Objects null is returned. A similar method, getReference, can be considered the lazy version of find: Employee employee = em.getReference(Employee.class, 1); The getReference method works like the find ... accessed. The getReference method is useful when a reference to an entity object is required |
29 | How to Use a SF with extended Persistence Context? to instantiate component view at org.jboss.as.ee.component.ViewManagedReferenceFactory.getReference ... .Final] at org.jboss.as.ee.component.ViewManagedReferenceFactory.getReference ... .getReference(ViewManagedReferenceFactory.java:52) [jboss-as-ee-7.1.1.Final.jar:7.1.1.Final] at org.jboss.as |
14 | Searching lists within objects.getResultList(); If I try to use isMember I have to use: Attribute attributeLastName = em.getReference |
14 | Persist error @ManyToMany how to define correct entities relationships (possibly using em.getReference) rather than create new Category instances. You may also consider |
12 | javax.persistence.EntityManager Since: JPA 2.0 T getReference(Class<T> entityClass, Object primaryKey) Get an instance, whose state ... when getReference is called.) The application should not expect that the instance state will be available |
12 | javax.persistence.EntityNotFoundException EntityManager.getReference is accessed but the entity does not exist. Thrown when EntityManager.refresh ... , if one is active, will be marked for rollback. Since: JPA 1.0 See Also: EntityManager.getReference |
2 | ObjectDB needs "insert ignore" is expected to be a bit faster in that case (and check also getReference, which could be faster |
1 | javax.jdo.JDOEntityManager for entity manager Since: JPA 2.0 T getReference(Class<T> entityClass, Object primaryKey) Get an instance ... the EntityNotFoundException when getReference is called.) The application should not expect that the instance state |
