23 | Is it possible to remove parent/child entities without refresh?We have a big entity object tree in our project. If I use the entityManager.remove(childEntity) method to remove a child entity a entityManager.refresh(parentEntity) is necessary in order to have an updated parent/child object tree in memory. But entityManager.refresh is too slow for our project |
17 | Updating Entities"); public static EntityManager employeeDB = emf.createEntityManager(); public static EntityManager ... EntityManagers were not communicating their changes to each other. Which is where my question comes in ... . That said - those updates take place within their respective EntityManager i.e. EmployeeOverview deals |
17 | Merge with Parent/Child entities not possible javax.persistence.Entity; import javax.persistence.EntityManager; import javax.persistence ... id) { this.id = id; } } private EntityManager createEntityManager(String dbFileName ... ("objectdb:" + dbFileName); EntityManager entityManager = emf.createEntityManager |
16 | Internal exception when updating date filed (TemporalType.DATE) entityManagerFactory; private EntityManager entityManager; public DataManager(String ... (connectionString); entityManager = entityManagerFactory.createEntityManager ... ) { System.out.println("Set new birthday:" + newBirthday.toString()); try { entityManager |
5 | javax.persistence.EntityManagerFactory: IllegalStateException - if the entity manager factory has been closed Since: JPA 1.0 EntityManager createEntityManager() Create a new application-managed EntityManager. Create a new application-managed EntityManager. This method returns a new EntityManager instance each time it is invoked. The isOpen |
4 | javax.persistence.OptimisticLockException, if one is active, will be marked for rollback. Since: JPA 1.0 See Also: EntityManager.find(Class, Object, LockModeType) EntityManager.find(Class, Object, LockModeType, java.util.Map) EntityManager.lock(Object, LockModeType) EntityManager.lock(Object, LockModeType, java.util.Map |
3 | createEntityManager(map)Method javax.persistence.EntityManagerFactory EntityManager createEntityManager( Map map ) Create a new application-managed EntityManager with the specified Map of properties. This method returns a new EntityManager instance each time it is invoked. The isOpen method will return true |
3 | createEntityManager()Method javax.persistence.EntityManagerFactory EntityManager createEntityManager() Create a new application-managed EntityManager. This method returns a new EntityManager instance each time it is invoked. The isOpen method will return true on the returned instance. Returns: entity manager instance |
3 | javax.persistence.NamedQuery EntityManager em; ... customers = em.createNamedQuery("findAllCustomersWithName ... with the EntityManager methods that create query objects. (Required) The name used to refer to the query with the EntityManager methods that create query objects. Since: JPA 1.0 String query (Required) The query |
0 | javax.jdo.JDOEntityManagerjavax.jdo Interface JDOEntityManager Superinterfaces: EntityManager, PersistenceManager Since: JDO ... getDelegate() Return the underlying provider object for the EntityManager, if available. Return the underlying provider object for the EntityManager, if available. The result of this method is implementation |
