8 | Optimistic locking: prevent version increment on entity collection attribute is the EntityManager em.getTransaction().begin(); Document doc = new Document ... "); EntityManager em = emf.createEntityManager(); em.getTransaction().begin ... .createEntityManager(); em.getTransaction().begin(); Document doc = new Document(); // Note |
8 | Internal exception when updating date filed (TemporalType.DATE).getTransaction().begin(); TypedQuery<Person> personQuery = entityManager ... ) { try { entityManager.getTransaction().begin(); for (int index ... ) { entityManager.getTransaction().begin(); for (int index = 0; index < 10000; index |
8 | Date field Index is corrupted due to time change.createEntityManager(); em.getTransaction().begin(); // Add records ... .createQuery("SELECT COUNT(r) FROM DateTime AS r"); em.getTransaction().begin(); Long r ... "); em.getTransaction().begin(); q.executeUpdate(); em.getTransaction |
8 | Schema Update: class hierarchy change.createEntityManager(); // Persist an entity em.getTransaction().begin(); MyEntity entity = new ... .persist(entity); em.getTransaction().commit(); em.getTransaction().begin(); MyEntity ... (); //don't create a new object! // // Persist an entity // em.getTransaction().begin |
8 | Updating Entities().begin(); this.rate = rate; Main.paygradeDB.getTransaction().commit(); return true ... -> System.out.println(p.getRate())); Main.paygradeDB.getTransaction().begin(); modifyTo.executeUpdate ... .getTransaction().begin(); for(Employee e : Query.employeesByPaygrade(p)) //Returns only Employees |
8 | Persist error @ManyToMany how to define correct entities relationships checkActive(){ if(!em.getTransaction().isActive()) em.getTransaction().begin ... (){ if(!em.getTransaction().isActive()) em.getTransaction().begin ... ().isActive()) em.getTransaction().begin(); } } } lo Hoel If you use merge |
8 | Remove a modified entity cause an optimistic lock exception(); em.getTransaction().begin(); em.persist(new MyEntity()); em.getTransaction ... .getTransaction().begin(); MyEntity e = em.find(MyEntity.class, 1); e.increaseValue ... "); EntityManager em = emf.createEntityManager(); em.setFlushMode(FlushModeType.AUTO); em.getTransaction().begin |
8 | Items in list are doubled, when the entity class is not enhanced.createQuery("select c from Customer c").getResultList(); em.getTransaction().begin ... = em.createQuery("select i from Item i").getResultList(); em.getTransaction().begin ... (); em.getTransaction().begin(); Customer c = new Customer(); em |
8 | @OneToMany(fetch = FetchType.LAZY) list is always null) { try { transaction.begin(); entityManager.persist(o ... { transaction.begin(); entityManager.persist(child); if (child ... { transaction.begin(); entityManager.persist(o); transaction.commit |
1 | Remove of an entry from a @OneToMany collection is not possible if the enhancer is disabled parentEntity = new ParentEntity(); entityManager.getTransaction().begin(); entityManager.persist(parentEntity); entityManager.getTransaction().commit(); entityManager.getTransaction().begin ... "); EntityManager em = emf.createEntityManager(); em.getTransaction().begin |
