7 | Extra uninitialised entities spawned on merge().createEntityManager(); em.getTransaction().begin(); Element root = new Element(null ... ); if (DO_PERSIST_BEFORE_MERGE) { em.getTransaction().begin(); em.persist(e); em.getTransaction().commit(); } em.getTransaction().begin |
7 | Should derived fields of an EmbeddedId be manually maintained by app code?(); em.getTransaction().begin(); EContainer container = EContainer.getInstance(em); long begin = System.currentTimeMillis(); container.generateMapItems(numItems, false, em); long ... ) + " milliseconds"); System.out.println("Created " + numItems + " in " + (end - begin) + " milliseconds |
7 | Empty temporary dat files in the temp folder, begin a transaction, do some stuff (find, persist, remove …) and then commit or in the case of errors ... ().begin(); MyEntity myEntity = new MyEntity(); myEntity.name = "DBFILE: " + db; em.persist ... .getTransaction().begin(); // do anything - access an entity MyEntity myEntity = em.find(MyEntity |
7 | Left join fetch behaviour doesn't retrieve children?(); if (! em.getTransaction().isActive()) { em.getTransaction().begin ... .getTransaction().begin(); } MyEntity e1 = new MyEntity("parent1"); e1.addChild(String.valueOf ... ()) { em.getTransaction().begin(); } // Write 100 000 entities with 1 child for each for (int |
6 | Issue with orphanRemoval and multiple EntityManagers.getTransaction().begin(); em.persist(newOrganisation); em.getTransaction ... .com")); em.getTransaction().begin(); //em.merge(originalOrganisation); em |
6 | Schema-Update: Rename superclass and remove one subclass(); // // Persist an entity em.getTransaction().begin(); ChildClassA entity1 = new ChildClassA ... (RenamedSuperClass.class); em.getTransaction().begin(); // do something ChildClassA entityWithID1 |
6 | persisting object with long[][] arrays of array.getTransaction().begin(); emg.persist(obj); emg.getTransaction().commit(); emg ... ), random2(n), random2(n)); emg.getTransaction().begin(); emg.persist |
6 | Problem with byte arrays in JDO - internal exception(); // Clear out existing objects pm.currentTransaction().begin(); Query query = pm ... ().commit(); pm.currentTransaction().begin(); Example example1 = new Example |
6 | find() cost unreasonable time!.begin(); Nodes parent = new Nodes(); em.persist(parent); queue.add(parent); int iNum = 0 ... (); trans.begin(); } } trans.commit(); System.out.printf("Total: %d, Level:%d %n", iNum |
1 | spuriously objectdb objects have null references Object(); public static void begin(EntityManager threadEntityManager){ synchronized(lockBegin){ try { threadEntityManager.getTransaction().begin(); } catch (Exception e |
