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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

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

@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
7

Database size is much larger than expected (x2)

();         for (int i = 0; i < 1000; i++) {             em.getTransaction().begin();             em.persist ... ;wejhfoiasuydfajdfljweoifasldjfiejlsjdfaiowufajsdfieuajdfjiaejf;ajdfie;lajdkfjiesljdafjeia;jfe";   trans.begin();   for (; i<iNumber; i++){    Uris uri = new ... ("Url = %s%n%n", uri.getsUrl());     em.clear();     trans.begin();    }   }   trans.commit
7

Database(*.odb) file size on disk

);    System.out.println("create");    for (int i = 0; i < objects; i++) {     em.getTransaction().begin ... ");    // add references    for (int i = 0; i < objects; i++) {     em.getTransaction().begin ... ++) {     em.getTransaction().begin();     EntityA entity = em.find(EntityA.class, entityAIds.get(i
7

Error using query with MAX() function

(); } public void doit() { for(int i=1;i<32766;i++) { em.getTransaction().begin ... .getTransaction().begin(); CriteriaBuilder cb = em.getCriteriaBuilder(); CriteriaQuery<Object> q = cb ... (); em.getTransaction().begin(); } After much trying to reliably recreate this problem
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

Performance and memory usage of queries

);    em.getTransaction().begin();    MyEntity myEntity = new MyEntity();    myEntity = em.merge ... .setFlushMode(FlushModeType.AUTO);   em.getTransaction().begin();   Query q = em.createQuery("DELETE FROM ... , but indeed requires a lot of memory:     em.getTransaction().begin();     Query q = em.createQuery
7

New to Product & Having An Issue

, "dOne", null); try{ em.getTransaction().begin(); em.persist(department ... (this.foundResult); try{ em.getTransaction().begin(); em.remove ... .getResultList(); em.getTransaction().begin(); for(Department d
1

[ObjectDB 2.2.6_02] Unexpected exception (Error 990) at com.objectdb.o.OBC.aJ(OBC.java:961)

= getEntityManager(); em.getTransaction().begin(); em.persist(moment); em ... { em = getEntityManager(); em.getTransaction().begin(); em.persist(chart ... { em = getEntityManager(); em.getTransaction().begin(); chart = em

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