 20 | the merging object db implementation. The test case is the following, just run and watch the "Memory Used" by comparing Cascade.ALL (or Cascade.MERGE ) to nothing. Tested with last version of Object Db ( 2.5.5 ... .valueOf(i)));
em.merge(e);
}
if (! em.getTransaction |
20 | Hi, I have found a strange behavior when merging entities with "mapped by" set on @OneToMany relation. Even if object is fetched with find on the same transaction, merge is very slow. It's because on merge every single relation marked as LAZY is fetch from database. Attached two examples |
20 | that is persisted with "merge()". Then we want to persist “merge()” an new object of a different type ... .OBC.onObjectDBError(OBC.java:1503)
at com.objectdb.jpa.EMImpl.merge(EMImpl.java:526)
at com.btc.ep ... )
at com.objectdb.jpa.EMImpl.merge(EMImpl.java:523)
... 43 more But if we use enhanced classes |
20 | When merge is cascaded to a new entity object that has not been persisted ... ();
em.getTransaction().begin();
book.chapters = Arrays.asList(new Chapter());
em.merge ... )
private Long id;
}
} Fixing this bug may require totally new implementation of merge |
20 | I am frequently having an error when merging a detached object outside of a transaction ... ();
em.merge(a).setValue("second version");
em.getTransaction().commit();
em.close();
em = emf.createEntityManager();
a = em.merge(a);
System.out.println |
20 | Hello, I have a problem with the EntityManager.merge() function. I set a property value ... (ERGOClass ergoClass) throws DaoException {
entityManager.merge(ergoClass);
}
} Thanks ... merge issue or Spring / JPA transaction management issue? Maybe it is a missing @Transactional |
20 | ) (error 631) at com.objectdb.jpa.EMImpl.merge(EMImpl.java:451) at MergeTest.main(MergeTest.java:19) Thanks. Thank you for the test case. It clearly demonstrates a new problem in merging non managed entity objects (calling merge on a new non persistent object), and build 2.3.7_21 should fix |
19 | I am trying to persist a new object using merge operation.But I am getting javax.persistence.EntityNotFoundException . When working with other JPA implementor it works fine. I need to use merge beause I need to get the reference to the managed instance of the created object. I am using ObjectDB 2.3 |
19 | long id;
@ManyToOne(fetch = FetchType.LAZY, cascade = { CascadeType.PERSIST, CascadeType.MERGE ... = entityManager.merge(parentEntityNew);
entityManager.getTransaction().commit();
entityManager |
19 | Hi, we just tried to upgrade to 2.4.3 from 2.4.2. One of our regression tests is failing. Appears objects are getting created twice on merge. Please see attached unit test. Thanks Paul. This regression bug was the result of a bad optimization that is now fixed in build 2.4.3_01. pedwards eitane |