You'll want to use flush() instead of refresh(). flush() saves your
current state to the datastore
and because they are not detached, the entities within your
transaction will already be
in sync. If you use refresh(), you are tossing any changes you made
to your entities
and fetching the last state from the datastore.
On Feb 1, 2:22 am, Fernando Jorge Santos <nann...@gmail.com> wrote:
> Hi all,
>
> I'm new in JPA / JDO and I'm totally sure I'm doing something wrong. I
> don't know why I can't see children objects in the same transactions using
> the same PM
>
> ____________________________________________________________________
>
> // Here I got the DatastoreEntityManager (id=92)
> DAO dao = DAO.getInstance(DAO.JPA, requestor);
>
> // Here I got the DatastoreEntityTransactionImpl (id=94)
> dao.startTransaction()
>
> // Then I create and maker persistent a new Department (id=114)
> // It uses the same DatastoreEntityManager (id=92) and
> DatastoreEntityTransactionImpl (id=94)
> Department department = new Department()
> department.setName("New department");
> dao.persist(department);
> dao.refresh(department);
>
> // Then I create and make persistent a new Account (id=224)
> Account account = new Account();
> account.setNumber(12345);
> account.setDepartment(department); // Owned relationship working fine
> dao.persist(account);
> dao.refresh(account);
>
> // Now I'm testing it
> department.getId() // returns Department(22)
> account.getId() // returns Department(22)/Account(24)
> department.getAccounts(); // Returns an empty list
> __________________________________________________________
>
> At some point down the line I gotta get the accounts in the same
> transaction to use in another entity. I've tried to add manually the new
> Account to the* Department.accounts* field but when I tried to do it I get
> *javax.jdo.JDODetachedFieldAccessException:* You have just attempted to
> access property "accounts" yet this property was not detached when you
> detached the object. Either dont access this property, or detach it when
> detaching the object.
>
> Does someone faced the same?? I'm loosing my hair with this!!
>
> Thanks guys!
--
You received this message because you are subscribed to the Google Groups
"Google App Engine for Java" group.
To post to this group, send email to google-appengine-java@googlegroups.com.
To unsubscribe from this group, send email to
google-appengine-java+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/google-appengine-java?hl=en.
