that works.
Address a = e.getHome();
a.setCity("NewCity");
e.setHome(null);
e.setHome(a);
Also if I create a new instance of Address as in
Address newa = new Address("....");
e.setAddress(newa);
Both of the above work.
But doing an update with making a new copy of the Adresss does not work for
me.
e.setHome( e.getHome().setCity("NEW"));
Do I have to override equals on the Address ?
On 9/14/06, Marc Prud'hommeaux <[EMAIL PROTECTED]> wrote:
David-
> There was a typo in my code. But even doing this, the update is
> not being
> written back to the database at commit or flush.
That's a little surprising.
What happens if you do this:
Blob home = e.getHome();
home.setStreet("new value");
e.setHome(null);
e.setHome(home);
On Sep 14, 2006, at 11:31 AM, David Wisneski wrote:
> I think I am doing what you suggest. After changing the value of
> home the
> program does
> e.setHome( e.getHome().setStreet(" new value"));
>
> There was a typo in my code. But even doing this, the update is
> not being
> written back to the database at commit or flush.
>
>
> On 9/10/06, Marc Prud'hommeaux (JIRA) <[EMAIL PROTECTED]> wrote:
>>
>> [ http://issues.apache.org/jira/browse/OPENJPA-43?page=all ]
>>
>> Marc Prud'hommeaux resolved OPENJPA-43.
>> ---------------------------------------
>>
>> Resolution: Invalid
>>
>> This is actually a known and intractible limitation: we are not
>> able to
>> intercept internal modifications for opaque types or arrays. So
>> for those
>> types, if OpenJPA is to detect that they were changed, they need
>> to be
>> re-set in their owning objects. E.g., in addition to doing:
>>
>> myPC.getSomeBlob().someInternalField++;
>>
>> you should also do:
>>
>> myPC.setSomeBlob(myPC.getSomeBlob());
>>
>> That should be sufficient to mary it "dirty". Alternately, you can
>> use the
>> OpenJPAEntityManager.dirty() method to explicitly mark the field
>> dirty.
>>
>> > update of a persistent field using a @Lob annotation is not
>> being marked
>> dirty
>> >
>> ---------------------------------------------------------------------
>> ---------
>> >
>> > Key: OPENJPA-43
>> > URL: http://issues.apache.org/jira/browse/
>> OPENJPA-43
>> > Project: OpenJPA
>> > Issue Type: Bug
>> > Components: kernel
>> > Reporter: David Wisneski
>> >
>> > An entity has a persistent field which is a serialable class
>> annotated
>> with @Lob. I am able to
>> > create and persist instances of this entity and field. But when
>> the
>> entity is retrieved and the
>> > field is updated, the update is not written back at commit.
>> > @Entity
>> > class Employee {
>> > @Id int id;
>> > @Lob Address home;
>> > class Home implements Serializable {
>> > String street
>> > EntityManager em =
>> > em.getTransaction().begin();
>> > Employee e = em.find(Employee.class, 1);
>> > Address home = e.getHome();
>> > home.setStreet("123 New Avenue");
>> > e.setHome(e);
>> > em.getTransaction().commit(); <-- the update to home
>> address does
>> not occur.
>>
>> --
>> This message is automatically generated by JIRA.
>> -
>> If you think it was sent incorrectly contact one of the
>> administrators:
>> http://issues.apache.org/jira/secure/Administrators.jspa
>> -
>> For more information on JIRA, see: http://www.atlassian.com/
>> software/jira
>>
>>
>>
