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.
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