Thanks a lot, I understand that I need a transaction now, while before
it could work without this... I have no idea of how to do that.
I noticed that in the doc of amber
(http://caucho.com/resin/doc/amber.xtp) there was a
@TransactionAnnotation but this makes a syntax error !
Thanks to eclipse I found a @TransactionAnn, I added it at the beginning
of my function definition, but this does not change (no update generated)
Is there any doc about this ?
Daniel López wrote:
> Hi again,
> Some quick tests show that no persist() or merge() should be necessary
> to update an entity inside a persistent context. I tested with Hibernate
> and Amber as persistence providers and in both cases, nothing was
> necessary. That was using Resin 3.1.5 and RESOURCE_LOCAL as transaction
> type, which means that the problem might be with the container managed
> Daniel López escribió:
>> AFAIK, using merge should not be necessary unless the entity has been
>> updated outside a "persistent context" and then needs to be synchronised
>> back with the DB contents. persist() is just for new entities so reading
>> the docs, updating an entity inside a persistent context should require
>> no action. Unless an exception is thrown, of course ;).
>> I'm going to do some tests...
>> Matt Johnston escribió:
>>> I think you will need to use either the persist() or merge() methods of
>>> the EntityManager in order to save your data to the database. In your
>>> case since you are updating an existing record, you will need to use:
>>> Riccardo Cohen wrote:
>>>> I used to play with entity ejb with resin 3.0 with no problem. Now in
>>>> 3.1.5 I have this code :
>>>> @PersistenceContext(name="public") private EntityManager m_manager;
>>>> public boolean set_homeinfo(int id_user,String title)
>>>> boolean success=false;
>>>> Query hqr=m_manager.createQuery("select h from homeinfo h where
>>>> List<homeinfo> hitems = (List<homeinfo>)hqr.getResultList();
>>>> if (hitems.size()==1)
>>>> homeinfo homeobj=hitems.get(0);
>>>> System.out.println("title was "+homeobj.getTitle());
>>>> The select works all right, but the "title" field is never modified. I
>>>> added finer info on sql to see database requests in log, and there is no
>>>> "update". Did I miss something ?
>>>> I looked at the resin amber tutorials, but there are only "select"
>>>> samples, I did not see "insert" and "update" samples... I remember
>>>> problems like this with 3.0 when the entity bean was reused, it was not
>>>> saved, but here it is not the case.
>>>> Thanks for any help.
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