[SqueakDBX] Should "GlorpSession>>register:" work?

[Diogenes Moreira]

Well, sorry, for the previous mail, because i was answer from my cel phone..

The problem is that:

When you works with a proxy, the proxy collaborators isn`t in the proxy..
the collaborators are in the ObjectTransatcion.. in the UnitOfwork in the
Session. And the RealObject Structure and changes is in Mementos dictionary
in  ObjectTransatcion.
In Addition The Proxies has attached the Session..

Yes, you right.. in you previous mail..

but for reattaching you need copy the mementos and proxies collaborators
from ObjectTransaction to new Session...
and change the session from all proxies..

ufff.. too much work.. :) ..

i don't kwon how much cost for refresh object (with the unnecessary DB
Read), but in the most of case, is cheaper use the refresh method or
maintain live the GlorpSession.

if you want solve this problem.. be my guest.. but i suggest, wait for new
GlorpDBX  version (coming soon) and  write first to Alan Knight in core
glorp list.. He can give better support than me.

Best
D.

On Fri, May 20, 2011 at 11:00 AM, <diogenes.moreira at gmail.com> wrote:

> You must use GlorpSession>>refresh: anObject to attach anObject to new
> Session
>
> Best.
> D
> Enviado desde mi BlackBerry® de Claro Argentina
>
> -----Original Message-----
> From: Panu Suominen <panu.j.m.suominen at gmail.com>
> Sender: squeakdbx-bounces at lists.squeakfoundation.org
> Date: Fri, 20 May 2011 10:51:38
> To: The complete and open-source solution to relational database access<
> squeakdbx at lists.squeakfoundation.org>
> Reply-To: panu.suominen at iki.fi,
>        The complete and open-source solution to relational database access
>        <squeakdbx at lists.squeakfoundation.org>
> Subject: [SqueakDBX] Should "GlorpSession>>register:" work?
>
> We have problem with reattaching objects to new session.
>
> Following code throws exception telling that connection is not open.
> |person|
> KLDatabase withSession: [:s|
>        person := s readOneOf: KLPerson where: [:p| p id = 6127].
> ].
>
> KLDatabase withSession: [:s|
>        s inUnitOfWorkDo: [
>                self halt.
>                s register: person.
>                Transcript show: person parameters.
>        ]
> ].
>
> The problem seems to be that "GlorpSession>>register:" does not check
> if there is an Glorp proxy inside the object being registered.
> Tutorial (http://www.eli.sdsu.edu/SmalltalkDocs/GlorpTutorial.pdf)
> states that it should reattach any nested objects (proxies) too but it
> does not.
>
> Is this known problem or am I doing something wrong? I can try to fix
> this if this is an actual bug. Of course using refresh:
> one can avoid this problem but it causes unnecessary database reads to
> occur.
>
>
> --
> Panu
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