[Zope] USE TRansaction : _begin()

[Chris McDonough]

Hi Michel,

Are Zope's transaction facilities not enough for you?  Zope commits or rolls
back all data stores at the end of a request... the Sybase adapter does this
automatically.

----- Original Message -----
From: "Michel" <michel@titus.u-strasbg.fr>
To: <zope@zope.org>
Sent: Wednesday, May 02, 2001 9:48 AM
Subject: [Zope] USE TRansaction : _begin()


>
> Hello,
>
> I'm a young user of zope.
> I use Zope with SYBASE (we created a Product SybaseDAv2 and it seems to
> work perfectly).
> Zope created only one connection to sybase and all my Zope users used this
> connection to send SQL requests.
>
> Now I would like to modify some tables from my database. I need to use
> transaction.
> I unchecked "use transaction" into properties of my SybaseDAV2.
> I created 3 DTML Methods (begin, commit and rollback) which call a ZSQL
> Method (begintran, commitran,rollbacktran) but it doesn't work because the
> first user doesn't avoid the second user to modify the same data.
>
> By reading documentation, I found there are these methods implemeted with
> my SybaseDAv2 product :
>  _begin(self)
>  _finish(self)
>  _abort(self)
>
> But how can I call them ?
> I tried :
>
> <dtml-call SybDA._begin()>
> <dtml-call expr="SybDA._begin()">
> <dtml-call expr="TM._begin()">
> and a lot of other possibilities .... but it doesn't work!!
>
> SybDA is the name of SybaseDAv2 product in my example.
>
> Maybe this will not work too. So How can I use transaction into Zope ?
> Could you send me an example ?
>
> Thank you very much for your help
>
> OFFNER Michel
> IGBMC
> France
>
>
>
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