Re: SV: [phpGroupWare-developers] Nested db-objects

[Dave Hall]

On Thu, 2008-05-22 at 15:06 +0200, Sigurd Nes wrote:
> > From: Olivier Berger address@hidden
> > Sent: 2008-05-22 13:35:48 CEST
> > To: address@hidden
> > Subject: Re: [phpGroupWare-developers] Nested db-objects
> > 
> > Le mercredi 21 mai 2008 à 20:02 +0200, Sigurd Nes a écrit :
> > > Hi all,
> > > 
> > > I find it very useful to have the ability to have the choice of using 
> > > nested 
> > > db-objects.
> > > 
> > > Example:
> > > When integrating with external systems - it is very convenient to start a 
> > > transaction on system 1 - do some work (like sync) on system 2 - and if 
> > > things 
> > > went well do a commit on the result in system 1.
> > > 
> > 
> > Sure.
> > 
> > Are there any test cases to verify that such frameworks are working as
> > expected in phpgw ?
> 
> Her is one example on how I have used nested db-objects:
> I have a configurable hierarchy of locations (read: 
> estate/building/floor/room etc)
> Within each level (which is represented by a set of tables) one can have 
> custom fields of any type.
> This function allows you to delete the bottom level and cleaning out the 
> custom fields from the meta database in the process.
> 
> <code>
> function delete($id)
> {
>       $this->init_process();
>       $this->oProc->m_odb->transaction_begin();
>       $this->db->transaction_begin();

Wouldn't it be cleaner to have $this->oProc->m_odb as a reference
to $this->db which is a reference to $GLOBALS['phpgw']->db then you
only need to call transaction_begin() once and have only one transaction
running?

Cheers

Dave