[Kde-pim] Akonadi Synchronous Job Error

[Volker Krause]

On Friday 20 February 2009 17:04:20 Jason 'vanRijn' Kasper wrote:
> On Fri, Feb 20, 2009 at 7:23 AM, Volker Krause <vkrause at kde.org> wrote:
> > On Friday 20 February 2009 13:02:57 Douglas Harms wrote:
> > > I'm working on kpilot and have encountered a behavior problem in
> > > akonadi.  For various reasons there are times when we attempt to delete
> > > an akonadi item (calendar or todo) that doesn't exist.  job->exec()
> > > returns false (as it should).  When we process the next record (e.g.,
> > > delete a record that is in akonadi) job->exec() returns true (which it
> > > should) but it doesn't actually delete the item.  As you might imagine,
> > > this messes us up.
> > >
> > > We can easily solve this by not trying to delete an akonadi item when
> > > we know it's not there; however, we wanted to bring this up for
> > > discussion on this list to see if perhaps there is a larger bug in
> > > akonadi that should be addressed.
> >
> > Are you deleting within a transaction maybe? If there is an error within
> > a transaction, no change made within it will persist, like in database
> > systems.
> > If that should happen for usually harmless errors like deleting a
> > non-existing
> > object is a different question though
>
> I'm not honestly sure if what we're doing is within a transaction.I don't
> see anywhere that we're explicitly doing a
> beginTransaction()/endTransaction() or something simliar. We have commit
> methods in kpilot for each type of operation (create, update, delete) to
> push the temp changes we made during synchronization into Akonadi, and the
> code for each looks like this:

turns out this was indeed caused by a mis-use of transactions, but in the 
Akonadi code itself. Should be fixed in trunk now, I'll backport in a minute.

regards
Volker
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