[Kde-pim] iCalendar semantic

[Patrick Ohly]

On Mon, 2014-03-17 at 13:04 +0000, Sergio Martins wrote:
> On Monday, March 17, 2014 13:29:00 Patrick Ohly wrote:
> > Hello!
> > 
> > I've got a bug report
> > (https://bugs.freedesktop.org/show_bug.cgi?id=74342) and (now that I
> > started running and analyzing them myself) some failing tests around
> > iCalendar 2.0 semantics. Some of these have been known issues waiting
> > for some interested developer to deal with, but it seems to be worse
> > than I thought.
> > 
> > Anyway, the key question is: in the Akonadi architecture, which entity
> > is responsible for ensuring that a collection of calendar items meets
> > iCalendar 2.0 semantics? Is it something that resources do or is the
> > client of Akonadi responsible?
> > 
> > Specific cases that need to be handled:
> >       * Adding or updating items with some mandatory properties missing,
> >         like UID - this is the root problem of bug #74342.
> >       * Adding a new item with the same UID/RECURRENCE-ID combination as
> >         an already existing one - covered by testInsertTwice, fails with
> >         Akonadi.
> > 
> > If the user of Akonadi is responsible for ensuring unique UIDs, how can
> > this be done reliably, taking into account that multiple different
> > clients may be inserting the same item concurrently?
> > 
> > Bye, Patrick
> 
> Hi,
> 
> I don't think we have a central place for this, it's up to the resource to do 
> it.

At least the iCalendar file resource doesn't seem to do any of this. So
this is a bug in the resource?

> If you're using korganizer it will ignore invalid data that the resource 
> returns, and it will never send invalid data to the resource because the 
> client libs protect against that.

Which client lib? Are you talking about one item or the entire
collection?

>  Not sure about concurrency situation though.

I'll address that in my response to Christian.

Bye, Patrick

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