[Kolab-devel] Outlook and Kolab3 Recurrence Monthly and Yearly

[Christian Mollekopf]

On Wednesday 24 April 2013 10.49:41 Shawn Walker wrote:
> I found out that the Kolab3 recurrence monthly you can setup a recurring
> monthly on multiple day of the month, such as pick any days of the month
> to be part of the recurrence.
> 
> So, you can say "Repeat monthly every # month(s) on Each [1...31]".
> Outlook does not have any concept of recurring which multiple days of
> the month to recur on, just one of the day on the month.  I have
> provided two screenshots for monthly options.
> 
> This is also an issue with yearly, you can pick January, May, July,
> October and December to do a yearly recurrence on. In Outlook, you can
> only pick on of the months to have an yearly recurring event.  I have
> also provided two screenshots for yearly options.
> 
> I'm not sure how to go about mapping Kolab3 monthly/yearly on days to
> Outlook.

Hi Shawn,

That seems indeed to be a limitation in the support of the iCal standard from 
Outlook.

You could expand any such recurrence to multiple recurrences, in case that 
would help and Outlook would support it. So you would create one monthly 
recurrence-rule for every day on which the event recurs monthly. Of course 
that would imply that you collapse such recurrences again when writing it back 
to the server.

Alternatively I'd suggest to just preserve the recurrence in full detail (i.e. 
using custom properties), so the recurrence is only overwritten if it was 
actually modified. Depending on the facilities Outlook provides it could be 
difficult to identify when the recurrence has been modified though.

Worst case you'll loose part of the recurrence whenever the event get's 
modified, not much else you can do about it I guess.

Cheers,
Christian
-- 
Christian Mollekopf
Software Engineer

Kolab Systems AG
Zürich, Switzerland

e: mollekopf at kolabsys.com
w: http://kolabsys.com

pgp: EA657400 Christian Mollekopf
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