KEP2: Modification of datetime type, introduction of 'tz' sub-tag (wiki revision 10645 of 2010-11-19)
Georg C. F. Greve
greve at kolabsys.com
Fri Dec 10 15:09:04 CET 2010
Allow me a quick comment on two general points:
Firstly, the Kolab Groupware Solution consists of various components on the
server as well as the various clients. In order to form a consistent user
experience, the architecture needs to be consistent overall, which means there
will be implications for client-side architecture from the overall picture,
sometimes down to the level of user-interaction.
This is what the documentation should ensure. We know it did so imperfectly in
the past, and you seemed to welcome  more comprehensive documentation
before. To me this still seems like the right approach, but it necessarily
means decisions will be made that have some bearing on client architecture.
Secondly, it seems more sensible to discuss the current draft of a document
instead of what has already been deprecated and exists primarily for
So I'll respond to your issues as far as they pertain to the current draft.
The primary issue for you now seems to be that clients ought to be able to
parse RFC3339, which is something that was introduced in part also because I
remembered you making the point several times that clients ought to be liberal
when reading datetime strings.
In fact you said before RFC3339 reading was explicitly okay, but that you
wanted the strings to be written strictly Zulu.  Because you were feeling
so strongly about this, the latest draft specifies exactly that strict writing
of datetime objects in Zulu time.
The other issue appears to be about how to formulate where such strict writing
should take place. I'm fine with your proposal of saying in KEP2 that this
should be done for all objects.
When we introduce new object types, this will be a sane default, and one that
we can discuss deviating from if and when it makes sense, e.g. an object
requiring the higher precision.
Georg C. F. Greve
Chief Executive Officer
Kolab Systems AG
e: greve at kolabsys.com
t: +41 78 904 43 33
pgp: 86574ACA Georg C. F. Greve
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