Updates (was: Re: [ticker-dev] Presence specification draft 0.4.1)

[David Arnold]

-->"Martin" == Wanicki, Martin <Martin.Wanicki at Australia.Boeing.com> writes:

  Martin> In the ticker spec, the "REPLACEMENT" field indicates that
  Martin> the entire contents of a notification should be replaced, or
  Martin> the original notification is actually replaced by the new
  Martin> one, whichever way the result is the same the remaining
  Martin> notification ends up representing whatever notification that
  Martin> most recently had a replacement id that matched it To that
  Martin> end it is conceivable that the replacement function could be
  Martin> extended to perform an update, updating only existing
  Martin> fields.

  Martin> So I propose that it may be useful to add an 'UPDATES' field
  Martin> to the tickertape protocol to not replace a notification but
  Martin> to update it with only the changed/supplied fields.

the benefit of REPLACEMENT is that if you don't have a copy of the
original message, you can still display the new message with no loss
of functionality. for this reason, i prefer the current mechanism.




d