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Re: [calsify] Warren Kumari's No Objection on draft-ietf-calext-jscalendar-30: (with COMMENT)

Neil Jenkins <neilj@fastmailteam.com> Wed, 30 September 2020 03:46 UTC

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Date: Wed, 30 Sep 2020 13:36:33 +1000
From: Neil Jenkins <neilj@fastmailteam.com>
To: Warren Kumari <warren@kumari.net>, iesg <iesg@ietf.org>
Cc: draft-ietf-calext-jscalendar@ietf.org, calext-chairs@ietf.org, calsify@ietf.org, Daniel Migault <daniel.migault@ericsson.com>, daniel.migaultf@ericsson.com
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Subject: Re: [calsify] Warren Kumari's No Objection on draft-ietf-calext-jscalendar-30: (with COMMENT)
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Hi Warren,

> I think that it would be useful to have some more discussions around why / when
> PatchObjects should be used - they seem to add significant complexity to the
> design, and I'm really not convinced that the complexity outweighs the benefit;
> I'm guessing that I'm simply not fully understanding their utility. 

There are two primary benefits:
 1. Significantly reducing file size and duplicated content. For example, if one person is not going to a particular instance of a regularly scheduled event, in iCalendar you would have to duplicate the entire event in the override. In JSCalendar this is a small patch to show the difference.
 2. Better preservation of semantic intent: if a user changes the time of a single occurrence in an event series, only this property is overridden so if you change (for example) the location of the master event, the occurrence will automatically still inherit this.
Cheers,
Neil.

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