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Re: [Json] Schema Requirements (Was: Re: Nudging the English-language vs. formalisms discussion forward)

Nico Williams <nico@cryptonector.com> Thu, 20 February 2014 17:52 UTC

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Date: Thu, 20 Feb 2014 11:52:03 -0600
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From: Nico Williams <nico@cryptonector.com>
To: Phillip Hallam-Baker <hallam@gmail.com>
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Archived-At: http://mailarchive.ietf.org/arch/msg/json/OE0wZ1UX4kLFqzpc3WmDZDuGnhE
Cc: Carsten Bormann <cabo@tzi.org>, Pete Cordell <petejson@codalogic.com>, JSON WG <json@ietf.org>
Subject: Re: [Json] Schema Requirements (Was: Re: Nudging the English-language vs. formalisms discussion forward)
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On Thu, Feb 20, 2014 at 11:23 AM, Phillip Hallam-Baker <hallam@gmail.com> wrote:
> On Thu, Feb 20, 2014 at 11:55 AM, Pete Cordell <petejson@codalogic.com>
> wrote:
>> My position is that, having recognised that Dates represent a case where
>> microformats are useful, perhaps we should not assume that these are the
>> only cases.  IP addresses?  Crypto OIDs?  Dates on Mars?
>
> All I am saying is that it is a slippery slope.
>
> There are two ways to go down a slippery slope, not at all or on skis.

This sounds to me like an argument about how to handle extensibility.
We should first consider whether we want schema extensibility and if
we do, whether we want it to be explicit (like the ... extensibility
marker in ASN.1) or implicit (like implicit ... ASN.1 extensibility
markers in every type).

My position: we should want extensibility, and it should be explicit
(because having every type be implicitly extensible is a PITA for code
generation).

Nico
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