Re: [Json] JSON Schema Language: extensibility and unspecified properties

Carsten Bormann <cabo@tzi.org> Sat, 10 August 2019 06:23 UTC

Return-Path: <cabo@tzi.org>
X-Original-To: json@ietfa.amsl.com
Delivered-To: json@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 883E9120108 for <json@ietfa.amsl.com>; Fri, 9 Aug 2019 23:23:37 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -4.198
X-Spam-Level:
X-Spam-Status: No, score=-4.198 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_NONE=0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XNU4SCxIBJnw for <json@ietfa.amsl.com>; Fri, 9 Aug 2019 23:23:35 -0700 (PDT)
Received: from gabriel-vm-2.zfn.uni-bremen.de (gabriel-vm-2.zfn.uni-bremen.de [134.102.50.17]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id B5F861200E5 for <json@ietf.org>; Fri, 9 Aug 2019 23:23:35 -0700 (PDT)
Received: from client-0171.vpn.uni-bremen.de (client-0171.vpn.uni-bremen.de [134.102.107.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by gabriel-vm-2.zfn.uni-bremen.de (Postfix) with ESMTPSA id 465BrP6gZFz10gG; Sat, 10 Aug 2019 08:23:33 +0200 (CEST)
Content-Type: text/plain; charset="utf-8"
Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\))
From: Carsten Bormann <cabo@tzi.org>
In-Reply-To: <CAJK=1RhXp85cz-pOAQPw2JM=CYHgGSygj4Hw0spht56jbzQE2g@mail.gmail.com>
Date: Sat, 10 Aug 2019 08:23:33 +0200
Cc: JSON WG <json@ietf.org>
X-Mao-Original-Outgoing-Id: 587111010.5112-121e593ee9eae9633474c25cd656f458
Content-Transfer-Encoding: quoted-printable
Message-Id: <53094378-B559-49E1-B42B-54FBA8BC35AA@tzi.org>
References: <CAJK=1RhXp85cz-pOAQPw2JM=CYHgGSygj4Hw0spht56jbzQE2g@mail.gmail.com>
To: Ulysse Carion <ulysse@segment.com>
X-Mailer: Apple Mail (2.3445.9.1)
Archived-At: <https://mailarchive.ietf.org/arch/msg/json/YllL6HfQlLttuVG4Uz7PAD1Gl2A>
Subject: Re: [Json] JSON Schema Language: extensibility and unspecified properties
X-BeenThere: json@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "JavaScript Object Notation \(JSON\) WG mailing list" <json.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/json>, <mailto:json-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/json/>
List-Post: <mailto:json@ietf.org>
List-Help: <mailto:json-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/json>, <mailto:json-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 10 Aug 2019 06:23:38 -0000

Examples are good:

   This schema […] limits “generated” and
   "expires" to timestamps less than 2^32 seconds after January 1, 1970
   00:00 UTC. 

This is a nice demonstration that it was a mistake to remove uint53.

(Note that on 32-bit systems time_t is an int32.  But you definitely don’t want that restriction; 2038 is coming too close now.  Uint32 is completely arbitrary and wrong in many ways.)

Grüße, Carsten