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Re: [netmod] evaluation of "when" under NMDA

Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Mon, 04 December 2017 20:01 UTC

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Date: Mon, 04 Dec 2017 21:00:19 +0100
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Ladislav Lhotka <lhotka@nic.cz>
Cc: NETMOD WG <netmod@ietf.org>
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Subject: Re: [netmod] evaluation of "when" under NMDA
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On Mon, Dec 04, 2017 at 07:09:51PM +0100, Ladislav Lhotka wrote:
> 
> Well, according to draft-ietf-netmod-revised-datastores-07:
> 
>    o  datastore schema: The combined set of schema nodes for all modules
>       supported by a particular datastore, taking into consideration any
>       deviations and enabled features for that datastore.
> 
> And "when" determines whether a given schema node is valid or
> not. So if a schema node is invalid in the schema of <operational>
> but valid in the schema of <intended>, then the former can hardly be
> a superset of the latter.

I do not follow your notion of 'schema node is valid or not'. Where is
this concept defined? I think RFC 7950 talks about validation of data
trees against a "schema". Perhaps there are places where the wording
is not clear enough? I know that there are places where the RFC 7950
text says just "node" without being explicit about the distinction
between schema node and corresponding data nodes. If this is an issue
here, we may consider posting erratas to clear things up.

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>

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