Re: [netmod] WHEN statement within mandatory objects doesn't ensure presence of the mandatory object

[Michael Rehder <[e-mail]>]

I've read rfc6110 and I didn't see any mention of "WHEN" on the mandatory status (section 9.1.1 Optional and Mandatory Nodes doesn't list it which seems a bit odd to me).
The section on "WHEN" just mentions the xpath mapping, not anything about changing the mandatory status of the enclosing node.

I still think that the YANG RFC wording of "conditional" needs to indicate if the node is mandatory status is affected or not.
Note that rfc6060 "3.1 Mandatory Nodes" doesn't mention "WHEN" (it does mention presence).

Thanks
Mike
> -----Original Message-----
> From: Juergen Schoenwaelder [mailto:[e-mail]]
> Sent: Saturday, October 13, 2018 5:20 PM
> To: Michael Rehder <[e-mail]>
> Cc: [e-mail]
> Subject: Re: [netmod] WHEN statement within mandatory objects doesn't
> ensure presence of the mandatory object
> 
> On Fri, Oct 12, 2018 at 04:08:48PM +0000, Michael Rehder wrote:
> 
> > The mandatory statement in that case is ignored (I’ve pointed out the
> > RNG and Schematron lack of enforcement).  WHEN trumps the mandatory
> > status (via explicit mandatory or implicit mandatory via min-elements
> > 1)
> 
> Has the RNG and Schematron been obtained following RFC 6110? If so, this may
> be a problem with RFC 6110 but not with YANG itself. There are validators that
> do not use RNG or Schematron.
> 
> /js
> 
> --
> Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> Phone: [phone]         Campus Ring 1 | 28759 Bremen | Germany
> Fax:   [phone]         <https://www.jacobs-university.de/>
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