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Re: [netconf] Trouble with RFC 8040 (Restconf) fields Query Parameter

Henning Rogge <hrogge@gmail.com> Tue, 14 April 2020 16:03 UTC

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From: Henning Rogge <hrogge@gmail.com>
Date: Tue, 14 Apr 2020 18:02:32 +0200
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To: Kent Watsen <kent+ietf@watsen.net>
Cc: "netconf@ietf.org" <netconf@ietf.org>
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Subject: Re: [netconf] Trouble with RFC 8040 (Restconf) fields Query Parameter
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Hi,

my problem is how these "multi-parenthesis" expressions are meant to
be processed. Single parenthesis is easy to understand.

Does anyone has at least one example of such a (valid?) fields
expression and what it should do?

Henning Rogge

On Tue, Apr 14, 2020 at 4:28 PM Kent Watsen <kent+ietf@watsen.net> wrote:
>
> It seems like it would.  Have you tried an ABNF validator?
>
> Kent // contributor
>
>
> > On Apr 11, 2020, at 5:02 PM, Henning Rogge <hrogge@gmail.com> wrote:
> >
> > Anyone (Maybe the timing of the question just before the IETF was not
> > that good ^^) ?
> >
> > Henning Rogge?
> >
> > On Thu, Apr 2, 2020 at 2:18 PM Henning Rogge <hrogge@gmail.com> wrote:
> >>
> >> Hi,
> >>
> >> I am trying to implement a Restconf (RFC8040) compliant server in
> >> Python and having trouble interpreting the definition of the "fields"
> >> query parameter (Section 4.8.3).
> >>
> >> Does the "fields-expr" ABNF allow multiple nested bracket parts?
> >> e.g.:
> >>
> >> fields-expr = path ( path ; ( path ; path; ( path ; path ) ) )
> >>
> >> My guess is it allows to nest the "sub-selector" operator, but only
> >> the rightmost of a series of multiple selected nodes ( split by ";" )
> >> can be another sub-selector.
> >>
> >> Is this interpretation correct? What is the supposed semantic for this
> >> kind of query parameter?
> >>
> >> Henning Rogge
> >
> > _______________________________________________
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> > netconf@ietf.org
> > https://www.ietf.org/mailman/listinfo/netconf
>

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