Re: [netmod] [Technical Errata Reported] RFC7950 (5157)

Martin Bjorklund <mbj@tail-f.com> Mon, 23 October 2017 08:36 UTC

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Date: Mon, 23 Oct 2017 10:35:13 +0200 (CEST)
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To: bclaise@cisco.com
Cc: warren@kumari.net, kwatsen@juniper.net, lberger@labn.net, andy@yumaworks.com, netmod@ietf.org
From: Martin Bjorklund <mbj@tail-f.com>
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Subject: Re: [netmod] [Technical Errata Reported] RFC7950 (5157)
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Benoit Claise <bclaise@cisco.com> wrote:
> Dear all,
> 
> Shall I validate this one?

No I don't think this is correct.  We choose a quoted string to be
able to correctly represent all YANG integer and decimal64 values.
Note that XPath doesn't have integers, just 64-bit floats.  This means
that not all 64-bit integers can be expressed as numbers in XPath.


/martin


> 
> Regards, Benoit
> > The following errata report has been submitted for RFC7950,
> > "The YANG 1.1 Data Modeling Language".
> >
> > --------------------------------------
> > You may review the report below and at:
> > http://www.rfc-editor.org/errata/eid5157
> >
> > --------------------------------------
> > Type: Technical
> > Reported by: Andy Bierman <andy@yumaworks.com>
> >
> > Section: 14
> >
> > Original Text
> > -------------
> >    key-predicate-expr  = node-identifier *WSP "=" *WSP quoted-string
> >
> > Corrected Text
> > --------------
> >    key-predicate-expr  = node-identifier *WSP "=" *WSP
> >          (quoted-string / integer-value / decimal-value)
> >
> > Notes
> > -----
> > An instance identifier is forced to specify every key value to be a
> > string
> > even though the YANG key leaf type could be a numeric type.
> > XPath does not require a quoted string here, just YANG.
> >
> > Old:  /top/list[idx="4"]
> > New: /top/list[idx=4]
> >
> > Instructions:
> > -------------
> > This erratum is currently posted as "Reported". If necessary, please
> > use "Reply All" to discuss whether it should be verified or
> > rejected. When a decision is reached, the verifying party
> > can log in to change the status and edit the report, if necessary.
> >
> > --------------------------------------
> > RFC7950 (draft-ietf-netmod-rfc6020bis-14)
> > --------------------------------------
> > Title               : The YANG 1.1 Data Modeling Language
> > Publication Date    : August 2016
> > Author(s)           : M. Bjorklund, Ed.
> > Category            : PROPOSED STANDARD
> > Source              : NETCONF Data Modeling Language
> > Area                : Operations and Management
> > Stream              : IETF
> > Verifying Party     : IESG
> > .
> >
>