Re: [netmod] Adding a pre-existing leaf into a new 'choice' - NBC change?
Martin Bjorklund <mbj@tail-f.com> Fri, 23 November 2018 10:05 UTC
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Date: Fri, 23 Nov 2018 11:05:48 +0100
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From: Martin Bjorklund <mbj@tail-f.com>
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Subject: Re: [netmod] Adding a pre-existing leaf into a new 'choice' - NBC change?
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Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> wrote: > On Fri, Nov 23, 2018 at 10:22:11AM +0100, Ladislav Lhotka wrote: > > Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> writes: > > > > > On Thu, Nov 22, 2018 at 03:00:27PM +0100, Martin Bjorklund wrote: > > >> Andy Bierman <andy@yumaworks.com> wrote: > > >> > > > >> > 9.9 <https://tools.ietf.org/html/rfc7950#section-9.9>. The leafref > > >> > Built-In Type > > >> > > > >> > The leafref built-in type is restricted to the value space of some > > >> > leaf or leaf-list node in the schema tree and optionally further > > >> > restricted by corresponding instance nodes in the data tree. The > > >> > "path" substatement (Section 9.9.2 > > >> > <https://tools.ietf.org/html/rfc7950#section-9.9.2>) is used to > > >> > identify the referred > > >> > leaf or leaf-list node in the schema tree. The value space of the > > >> > referring node is the value space of the referred node. > > >> > > >> Yes, it should be "data tree" in both occurrences. > > > > > > Time for an errata? > > > > Here is the old discussion thread: > > > > https://www.ietf.org/mail-archive/web/netmod/current/msg15979.html > > > > Everything relevant had been extensively discussed in it, and I am > > sceptical that we can come up with anything significantly better - it > > will only be more (or different) hand-waving. The problem is inherent in > > the leafref design introduced in YANG 1.1. It won't go away no matter > > how much we paper over it. > > > > So you think the use of 'schema tree' in the text quoted above (is > used to identify the referred leaf or leaf-list node in the schema > tree) is correct?? > > I do not want to discuss whether you like the design of leafrefs or > not here - at this time we should focus on whether the text is correct > or not given the design we have. So again, you think that 'schema > tree' is correct in the statement? After reading the quoted thread and thinking some more, I think the text in 9.9 is in fact correct. As Lada wrote in that thread: 2. It [path] also implicitly refers to a leaf node in the schema [...] The problem is that this "implicit reference" isn't defined. 9.9 talks about reference to a schema node, and 9.9.2 talks about the data tree, but there is no text that ties these together. /martin
- Re: [netmod] Adding a pre-existing leaf into a ne… Martin Bjorklund
- [netmod] Adding a pre-existing leaf into a new 'c… Sterne, Jason (Nokia - CA/Ottawa)
- Re: [netmod] Adding a pre-existing leaf into a ne… Sterne, Jason (Nokia - CA/Ottawa)
- Re: [netmod] Adding a pre-existing leaf into a ne… Andy Bierman
- Re: [netmod] Adding a pre-existing leaf into a ne… Martin Bjorklund
- Re: [netmod] Adding a pre-existing leaf into a ne… Sterne, Jason (Nokia - CA/Ottawa)
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Martin Bjorklund
- Re: [netmod] Adding a pre-existing leaf into a ne… Martin Bjorklund
- Re: [netmod] Adding a pre-existing leaf into a ne… Andy Bierman
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Martin Bjorklund
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Martin Bjorklund
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Sterne, Jason (Nokia - CA/Ottawa)
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Per Hedeland
- Re: [netmod] Adding a pre-existing leaf into a ne… Andy Bierman
- Re: [netmod] Adding a pre-existing leaf into a ne… Juergen Schoenwaelder
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Juergen Schoenwaelder
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Martin Bjorklund
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Juergen Schoenwaelder
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Juergen Schoenwaelder
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Robert Wilton
- Re: [netmod] Adding a pre-existing leaf into a ne… Martin Bjorklund
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka
- Re: [netmod] Adding a pre-existing leaf into a ne… Juergen Schoenwaelder
- Re: [netmod] Adding a pre-existing leaf into a ne… Andy Bierman
- Re: [netmod] Adding a pre-existing leaf into a ne… Juergen Schoenwaelder
- Re: [netmod] Adding a pre-existing leaf into a ne… Andy Bierman
- Re: [netmod] Adding a pre-existing leaf into a ne… Ladislav Lhotka