Re: [netmod] Clarification needed for YANG 1.1 XPATH context

Martin Bjorklund <mbj@tail-f.com> Thu, 25 February 2016 15:16 UTC

Date: Thu, 25 Feb 2016 16:16:59 +0100
Message-Id: <20160225.161659.2204602310947308417.mbj@tail-f.com>
To: wivory@Brocade.com
From: Martin Bjorklund <mbj@tail-f.com>
In-Reply-To: <f790c7e329684d78bec27a1bfe150d6c@EMEAWP-EXMB12.corp.brocade.com>
References: <f790c7e329684d78bec27a1bfe150d6c@EMEAWP-EXMB12.corp.brocade.com>
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Subject: Re: [netmod] Clarification needed for YANG 1.1 XPATH context
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William Ivory <wivory@Brocade.com> wrote:
> Hi,
> 
> I'm looking for clarification on the meaning of the following
> paragraph in section 6.4.1 (XPATH context) in RFC6020bis:
> 
>    'If a node that exists in the accessible tree has a non-presence
>    container as a child, then the non-presence container also exists in
>    the tree.'
> 
> It's unclear to me what this is trying to say, and why - for example,
> does this mean that I need to validate any 'must' and 'when'
> statements on the child container even when nothing within that child
> container is configured?

must expressions are always evaluated if the node where the must
expression is defined exists, regardless of the number of children
this node has.


/martin

[netmod] Clarification needed for YANG 1.1 XPATH … William Ivory
Re: [netmod] Clarification needed for YANG 1.1 XP… Martin Bjorklund
Re: [netmod] Clarification needed for YANG 1.1 XP… William Ivory
Re: [netmod] Clarification needed for YANG 1.1 XP… Martin Bjorklund
Re: [netmod] Clarification needed for YANG 1.1 XP… William Ivory
Re: [netmod] Clarification needed for YANG 1.1 XP… Radek Krejčí
Re: [netmod] [yang-doctors] Clarification needed … Ladislav Lhotka