Re: [netmod] schema mount open issue #1

[Ladislav Lhotka <[e-mail]>]

Lou Berger píše v Po 28. 08. 2017 v 09:40 -0400:
> Lada,
> 
> On 8/28/2017 9:30 AM, Ladislav Lhotka wrote:
> > > Can you please take a look at it and see if we have any other disconnects?
> > 
> > This is really scary. 
> 
> I agree!
> 
> > How can we expect poor data modellers to understand the
> > concept if we have such fundamental disconnects, after so many hours of
> > discussing it?
> 
> This highlights why getting the text in (any) document is so important,
> and why discussions shouldn't be viewed as being closed until the impact
> on the text is agreed to!

I think many people still don't make much distinction between schema mount
(manipulation of the schema) and data mount. I still believe we need to clearly
separate these two concepts, preferably using two different mechanisms.

Moreover, draft-clemm-netmod-mount-06 adds heavily to this confusion. I myself
feel dizzy when reading e.g. this:

     extension mountpoint {
       argument name;
       description
         "This YANG extension is used to mount data from another
          subtree in place of the node under which this YANG extension
          statement is used.
          ..."

See? The data has to be placed to a *data tree*, and the extension is used in
the *schema tree*, but the description talks about just one node.

> 
> Lou
> 
> PS is your view aligned with martin or our example?

If you mean shifting the XPath context node to the mount point instance, then
yes.

Lada

> 
> > Lada
> > 
-- 
Ladislav Lhotka
Head, CZ.NIC Labs
PGP Key ID: 0xB8F92B08A9F76C67