Hi Michal,
I've fixed this in the latest draft.
Thanks again for pointing this out.
Rob
On 26/01/2018 10:05, Michal Vaško wrote:
Hi Rob,
I have forgotten to mention that I have fixed it by modifying the leafref path
the exact same way you proposed, it works fine that way.
Regards,
Michal
On Friday, January 26, 2018 10:55 CET, Robert Wilton <[email protected]> wrote:
Hi Michal,
Thanks for raising this.
On 26/01/2018 09:14, Michal Vaško wrote:
Hello,
we have tried implementing the YANG module [email protected]
from draft-ietf-netconf-rfc7895 and have encountered a problem. I am not
completely certain that the issue is with the model and not our XPath
evaluator, but based on the definitions I have found I believe the model is
wrong.
module: ietf-yang-library
+--ro yang-library
+--ro module-set* [name]
+--ro module* [name]
+--ro name yang:yang-identifier
+--ro deviation* [module]
+--ro module -> ../../name
In the tree diagram (I have removed irrelevant parts) it can be seen that there is a "deviation" leafref that should point from one "module" list
instance to another identifying the deviation module. So, the supposed evaluation should take the following steps: we start with leaf "module" we take
".." path so we get the "deviation" list. Then we take another ".." and we end up with all the "module" list instances. Finally,
we try to find "name" leaf in all these instances of the "module" list.
However, our evaluator and some I have found online (all behaving according to XPath definition, I think) proceed differently. At the point
of going one step up (parent node) into what es expected to be all the "module" list instances, the context node actually becomes
only the *specific module list instance* we have started from, so when looking for the "name" leaf only the name of this list
instance is taken into consideration. Needless to say, the evaluation never finds a matching "name" leaf because
"module/name" and "module/deviation/module" should never match in one "module" list instance and so the
validation always fails.
It looks like the leafref should be "../../../module/name".
Does that fix the issue for you?
Thanks,
Rob
Kind regards,
Michal Vasko
_______________________________________________
Netconf mailing list
[email protected]
https://www.ietf.org/mailman/listinfo/netconf
.
.
_______________________________________________
netmod mailing list
[email protected]
https://www.ietf.org/mailman/listinfo/netmod
