On 31. 12. 21 16:38, Andy Bierman wrote:
On Fri, Dec 31, 2021 at 2:01 AM Ladislav Lhotka <ladislav.lho...@nic.cz <mailto:ladislav.lho...@nic.cz>> wrote:Carsten Bormann <c...@tzi.org <mailto:c...@tzi.org>> writes: > On 2021-12-30, at 13:29, tom petch <ie...@btconnect.com <mailto:ie...@btconnect.com>> wrote: >> >> when "../../../../../../nw:network-types/tet:te-topology/“ > > I’m probably showing my ignorance about YANG again, but what is the reason this is not phrased as > > when "./ancestor::nw:network-types/tet:te-topology/“ Yes, this would work, with a minor correction: when "./ancestor::node()/nw:network-types/tet:te-topology" This is not equivalent to the original expression.
It is not equivalent but will work fine in this case because there is only one ancestor having a 'nw:network-types' child. Unlike the absolute path, one is confined to the same 'nw:network' entry here.
It means slightly more work for an XPath processor but is IMO considerably more readable and less error-prone.
Lada
The ".." location step stands for parent::node(). The node match has to occur at a specific ancestor level. But "ancestor::node()" will match any ancestor node. Andy because 'nw:network-types' isn't an ancestor of the context node. Also, the initial './' isn't actually needed, hence when "ancestor::node()/nw:network-types/tet:te-topology" Lada > > ? > > Grüße, Carsten > > _______________________________________________ > netmod mailing list > netmod@ietf.org <mailto:netmod@ietf.org> > https://www.ietf.org/mailman/listinfo/netmod <https://www.ietf.org/mailman/listinfo/netmod>-- Ladislav LhotkaHead, CZ.NIC Labs PGP Key ID: 0xB8F92B08A9F76C67 _______________________________________________ netmod mailing list netmod@ietf.org <mailto:netmod@ietf.org> https://www.ietf.org/mailman/listinfo/netmod <https://www.ietf.org/mailman/listinfo/netmod> _______________________________________________ netmod mailing list netmod@ietf.org https://www.ietf.org/mailman/listinfo/netmod
-- Ladislav Lhotka Head, CZ.NIC Labs PGP Key ID: 0xB8F92B08A9F76C67 _______________________________________________ netmod mailing list netmod@ietf.org https://www.ietf.org/mailman/listinfo/netmod
