Re: [YANG] keyref

On Tue, Jan 22, 2008 at 10:09:16AM +0100, Martin Bjorklund wrote:
> Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> wrote:
> > On Tue, Jan 22, 2008 at 09:44:30AM +0100, Martin Bjorklund wrote:
> > 
> > > That's why we don't want to allow keyrefs from config to non-config.
> > > 
> > > Maybe this is a use case that we want to support as well.  But I don't
> > > see the difference between such a ref and a InterfaceIndex type
> > > solution.
> > 
> > Well, the InterfaceIndex type just says "the value identifies an
> > interface" - no more no less. The keyref is much more ambitiuous.
> > Despite the fact that it is only usable for keys, your aim is to bind
> > things together such that value changes automatically propagate.
> 
> No, no automatic propagation.
> 
> See
> http://www.yang-central.org/twiki/bin/view/Main/YangExamplesExecdNtp
> for a YANG example.  The idea in this example is that there is a list
> of keys and a list of servers.  Each server uses exactly one key, and
> this is done through a keyref.  When you try to set server/key, it
> will only accept the name of an existing key.  If you try to remove
> the key, the config will not validate.

But if I change the value of key.name of a key referenced by say
requestkey, does the value of requestkey change as well?

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>

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