I prefer choice since a choice says clearly upfront that what follows
are N alternatives. With when statements, I have to keep all the when
statements in my mind to derive the conclusion that the model defines
alternatives. And the transport leaf in your when construction is
redundant.
/js
On Tue, Apr 02, 2019 at 01:13:52AM +0000, Qin Wu wrote:
> Hi, Folks:
> Choice case seems interchangeable with Container+when, here is the example of
> Choice case
> container system {
> description
> "Contains various system parameters.";
> choice services {
> description
> "Configure externally available services.";
> case ssh {
> description
> "SSH service-specific configuration.";
> // more leafs, containers, and stuff here...
> }
> case tls {
> description
> "TLS service-specific configuration.";
> // more leafs, containers, and stuff here...
> }
> }
> }
> I think it can be replaced with container+when representation as follows:
> container system {
> description
> "Contains various system parameters.";
> container services {
> description
> "Configure externally available services.";
> leaf transport {
> enum ssh {
> description
> "ssh";
> }
> enum tls {
> description
> "tls";
> }
> }
> container "ssh" {
> when "../transport=ssh" {
> description
> "active only when the transport is ssh";
> }
> description
> "SSH service-specific configuration.";
> // more leafs, containers, and stuff here...
> }
> container "tls" {
> when "../transport=tls" {
> description
> "active only when the transport is tls";
> }
> description
> "TLS service-specific configuration.";
> // more leafs, containers, and stuff here...
> }
> }
> }
> However I didn't see any guidance on when to use Choice case or when to use
> Container+when?
> Any thought about this?
>
> -Qin
> _______________________________________________
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> netmod@ietf.org
> https://www.ietf.org/mailman/listinfo/netmod
--
Juergen Schoenwaelder Jacobs University Bremen gGmbH
Phone: +49 421 200 3587 Campus Ring 1 | 28759 Bremen | Germany
Fax: +49 421 200 3103 <https://www.jacobs-university.de/>
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