Re: [netmod] attributes in draft-lhotka-netmod-yang-json

[Martin Bjorklund <[e-mail]>]

Ladislav Lhotka <[e-mail]> wrote:
> Martin Bjorklund <[e-mail]> writes:
> 
> > Hi,
> >
> > Here's yet another attempt to handle attributes in JSON, without
> > changing the encoding for the case that there are no attributes
> > present.
> >
> > In all examples, the attributes "inactive" and "etag" are present.
> >
> > Attributes are encoded differently depending on the type of object:
> >
> >
> > leaf
> > ----
> >
> > Encode the attributes as a sibling to the leaf.
> >
> >
> >   leaf foo {
> >     type string;
> >   }
> >
> >   "foo": "some value";
> >   "@foo": {
> >      "inactive": true,
> >      "etag": "...";
> >    }
> >
> >
> > list instance
> > -------------
> >
> > Encode the attributes within the list instance.
> >
> >
> >   list bar {
> >     key name;
> >     leaf name {
> >       type string;
> >     }
> >     ...
> >   }
> >
> >   "bar": [
> >      {
> >         "@bar": {
> >            "inactive": true,
> >            "etag": "..."
> >          }
> >          "name": "instance name";
> >       }]
> >
> 
> This could be ambiguous:
> 
> list bar {
>   key name;
>   leaf name { ... }
>   leaf bar { ... }
> }
> 
> Then you don't know whether the attributes belong to the list entry
> or to the contained leaf.

Right. Then we use "@@bar" for the list / container attributes.


/martin



> 
> Lada 
> 
> >
> > container
> > ---------
> >
> > Encode the attributes within the container.
> >
> >
> >   container baz;
> >
> >   "baz": {
> >      "@baz": {
> >         "inactive": true,
> >         "etag": "..."
> >        }
> >   }
> >
> >
> > leaf-list
> > ---------
> >
> > Encode the attributes as a sibling to the leaf-list, with an array of
> > same length as the leaf-list itself.
> >
> >
> >   leaf-list buzz {
> >      type string;
> >   }
> >
> >   "buzz": [ "val1", "val2", "val3" ],
> >   "@buzz: [ null, 
> >             { "inactive": true,
> >               "etag": "..."
> >             }
> >             null]
> >
> >
> >
> > /martin
> 
> -- 
> Ladislav Lhotka, CZ.NIC Labs
> PGP Key ID: E74E8C0C
>