Re: Reference @context via URL with something with type @id

Ah. I've tried a number of variants with no joy.

I've changed this to Node JS for easier testing. After I add the
definitions to the @context in "iot.jsonld", the issue seems to be with how
@vocab is used.

Just to spell it out, the only difference between the two examples is I
expanded out "model" to "https://iotdb.org/pub/iot#model", which if I
understand this correctly should be happening because of the @vocab

This does not work

var doc = {

  "@context": [

    "https://iotdb.org/pub/iot",

    {

        "@vocab": "https://iotdb.org/pub/iot#"

    }

  ],

  "@id":
"/api/things/urn:iotdb:thing:REST:20b2c3ca712e8b0031debf3453cc75d1:rest-color-light"
,

  "model":
"/api/things/urn:iotdb:thing:REST:20b2c3ca712e8b0031debf3453cc75d1:rest-color-light/model"

}


jsonld = require('jsonld')

jsonld.expand(doc, function(err, expanded) {

    console.log(JSON.stringify(expanded, null, 2));

});


This does

var doc = {

  "@context": [

    "https://iotdb.org/pub/iot",

    {

        "@vocab": "https://iotdb.org/pub/iot#"

    }

  ],

  "@id":
"/api/things/urn:iotdb:thing:REST:20b2c3ca712e8b0031debf3453cc75d1:rest-color-light"
,

  "https://iotdb.org/pub/iot#model":
"/api/things/urn:iotdb:thing:REST:20b2c3ca712e8b0031debf3453cc75d1:rest-color-light/model"

}



D.

On Mon, Jun 8, 2015 at 6:31 PM, David I. Lehn <dil@lehn.org> wrote:

> On Mon, Jun 8, 2015 at 6:08 PM, David Janes <davidjanes@davidjanes.com>
> wrote:
> > Yes - live. It's https://iotdb.org/pub/iot#model expanded.
> >
> > D.
> >
> > On Mon, Jun 8, 2015 at 5:42 PM, David I. Lehn <dil@lehn.org> wrote:
> >>
> >> On Mon, Jun 8, 2015 at 4:11 PM, David Janes <davidjanes@davidjanes.com>
> >> wrote:
> >> > ...
> >> > BUT the fact that
> >> >
> >> > "model": { "@type": "@id" }
> >> >
> >> >  is _already_ defined in "https://iotdb.org/pub/iot" (go look at
> >> > "https://iotdb.org/pub/iot.jsonld). So my understanding is we
> shouldn't
> >> > have
> >> > to explicitly spell that out here. But when I do:
> >> >
> >>
> >> I don't see "model" in the context at that URL.  Is the live site
> >> up-to-date?
> >>
>
> https://iotdb.org/pub/iot.jsonld has this @context:
> {
>   "@context": {
>     "iot": "https://iotdb.org/pub/iot#",
>     "iot-attribute": "https://iotdb.org/pub/iot-attribute#",
>     "iot-facet": "https://iotdb.org/pub/iot-facet#",
>     "iot-unit": "https://iotdb.org/pub/iot-unit#",
>     "iot:cf": {
>       "@type": "@id"
>     },
>     "rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
>     "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
>     "schema": "https://schema.org/",
>     "xs": "http://www.w3.org/2001/XMLSchema/#"
>   },
>   ...
> }
>
> A JSON-LD processor will only look at the @context data not other
> vocabulary data.  iot:model is described later in the doc but that
> won't be used during processing.  Adding '"model": { "@type": "@id" }'
> (and anything else similar) to the @context should do what you want.
>
> -dave
>