W3C home > Mailing lists > Public > public-linked-json@w3.org > July 2016

Re: JSON-LD & nested structure

From: Håvard Mikkelsen Ottestad <haavard.ottestad@acando.no>
Date: Thu, 28 Jul 2016 21:06:24 +0000
To: David Booth <david@dbooth.org>, "public-linked-json@w3.org" <public-linked-json@w3.org>
Message-ID: <HE1PR02MB138645C95E07F0423C7BE6FF9C000@HE1PR02MB1386.eurprd02.prod.outlook.com>
How about this frame:


{
  "@context":
    {
      "rdfs": "http://www.w3.org/2000/01/rdf-schema#"
    },

    "http://www.myresource.com/ontology/1.0#talksAbout": {
          "@embed":true
   }
}



Regards,

Håvard Ottestad

________________________________
From: David Booth <david@dbooth.org>
Sent: Thursday, July 28, 2016 8:00:11 PM
To: public-linked-json@w3.org
Subject: Re: JSON-LD & nested structure

I hope others who are more familiar with JSON-LD framing will answer
your question, but . . .

On 07/28/2016 01:39 PM, Aymeric Brisse wrote:
> Hello,
>
> I am currently working on a API that would return some JSON-LD and face
> some problematic. I would like to know, when transforming a graph to
> JSON-LD, how to be able to avoid the @graph object generation and having
> a nested hash instead (I assume that I have a root element).
>
> The idea is to have a structure more /traditional/ for the developers
> that want to parse it as a simple JSON object.
>
> Let's say I have to following graph (rdf/xml for readability):

Funny.  I think rdf/xml is the *least* readable of RDF serializations!

>
> <?xml version='1.0' encoding='utf-8' ?>
> <rdf:RDF xmlns:ns0='http://www.myresource.com/ontology/1.0#'
> xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
> xmlns:rdfs='http://www.w3.org/2000/01/rdf-schema#'>
>   <rdf:Description rdf:about='http://www.myresource/uuid'>
>     <ns0:talksAbout>
>       <rdf:Description rdf:about='http://rdf.freebase.com/ns/m.018w8'>
>         <rdfs:label xml:lang='en'>Basketball</rdfs:label>
>       </rdf:Description>
>     </ns0:talksAbout>
>   </rdf:Description>
> </rdf:RDF>

Here is the same thing in turtle, for the benefit of other readers:

@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix ns0: <http://www.myresource.com/ontology/1.0#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

<http://rdf.freebase.com/ns/m.018w8>
     rdfs:label "Basketball"@en .

<http://www.myresource/uuid>
     ns0:talksAbout <http://rdf.freebase.com/ns/m.018w8> .

Thanks,
David Booth

>
> Basically when I use a standard serializer like the jsonld gem in Ruby
> to serialize it in JSON-LD I obtain (reproducible on
> http://rdf.greggkellogg.net/distiller)
>
> {
>   "@context": {
>     "rdfs": "http://www.w3.org/2000/01/rdf-schema#"
>   },
>   "@graph": [
>     {
>       "@id": "http://rdf.freebase.com/ns/m.018w8",
>       "rdfs:label": [
>         {
>           "@value": "Basketball",
>           "@language": "en"
>         }
>       ]
>     },
>     {
>       "@id": "http://www.myresource/uuid",
>       "http://www.myresource.com/ontology/1.0#talksAbout": [
>         {
>           "@id": "http://rdf.freebase.com/ns/m.018w8"
>         }
>       ]
>     }
>   ]
> }
>
> But I would like to obtain:
>
> {
>   "@context": {
>     "rdfs": "http://www.w3.org/2000/01/rdf-schema#"
>   },
>   "@id": "http://www.myresource/uuid",
>   "http://www.myresource.com/ontology/1.0#talksAbout": [
>       {
>          "@id": "http://rdf.freebase.com/ns/m.018w8",
>          "rdfs:label": [
>            {
>              "@value": "Basketball",
>              "@language": "en"
>            }
>          ]
>      }
>   ]
> }
>
> Is there any option or way to do it?
>
> Thanks!
Received on Thursday, 28 July 2016 21:06:58 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 16:18:48 UTC