Re: Use of full URI for rdf:type instead of @type

For sake of completeness here is another example of the JSON-LD tree using
"@type" [4] working with the first frame [2]:
http://json-ld.org/playground/index.html#startTab=tab-framed&json-ld=https%3A%2F%2Frawgit.com%2Fjaw111%2Fbbd1b00d656045ba8a2c%2Fraw%2Ftree2.jsonld&frame=https%3A%2F%2Frawgit.com%2Fjaw111%2Fbbd1b00d656045ba8a2c%2Fraw%2Fframe1.jsonld&context=%7B%7D

But same input does not get along with second frame [3]:
http://json-ld.org/playground/index.html#startTab=tab-framed&json-ld=https%3A%2F%2Frawgit.com%2Fjaw111%2Fbbd1b00d656045ba8a2c%2Fraw%2Ftree2.jsonld&frame=https%3A%2F%2Frawgit.com%2Fjaw111%2Fbbd1b00d656045ba8a2c%2Fraw%2Fframe2.jsonld&context=%7B%7D

> On May 9, 2014 at 4:27 PM "john.walker" <john.walker@semaku.com> wrote:
>
>
> Hi There,
> 
> I have a question about use of rdf:type in JSON-LD.
> 
> Take for example a simple SKOS tree loaded [1] to the playground:
> http://json-ld.org/playground/index.html#json-ld=https%3A%2F%2Frawgit.com%2Fjaw111%2Fbbd1b00d656045ba8a2c%2Fraw%2Ftree.jsonld
> 
> All looks good.
> 
> Now I want to apply a JSON-LD frame [2] to this:
> http://json-ld.org/playground/index.html#startTab=tab-framed&json-ld=https%3A%2F%2Frawgit.com%2Fjaw111%2Fbbd1b00d656045ba8a2c%2Fraw%2Ftree.jsonld&frame=https%3A%2F%2Frawgit.com%2Fjaw111%2Fbbd1b00d656045ba8a2c%2Fraw%2Fframe1.jsonld
>
> In the result there is no content in the "@graph".
>
> It seems that this is due to the use of "@type" in the JSON-LD frame, whereas
> the JSON-LD input uses "http://www.w3.org/1999/02/22-rdf-syntax-ns#type".
>
> Note that the input document is being generated from a SPARQL query, so I'm
> not
> in control of how it is formed, it's just a simple serialization of the
> triples.
>
> So a triple in question looks like:
>
> {
>   "@id": "http://example.com/conceptSchemes/myTree",
>   "http://www.w3.org/1999/02/22-rdf-syntax-ns#type": {
>     "@id": "http://www.w3.org/2004/02/skos/core#ConceptScheme"
>   }
> }
>
> I would have thought the processor would somehow know that "@type" and
> "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" are equivalent, but it seems
> not.
>
> If I modify the frame to use the full URI [3], it works as expected:
> http://json-ld.org/playground/index.html#startTab=tab-framed&json-ld=https%3A%2F%2Frawgit.com%2Fjaw111%2Fbbd1b00d656045ba8a2c%2Fraw%2Ftree.jsonld&frame=https%3A%2F%2Frawgit.com%2Fjaw111%2Fbbd1b00d656045ba8a2c%2Fraw%2Fframe2.jsonld
>
> So my questions:
> - is this specified on way or another in the standard
> - is this a problem in the processing in the playground, or
> - should the relevant triples be formulated as follows in the JSON-LD input:
>
> {
>   "@id": "http://example.com/conceptSchemes/myTree",
>   "@type": "http://www.w3.org/2004/02/skos/core#ConceptScheme"
> }
>
> Hope that is clear...
>
> Cheers,
> John
>
> [1] https://rawgit.com/jaw111/bbd1b00d656045ba8a2c/raw/tree.jsonld
> [2] https://rawgit.com/jaw111/bbd1b00d656045ba8a2c/raw/frame1.jsonld
> [3] https://rawgit.com/jaw111/bbd1b00d656045ba8a2c/raw/frame2.jsonld
>

John

[4] https://rawgit.com/jaw111/bbd1b00d656045ba8a2c/raw/tree2.jsonld

Received on Friday, 9 May 2014 14:38:52 UTC