RDF Star Support

[bolerio]

Is RDF/SPARQL Star support? I tried with GraphDB with a query like

select * where {
<< <somesubject> <someprop> "somevalue" >> ?p ?v
}

The query succeeds and the variables ?p and ?v are instantiated correctly, but instead of the triple I get back some GraphDB internal generated identifier.

SPARQL HTTP Protocol is probably behind on RDF Star....any thoughts?

Apologies if this is not the right forum to ask a question like this - I see the same people in various RDF JavaScript effort, perhaps there is some discussion forum that I should be using.

[tpluscode]

Are you sure that GraphDB sends a correct response? If you get something strange from the endpoint itself

I doubt this library could be at fault much itself. After all, it's just a fairly simple wrapper which performs the correct request and handles parsing of the response (be it SELECT bindings, triples from CONSTRUCT/DESCRIBE, etc)

That said, a parser used by sparql-http-client could have issues with RDF-Star but does not sound like that's the case

[bergos]

@bolerio The result parser doesn't support RDF-star at the moment. I plan to add this feature in the next major version. A catalog of features is in progress, and I will create issues and a milestone this week. The coding part is planned to be done in January.

[bolerio]

@bergos Thanks for the info. Can't promise anything, but I'll monitor and if I find time I could try to contribute with the effort.

[bolerio]

@tpluscode I am not sure that GraphDB sends the correct response, no. Also, I don't know what "correct" is here because I've never seen a spec for "SPARQL Star HTTP Protocol". But that's a good point, there could be a bug there...