Hi Andy,
thanks for your reply.
I guess this requires a TDB endpoint, or is there any kind of SPARQL*
support for HTTP endpoints?
HTTP endpoint = Fuseki?
Not necessarily, I mean Jena used to query a remote SPARQL endpoint via
HTTP, whatever the server providing it.
I'm thinking of both the case where the remote endpoint has star
support, and the idea of translating SPARQL* constructs into patterns
based on the rdf: vocabulary (rdf:Statement, rdf:subject, etc).
No need - send a SPARQL-star query.
But, what if the endpoint doesn't support -star syntax? I'd expect a
syntax error. I'm thinking that, in this case, it could be useful if
Jena could translate a pattern like:
<< ?s ex:pred ?o>> ex:meta ?so
into:
?stmt a rdf:Statement;
rdf:subject ?s;
rdf:predicate ex:pred;
rdf:object ?o;
ex:meta ?so.
which would allow to send -star queries to plain SPARQL endpoints (yes,
with quite a deal of semantic assumptions).
(I have code that does RDF-star<->reification. There's an open JIRA
somewhere.)
interesting, you mean something like above?
Marco
