On 10/09/15 18:20, Mark Feblowitz wrote:
Ok -
I tested all forms that you recommended, and the one that does work is
application/rdf+json.
Caveat - that's not JSON-LD.
https://jena.apache.org/documentation/io/rdf-json.html
Thanks very much for the suggestion!
Mark
On Sep 10, 2015, at 12:16 PM, Mark Feblowitz <[email protected]> wrote:
That makes sense. But it doesn’t seem to work. I still get it in RDF XML format.
I’m wondering whether the problem is with how I’m submitting the query.
I’m using curl as follows:
curl -v -H "Content-Type:application/sparql-query" -H “Accept: application/ld+json"
-X POST http://host:port/ds/sparql <http://host:port/ds/sparql> -d …
Works for me (Fuseki1 and Fuseki2, latest).
Which version of Fuseki? (did it have JSON-LD?)
Andy
Should I instead be using a URL parameter?
Thanks,
Mark
On Sep 9, 2015, at 1:33 PM, Colin Maudry <[email protected]
<mailto:[email protected]>> wrote:
Hi Mark,
This is because CONSTRUCT doesn't return query results (a table
structure), but a graph.
Two possibilities :
* If you want to stick to your CONSTRUCT query and want JSON out, you
should request JSON-LD[1] with "application/ld+json". You can also
try "application/json" or "application/rdf+json" to get RDF/JSON (I
never tried). According to the spec[2], you're encouraged to use
JSON-LD instead.
* If you really want JSON SPARQL results, that's a SELECT query that
you need to post.
I hope it helps.
Colin Maudry
[1] http://www.w3.org/TR/json-ld/ <http://www.w3.org/TR/json-ld/>
[2] http://www.w3.org/TR/rdf-json/ <http://www.w3.org/TR/rdf-json/>
On 09/09/2015 18:58, Mark Feblowitz wrote:
At my wits’ end here - when I invoke a SPARQL using curl to a local Fuseki
server, and the query is a construct query, and I specify
-H “Accept: application/sparql-results+json”
or
-H “Accept: application/sparql-results%2Bjson”
I consistently get results back in RDF/XML
<rdfs99:RDF
xmlns:dp="http://dbpedia.org/property/ <http://dbpedia.org/property/>"
xmlns:yago="http://dbpedia.org/class/yago/ <http://dbpedia.org/class/yago/>"
xmlns:nsl="http://purl.org/ontology/storyline/“
<http://purl.org/ontology/storyline/%E2%80%9C>
...
With no "-H Accept…”, I’m seeing triples format.
In fact, no matter what I set the Accept header to, I see rdf/xml. Without an
Accept: header, I see ntriples.
Any ideas?
