Re: [Bigdata-developers] Can't format SPARQL result with Turtle.

[Jason K. <jb...@en...>]

Ah, got it! I must have been out of mind. Thanks for the clarification!


With regards,
Jason Koh
cseweb.ucsd.edu/~jbkoh

On Sun, Jul 2, 2017 at 1:36 PM, Jerven Bolleman <jerven.bolleman@sib.swiss>
wrote:

> The issue is that it is a SELECT query, which does not have an RDF output,
> which is why it can't give a turtle output. Only for CONSTRUCT and DESCRIBE
> queries can one normally get RDF output.
>
> Regards,
> Jerven
>
> On Saturday, July 1, 2017 5:01:08 AM CEST Bryan Thompson wrote:
> > Conneg is handled here:
> > https://github.com/blazegraph/database/blob/
> 64bb8ca92eb063d45d68ec920a34b532
> > 1b80e2fe/bigdata-core/bigdata-sails/src/java/com/bigdata/
> rdf/sail/webapp/Big
> > dataRDFContext.java at around line 2470.  Not sure what is going on
> offhand.
> >  Can you set a debugger on this and see what is happening?
> >
> > } else {
> > // Use whatever was specified by the client.
> > final List<String> acceptHeaders =
> > Collections.list(req.getHeaders("Accept")); acceptStr =
> > ConnegUtil.getMimeTypeForQueryParameterQueryRequest(
> > req.getParameter(BigdataRDFServlet.OUTPUT_FORMAT_QUERY_PARAMETER),
> > acceptHeaders.toArray(new String[acceptHeaders.size()]));
> > }
> >
> > // Do conneg.
> > final ConnegUtil util = new ConnegUtil(acceptStr);
> >
> > On Fri, Jun 30, 2017 at 7:52 PM, Jason Koh <jb...@en...> wrote:
> > > Thanks for the suggestion. I tried both with/without a space after the
> > > colon, but both don't work.
> > > (Space after the colon is a common practice:
> > > https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html)
> > >
> > >
> > > With regards,
> > > Jason Koh
> > > cseweb.ucsd.edu/~jbkoh
> > >
> > > On Fri, Jun 30, 2017 at 7:48 PM, Bryan Thompson <br...@bl...>
> > >
> > > wrote:
> > >> Just looking at the wiki page.  Maybe it is the whitespace between the
> > >> ":" and text/turtle?  The examples there do not have that whitespace.
> > >> Pretty sure it is not part of the http header convention.
> > >>
> > >> E.g., curl -X POST http://localhost:8080/bigdata/sparql
> > >> --data-urlencode 'query=SELECT * { ?s ?p ?o } LIMIT 1' -H
> > >> 'Accept:application/rdf+xml'
> > >>
> > >> From the same wiki page.
> > >>
> > >> Bryan
> > >>
> > >> On Fri, Jun 30, 2017 at 5:52 PM, Jason Koh <jb...@en...>
> wrote:
> > >> > I tried application/x-turtle also, which does work.
> > >> >
> > >> >
> > >> > With regards,
> > >> > Jason Koh
> > >> > cseweb.ucsd.edu/~jbkoh
> > >> >
> > >> > On Fri, Jun 30, 2017 at 5:26 PM, Jason Koh <jb...@en...>
> wrote:
> > >> >> Btw, Build Version=2.1.4
> > >> >>
> > >> >>
> > >> >> With regards,
> > >> >> Jason Koh
> > >> >> cseweb.ucsd.edu/~jbkoh
> > >> >>
> > >> >> On Fri, Jun 30, 2017 at 5:09 PM, Jason Koh <jb...@en...>
> wrote:
> > >> >>> Hi there,
> > >> >>>
> > >> >>> Thanks for the great project. I am trying to use this for backend
> of
> > >> >>> my
> > >> >>> project. Though Blazegraph looks not that active for now, it is
> the
> > >> >>> fastest
> > >> >>> SPARQL endpoint in my experiences.
> > >> >>>
> > >> >>> I am trying to parse my SPARQL query result with Turtle, but
> > >> >>> Blazegraph
> > >> >>> does not return Turtle format but OWL/XML format, that my library
> > >> >>> cannot
> > >> >>> parse. I specifically did following command:
> > >> >>> curl -X POST http://localhost:9999/blazegraph/sparql
> --data-urlencode
> > >> >>> 'query=<queryStr>' -H 'Accept: text/turtle'
> > >> >>> I checked that this is correct:
> > >> >>> https://jira.blazegraph.com/browse/BLZG-1689
> > >> >>> but it only returns in OWL format.
> > >> >>>
> > >> >>> Thanks in advance!
> > >> >>>
> > >> >>>
> > >> >>> With regards,
> > >> >>> Jason Koh
> > >> >>> cseweb.ucsd.edu/~jbkoh
> > >> >
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