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

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

From: Jason K. <jb...@en...> - 2017-07-01 00:32:42

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

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

From: Jason K. <jb...@en...> - 2017-07-01 00:52:58

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.blazegra
>> ph.com/browse/BLZG-1689
>> but it only returns in OWL format.
>>
>> Thanks in advance!
>>
>>
>> With regards,
>> Jason Koh
>> cseweb.ucsd.edu/~jbkoh
>>
>
>

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

From: Bryan T. <br...@bl...> - 2017-07-01 03:06:18

Glad you figured it out.  The supported formats are defined here:
https://wiki.blazegraph.com/wiki/index.php/REST_API#MIME_Types

Thanks,
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
>>
>>
>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> Bigdata-developers mailing list
> Big...@li...
> https://lists.sourceforge.net/lists/listinfo/bigdata-developers
>

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

From: Jason K. <jb...@en...> - 2017-07-01 02:39:59

Oh sorry, it was a typo. I tried application/x-turtle also, which does NOT
work.


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

On Fri, Jun 30, 2017 at 7:38 PM, Bryan Thompson <br...@bl...>
wrote:

> Glad you figured it out.  The supported formats are defined here:
> https://wiki.blazegraph.com/wiki/index.php/REST_API#MIME_Types
>
> Thanks,
> 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
> >>
> >>
> >
> >
> > ------------------------------------------------------------
> ------------------
> > Check out the vibrant tech community on one of the world's most
> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > _______________________________________________
> > Bigdata-developers mailing list
> > Big...@li...
> > https://lists.sourceforge.net/lists/listinfo/bigdata-developers
> >
>

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

From: Bryan T. <br...@bl...> - 2017-07-01 03:19:17

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
>>
>>
>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> Bigdata-developers mailing list
> Big...@li...
> https://lists.sourceforge.net/lists/listinfo/bigdata-developers
>

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

From: Jason K. <jb...@en...> - 2017-07-01 00:56:48

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
>

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

From: Jason K. <jb...@en...> - 2017-07-01 02:52:26

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
> >>
> >>
> >
> >
> > ------------------------------------------------------------
> ------------------
> > Check out the vibrant tech community on one of the world's most
> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > _______________________________________________
> > Bigdata-developers mailing list
> > Big...@li...
> > https://lists.sourceforge.net/lists/listinfo/bigdata-developers
> >
>

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

From: Bryan T. <br...@bl...> - 2017-07-01 03:01:36

Conneg is handled here:
https://github.com/blazegraph/database/blob/64bb8ca92eb063d45d68ec920a34b5321b80e2fe/bigdata-core/bigdata-sails/src/java/com/bigdata/rdf/sail/webapp/BigdataRDFContext.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
>> >>
>> >>
>> >
>> >
>> >
>> > ------------------------------------------------------------------------------
>> > Check out the vibrant tech community on one of the world's most
>> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
>> > _______________________________________________
>> > Bigdata-developers mailing list
>> > Big...@li...
>> > https://lists.sourceforge.net/lists/listinfo/bigdata-developers
>> >
>
>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> Bigdata-developers mailing list
> Big...@li...
> https://lists.sourceforge.net/lists/listinfo/bigdata-developers
>

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

From: Jason K. <jb...@en...> - 2017-07-01 03:43:30

Building it from the source file is a long shot to me for now, but I will
try it later.


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

On Fri, Jun 30, 2017 at 8:01 PM, Bryan Thompson <br...@bl...>
wrote:

> Conneg is handled here:
> https://github.com/blazegraph/database/blob/64bb8ca92eb063d45d68ec920a34b5
> 321b80e2fe/bigdata-core/bigdata-sails/src/java/com/
> bigdata/rdf/sail/webapp/BigdataRDFContext.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
> >> >>
> >> >>
> >> >
> >> >
> >> >
> >> > ------------------------------------------------------------
> ------------------
> >> > Check out the vibrant tech community on one of the world's most
> >> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> >> > _______________________________________________
> >> > Bigdata-developers mailing list
> >> > Big...@li...
> >> > https://lists.sourceforge.net/lists/listinfo/bigdata-developers
> >> >
> >
> >
> >
> > ------------------------------------------------------------
> ------------------
> > Check out the vibrant tech community on one of the world's most
> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > _______________________________________________
> > Bigdata-developers mailing list
> > Big...@li...
> > https://lists.sourceforge.net/lists/listinfo/bigdata-developers
> >
>

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

From: Jerven B. <jer...@si...> - 2017-07-02 20:50:10

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
> >> > 
> >> > -----------------------------------------------------------------------
> >> > ------- Check out the vibrant tech community on one of the world's most
> >> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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> >> > https://lists.sourceforge.net/lists/listinfo/bigdata-developers
> > 
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Re: [Bigdata-developers] Can't format SPARQL result with Turtle.

From: Jason K. <jb...@en...> - 2017-07-02 20:55:09

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 <jer...@si...>
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
> > >> >
> > >> > ------------------------------------------------------------
> -----------
> > >> > ------- Check out the vibrant tech community on one of the world's
> most
> > >> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > >> > _______________________________________________
> > >> > Bigdata-developers mailing list
> > >> > Big...@li...
> > >> > https://lists.sourceforge.net/lists/listinfo/bigdata-developers
> > >
> > > ------------------------------------------------------------
> --------------
> > > ---- Check out the vibrant tech community on one of the world's most
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> > > _______________________________________________
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> > > Big...@li...
> > > https://lists.sourceforge.net/lists/listinfo/bigdata-developers
> >
> > ------------------------------------------------------------
> ----------------
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>
>
>
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