Yes I used Dbpedia endpoint and if I do not give call to toString(), it gives me error.
<https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail> <#DDB4FAA8-2DD7-40BB-A1B8-4E2AA1F9FDF2> On Thu, Apr 28, 2016 at 11:42 AM, Lorenz B. < [email protected]> wrote: > Debugging a query is more efficient if you print the query to the command > line first, and put it in the Virtuoso web interface - I suppose that you > use the offical DBpedia endpoint. > By the way, it's not clear why you call toString() on "x" . > > I think you need to provide more information, before anyone can answer >> your questions. >> >> What is the actual endpoint or dataset you are executing on? What is >> the code executing the query? >> >> On Wed, Apr 27, 2016 at 5:12 PM, mehmet mehmet <[email protected]> >> wrote: >> >>> String queryString ="PREFIX dbr: <http://dbpedia.org/resource/> " + >>> "PREFIX >>> dbprop:<http://dbpedia.org/property/>" + >>> >>> "SELECT * " + "WHERE {" + " dbr:Germany dbprop:capital ?x"+ "}" ; >>> >>> at the end I display it >>> >>> System.out.println(soln.getResource("x".toString())); >>> >>> >>> *But it displays nothing (no error message but no output)* >>> >>> *What is the problem in the code.* >>> >> > -- > Lorenz Bühmann > AKSW group, University of Leipzig > Group: http://aksw.org - semantic web research center > >
