Hi Heiko,
I'm not sure, but could you try closing the QueryExecutionFactory after the
try/catch block and see if you still have the same error ?
Regards,
Alexandru
On Thu, Nov 22, 2012 at 1:06 PM, Heiko Paulheim <[email protected]
> wrote:
> Dear DBpedians,
>
> this is a rather odd problem (see exception below) when querying DBpedia
> via JENA+SPARQL (sample code below). The query itself seems sane and can
> also be executed without any problems using the web interface:
> select distinct ?p where {<http://dbpedia.org/resource/Darmstadt> ?p
> ?o} ORDER BY ?p
>
> The exception seems to occur when the iterator steps from
> http://dbpedia.org/property/marHighC
> to
> http://dbpedia.org/property/marLowC
> both of which do not contain any special characters or the like.
>
> Any ideas, anyone?
>
> Best,
> Heiko
>
> The exception I get is (message translated: "XML document structures
> have to begin and end with the same element"):
> javax.xml.stream.XMLStreamException: ParseError at [row,col]:[232,57]
> Message: XML-Dokumentstrukturen müssen innerhalb derselben Entität
> beginnen und enden.
> at
>
> com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(XMLStreamReaderImpl.java:592)
> at
>
> com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.getElementText(XMLStreamReaderImpl.java:836)
> at
>
> com.hp.hpl.jena.sparql.resultset.XMLInputStAX$ResultSetStAX.getOneSolution(XMLInputStAX.java:506)
> at
>
> com.hp.hpl.jena.sparql.resultset.XMLInputStAX$ResultSetStAX.hasNext(XMLInputStAX.java:231)
>
>
>
> My code:
> QueryExecution qe =
> QueryExecutionFactory.sparqlService("http://dbpedia.org/sparql";,
> "select distinct ?p where
> {<http://dbpedia.org/resource/Darmstadt> ?p ?o} ORDER BY ?p");
> ResultSet rs = qe.execSelect();
>
> qe.close();
>
> try {
> for (; rs.hasNext();)
> System.out.println(rs.next().get("p"));
> } catch (Exception e) {
> System.out.println(e);
> }
>
> --
> Dr. Heiko Paulheim
> Knowledge Engineering Group
> Technische Universität Darmstadt
> Phone: +49 6151 16 6634
> Fax: +49 6151 16 5482
> http://www.ke.tu-darmstadt.de/staff/heiko-paulheim
>
>
>
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