Hi,
when I try to perform an delete against my external endpoint (Virtuoso),
the query gets modified by Jena.
Original
DELETE FROM <http://test> { ?s <http://purl.org/dc/terms/identifier>
"21818744"^^<http://www.w3.org/2001/XMLSchema#string> . } WHERE { GRAPH
<http://test> {?s <http://purl.org/dc/terms/identifier>
"21818744"^^<http://www.w3.org/2001/XMLSchema#string> . }}
Modified by Jena
DELETE {
GRAPH <http://test> {
?s <http://purl.org/dc/terms/identifier>
"21818744"^^<http://www.w3.org/2001/XMLSchema#string> .
}
}
WHERE
{ GRAPH <http://test>
{ ?s <http://purl.org/dc/terms/identifier>
"21818744"^^<http://www.w3.org/2001/XMLSchema#string> }
}
Virtuoso cannot handle the second syntax. I also tried all given syntax
formats provided by Jena, but only ARQ does not throws an exception, but
does this modification instead.
Code I use:
UpdateRequest update = UpdateFactory.create(deleteString);
UpdateProcessor uExec = UpdateExecutionFactory.createRemote(update,
endpoint) ;
uExec.execute();
On 10.01.2013 19:44, Andy Seaborne wrote:
On 10/01/13 16:52, Carina Haupt wrote:
Hi,
is it possible to delete triples from an external triple store like
Virtuoso using the Jena API?
I found examples to use SPARQL/UPDATE statements for in memory stores,
but not external hosted ones.
Regards,
Carina
You can create executions on remote endpoints by:
UpdateExecution uExec =
UpdateExecutionFactory.createRemote(Update, remoteEndpoint) ;
uExec.execute() ;
Andy
--
Carina Haupt
Fraunhofer-Institute for Algorithms and Scientific Computing (SCAI)
Schloss Birlinghoven
D-53754 Sankt Augustin
Tel.: +49 - 2241 - 14 - 3480
E-mail: [email protected]
Internet: http://www.scai.fraunhofer.de
and
Bonn-Aachen International Center for Information Technology (B-IT)
Dahlmannstrasse 2
D-53113 Bonn
E-mail: [email protected]
Internet: http://www.b-it-center.de
