On 9/27/13 12:11 AM, Dimitris Kontokostas wrote:
Hi,I get the following internal error when I run [1] . When I run it without a property path (+) it works fine.Cheers, Dimitris Virtuoso 37000 Error SP031: SPARQL: Internal error: sparp_equiv_get_ro(): attempt of returning NULL when SPARP_EQUIV_GET_ASSERT & flags[1] http://dbpedia.org/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=SELECT+%3Fs+WHERE+{%0D%0A+++++++++++++++++++++++++++++%3Fs+rdf%3Atype%2B+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2FPerson%3E+.%0D%0A+++++++++++++++++++++++++++++FILTER+NOT+EXISTS+{%3Fs+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2FbirthYear%3E+%3Fv+}+}&format=text%2Fhtml&timeout=30000&debug=on <http://dbpedia.org/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=SELECT+%3Fs+WHERE+%7B%0D%0A+++++++++++++++++++++++++++++%3Fs+rdf%3Atype%2B+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2FPerson%3E+.%0D%0A+++++++++++++++++++++++++++++FILTER+NOT+EXISTS+%7B%3Fs+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2FbirthYear%3E+%3Fv+%7D+%7D&format=text%2Fhtml&timeout=30000&debug=on>-- Kontokostas Dimitris
Yep! It's a bug.
Workaround:
SELECT ?s WHERE {
?s a ?t . ?t rdf:type* <http://dbpedia.org/ontology/Person> .
FILTER NOT EXISTS {?s <http://dbpedia.org/ontology/birthYear> ?v } }
See:
http://dbpedia.org/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=%0D%0ASELECT+%3Fs+WHERE+%7B%0D%0A++%3Fs+a+%3Ft+.+%3Ft+rdf%3Atype*+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2FPerson%3E+.%0D%0A++FILTER+NOT+EXISTS+%7B%3Fs+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2FbirthYear%3E+%3Fv+%7D+%7D&format=text%2Fhtml&timeout=30000&debug=on
--
Regards,
Kingsley Idehen
Founder & CEO
OpenLink Software
Company Web: http://www.openlinksw.com
Personal Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca handle: @kidehen
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LinkedIn Profile: http://www.linkedin.com/in/kidehen
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