Hi Kingsley,
This is actually a property path query:) I just started experimenting and
from the definition
+ means 1 or more and
* means 0 or more
so in your query, * (0) means that rdf:type might not exist at all (and
return any resource) or 0 equals the original "rdf:type dbo:Person" triple
pattern?
If it is the latter I should have used * from the beginning
Thanks,
Dimitris
On Fri, Sep 27, 2013 at 5:11 PM, Kingsley Idehen <kide...@openlinksw.com>wrote:
> 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><
>> 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<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<http://dbpedia.org/ontology/Person>>
> .
> FILTER NOT EXISTS {?s
> <http://dbpedia.org/ontology/**birthYear<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<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<http://www.openlinksw.com/blog/~kidehen>
> Twitter/Identi.ca handle: @kidehen
> Google+ Profile:
> https://plus.google.com/**112399767740508618350/about<https://plus.google.com/112399767740508618350/about>
> LinkedIn Profile:
> http://www.linkedin.com/in/**kidehen<http://www.linkedin.com/in/kidehen>
>
>
>
>
>
>
>
> ------------------------------------------------------------------------------
> October Webinars: Code for Performance
> Free Intel webinars can help you accelerate application performance.
> Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most
> from
> the latest Intel processors and coprocessors. See abstracts and register >
> http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk
> _______________________________________________
> Virtuoso-users mailing list
> Virtuoso-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/virtuoso-users
>
>
--
Kontokostas Dimitris
------------------------------------------------------------------------------
October Webinars: Code for Performance
Free Intel webinars can help you accelerate application performance.
Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from
the latest Intel processors and coprocessors. See abstracts and register >
http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk
_______________________________________________
Virtuoso-users mailing list
Virtuoso-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/virtuoso-users
