Hi Nicola,
I have reported this issue to development to look into and shall report back on
there findings/fix ...
Best Regards
Hugh Williams
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On 16 May 2014, at 11:45, ghirardi nicola <n.ghira...@cineca.it> wrote:
> I have this error from time to time writing queries:
>
> Variable '_::trans_subj_11_6' is used in subexpressions of the query but not
> assigned
>
> Often it "goes away" unchecking the "Strict checking of void variables"
> option and so not appear calling the sparql endpoint via rest.
> In this case the error show up when using 2 optional with a recursive
> property path in each of them.
> Removing a recursion or an optional the error does not occour anymore.
> Here the query
>
>
> PREFIX schema: <http://schema.org/>
> CONSTRUCT {
> <http://sapienzadigitallibrary.example.it/identifier/RMSDIGILAB_ARCHIVICOMPUTER>
>
> schema:name ?elValue .
> <http://sapienzadigitallibrary.example.it/identifier/RMSDIGILAB_ARCHIVICOMPUTER>
>
> schema:name ?subjectComplexTopic.
> }
> WHERE {
> OPTIONAL
> {
>
> <http://sapienzadigitallibrary.example.it/identifier/RMSDIGILAB_ARCHIVICOMPUTER>
> rdf:rest*/rdf:first ?elValue .
> }
> OPTIONAL
> {
> <http://sapienzadigitallibrary.example.it/identifier/RMSDIGILAB_ARCHIVICOMPUTER>
>
> (rdf:rest/rdf:first)* ?subjectComplexTopic.
> }
> }
>
> Here the url on the query on dbpedia (no expected result):
> http://dbpedia.org/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=PREFIX+schema%3A+%3Chttp%3A%2F%2Fschema.org%2F%3E%0D%0ACONSTRUCT+{%0D%0A%3Chttp%3A%2F%2Fsapienzadigitallibrary.uniroma1.it%2Fidentifier%2FRMSDIGILAB_ARCHIVICOMPUTER%3E+schema%3Aname+%3FelValue+.%0D%0A%3Chttp%3A%2F%2Fsapienzadigitallibrary.uniroma1.it%2Fidentifier%2FRMSDIGILAB_ARCHIVICOMPUTER%3E+schema%3Aname+%3FsubjectComplexTopic.%0D%0A}%0D%0AWHERE+{%0D%0AOPTIONAL%0D%0A{%0D%0A+%3Chttp%3A%2F%2Fsapienzadigitallibrary.uniroma1.it%2Fidentifier%2FRMSDIGILAB_ARCHIVICOMPUTER%3E+rdf%3Arest*%2Frdf%3Afirst+%3FelValue+.%0D%0A}%0D%0AOPTIONAL%0D%0A{%0D%0A%3Chttp%3A%2F%2Fsapienzadigitallibrary.uniroma1.it%2Fidentifier%2FRMSDIGILAB_ARCHIVICOMPUTER%3E+%28rdf%3Arest%2Frdf%3Afirst%29*+%3FsubjectComplexTopic.%0D%0A}+%0D%0A}%0D%0A%0D%0A%0D%0A&format=text%2Fx-html%2Bul&timeout=30000&debug=on
>
>
> Thanks
> Nicola
>
>
>
>
>
>
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