Re: [Virtuoso-users] What does "not support OPTION (...) clause for triples so SPARQL query can not be composed" mean?

[Rumi]

Hi Andra,

On 27-May-14 9:25 PM, Andra Waagmeester wrote:

I am trying to run a federated query of which the individual sub graphs on the their respective SPARQL points return the expected results, however when combined I am getting the following error message: Virtuoso 37000 Error SP031: SPARQL compiler: SERVICE <https://www.ebi.ac.uk/fgpt/atlasrdf/sparql> at line 33 does not support OPTION (...) clause for triples so SPARQL query can not be composed.

The error message means that the https://www.ebi.ac.uk/fgpt/atlasrdf/sparql sparql endpoint does not support OPTION clause.

Basically, you should be able to use the following command to
interrogate a target SPARQL endpoint (if initial SPARQL-FED fails):

SPARQL
LOAD SERVICE  <{SPARQL-END-POINT-URL}> DATA

So in your case:
LOAD SERVICE  <https://www.ebi.ac.uk/fgpt/atlasrdf/sparql> DATA ;



Best Regards,
Rumi Kocis

I am running:
Virtuoso Open Source Edition (Column Store) (multi threaded)
Version 7.1.1-dev.3209-pthreads as of May 21 2014
Compiled for Linux (x86_64-unknown-linux-gnu)

and the query submitted is:

SELECT DISTINCT ?wpTitle ?dbXref ?expressionValue WHERE {

  { GRAPH <http://wikipathways>{

    ?pwElement dcterms:isPartOf ?wpPathway .

    ?wpPathway dc:identifier <http://identifiers.org/wikipathways/WP455> .

    ?wpPathway dc:title ?wpTitle .

    ?pwElement wp:bdbEnsembl ?dbXref .

  }

   SERVICE <https://www.ebi.ac.uk/fgpt/atlasrdf/sparql> {

        ?value atlasterms:hasFactorValue ?factor .

        ?value atlasterms:isMeasurementOf ?probe .

        ?value atlasterms:pValue ?pvalue .

        ?value rdfs:label ?expressionValue .

        ?probe atlasterms:dbXref ?dbXref .

        ?disFactor rdfs:subClassOf+ efo:EFO_0000408 .

        ?disease rdf:type ?disFactor .

        ?disFactor rdfs:label ?label .

    }

  }

}





Regards,


Andra




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Anyone has an idea of what is going wrong here? Any suggestion would be highly appreciated.

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