On 6/19/14 6:12 AM, Tatiana Tarasova wrote:
Going back to the sponger service. We didn't install rdf_mappers_vad, but we enabled the sponging functionality for our SPARQL endpoint http://linkedstat.spaziodati.eu/sparql, as it is described here [2]. We used this functionality to execute queries that fetch data from DBpedia (following owl:sameAs links).
That's where you extra data is coming from. Any SPARQL query comprised of a FROM {HTTP URL} clause will add data to your instance. The target Named Graph IRI will takes the form of the data source HTTP URL.
To disable Sponging simply remove the SPARQL_SPONGE grant on the SQL user account 'SPARQL'.
If you want to grant Sponging functionality to specific users, then you need to use Virtuoso ACL functionality.
-- Regards, Kingsley Idehen Founder & CEO OpenLink Software Company Web: http://www.openlinksw.com Personal Weblog: http://www.openlinksw.com/blog/~kidehen Twitter Profile: https://twitter.com/kidehen Google+ Profile: https://plus.google.com/+KingsleyIdehen/about LinkedIn Profile: http://www.linkedin.com/in/kidehen
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