[Virtuoso-users] SPARQL ASK for graph existance

2014-01-29 Thread Paolo Ciccarese
I am trying to check for the existence of a graph and if I execute this query in the Conductor ASK { GRAPH http://example.org/tests/graph/001 { ?s ?p ?o . } } returns 'false' when the graph is not there. However, if I run the same query with Jena and the Virtuoso Jena Provider I always get back

Re: [Virtuoso-users] SPARQL ASK for graph existance

2014-01-29 Thread Hugh Williams
Hi Paolo, Have you tried the Example9 program which demonstrates the use of ASK queries in the Jena Provider documentation at: http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtJenaProvider Also, please confirm the version of the Virtuoso server, Jena Provider , Jena