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
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