Hi all,
could someone give me an advice on how to correctly construct a SPARQL
1.1 query containing "FILTER NOT EXISTS" construct ?
What I've found in the ARQ documentation is that ElementFilter takes an Expr in
the constructor but ElementNotExists is not a subclass of Expr. So far I've
used E_NotExists with ElementFilter but it generates "FILTER notexists" which
is not correct syntax. TDB accepts it but I'm experimenting with Stardog for
performance reasons and it throws a MalformedQuery exception so I would need to
generate a correct syntax.
Thanks in advance.
Svatopluk Šperka
