func-03.rq

Jena推理机

PREFIX  : <http://example.org/ns#>
PREFIX  jfn:     <java:com.hp.hpl.jena.query.function.library.>

# Same test as func-02 except we load the funcion knowing is java class
SELECT  ?z
WHERE
    { ?x :p ?z . 
      FILTER jfn:evenInteger(?z) .
    }