An exception is thrown while querying a subject within a named graph about scylla-rdf HOT 4 CLOSED

@DramaticallyDecayed What were loaded into the store? Or the exception is reproducible on an empty one?

from scylla-rdf.

I've pushed a fix for the case when the store is empty. If it doesn't solve your problem, please, reopen the issue.

from scylla-rdf.

Thank you! It works fine even on the non-empty store. But now a slightly different kind of a query returns a slightly different exception.
The queries (on the non-empty store):

SELECT ?s ?o
WHERE {
    GRAPH <http://example.com/graphname> { 
      ?s a ?o . 
    } 
}

SELECT ?s ?o
WHERE {
    GRAPH <http://example.com/graphname> { 
      ?s a/rdfs:subClassOf+ :ClassName . 
    } 
}

return:

org.eclipse.rdf4j.query.QueryEvaluationException: com.datastax.driver.core.exceptions.InvalidQueryException: Invalid null value for clustering key part object

Edit A: add one more query that returns the same error

from scylla-rdf.

Now I added an extended unit test which covers all reported and similar cases. Give it a try! :)

from scylla-rdf.