Hey Andy
Me and one of my colleagues are once again having a debate about the
interpretation of SPARQL datasets which you may be able to clear up.
Assuming the following dataset created with a SPARQL Update:
INSERT DATA
{
<ex:default> <ex:default> <ex:default> .
GRAPH <ex:from> { <ex:from> <ex:from> <ex:from> }
GRAPH <ex:named> { <ex:named> <ex:named> <ex:named> }
GRAPH <ex:other> { <ex:other> <ex:other> <ex:other> }
}
Now given the query:
SELECT * FROM <ex:from> { GRAPH <ex:named> { ?s ?p ?o } }
What should be the result?
I was expected to see a single row with the triple from <ex:named> but ARQ
gives back no results.
Maybe this is just a case of me mis-interpreting the SPARQL spec but I'd like
to get an answer from a definitive source. My interpretation is that if you
have a FROM without any FROM NAMED you are setting the default graph explicitly
but leaving the named graphs to be all named graphs in the store.
Cheers,
Rob
