Re: [Rdfapi-php-interest] Nested SPARQL Graph Patterns

Peter,

> triple pattern. However, RAP parses this into a Query opbject
> equivalent to:
>=20
> {
>      { ?s :p1 ?o }
>    OPTIONAL
>      { }
>      { ?s :p2 ?o2 . }
>      { ?s :p3 ?o3 . }
> }

This is a behavior of SparqlParser that is weird, but cannot be taken
away simply due to the internal working.
In my SparqlEngineDb, I check if the pattern is empty and skip it in
that case.


--=20
Regards/Mit freundlichen Gr=FC=DFen
Christian Weiske