- From: Steve Harris <S.W.Harris@ecs.soton.ac.uk>
- Date: Sun, 19 Dec 2004 18:42:21 +0000
- To: RDF Data Access Working Group <public-rdf-dawg@w3.org>
On Sun, Dec 19, 2004 at 09:01:05 -0600, Dan Connolly wrote: > > My engine has no way to turn off inference (though it wouldn't be hard to > > add globaly), but I'd like it if that was possible on a per-statement way > > via the query language. > > I'm not sure what you mean; it makes more sense, to me, to specify what > you're querying against in the FROM clause. If we wanted explicit > support for "turning RDFS inferencing off" in SPARQL, I'd expect it > to look something like: > > SELECT ?C FROM rdfs(<mydata.rdf>) WHERE ( :x rdf:type ?C). > vs. > SELECT ?C FROM <mydata.rdf> WHERE ( :x rdf:type ?C). [turning off wasn't really what I was thinking of, but I cant think of a better term, ignoring maybe] OK, well I would expect it to look more like SELECT ?C WHERE GROUND (:x rdf:type ?C) I dont really like FROM as it doesn't make much sense in server-like systems where all the graphs are preloaded (for performance or security reasons), or systems that are reflecting underlying data in another format and translating queries on the fly. - Steve
Received on Sunday, 19 December 2004 18:42:25 UTC