- From: Michael Brunnbauer <brunni@netestate.de>
- Date: Thu, 23 Feb 2012 16:59:33 +0100
- To: David Booth <david@dbooth.org>
- Cc: carsten.kessler@uni-muenster.de, public-lod@w3.org, Chad Hendrix <hendrix@un.org>
Hello David,
On Thu, Feb 23, 2012 at 09:51:29AM -0500, David Booth wrote:
> I do not have any specific evidence. I simply meant that SPARQL server
> developers probably did not have thousands of "FROM NAMED" clauses in
> mind as their primary design target, so you could run into unforeseen
> difficulties. If some SPARQL servers do handle this well, or if someone
> has made such measurements, it would be great to hear about them.
I do not see why you have to name thousands of graphs in the query. Is the
metadata not attached to the named graph with the named graph URI as subject ?
You could query it like this:
select ?s ?p ?o where {
graph ?g1 { ?g <http://xmlns.com/foaf/0.1/maker> <http://www.brunni.de/foaf.rdf#me> }
graph ?g { ?s ?p ?o }
}
This gets all triples from all graphs created by
<http://www.brunni.de/foaf.rdf#me>. The metadata triples do not even have to
be in the same graph.
Did I miss some point in the course of the thread ?
Regards,
Michael Brunnbauer
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Received on Thursday, 23 February 2012 16:00:02 UTC