Doing this on my phone. Apologies for any mistakes. Sent from my iPhone
On 9 Sep 2011, at 08:43, Paolo Castagna <[email protected]> wrote: > There is something interesting here: http://openjena.org/wiki/TDB/QuadFilter > if you need to work at the lowest level excluding just a few triples. I've > never tried/use myself (yet). > The easier option could be to have different datasets in Fuseki and use > something in front of it for authorization/authentication. In caboto we enforce graph level security [1] by query rewriting to FILTER every GRAPH. It's much like the TDB filter but will work over any sparql store, although default union can't be handled. We also use a query distributor called arnos which could give you the beginnings of a sparql graph sharding scheme, I suppose. Damian [1] <http://code.google.com/p/caboto/source/browse/caboto/src/main/java/org/caboto/security/sparql>
