On Thu, Jun 14, 2012 at 4:25 PM, Rob Vesse <[email protected]> wrote: > The 1.1 test suite does contain tests for MINUS but AFAICT the ARQ trunk > does not contain these. I was actually asking about this in a separate > thread on the dev list the other day. Presumably at least Andy has them > somewhere because he produces EARL reports re: ARQ's SPARQL 1.1 compliance > but it doesn't look like that test suite is anywhere obvious in SVN yet
Ah, I had mistakenly thought that I had made my search for "minus" case insensitive. :-) However, while I see numerous tests for MINUS with interesting combinations of FILTERS, NOT EXISTS, and cascaded MINUS operations, I do not see any that result in either the minuend (LHS) or the subtrahend (RHS) having unbound variables. It's these situations that lead to so many edge cases, and make indexing so hard. Fortunately, they're not very likely to happen in real world use-cases, so efficiency is less of a concern, but they still need to be addressed for correctness. Paul
