- From: Christopher Schramm <schramm@informatik.uni-luebeck.de>
- Date: Wed, 12 Dec 2012 08:55:12 +0100
- To: public-sparql-dev@w3.org
Dear W3C, i've encountered a problem while reading the SPARQL 1.1 Proposed Recommendation of November 8. The question i have is in regards to an example in section 9.2. The example deals with Inverse Path Sequences and has the following example: { ?x foaf:knows/^foaf:knows ?y . FILTER(?x != ?y) } is equivalent to { ?x foaf:knows ?gen1 . ?gen1 foaf:knows ?y . FILTER(?x != ?y) } However, in my opinion it should be equivalent to { ?x foaf:knows ?gen1 . ?y foaf:knows ?gen1 . FILTER(?x != ?y) } Otherwise i fail to see the difference between the orgininal query and the same query without an inversion. I would like to hear your opinion on the matter. Moreover i have a question regarding the following query: { ?x ^(foaf:a/foaf:b) ?y . } I would think, that the equivalent query would be the following: { ?y foaf:b ?gen1 . ?gen1 foaf:a ?x . } Am i correct there? Thank you for answers. Greetings, Christopher Schramm
Received on Thursday, 13 December 2012 10:47:16 UTC