- From: Matthew Perry <matthew.perry@oracle.com>
- Date: Wed, 02 Mar 2011 11:11:46 -0500
- To: Axel Polleres <axel.polleres@deri.org>
- CC: Birte Glimm <birte.glimm@comlab.ox.ac.uk>, SPARQL Working Group <public-rdf-dawg@w3.org>
Hi Axel, For :a :p "1"^^xsd:decimal . :a :p "1"^^xsd:integer . :a :p "1"^^xsd:float . :a :p "1"^^xsd:double . You would get :a :p "1"^^xsd:decimal . :a :p "1E0"^^xsd:float . :a :p "1E0"^^xsd:double . That is, floats stay floats, doubles stay doubles and everything else goes to decimal. - Matt On 3/2/2011 10:31 AM, Axel Polleres wrote: > Thanks Matt, > > just for interest... how about > > :a :p "1"^^xsd:decimal . > :a :p "1"^^xsd:integer . > > ? > > Axel > > On 2 Mar 2011, at 14:08, Matthew Perry wrote: > >> Hi, >> >> To answer Axel's question about canonicalization, Oracle canonicalizes all xsd-typed literals. >> >> For example, if you insert: >> :a :p "001"^^xsd:decimal . >> :a :p "01"^^xsd:decimal . >> >> Only a single triple (:a :p "1"^^xsd:decimal) makes it into the triple store. We maintain information that allows us to recreate the original non-canonicalized triples, but SPARQL queries only match against the canonicalized triples. >> >> - Matt >> >> On 3/2/2011 4:36 AM, Axel Polleres wrote: >>> On 1 Mar 2011, at 19:42, Birte Glimm wrote: >>> >>>> On 1 March 2011 14:52, Axel Polleres<axel.polleres@deri.org> wrote: >>>> just looked quickly over those, manual inspection... >>>> >>>> >>>> On 22 Feb 2011, at 16:02, Birte Glimm wrote: >>>> >>>>> Hi all, >>>>> I ran the following OWL Direct Semantics tests cases and they pass: >>>>> :owlds01 -- Test: OWL DS bnodes are not existentials >>>> looks ok to me. >>>> >>>>> :owlds02 -- Test: OWL DS bnodes are not existentials with answer >>>> looks ok to me. >>>> >>>>> :plainLit -- Test: Plain literals with language tag are not the same >>>> looks ok to me (but why is this OWL/Entailment specific? It would be, potentially if you asked for >>>> "name"^^xsd:string under D-entailment?) >>>> >>>> Well, another disadvantage of D-entailmen is that the datatype map is not fixed, i.e., there is no guaranee that systems support the same datatypes and one does not have to support rdf:PlainLiteral or even xsd:string, which also makes testing relatively difficult. >>> The lists in http://www.w3.org/TR/rdf-mt/#DTYPEINTERP or http://www.w3.org/TR/rif-dtb/#Symbol_Spaces (or intersection thereof) could be a start? >>> >>>> As I said, I am for removing D-entailment alltogether ;-) >>> I would like this to be discussed at least once more, it seems there is use out there of datatypes - the fact that implementation do canonicalisation is IMO an indication that something should be done about datatypes at least. (We had some earlier discussion about a >>> D$^-$-Entailment a while back, but I think just nobody had time to spend on it. >>> >>> At least I would like to gather once more which implementation does *what* about Datatypes and see whether there's need to standardise that, before we decide to drop it alltogether... but, yes, it's a matter of time as well. >>> >>> Axel >>>> Birte >>>> >>>> >>>> didn't look into the bind0x tests yet... >>>> >>>> Axel >>>> >>>>> as the same literal without >>>>> :bind01 -- Test: bind01 - BIND fixed data for OWL DL >>>>> :bind02 -- Test: bind02 - BIND fixed data for OWL DL >>>>> :bind03 -- Test: bind03 - BIND fixed data for OWL DL >>>>> :bind04 -- Test: bind04 - BIND fixed data for OWL DL >>>>> :bind05 -- Test: bind05 - BIND fixed data for OWL DL >>>>> :bind06 -- Test: bind06 - BIND fixed data for OWL DL >>>>> :bind07 -- Test: bind07 - BIND fixed data for OWL DL >>>>> >>>>> The bind0x test cases are as for simple entailment, but the input data >>>>> is extended o make it an OWL 2 DL ontology. The test :plainLit is >>>>> applicable also under OWL 2 RDF Based semantics. >>>>> Birte >>>>> >>>>> -- >>>>> Dr. Birte Glimm, Room 309 >>>>> Computing Laboratory >>>>> Parks Road >>>>> Oxford >>>>> OX1 3QD >>>>> United Kingdom >>>>> +44 (0)1865 283520 >>>>> >>>> >>>> >>>> -- >>>> Dr. Birte Glimm, Room 309 >>>> Computing Laboratory >>>> Parks Road >>>> Oxford >>>> OX1 3QD >>>> United Kingdom >>>> +44 (0)1865 283520 >>
Received on Wednesday, 2 March 2011 16:13:34 UTC