- From: Boris Motik <boris.motik@comlab.ox.ac.uk>
- Date: Wed, 24 Sep 2008 19:38:51 +0100
- To: <public-owl-wg@w3.org>
Hello, Since nobody objected, I have just changed the spec and have made constraining facets URIs. Here are the diffs: Syntax: http://www.w3.org/2007/OWL/wiki/index.php?title=Syntax&diff=13386&oldid=13356 Direct Semantics: http://www.w3.org/2007/OWL/wiki/index.php?title=Direct_Semantics&diff=13379&oldid=13361 RDF Mapping: http://www.w3.org/2007/OWL/wiki/index.php?title=Mapping_to_RDF_Graphs&diff=13394&oldid=13302 XML Syntax: http://www.w3.org/2007/OWL/wiki/index.php?title=OWL_XML_Schema&diff=13396&oldid=13236 The profiles didn't need updating because they don't support facets. Michael Schneider might need to update the RDF-Based Semantics, I'm not sure. Regards, Boris > -----Original Message----- > From: public-owl-wg-request@w3.org [mailto:public-owl-wg-request@w3.org] On Behalf Of Boris Motik > Sent: 22 September 2008 16:32 > To: public-owl-wg@w3.org > Subject: We should turn facets into URIs in the spec > > > Hello, > > Peter has just detected an inconsistency in my resolution of ISSUE-71. The problem is that all facets > are turned into xsd:<facet > name>, which puts the langPattern facet into the xsd: namespace -- probably not what we want. > > Luckily, there is an easy fix to this: we should turn facets into URIs. The new XML Schema Datatypes > document > (http://www.w3.org/TR/xmlschema11-2/#built-in-datatypes) explicitly says that each facet is > identified by a URI. Thus, we should > obey this convention and adapt our spec accordingly; this will immediately resolve the mapping > issues. > > Concretely, this means that instead of writing > > DatatypeRestriction( xsd:integer minIncusive "10"^^xsd:integer) > > we should write > > DatatypeRestriction( xsd:integer xsd:minIncusive "10"^^xsd:integer) > > This will require a small change to the syntax (and the XML Syntax as well). The URIs of these facets > would be placed into the > reserved vocabulary, which will prevent any problems with the declarations. Finally, the RDF Mapping > would be modified to use the > URI of the facet as is, without putting it explicitly into the xsd: namespace. > > > I believe this to be a relatively low-level problem that can be treated as being editorial. Hence, > unless anyone objects, I'd go > ahead and make this change in the following days. Please let me know if you disagree with this > proposal. > > Regards, > > Boris >
Received on Wednesday, 24 September 2008 18:40:32 UTC