- From: Rick Jelliffe <ricko@allette.com.au>
- Date: 2001年9月13日 22:17:49 +1000
- To: "www-rdf-comments" <www-rdf-comments@w3.org>
- Message-ID: <007901c13c4e1ドルaefe6d04ドルbc8a8c0@AlletteSystems.com>
From: "Dave Beckett" <dave.beckett@bristol.ac.uk> > propertyAttr is always used in the same form. In typedNode > http://www.w3.org/TR/2001/WD-rdf-syntax-grammar-20010906/#typedNode > > it used like this: > [attributes]=set(idAboutAttr?, bagIdAttr?, propertyAttr*), > > i.e the propertyAttr term can be repeated 0 or more times. Each of > these propertyAttr uses can be either a typeAttr or propAttr. I > think this does not restrict the use of multiple rdf:type properties > and/or other namespaced properties in any way. Does that make sense? Yes. But surely that is wrong, because [attributes]=set(idAboutAttr?, bagIdAttr?, propertyAttr*) then expands to [attributes]=set(idAboutAttr?, bagIdAttr?, (typeAttr | propAttr)*) which, allowing multiple typeAttr, is impossible? An XML element can only have one attribute with a single name*** Do you mean this: [attributes]=set(idAboutAttr?, bagIdAttr?, typeAttr?, propAttr* ) Also, I think by "any" namespace you always mean "any except RDF". And does this syntax exhaust the RDF namespace? Cheers Rick Jelliffe *** Actually, one could think of getting around this using <x xmlns:r1="namespace for rdf" xmlns:r2="namespace for rdf" r1:type=" ..." r2:type="..." /> but Namespace in XML explicitly disallows this in 5.3 "Uniqueness of Attributes" http://www.w3.org/TR/REC-xml-names/
Received on Thursday, 13 September 2001 08:11:54 UTC