- From: Dave Beckett <dave.beckett@bristol.ac.uk>
- Date: Tue, 10 Dec 2002 11:33:23 +0000
- To: Simon Raboczi <raboczi@PIsoftware.com>
- cc: www-rdf-interest@w3.org
>>>Simon Raboczi said: > > It seems to me that there's no way in the WD syntax to combine the > functions of rdf:nodeID to create blank nodes, and rdf:ID to reify > statements. Thus, the only way to reify a statement without giving > it a URI is by writing out the entire reification explicitly. > > Perhaps an rdf:statementID construct is needed...? It is not really needed. You can use rdf:nodeID anywhere rdf:about or rdf:resource is (was in RDF M&S) allowed. nodeElement ... attributes == ... idAttr | nodeIdAttr | aboutAttr ... -- http://www.w3.org/TR/rdf-syntax-grammar/#nodeElement emptyPropertyElt ... attributes == ... resourceAttr | nodeIdAttr ... -- http://www.w3.org/TR/rdf-syntax-grammar/#emptyPropertyElt so just use rdf:bagID (on node elements) and rdf:ID (on property elements) along with rdf:nodeID, and things will work as before. > <rdf:Description rdf:nodeID="subject"> > <ex:property rdf:statementID="statement" rdf:nodeID="object"/> > </rdf:Description> rather, use: <rdf:Description rdf:nodeID="subject"> <ex:property rdf:ID="statement" rdf:nodeID="object"/> </rdf:Description> where 'statement' gives a URI for the triple: _:subject ex:property _:object . where ex: is some namespace URI not given here. <snip/> > For symmetry, one might also want rdf:statementBagID to generate a > blank rdf:Bag of reified statements in the spirit of rdf:bagID. Nope, rdf:bagID works just fine there too, for example: <rdf:Description rdf:nodeID="subject" rdf:bagID="bag"> <ex:property>value</ex:property> </rdf:Description> More on this with examples at 2.17 Reifying Statements - rdf:bagID and rdf:ID http://www.w3.org/TR/rdf-syntax-grammar/#section-Syntax-reifying Cheers Dave
Received on Tuesday, 10 December 2002 06:33:42 UTC