[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: RDF Question: about syntax of rdf container objects (Bag, Alt,
yOn Thu, 8 Apr 1999, Roger L. Costello wrote: > Dan Brickley wrote: > > > > Having an rdf:type property pointing to rdf:Bag is just RDF's way of > > telling us that the anonymous resource "is A" rdf:Bag. > > > > Is it *always* the case that if an RDF model has a resource with a > property rdf:type whose value is foo then rather than: > > <rdf:Description [attrs]> > <rdf:type resoure="foo"> > [other properties] > </rdf:Description> > > the syntax is: > > <foo> > [other properties] > </foo> > > Example: > > Rather than: > > <rdf:Description > > <rdf:type resoure="rdf:Bag"> > [other properties] > </rdf:Description> > > the syntax is: > > <rdf:Bag> > [other properties] > </rdf:Bag> > Yep. From: http://www.w3.org/TR/REC-rdf-syntax/ 2.2.2. Basic Abbreviated Syntax While the serialization syntax shows the structure of an RDF model most clearly, often it is desirable to use a more compact XML form. The RDF abbreviated syntax accomplishes this. As a further benefit, the abbreviated syntax allows documents obeying certain well-structured XML DTDs to be directly interpreted as RDF models. Three forms of abbreviation are defined for the basic serialization syntax. [...] The third basic abbreviation applies to the common case of a Description element containing a type property (see Section 4.1 for the meaning of type). In this case, the resource type defined in the schema corresponding to the value of the type property can be used directly as an element name. [...] So, yes, a general XML/RDF parser would need to handle such cases. The spec gives EBNF for these constructs in section 2.2.2 Dan -- Daniel.Brickley@b... Institute for Learning and Research Technology http://www.ilrt.bris.ac.uk/ University of Bristol, Bristol BS8 1TN, UK. phone:+44(0)117-9287096 xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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