[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: RDDL and user interface
Jonathan Borden (jonathan@o...) wrote: > > Yeah ok, centralized probably isn't the right word here, and I > > didn't mean to imply that the language itself is centralized. > > Just I think there needs to be a way for third parties to > > associate resources with a namespace in such a way that they can > > be found using just the namespace. > > OK, what are the rules by which this process is carried out. Who gets > to arbitrate when there are competing visions of what is associated > with what. Decide this, and you can pick which system to use. I was thinking like you describe below, priority goes to resources coming from the namespace in question, but allow for local override. > >> On the other hand if you really want to disassociate information about > >> namespace URIs from mechanisms used to dereference the URI e.g. DNS > >> HTTP etc, RDF is an excellent choice. > > > > Will you talk more about this? The thing that made RDDL > > attractive is: > > > > * it's designed specifically to describe a directory of resources > > associated with a namespace > > * nature/purpose are perfect > > You say "a" directory of resources? Then RDDL is an excellent choice. > You can either use the directory provided by the owner of the DNS entry > associated with the namespace URI or use xmlcat or something similar to > provide a local override to associate whatever particular directory you > wish with whatever particular URI you wish. There are two parts here. The directory of resources is hosted on any host, regardless of what namespace it is associated with. Then a server grabs the descriptor and all other descriptors for a particular namespace and merges them into a complete map of all resources associated via multiple descriptors. So perhaps RDDL would work for the distributed descriptors, and use some kind of simple derivative for the mash. > The more general RDF idea is that there is an RDF triple store that > contains a whole mash of triples (associations), not necessarily from a > single document but perhaps from any number of documents. Now you can > certainly extact a set of RDF triples from a RDDL document e.g. > rddl2rdf.xslt in the case of RDDL, if you are looking for the more > general RDF "anyone can say anything about anything" idea of what > defines a namespace, then if anyone can add their triples to an RDF > store, then anyone can define "what is in" the namespace. Heh, ok, well, I'm almost done with the implementation using neither RDF or RDDL. I used just vanilla XML, but with a note that the project at this stage is experimental, and using RDDL or RDF in the future might be a good option. Using an RDF store sounds pretty interesting. Eric
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