[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: My proposal: Implicit namespaces
On Thu, Aug 06, 2009 at 03:16:58PM +0100, Dave Pawson wrote: > On 08/06/2009 10:21 AM, Michael Kay wrote: [...] >> Another way to achieve this goal is to allow the designer of an XML >> vocabulary (=a set of namespaces) to define >> > >(a) a list of predeclared namespace prefixes for that vocabulary >> (b) a list of local names that are known to be in each of those namespaces >> >> When invoking an XML parser, the user should be able to reference this >> "vocabulary definition", [...] >> An "nnML parser" is then an XML parser with built-in knowledge of the >> nnML vocabulary definition. This is very close to the proposal I've made... although much more complex than Tim Bray's idea. > So for docbook you'd have an author include all 300+ namespaced elements ? You only need to list those elements that can occur embedded in another vocabulary, plus the top-level element. For example, a list item might not make sense without a containing list. So, a docbook list would automatically introduce the docbook namespace for all the elements it contained (until you got down to ones that implied some other namespace, such as "svg" perhaps). > Fine if Norm had them somewhere on the net I could reference them, > but simply not practical to inline them in the document surely? You'd have a reference, wich could be cached. The biggest difficulty I had was software that refused to process XML documents with qnames a:b where "a" had not been declared using xmlns; I'd thought of allowing some other prefix such as "_" but then an escaping machanism becomes needed for pepole already using "_" in names... In particular, I anted a proposal that could be made to work without undue emotional trauma (to quote Jon Bentley) in today's Web browsers. Liam -- Liam Quin, W3C XML Activity Lead, http://www.w3.org/People/Quin/ http://www.holoweb.net/~liam/ * http://www.fromoldbooks.org/
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