- From: Jonas Sicking <jonas@sicking.cc>
- Date: Sat, 19 Sep 2009 00:54:25 -0700
- To: Shane McCarron <shane@aptest.com>
- Cc: Manu Sporny <msporny@digitalbazaar.com>, HTMLWG WG <public-html@w3.org>, RDFa mailing list <public-rdf-in-xhtml-tf@w3.org>
On Fri, Sep 18, 2009 at 10:52 PM, Shane McCarron <shane@aptest.com> wrote: > > > Jonas Sicking wrote: >> >> The problem is that the way HTML parsing works, markup like: >> >> <div xmlns:foo="http://namespace.example.org"> >> >> Does not parse the xmlns:foo attribute into something that "declare >> [an] XML Namespace mapping". Specifically, it does not create an >> attribute in the "http://www.w3.org/2000/xmlns/" namespace. Or an >> attribute with a "xmlns" prefix and "foo" localName. It creates an >> attribute in the null namespace, with a localName that is "xmlns:foo". >> >> So *an* attribute shows up in the DOM. Just not an attribute that >> declares a XML Namespace. >> >> Now, we can argue if that is how HTML5 should define parsing. But that >> is how it currently defines it. And as far as I can see the HTML+RDFa >> spec does not seem to change that. >> > > Andy that's fine. We don't care. RDFa doesn't use namespaces. RDFa uses > vocabularies and prefix mappings. As long as an implementation can discover > the prefix mappings and transl;ate vocabulary item references into those > mappings, we are good. As far as I can tell, that means we are good > everywhere. Actually, where is it defined how prefixes are mapped? As far as I can see the XHTML+RDFa spec only defines how prefixes are mapped in an XML document. I.e. how a serialized XML document is to be processed. Obviously, in the case of a HTML document we don't have a XML document. So where is prefix mapping defined? The question equally applies equally how to do prefix resolution in a DOM. I suspect the intent is that mapping was intended to be defined through the DOM since the spec asks for xmlns: prefixed attributed to be preserved in the DOM. I think this is a good idea since the HTML5 spec defines how to map a HTML document to a DOM (the HTML parsing algorithm). This would result in prefix mapping being defined for both HTML documents and DOMs. However as far as I can see the spec doesn't actually define how to do prefix mapping in a DOM. Or am I missing something? / Jonas
Received on Saturday, 19 September 2009 07:55:33 UTC