- From: Mark Birbeck <mark.birbeck@x-port.net>
- Date: Tue, 9 Oct 2007 08:41:21 +0100
- To: "Karl Dubost" <karl@w3.org>
- Cc: "Ivan Herman" <ivan@w3.org>, "Sergio Fernández" <sergio@wikier.org>, public-rdf-in-xhtml-tf@w3.org
Hi Karl, You are right that this is missing from the syntax document! An oversight... What we've agreed is that the @profile value is optional. The idea is that processors that want to process all documents will not rely on @profile being set, and as you say, they may or may not find useful RDFa in a document. (A Google-style crawler might fall into this category.) Processors that do want to reduce their processing could check for the correct @profile value. These processors will obviously miss useful data that has not been marked with the RDFa @profile value, but this may well be the desired goal anyway. Certainly if you created a system that was mainly consuming your own documents you would have full control over both ends of the process. We hope we've found a way to meet most use-cases. Regards, Mark On 08/10/2007, Karl Dubost <karl@w3.org> wrote: > > > > Ivan Herman (8 oct. 2007 - 18:23) : > > However... a question. How do you detect that a document contains > > RDFa? > > What is the criteria? Do you use a profile? Or analyse the document to > > see if some of the RDFa attributes are used? > > Interesting question. What is the trigger? In the editor's draft > there is no mention of a trigger for knowing that the document > contains RDFa, which can be a benefit too. > http://www.w3.org/MarkUp/2007/ED-rdfa-syntax-20070927/ > > Maybe a way to test that is to consider that all the HTML/XHTML > document on the Web are "RDFancy". Then to test from random document > of the Web, if we get useful information most of the time, or > complete garbage. If the information is useful most of the time, the > trigger is not that important. If not, Indeed there is a need for > something. > > > Personally, I believe the profile > > http://www.w3.org/ns/rdfa/ > > should be used which has been secured by Ralph a while ago... > > At which level? profile attribute of XHTML 1.0? > The issue with the profile attribute is that in a cut and paste > scenario, people will forget to modify the "head" and/or will not > have write access to the head section of an HTML document. > > Is there a way to locally trigger the mode, in the HTML itself. > > > -- > Karl Dubost - http://www.w3.org/People/karl/ > W3C Conformance Manager, QA Activity Lead > QA Weblog - http://www.w3.org/QA/ > *** Be Strict To Be Cool *** > > > > > -- Mark Birbeck, formsPlayer mark.birbeck@formsPlayer.com | +44 (0) 20 7689 9232 http://www.formsPlayer.com | http://internet-apps.blogspot.com standards. innovation.
Received on Tuesday, 9 October 2007 07:41:30 UTC