On 14/5/09 14:18, Shelley Powers wrote:
James Graham wrote:
jgra...@opera.com wrote:
Quoting Philip Taylor <excors+wha...@gmail.com>:
On Sun, May 10, 2009 at 11:32 AM, Ian Hickson <i...@hixie.ch> wrote:
One of the more elaborate use cases I collected from the e-mails
sent in
over the past few months was the following:
USE CASE: Annotate structured data that HTML has no semantics for, and
which nobody has annotated before, and may never again, for private
use or
use in a small self-contained community.
[...]
To address this use case and its scenarios, I've added to HTML5 a
simple
syntax (three new attributes) based on RDFa.
There's a quickly-hacked-together demo at
http://philip.html5.org/demos/microdata/demo.html (works in at least
Firefox and Opera), which attempts to show you the JSON serialisation
of the embedded data, which might help in examining the proposal.
I have a *totally unfinished* demo that does something rather similar
at [1]. It is highly likely to break and/or give incorrect results**.
If you use it for anything important you are insane :)
I have now added extremely preliminary RDF support with output as N3
and RDF/XML courtesy of rdflib. It is certain to be buggy.
So much concern about generating RDF, makes one wonder why we didn't
just implement RDFa...
Having HTML5-microdata -to- RDF parsers is pretty critical to having
test cases that help us all understand where RDFa-Classic and HTML5
diverge. I'm very happy to see this work being done and that there are
multiple implementations.
As far as I can see, the main point of divergence is around URI
abbreviation mechanisms. But also HTML5 might not have a notion
equivalent to RDF/RDFa's bNodes construct. The sooner we have these
parsers the sooner we'll know for sure.
Dan
