[
Lists Home |
Date Index |
Thread Index
]
[Eric van der Vlist]
> ...
> Thomas,
>
> This sounds like a really innovative use of namespace prefixes! What about
> languages such as Schematron and Relax NG (not to mention Examplotron
> which is worse) which use to use a default namespace?
> Also, let's take a RSS 1.0 document:
>
> <?xml version="1.0" encoding="utf-8"?>
> <rdf:RDF
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
> xmlns:dc="http://purl.org/dc/elements/1.1/";
> xmlns:sy="http://purl.org/rss/1.0/modules/syndication/";
> xmlns:co="http://purl.org/rss/1.0/modules/company/";
> xmlns:ti="http://purl.org/rss/1.0/modules/textinput/";
> xmlns="http://purl.org/rss/1.0/";
> >
> <channel rdf:about="http://meerkat.oreillynet.com/?_fl=rss1.0";>
> <title>Meerkat</title>
> <link>http://meerkat.oreillynet.com</link>
> <description>Meerkat: An Open Wire Service</description>
> <dc:publisher>The O'Reilly Network</dc:publisher>
> <dc:creator>Rael Dornfest (mailto:rael@oreilly.com)</dc:creator>
> <dc:rights>Copyright © 2000 O'Reilly & Associates,
> Inc.</dc:rights> <dc:date>2000-01-01T12:00+00:00</dc:date>
> <sy:updatePeriod>hourly</sy:updatePeriod>
> <sy:updateFrequency>2</sy:updateFrequency>
> <sy:updateBase>2000-01-01T12:00+00:00</sy:updateBase>
> ...
>
> How do you say that's its a RSS document?
> ...
That is a different kind of thing, Eric, that's all. I wasn't trying to
identify document types. But even in this example, say I wanted to be sure
what dc:publisher really was supposed to be, so I can ut the right data in
there. "dc" is pretty familiar - I would probably say to myself, "hey, I
bet that is Dublin Core, let's see, the URL has purl.org/dc, so I am going
to pull out my Dublin Core info and check it out" (and the first thing I
will do is to check the namespace, because I don't remember it exactly).
Now the next ten times I see an RSS message like this, I will expect that
"dc" continues to mean Dublin Core, and this will be useful for me. But it
will not help me recognize a RSS 0.92 document. You are very right about
that, but that is a different task.
|
