Sam Ruby: creativeCommons RSS validation

creativeCommons RSS validation

Fri 20 Dec 2002 at 14:06

I just committed code which validates the new creativeCommons rss module. What this entails is the following:

Ensuring that the value of the license element is a fully qualified (i.e., non-relative) rfc2396 URI.
Warning if the creativeCommons prefix is used to indicate any namespace other than http://backend.userland.com/creativeCommonsRssModule.
Warning if both the creativeCommons:license and cc:license elements are used.

This continues the effort to codify RSS Best Practices. The first bullet above is the same concern as the one expressed on <a> and <img> tags previously. The second is to avoid confusion. The third is because while the following are both valid RSS 2.0, there is no precidence rule used to arbitrate between them should they differ:

<cc:license rdf:resource = "http://www.creativecommons.org/licenses/by-nc/1.0" />

<creativeCommons:license> http://www.creativecommons.org/licenses/by-nc/1.0 </creativeCommons>

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at 14:57

I'm not at all keen on the Creative Commons encouraged practise of embedding RDF in a comment on an HTML page, for the same reason I dislike TrackBack doing it: When an XML processor parses an XHTML document there is no garauntee that the processor will have access to the comments. I've written this complaint up (and suggested an alternative) on my blog.

Posted by Simon Willison at 18:19

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creativeCommons RSS validation

Fri 20 Dec 2002

When Idealism trips, and flounders

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