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cc-metadata - Re: RDF within an (X)HTML Page - the Adobe way

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Subject: discussion of the Creative Commons Metadata work

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  • From: Mike Linksvayer <ml AT creativecommons.org>
  • To: discussion of the Creative Commons Metadata work <cc-metadata AT lists.ibiblio.org>
  • Subject: Re: RDF within an (X)HTML Page - the Adobe way
  • Date: Fri, 04 Jun 2004 16:51:26 -0700

Bardo Nelgen wrote:
If they use it as default mehtod for embedding XMP - why not make it default for CC-Licenses either ?

XML content in a <script> element doesn't validate unless wrapped in comments, and those will still be lost to XHTML apps not looking for data in comments, as I understand it. See for example <http://lists.w3.org/Archives/Public/public-rdf-in-xhtml-tf/2003Jun/0035.html> and previous messages in the thread.

At this point I don't think we'll change the default for publishing CC metadata until the W3C comes up with a RDF-in-XHTML recommendation. Ben Adida, CC's W3C rep, is staying on top of that process.

By the way: Does anyone know an XMP-reader, which is already capable of parsing nomal, valid RDF, which contains other tags (e.g. CC) in addition to the XMP values ??? :-|

An XMP reader (for example whatever is built into Photoshop CS) can read RDF with CC properties. See <http://creativecommons.org/technology/xmp-help#cc-panel>, which demonstrates this (it displays the value of cc:license). XMP can handle arbitary properties within the subset of RDF it supports -- that's the eXtensible bit. It may even parse arbitary RDF, ignoring unspported bits -- http://partners.adobe.com/asn/tech/xmp/pdf/xmpspecification.pdf says rdf:ID and a few others will be ignored, not cause failure.

However, I don't know of any code for a stand-alone XMP reader. You may as well use a standard RDF toolkit.

--
Mike Linksvayer
http://creativecommons.org/learn/aboutus/people#21




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