Developer discussion for Creative Commons technology and tools

[Nathan Yergler <nathan AT creativecommons.org>]

Hi Maarten,

We do not currently have an XSD for the CC namespace, so assuming you
can include RDF directly, that seems like the easiest way to get
started.  Note that I'm not an expert on OAI-PMH, so I'm not certain
that's possible.

That said, the example you gave seems a little strange to me.  In the
rdf:RDF element, you declare the rdf as
"http://www.w3.org/1999/02/22-rdf-syntax-ns#";.  Under normal RDF/XML
rules (assuming those apply here) "rdf:attributionName" would be
interpreted as http://www.w3.org/1999/02/22-rdf-syntax-ns#attributionName.
 I don't think that's what you're going for.  I'd expect to see
something like:

 <rdf:RDF
xmlns:rdf=”http://www.w3.org/1999/02/22-rdf-syntax-ns#”
xmlns:cc="http://creativecommons.org/ns#";>

and then "cc:attributionName", "cc:attributionUrl", etc.  I'm also not
clear what the point of xsi:schemaLocation is on rdf:RDF.

Apologies if my comments reveal some deep-seated misunderstanding of
OAI-PMH.  It'd be great to have a functional example of CC REL in
OAI-PMH, so I'd love to work through the issues and get this
documented.

Regards,

Nathan


On Mon, Jun 28, 2010 at 7:35 AM, Maarten Zeinstra <mz AT kl.nl> wrote:
> Hello list,
> I'm trying to make an implementation of ccREL for OAI-PMH to communicate
> specific ccREL information. I could not find examples or explanations how
> this could be added so I thought I post it on the list.
> I've used the standard RDF implementation to bypass the need to have an xsd,
> which as far as I know there is none of ccREL is there?
> That would result to a record that would like this? Wouldn't it?
> <record>
> <header>
> <identifier>...</identifier>
> <datestamp>1962-05-04T00:00:00Z</datestamp>
> </header>
> <metadata>
> <oai_dc:dc xsi:schemaLocation="
> http://www.openarchives.org/OAI/2.0/oai_dc/
> http://www.openarchives.org/OAI/2.0/oai_dc.xsd";>
> ....
> </oai_dc:dc>
> <rdf:RDF
> xmlns:rdf=”http://www.w3.org/1999/02/22-rdf-syntax-ns#”
> xsi:schemaLocation=
> ”http://www.w3.org/1999/02/22-rdf-syntax-ns#
> http://creativecommons.org/ns#”>
> <RDF:attributionName>
> [maker]
> </RDF:attributionName>
> <RDF:attributionURL>
> [locatie op openbeelden.nl]
> </RDF:attributionURL>
> <RDF:license>
> [licentie url]
> </RDF:license>
> </rdf:RDF>
> </metadata>
> </record>
> Best,
> Maarten Zeinstra
> Kennisland | Knowledgeland
>
> T: +31.20.575.6720 | E: mz AT kl.nl
> www.kennisland.nl | www.knowledgeland.org
>
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