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Re: status of GRDDL for POWDER - no joy testing in Redland/Raptor

From: Phil Archer <phil@philarcher.org>
Date: Mon, 12 Jan 2009 10:05:22 +0000
Message-ID: <496B15E2.30700@philarcher.org>
To: Dan Brickley <danbri@danbri.org>
CC: Public POWDER <public-powderwg@w3.org>

Hi Dan,

After the LC period we've been concentrating on implementations - and 
they're very, very close to completion. We're finalising the schema and 
the XSLTs right now and we should be ready to set up the meeting to seek 
transition to PR at by the end of this week all being well.

Bottom line - the XSLTs will be updated v. soon, and the schema will 
then include GRDDL links to them. I'll let you know, 'cos after that, 
everything should be tickety-boo.

Phil.

Dan Brickley wrote:
> 
> 
> Hi folks
> 
> I'm trying to write a simple POWDER thing to assert that all documents 
> matching a certain URI pattern have a particular dc:publisher. My 
> understanding is that I could write a POWDER .xml file and then run a 
> GRDDL parser over it.
> 
> I've tried taking the exact example from 
> http://www.w3.org/TR/2008/WD-powder-primer-20081114 ('This is a repeat 
> of from Example 2-6') and running Redland's raptor parser over it in 
> GRDDL mode. I've tried my own POWDER XML file too, but I'm getting no 
> RDF output. Not sure if this is an issue with lack of GRDDL declarations 
>  in the ns, the parser, or my understanding. Possibly all 3 :)
> 
> rapper --trace -i grddl eg2.6.xml
> rapper: Parsing URI file:///Users/danbri/working/xmlsig/powder/eg2.6.xml 
> with parser grddl
> rapper: Serializing with serializer ntriples
> rapper: Processing URI http://www.w3.org/2007/05/powder#
> rapper: Parsing returned 0 triples
> 
> 
> Where eg2.6.xml is the following wellformed XML:
> [[
> <?xml version="1.0"?>
> <powder xmlns="http://www.w3.org/2007/05/powder#"
>       xmlns:ex="http://example.org/vocab#">
> 
>   <attribution>
>     <issuedby src="http://authority.example.org/company.rdf#me" />
>     <issued>2007-12-14T00:00:00</issued>
>     <abouthosts>example.com</abouthosts>
>   </attribution>
> 
>   <ol>
> 
>     <dr>
>       <iriset>
>          <includehosts>example.com</includehosts>
>          <includepathstartswith>/foo</includepathstartswith>
>       </iriset>
>       <descriptorset>
>         <ex:color>blue</ex:color>
>       </descriptorset>
>     </dr>
> 
>     <dr>
>       <iriset>
>         <includehosts>example.com</includehosts>
>       </iriset>
>       <descriptorset>
>         <ex:color>red</ex:color>
>       </descriptorset>
>     </dr>
> 
>   </ol>
> 
> </powder>
> 
> ]]
> 
> When I dereference the namespace I eventually find 
> http://www.w3.org/2007/05/powder/wdr.xsd ... but unless I'm mistaken, 
> this doesn't seem to have GRDDL annotations.
> 
> Thanks for any pointers on how to get this running,
> 
> cheers,
> 
> Dan
> 
> -- 
> http://danbri.org/
> 
> 
> 

-- 
Phil Archer
w. http://philarcher.org/
Received on Monday, 12 January 2009 10:06:04 GMT

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