Re: Dublin Core Meta Data Profile?

On Mon, 2007-06-25 at 14:43 -0400, Harry Halpin wrote:
> In process of doing PR Request, I'm noting that we have as part of
> charter [1] that we have "bootstrapping adoption" with the Dublin Core
> Metadata profile[2]. I assume this means creating a GRDDL transform for
> them and asking them to put it in their profile. Has anyone done this?

Thinking out loud: depending on how much of DC you attempt to map to RDF
(from XML) this could be straightforward.  4Suite has [1] (in its code
base) a limited set of XPath mappings from XML elements to Dublin Core
RDF which could be used as the basis of a rudimentary GRDDL transform to
do the same.  It can be ported to a simple XSLT stylesheet.  The mapping
(paraphrased in pseudo-code) is:

for title in document($uri)//dc:title/text():
  create triple ($uri, dc:title, title)
for subject in document($uri)//dc:subject/text():
  create triple ($uri, dc:subject, subject)
for description in document($uri)//dc:description/text():
  create triple ($uri, dc:description, description)

Where $uri is the URI of the source document

I can imagine a 'library' transform which attempts to map *all* DC
metadata properties over directly, I'm just not sure how it would
determine the subject URI *in context* (since XSLT doesn't have a
fine-grained notion of a base URI) other than the above heuristic which
just assumes all the DC RDF statements are about the source document
(for instance):

<xsl:template match="/">
  <rdf:RDF>
    <xsl:apply-templates select="//dc:*"/>
  </rdf:RDF>
</xsl:template>

<xsl:template match="dc:*">
  <rdf:Description rdf:about="">
    <xsl:copy>
      <xsl:value-of select="text()"/>
    </xsl:copy>
  <rdf:Description>
</xsl:template>


[1]http://cvs.4suite.org/viewcvs/*checkout*/4Suite/Ft/Server/Share/Data/dublin_core.docdef

-- 
Chimezie Ogbuji
Lead Systems Analyst
Thoracic and Cardiovascular Surgery
Cleveland Clinic Foundation
9500 Euclid Avenue/ W26
Cleveland, Ohio 44195
Office: (216)444-8593
ogbujic@ccf.org


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Received on Monday, 25 June 2007 19:14:47 UTC