[Zope-CMF] Dublin Core

[Tres Seaver]

Ricardo Newbery wrote:

> 
> Thanks for the pointers Seb and Tres.  Now I'm looking into defining 
> some new metadata elements...
> 
> I notice that the CMF DublinCore module doesn't include the entire set 
> of metadata elements defined by the Dublin Core Metadata Initiative.  
> Why is that?


We chose initially to implement a subset of the DC, for a couple of reasons.
My initial proposal, with rationale for the subseting, is at:

  http://cmf.zope.org/rqmts/project_glossary/DublinCore


> Specifically, I notice that the 'Coverage' element is not included


Its semantics seemed hideously underspecified to me, so much so that I
couldn't imagine wanting to use it in a general-purpose CMS.  Can you 
indicate
how you intend to use it?

> and  the 'Contributor' element is in plural form, 'Contributors'.


Hmm, that may be an oversight.  We do offer alternate spellings of the date
fields (the original, unqualified 'Date' was essentially useless for our
purposes;  its semantics are too fuzzy).

> 'Relation' 
> and 'Source' is also missing but I don't need them. However, I need to 
> use 'Coverage'.

Again, if you can let us know how, that would help in thinking about
a reasonable implementation.


> Also, why the nonstandard spelling for 'Contributor'?  Doesn't that mess 
> with the motivation behind using the Dublin Core set?

> 
> Are there plans to extend the DublinCore module to support the complete 
> Dublin Core set?


We have a proposal to implement 'Relation' and 'Source', because we have
a known need for such stuff:

   http://cmf.zope.org/rqmts/proposals/dublin_core_relation

I'm willing to extend it to include 'Coverage' if you can illuminate the
need a bit, and maybe constrain the problem.

> Perhaps also including the recommended Dublin Core 
> metadata qualifiers as an option?


Not without strong motivation (e.g., a consulting gig, or a *really*
compelling use case);  "patches accepted", of course. :)

Tres.
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===============================================================
Tres Seaver                                tseaver@digicool.com
Digital Creations     "Zope Dealers"       http://www.zope.org