[ckan-dev] API response as XML?

Tue Oct 4 11:54:15 UTC 2011

Thanks both for the info about the RDF store and its API - If I understand
this correctly, this would require CKAN metadata (or a subset of it mapped
to RDF vocabularies) to be first exported to the RDF store from where it can
be queried using this API .  As William says, although RDF-XML is indeed XML
it is hard to navigate directly without first added to ta triple store. An
alternative would be to query the RDF store directly with SPARQL  and use
the the XML Sparql Result .

However this does not really meet the need of developers using XML languages
such as XQuery and XSLT, requiring access to the CKAN metadata in exactly
the same structure as is provided currently as JSON.  In my own work, I am
developing server-based applictaions using an XML database (eXist) and
XQuery.   I have written a hack parser of the JSON in XQuery to get going,
but it is  more efficient  and in my case more complete  if data is provided
directly as XML as an alternative to JSON, in the same structure as the JSON
but using XML notation.  In languages like PHP and Python, the structured
data has to be parsed to create  internal objects so work is needed whether
the tansport format is JSON or XML. An XML database can simply store and
access the XML documents directly, so its more efficient if the data feed is
output as XML.

Chris
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