On Fri, 08 Mar 2019 12:49:28 +0100,
Mukul Gandhi gandhi(_dot_)mukul(_at_)gmail(_dot_)com wrote:
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Hi all,
I find the XPath 3.1 function json-to-xml() quite useful. It can
convert any JSON input to an XML representation. But I'm not
convinced that XPath 3.1's xml-to-json() function (as defined in
the spec) is much useful.
It is very useful to me because it gives full control over the JSON
output.
At work we recently started to publish descriptions of digital objects
as IIIF Manifests [1]. IIIF Manifest is a JSON-based metadata format,
the source of the object descriptions is in XML.
Example: Manuscript Cod. Guelf. 35 Helmst.
XML:
https://github.com/dmj/diglib-iiif/blob/master/examples/mss/35-helmst/mets.xml
JSON: http://iiif.hab.de/object/mss_35-helmst/manifest.json
XSL:
https://github.com/dmj/diglib-iiif/blob/master/src/IIIF/Mapper/METS2IIIFv2.xsl
Not sure if a 'generic' XML to JSON conversion would be of much
help. Being explicit about the JSON structure makes the transformation
manageable.
Best,
-- David
Taking an example from XPath 3.1 F&O spec, the following XML document
<array
xmlns="http://www.w3.org/2005/xpath-functions";><number>1</number><string>is</string><boolean>1</boolean></array>
converts into following JSON by the function xml-to-json(),
[1,"is",true]
(which is fine)
But as per the XPath 3.1 F&O spec, simple XML documents like,
<root>
<val>1</val>
<val>2</val>
<val>3</val>
<val>4</val>
</root>
cannot be converted into JSON, by the function xml-to-json(), since the XML
input doesn't conform to structure like <array>, <number>, <string> etc
(which looks to me, a very limited capability given to the xml-to-json()
function).
Any comments would be useful.
--
Regards,
Mukul Gandhi
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David Maus M.A.
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