Fetch JSON from an API

[Oleksii]

I need to get a JSON file from API like this http://dme-intern.mozarteum.local/digit ... -info/4087
As far it seems that the extension

Code: Select all

dp:url-open

would yield the needed result:
(cf. https://www.ibm.com/docs/en/datapower-g ... dpurl-open)

However, executing of this code

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<?xml version="1.0" encoding="UTF-8"?>
<stylesheet exclude-result-prefixes="xs xd dme functx dp" version="3.0"
  xmlns:dp="http://www.datapower.com/extensions" extension-element-prefixes="dp"
  xmlns="http://www.w3.org/1999/XSL/Transform" xmlns:dme="http://www.mozarteum.at/ns/dme"
  xmlns:functx="http://www.functx.com" xmlns:map="http://www.w3.org/2005/xpath-functions/map"
  xmlns:xd="http://www.oxygenxml.com/ns/doc/xsl" xmlns:xi="http://www.w3.org/2001/XInclude"
  xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xpath-default-namespace="http://www.music-encoding.org/ns/mei">

  <template match="/">
    <result-document href="out.txt">
      <dp:url-open target="http://dme-intern.mozarteum.local/digital-editions/api/work-info/4087"
      > </dp:url-open>
    </result-document>
  </template>

</stylesheet>

triggers a Saxon error "Unknown extension instruction".
I suppose the extension should be declared somewhere. Am I correct? How to do it in oXygen (25.0, build 2023013006)?
P.S. I've searched in the Oxygen documentation for "Saxon extension" and also Saxon documentation like this section:
https://www.saxonica.com/html/documenta ... nsibility/
but did not find what I need.

Regards,
Oleksii

[xephon]

Hi,
I'm not familiar with this extension. What we do is to download the JSON with curl from Apache Ant first. Then we convert the JSON to XML and then we operate normally on the XML. This is surely the slowest solution, but very easy to maintain.
Best regards

[Oleksii]

Thank you for the feedback!
Currently I suppose to go this path: https://stackoverflow.com/a/75661104/7315908