Saxon » SaxonC

Hi, thanks for the quick feedback!

I already looked into the accompanying or sample code that you mentioned. Since you mention "schematron stylesheet", does that mean I should just use the PyXslt30Processor or PyXsltProcessor (not sure which one) with the schematron as a stylesheet? I did try that, and got the response that it wasn't a valid stylesheet.

When using the PySchemaValidator I immediately got the response that this was not supported in the unlicensed version.

The PyXslt30Processor API is designed for XSLT 3.0. Therefore I suggesting using that API.

The PySchemaValidator API is for XML Schema Definition (XSD) validation which requires EE license, therefore for schematron validation you would not require this API.

Martin, the way Schematron validation typically works is that you run a (schematron-supplied) XSLT transformation that takes your schematron rules as input and produces an XSLT stylesheet as output, and then you run this XSLT stylesheet against your source document. As far as Saxon is concerned, both processes are simply regular XSLT transformations, that can be run using the standard XSLT transformation API.

OK, then there's probably some issue in the way that I'm trying to use the schematrons.

Small snippet:

import saxonc

src = "<source_file>.xml"
sch = "<schematron_file>.sch"


with saxonc.PySaxonProcessor(license=False) as proc:
    xsltproc = proc.new_xslt30_processor()
    result = xsltproc.transform_to_string(source_file=src, stylesheet_file=sch)
    print(result)

this gets me as output:

Static error at schema on line 5 column 111 of <schematron_file>.sch:
  XTSE0150: The supplied file does not appear to be a stylesheet
None

So, in principle this should work, but you think there's an issue with the schematron structure itself?

Note that we don't provide support for third-party applications built on top of Saxon, and that includes Schematron.

You might find the diagram in the article at https://www.xml.com/pub/a/2003/11/12/schematron.html useful to explain the Schematron processing model. (Scroll down 60% of the page)

You need to do two transformations: the first takes the schematron schema (.sch) as its source document (not as its stylesheet!) and produces as output a stylesheet, which is used to perform the second transformation.