Re: XProc and iXML

On 05/02/2024 15:29, Piez, Wendell A. (Fed) wrote:
>
> Dear XProc friends,
>
> In a repository I have started collecting tools, utilities and use
> patterns related to iXML (Invisible XML):
> https://github.com/usnistgov/ixml-breadboard
>
> This includes XProc materials, building on Norm’s fantastic work at
> nineml.org and others.
>
> There is one thing I can’t get working yet, however, under XML
> Calabash using Saxon-HE, namely configure Saxon’s extension
> functionality to use Norm’s CoffeeSacks XSLT extension. (Saxon-HE is
> extensible only by means of an initialization called either
> programmatically or via an -init flag). Here is an XProc:
>
> https://github.com/usnistgov/ixml-breadboard/blob/main/src/mini/invisible-saxon.xpl
>
> Questions:
>
>  1. Leaving aside XML Calabash (Norm being pleasantly engaged
>     otherwise), is there anything I can do to make this work using
>     XProc 1.0? am I missing something?
>  2. Should I be doing this under XProc 3.0? Does Morgana (or any XProc
>     3.0 processor) permit me to configure Saxon-HE and distribute an
>     all-open source, unencumbered XProc runtime to users of pipelines
>     with these dependencies, including iXML?
>

I think you don't need to write Java code to have Saxon HE use extension
functions from a Java library, you can also use a Saxon configuration
file e.g.
https://www.saxonica.com/html/documentation12/configuration/configuration-file/index.html

   <resources>
     ..
<extensionFunction>s9apitest.TestIntegrationFunctions$SqrtFunction</extensionFunction>
     ..
   </resources>


So that is how I would hope you could do it with an XProc 1 or 3
processor using Saxon.