NullPointerException when getting Processor with XQuery

[thms-rmb]

I tested XQuery after #4 and I am getting a NullPointerException here:

expath-tools-saxon/src/main/java/org/expath/tools/saxon/model/SaxonTreeBuilder.java

Lines 37 to 38 in 909e998

	Processor processor = (Processor) ctxt.getConfiguration().getProcessor();
	DocumentBuilder builder = processor.newDocumentBuilder();

Apparently ctxt.getConfiguration().getProcessor() returns null, but I'm not sure why it does this under XQuery and not XSLT.

(I am trying this from here: https://github.com/thms-rmb/xmlkit)

[thms-rmb]

I asked about this here: https://stackoverflow.com/questions/65172038

It seems when calling net.sf.saxon.Query, the Processor object is not set on the `Configuration object, leading to this error. The solution for me was to set it manually while extending the class:

thms-rmb/xmlkit@ba21945

But I'm not sure where that leaves this though. Ideally the tree builder shouldn't rely on how you extend the net.sf.saxon.Query class, other than the fact that you're actually registering the extension function?

[adamretter]

@thms-rmb I think a good first step would be to contribute some unit tests which show the issue, then I can likely help diagnose a fix with you.