I don't understand the difference between two ways of loading an XML
file into a variable (see A and B below). Case A used to work with old
saxon 8.9, but with 9.2 only B is successful.
I would expect B to fail in the case that the file is not there
(If you have defined $global.setup.file) as in A
you then have effectively
<xsl:variable name="global.setup"
as="document-node(element(global-setup))">
<xsl:copy-of select="$global.setup.file"/>
</xsl:variable>
and the type xs:string doesn't match document-node()
(A) is similar but being a single xpath expression it is perhaps easier
for the system to statically detect the type might be string, not sure.
If I omit the type declaration in A, the rest of the stylesheet is
nevertheless working correctly. So at a certain stage, what saxon sees
as a xs:sting is converted into a tree.
If you use xsl:variable with emlement content but no as attribute it
always makes a document node with children the content of the
xsl:variable so
<xsl:variable name="global.setup"/>
<xsl:copy-of select="trace($global.setup.file,'Configuration
File $global.setup.file was not readable (missing or not valid)!')"/>
</xsl:variable>
makes global.setup into a document node with a single text node child,
so it macthes document-node() but not of course
document-node(element(global-setup))
David
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