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https://issues.apache.org/jira/browse/XALANJ-2809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17941951#comment-17941951
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Martin Honnen commented on XALANJ-2809:
---------------------------------------
I now get another error
/fold-left-seq-of-stylesheets-transform4.xsl; line21; column74; XTTE0570 : A
sequence of size 2, cannot be cast to a type node()
That's is not the result I expect, I expect the transform function be run for
the input document for the samples sheet1.xsl, sheet2.xsl and sheet3.xsl, each
time passing the result of the previous transformation as the input to the next
one.
> XPTY0004 when using fold-left and XSLT defined function, followed by
> java.lang.NullPointerException
> ---------------------------------------------------------------------------------------------------
>
> Key: XALANJ-2809
> URL: https://issues.apache.org/jira/browse/XALANJ-2809
> Project: XalanJ2
> Issue Type: Bug
> Security Level: No security risk; visible to anyone(Ordinary problems in
> Xalan projects. Anybody can view the issue.)
> Components: transformation, Xalan, Xalan-CmdLine,
> Xalan-interpretive, XPath-function
> Affects Versions: The Latest Development Code
> Environment: Java 8, Windows 11
> Reporter: Martin Honnen
> Assignee: Mukul Gandhi
> Priority: Major
> Attachments: fold-left-seq-of-stylesheets-transform4.xsl,
> pass-document-node-to-xslt-function-test1.xsl, sample1.xml, sheet1.xsl,
> sheet2.xsl, sheet3.xsl
>
>
> This is a bug report against the XSLT 3.0 development branch of Xalan.
> I am still trying to use the function fold-left with some XSLT defined
> function but run into a strange error "XPTY0004 Function call argument at
> position 1 for function
> {http://example.com/mf}
> identity(), doesn't match the declared parameter type node()" followed by a
> java.lang.NullPointerException.
> {code:xml}
> <?xml version="1.0" encoding="utf-8"?>
> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> version="3.0"
> xmlns:xs="http://www.w3.org/2001/XMLSchema";
> xmlns:mf="http://example.com/mf";
> exclude-result-prefixes="xs mf">
> <xsl:output method="xml" indent="yes"/>
> <xsl:function name="mf:identity" as="node()">
> <xsl:param name="node" as="node()"/>
> <xsl:sequence select="$node"/>
> </xsl:function>
> <xsl:template match="/">
> <xsl:copy>
> <xsl:sequence select="fold-left(//*, (), function($a, $n) { ($a,
> mf:identity($n)) })"/>
> </xsl:copy>
> </xsl:template>
> </xsl:stylesheet>
> {code}
> Run that against any XML input and you will get the XPTY0004 for each element
> node in the input followed by the NullPointerException.
>
> The code runs with with Saxon HE 12.5 Java as well as SaxonJS so I think it
> is clean and proper XSLT 3.
>
> The shown code is a reduced test case whether I can get any node passed from
> fold-left to an XSLT defined function, my real use case is using fold-left to
> chain calls of the transform function, as I get the same error "XPTY0004 :
> Function call argument at position 1 for function
> \{http://example.com/mf}transform-node(), doesn't match the declared
> parameter type node()" there I hope if the simple test case can be fixed the
> real use case also works.
> For completeness I tried to attach the real use as well but somehow attaching
> currently fails. I will try to attach the file later after I have created the
> bug issue.
>
>
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