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https://issues.apache.org/jira/browse/XALANJ-2808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17941225#comment-17941225
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Mukul Gandhi commented on XALANJ-2808:
--------------------------------------
[~martin.honnen]
You're probably right.
For now, I'd like to suggest a workaround for this use case with Xalan-J's XSL
3 implementation as follows (using an XPath inline function expression wrapper
to invoke an XSL stylesheet function):
<?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:fn0="http://fn0";
exclude-result-prefixes="xs fn0">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="/">
<result>
<xsl:value-of select="fold-left(1 to 5, 0, function($a as
xs:integer, $b as xs:integer) as xs:integer { fn0:add($a, $b) })"/>
</result>
</xsl:template>
<xsl:function name="fn0:add" as="xs:integer">
<xsl:param name="a" as="xs:integer"/>
<xsl:param name="b" as="xs:integer"/>
<xsl:sequence select="$a + $b"/>
</xsl:function>
</xsl:stylesheet>
Hoping that, Xalan-J's XSL 3 implementation shall solve the bug report provided
by you within this jira issue.
Many thanks.
> can't pass XSLT defined xsl:function to fold-left: FORG0006 : The third
> argument to function call fn:fold-left is not a function item, or cannot be
> coerced to a function item
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: XALANJ-2808
> URL: https://issues.apache.org/jira/browse/XALANJ-2808
> 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, XPath-function
> Affects Versions: The Latest Development Code
> Environment: Java 8, Windows 11
> Reporter: Martin Honnen
> Assignee: Mukul Gandhi
> Priority: Major
> Attachments: fold-left-pass-user-defined-xslt-function-test1.xsl,
> fold-left-seq-of-stylesheets-transform4.xsl
>
>
> This is a bug report against the XSLT 3 development branch of Xalan.
> I am trying to pass a function defined in XSLT with xsl:function to the
> higher-order function fold-left but Xalan doesn't seem to support that so
> far, I get " FORG0006 : The third argument to function call fn:fold-left is
> not a function item, or cannot be coerced to a function item".
> An XSLT stylesheet is attached, it can be run against the file
> src/test/resources/fn_fold_left/test1_a.xml in the Xalan branch.
> In my view the function call should work and the result should be e.g.
> {code:xml}
> <?xml version="1.0" encoding="UTF-8"?>
> <result>
> <val1>210</val1>
> <val2>210</val2>
> </result>
> {code}
> I get the same problem with more complex code trying to use the transform
> function, the stylesheet is also attached.
>
>
>
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