Martin Honnen created XALANJ-2738:
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Summary: getting error "The 1st argument of array:get function
call, needs to be an xdm array" on map:get of XDM map returned by parse-json
which should be XDM array
Key: XALANJ-2738
URL: https://issues.apache.org/jira/browse/XALANJ-2738
Project: XalanJ2
Issue Type: Bug
Security Level: No security risk; visible to anyone (Ordinary problems in
Xalan projects. Anybody can view the issue.)
Components: Xalan-interpretive
Affects Versions: The Latest Development Code
Environment: Windows 11, Java 8
Reporter: Martin Honnen
Attachments: parse-json-test1.xsl, xml-sample-with-json-data1.xml
This is a bug report on the XSLT 3.0 development branch of Xalan.
I have tried to use an XPath 3.1 array function like array:get on the result of
calling map:get on the result of parse-json and while that works fine in an
XSLT 3 processor like Saxon HE 12 for Xalan it fails with "The 1st argument of
array:get function call, needs to be an xdm array".
Here is the code, XML sample:
{code:java}
<root>
<data>{ "foo" : "bar", "data" : [1,2,3] }</data>
</root>{code}
XSLT:
{code:java}
<?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:map="http://www.w3.org/2005/xpath-functions/map";
xmlns:array="http://www.w3.org/2005/xpath-functions/array";
exclude-result-prefixes="xs map array">
<xsl:output method="html" indent="no"/>
<xsl:template match="@* | node()" name="identity">
<xsl:copy>
<xsl:apply-templates select="@* | node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="data">
<xsl:call-template name="identity"/>
<xsl:variable name="json-map" select="parse-json(.)"/>
<xsl:comment>
<xsl:value-of select="array:get(map:get($json-map, 'data'), 1)"/>
</xsl:comment>
</xsl:template>
<xsl:template match="/">
<xsl:copy>
<xsl:apply-templates/>
<xsl:comment>Run with <xsl:value-of
select="system-property('xsl:vendor')"/> at <xsl:value-of
select="current-dateTime()"/></xsl:comment>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
{code}
Results in error
{noformat}
file:///C:/Users/marti/IdeaProjects/xalan-java/../../OneDrive/Documents/xslt/blog-xslt-3-by-example/xalan-xslt3-tests/parse-json-test1.xsl;
Zeilennummer21; Spaltennummer72; javax.xml.transform.TransformerException:
FORG0006 : The 1st argument of array:get function call, needs to be an xdm
array{noformat}
The expected result is the value 1 in the comment as the expression
`array:get(map:get($json-map, 'data'), 1)` should just select the XDM array and
read out its first array item, the number value 1.
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