How to extract data from array in xslt 3.0? - arrays

Question

I am trying to fetch data from array list, I'm using xslt 3.0 (saxon-HE v11.4 library) to convert json to xml in Java.
If data in array list is empty string then space should appended in the required output.
Below are required details:
sample json input:
{
"employee":{
"id":["1","2",""]
}
}
required output:
<employee>
<id>
<id indexarray="0">1</id>
<id indexarray="1">2</id>
<id indexarray="2"> </id>
</id>
<name>
<name indexarray="0">a</name>
<name indexarray="1"> </name>
<name indexarray="2"> </name>
</name>
</employee>
tried below code
<id>
<xsl:for-each select="$employee?id?*">
<xsl:choose>
<xsl:when test="$employee?id?*!=''">
<id indexarray="{position()-1}">{.}</id>
<xsl:otherwise>
<id indexarray="{position()-1}"> </id>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each>
</id>
getting output as below:
<id>
<id indexarray="0">1</id>
<id indexarray="1">2</id>
<id indexarray="2"/>
</id>
Any help is appreciated.

Answer 1

For Saxon Java or C or CS the following should give you an idea:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="3.0"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="#all"
expand-text="yes">
<xsl:output indent="yes"/>
<xsl:template match=".[. instance of map(*)]">
<Details>
<xsl:iterate select="?employee?id?*">
<name indexarray="{position() - 1}">{if (. = '') then ' ' else .}</name>
</xsl:iterate>
</Details>
</xsl:template>
</xsl:stylesheet>
SaxonJS seems to have a bug https://saxonica.plan.io/issues/5739 (at least as far as I have tested in 2.5) that somehow causes the ' ' to not being output as part of the element content.