I'm trying to create a XSLT function that takes in an array and an integer (representing a position) and returns the element at the given position. This is what I have so far:
<xsl:function name="getArrayPosition" as="item()*">
<xsl:param name="position"/>
<xsl:param name="srcCodesArray" as="item()*"/>
<xsl:value-of select="$srcCodesArray[$position]"/>
</xsl:function>
My input will be something very simple, such as
<srcCodes>
<item>Test1</item>
<item>Test2</item>
</srcCodes>
If you pass in an xs:integer then your code should work to select an item by its position. But I would suggest to simply declare the variable of that type e.g.
<xsl:param name="position" as="xs:integer"/>
(where you put the namespace declaration xmlns:xs="http://www.w3.org/2001/XMLSchema" on the xsl:stylesheet), then it should work even if string values are passed in that can be cast to an integer or a node whose string value can be cast to an integer.
And of course doing <xsl:value-of select="$srcCodesArray[$position]"/> does not return the item itself but rather creates a text node with the string value of the item. So you want
<xsl:sequence select="$srcCodesArray[$position]"/>
instead.
Finally I would suggest to learn and use the proper terminology, the XSLT/XPath/XQuery data model does not have any arrays, it has sequences.
