Saxon

Using Saxon 9.9.1.7, on both Java and .NET, I am trying to capture serialization properties Saxon applies to result documents created with xsl:result-document, by subclassing Serializer (the Java class) and overriding getReceiver to capture the second parameter in a field.

This works for most tests I have run, but one example where there is no xsl:output present and the xsl:result-document also have no serialization or format attributes, while Saxon serializes everything as XML, the serialization properties don't have any method set.

Example is

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="3.0">
    <xsl:mode on-no-match="shallow-copy"/>
    <xsl:template match="root/*">
        <xsl:next-match/>
        <xsl:result-document href="{local-name()}.xml">
            <xsl:copy-of select="."/>               
        </xsl:result-document>
    </xsl:template>
</xsl:stylesheet>

An input sample would be

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <foo>foo</foo>
    <bar>bar</bar>
</root>

I first though, that no xsl:output being specified, that no method is propagated to the SerializationProperties. However, a slight change to the XSLT in the form of

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="3.0">
    <xsl:mode on-no-match="shallow-copy"/>
    <xsl:template match="root/*">
        <xsl:next-match/>
        <xsl:result-document href="{local-name()}.xml">
            <result>
               <xsl:copy-of select="."/>               
            </result>
        </xsl:result-document>
    </xsl:template>
</xsl:stylesheet>

and suddenly the SerializationProperties know about method being xml.

Why is the method not being reported as xml for the first sample?