it's slightly more complex than usual in Cocoon, but I created a sample of what I think you're after.
In the sitemap:
<map:pipeline>
<map:match pattern="*.myxml">
<map:generate src="my.xml"/>
<map:transform src="sf-myxml.xslt">
<map:parameter name="myxml" value="{1}.myxml"/>
</map:transform>
<map:transform type="include"/>
<map:serialize type="xml"/>
</map:match>
<map:match pattern="myxml/**">
<map:generate src="{1}"/>
<map:transform src="{request-param:stylesheet}"/>
<map:serialize type="xml"/>
</map:match>
</map:pipeline>
So, matching *.myxml generates XML from the dynamic configuration file.
<result>
<file>
<name>a.myxml</name>
<source>b.xml</source>
<transform>c.xslt</transform>
</file>
<file>
<name>x.myxml</name>
<source>y.xml</source>
<transform>c.xslt</transform>
</file>
</result>
Using sf-myxml.xslt this is transformed to a Cinclude call:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xd="http://www.oxygenxml.com/ns/doc/xsl"
xmlns:ci="http://apache.org/cocoon/include/1.0"
exclude-result-prefixes="xs xd"
version="2.0">
<xsl:param name="myxml"/>
<xsl:template match="/result">
<xsl:copy>
<xsl:apply-templates select="file[name eq $myxml]"/>
</xsl:copy>
</xsl:template>
<xsl:template match="file">
<ci:include src="cocoon:/myxml/{source}?stylesheet={transform}"/>
</xsl:template>
</xsl:stylesheet>
by finding the right <file> element and using the <source> and <transform> elements. For example for the call "/a.myxml" this generates:
<ci:include src="cocoon:/myxml/b.xml?stylesheet=c.xslt"/>
This cocoon:/ call in the <cinclude> is then matched by the next <map:match>, where, in the above example, b.xml is transformed by c.xslt. I tried it and it works.
Here's b.xml:
<page/>
Here's y.xml:
<page title="z.myxml"/>
Here's c.xslt:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xd="http://www.oxygenxml.com/ns/doc/xsl"
exclude-result-prefixes="xs xd"
version="2.0">
<xsl:template match="page">
<html><head><title><xsl:value-of select="@title"/></title></head><body><h1><xsl:value-of select="@title"/></h1></body></html>
</xsl:template>
</xsl:stylesheet>
I get no title when calling a.myxl and a title "z.myxml" when calling z.myxml. Hope this is what you were looking for.
Regards,
Huib Verweij.