In the sample below, the code xmi:type="{@xmi:type}" always generates the error "javax.xml.transform.TransformerException: Prefix must resolve to a namespace: xmi"
How can i solve this (how can i get the value of a attribute named "@xmi:type") ?

(name="{@name}" works fine, the only problem is the xmi:type="{@xmi:type}")

Plz help, i really need this :-p

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output indent="yes" method="xml" encoding="UTF-8"/>
    <xsl:template match="ownedMember">
        <ownedMember name="{@name}" xmi:type="{@xmi:type}"/>
    </xsl:template>
</xsl:stylesheet>

You need to declare the namespace in your stylesheet, e.g.

xmlns:xmi="http://some.namespace.uri/"

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

Ty very much Mr. Michael Kay, now it works! (xmlns:xmi="http://schema.omg.org/spec/XMI/2.1")

However, plz help me with this colateral effect:

Using the code:
<xsl:template match="ownedMember">
   <ownedMember name="{@name}" xmi:type="{@xmi:type}"/>
</xsl:template>

I am getting the result:
<ownedMember xmlns:xmi="http://schema.omg.org/spec/XMI/2.1" xmi:type="uml:DataType" name="String"/>

Well, i dont want the "xmlns:xmi" attribute to be coppied to any <ownedMember> tag it generates. The proper result would be <ownedMember xmi:type="uml:DataType" name="String"/>

Any way to fix this?

Ty again!

If your output has an attribute named xmi:type, then it must declare the xmi namespace, otherwise it wouldn't be valid XML output.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference