After studying the http://www.w3.org/TR/xslt20/ working draft and much
experimentation, I am not able to get xsl:namespace to create a
namespace node in the result document using Xalan Java 2.6.0 or Xalan
Java 2.2.Dll.
That's because Xalan doesn't implement XSLT 2.0. I would expect it to give
you an error message when you use the xsl:namespace instruction.
<xsl:template match="/">
<xsl:copy-of select="xalan:checkEnvironment()"/>
<xsl:element name="xsl:stylesheet">
<!-- I expect to see a xmlns:test='...' in the
resulting xsl:stylesheet tag -->
<xsl:namespace name="test"
select="'http://www.test.com/test'"/>
<xsl:apply-templates />
</xsl:element>
</xsl:template>
You mentioned that I would need to also use the
xsl:namespace-alias. Can
you explain more on this as I am not able to find any reference to how
xsl:namespace and xsl:namespace-alias work together?
They don't work together. As I think I said, xsl:namespace-alias only
affects the results of literal result elements.
For example, the following:
<xsl:stylesheet
version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:xalan="http://xml.apache.org/xalan";
xmlns:test="http://www.test.com/test";
xmlns:cxsl="copy-XSL-nodes"
>
<xsl:namespace-alias stylesheet-prefix="cxsl" result-prefix=
"xsl"/>
<xsl:template match="/">
<xsl:copy-of select="xalan:checkEnvironment()"/>
<cxsl:stylesheet>
<xsl:namespace name="google"
select="'http://www.google.com/nothing'"/>
<xsl:apply-templates />
</cxsl:stylesheet>
</xsl:template>
</xsl:stylesheet>
1) The above copied all namespaces to the result document even though
I'm not using xmlns:test.
Why did xmlns:test show up?
cxsl:stylesheet is a literal result element. When an LRE is evaluated, all
its in-scope namespaces (other than those listed in exclude-result-prefixes)
are copied to the result tree.
And why does the xsl:element not have the same behavior?
Because that's the way it's specified.
2) I expected to see xmlns:google='...' in the cxsl:stylesheet node in
the result document. Of course, it is not there.
I'm wondering why?
My only surprise here is that Xalan doesn't error on this stylesheet. The
rule is that an XSLT 1.0 processor, given a stylesheet that says
version="2.0", should give a run-time error if you try to execute an
instruction in the XSLT namespace that hasn't been defined in the XSLT 1.0
specification, unless it has an xsl:fallback child element.
Michael Kay
http://www.saxonica.com/
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