how to get the identity transformation to stop outputting extra 'xmlns:' attrib ? _clb_

[Chris Bedford]

Hi:

this question has been driving me crazy. would be grateful for any
help.


I am writing a version of the identity transformation to filter some
documents (they happen to be wsdl docs).
My problem is that for just about every element in the
output document all of the namespace defintions defined in my top
level
element are emitted.

This makes for a very cluttered document. I'm wondering how i can
surpress of the emission of these xmlns attributes from the output
tree.


here is a simple example:


INPUT XML DOC:

<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
xmlns:uang-bpws="http://www.siebel.com/uangrammar/2002/03/bpel4ws/"
name="tfXWidgetSrc_WSDL" targetNamespace="http://www.o.com/">

<wsdl:import pig="dog"/>
<book xmlns:blah="urn:foo"/>
</wsdl:definitions>


XSLT DOC:

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" >
<xsl:template match="node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>

<xsl:template match="@*[ not ( starts-with(name(),'xmlns:') ) ]">
<xsl:copy-of select="."/>
</xsl:template>

<xsl:template match="wsdl:definitions">
<wsdl:BLAH>
<xsl:apply-templates select="@*|node()"/>
</wsdl:BLAH>
</xsl:template>

</xsl:stylesheet


RESULT:

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:BLAH xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
name="tfXWidgetSrc_WSDL" targetNamespace="http://www.o.com/">

<wsdl:import xmlns:uang-bpws="http://www.siebel.com/uangrammar/2002/03/bpel4ws/"
pig="dog"/>
<book xmlns:uang-bpws="http://www.siebel.com/uangrammar/2002/03/bpel4ws/"
xmlns:blah="urn:foo"/>
</wsdl:BLAH>


Observations:

the output tree includes xmlns: attributes in both the wsdl:import tag
and the book tag.... even though they were not
defined in the input doc to begin with.

I tried to surpress the xmlns: attributes with
@*[ not ( starts-with(name(),'xmlns:') ) ]
but that works the same as vanilla
@*


any advice much appreciated.
-chris

 

[Ben Edgington]

I am writing a version of the identity transformation to filter some
documents (they happen to be wsdl docs).
My problem is that for just about every element in the
output document all of the namespace defintions defined in my top
level element are emitted.

This makes for a very cluttered document. I'm wondering how i can
surpress of the emission of these xmlns attributes from the output
tree.

RESULT:

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:BLAH xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
name="tfXWidgetSrc_WSDL" targetNamespace="http://www.o.com/">

<wsdl:import xmlns:uang-bpws="http://www.siebel.com/uangrammar/2002/03/bpel4ws/"
pig="dog"/>
<book xmlns:uang-bpws="http://www.siebel.com/uangrammar/2002/03/bpel4ws/"
xmlns:blah="urn:foo"/>
</wsdl:BLAH>


Observations:

the output tree includes xmlns: attributes in both the wsdl:import tag
and the book tag.... even though they were not
defined in the input doc to begin with.

This seems to be processor dependent. With Sablotron I get the same
result as you, whereas xsltproc gives the result

<wsdl:BLAH xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" name="tfXWidgetSrc_WSDL" targetNamespace="http://www.o.com/">

<wsdl:import pig="dog"/>
<book xmlns:blah="urn:foo"/>
</wsdl:BLAH>

I am no namespace expert, but the latter would seem to be more
sensible. Which is *correct* I have no idea.

If you want to copy all of the input nodes into your output namespace
then you must avoid using <xsl:copy/> and <xsl:copy-of/> and make new
versions of all elements to be copied. This pair of templates applies
the identity-without-namespaces transformation:

<xsl:template match="node()">
<xsl:element name="{name()}">
<xsl:apply-templates select="@*|node()"/>
</xsl:element>
</xsl:template>

<xsl:template match="@*|text()|comment()|processing-instruction()">
<xsl:copy/>
</xsl:template>


Ben