[Exist-open] MVC: xslt via <forward> introduces erroneous declaration for xml namespace

[ron.vandenbranden <ron...@ka...>]

Hi,

I bumped into a showstopping error with the URL rewrite servlet in 
latest trunk code (rev. 16394). When a controller file applies an XSLT 
stylesheet to some XML input via a <forward> instruction, a spurious 
redeclaration of the xml namespace is introduced. For example, if this 
input:

   <test xml:id="test"/>

... is copied identically with an XSLT stylesheet whose sole template is:

   <xsl:template match="/">
     <xsl:copy-of select="."/>
   </xsl:template>

The result is contains a spurious declaration of the xml namespace, 
bound to an 'xm' prefix:

   <test xmlns:xm="http://www.w3.org/XML/1998/namespace" xml:id="test"/>

Unfortunately, this happens to be an XML well-formedness error (see 
<http://www.w3.org/TR/xml-names/#xmlReserved>), which makes the returned 
XML unusable for further processing!

I have found this reference in the ML archive: 
<http://markmail.org/message/5gqwo6ozagxxablr>, which makes me hope that 
a quick fix can be added to the URL rewrite servlet.

I've attached a sample web application that illustrates why I believe 
the problem is situated within the URL rewrite servlet. The webapp's 
controller allows for two versions of this request:
     -application of the XSLT stylesheet via a <forward> instruction in 
the URL rewrite servlet
<http://localhost:8080/exist/xmlnstest/xmlnstest.MVC>: returns incorrect 
<test xmlns:xm="http://www.w3.org/XML/1998/namespace" xml:id="test"/>
     -application of the XSLT stylesheet via a transform:transform() in 
an XQuery script
<http://localhost:8080/exist/xmlnstest/xmlnstest.xq>: returns correct 
<test xml:id="test"/>

This is blocking my webapp development; can anyone help me out, please?

Kind regards,

Ron

-- 
Ron Van den Branden
Wetenschappelijk attaché / Senior Researcher
Reviews Editor LLC. The Journal of Digital Scholarship in the Humanities

Centrum voor Teksteditie en Bronnenstudie - CTB (KANTL)
Centre for Scholarly Editing and Document Studies
Koninklijke Academie voor Nederlandse Taal- en Letterkunde
Royal Academy of Dutch Language and Literature
Koningstraat 18 / b-9000 Gent / Belgium
tel: +32 9 265 93 51 / fax: +32 9 265 93 49
E-mail : ron...@ka...
http://www.kantl.be/ctb