XOM API for Processing XML with Java

[Jim Downing <ojd20 AT cam.ac.uk>]

Hi all,

in trying to move from the default Builder to one that uses a 
ResolvingXMLReader I've come across an error I can't figure out. I'm 
pretty sure it's not a XOM problem, but unfortunately don't understand 
what's going on well enough to figure out where the problem _is_ arising.

The application is parsing an XHTML file. This works fine when using the 
default Builder constructor, but using the ResolvingXMLReader throws the 
following exception: -

nu.xom.ParsingException: Wrong namespace URI for xml prefix:
  at nu.xom.Builder.build(Builder.java:1142)
  at nu.xom.Builder.build(Builder.java:562)
  at 
org.jimdowning.europlan.CreateTemplateSite.main(CreateTemplateSite.java:101) 

Caused by: nu.xom.NamespaceConflictException: Wrong namespace URI for 
xml prefix:
  at nu.xom.Attribute._setNamespace(Attribute.java:495)
  at nu.xom.Attribute.<init>(Attribute.java:168)
  at nu.xom.NodeFactory.makeAttribute(NodeFactory.java:253)
  at nu.xom.XOMHandler.startElement(XOMHandler.java:161)
  at 
org.xml.sax.helpers.XMLFilterImpl.startElement(XMLFilterImpl.java:527)
  at 
org.apache.xml.resolver.tools.ResolvingXMLFilter.startElement(Unknown 
Source)
  at 
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:533) 

  at 
com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(XMLDTDValidator.java:798) 

  at 
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:878) 

  at 
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1693) 

  at 
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:368) 

  at 
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:834) 

  at 
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764) 

  at 
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:148) 

  at 
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1242) 

  at org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:333)
  at org.apache.xml.resolver.tools.ResolvingXMLFilter.parse(Unknown 
Source)
  at nu.xom.Builder.build(Builder.java:1125)
  at nu.xom.Builder.build(Builder.java:562)
  at 
uk.ac.cam.ucs.template.CreateTemplateSite.main(CreateTemplateSite.java:101)

It seems that something is erroneously creating a default namespace with 
the xml prefix.

If anyone has any clues of where I should be looking, they'd be greatly 
appreciated.

Best regards,
jim