[Exist-open] searching a collection with different namespaces

[trubliphone <tru...@go...>]

Hello,

Apologies if this is a newbie question.  I am getting very confused
with namespaces and eXist / XQuery.

Suppose I have a set of documents in my exist collection that take the
following form:

one.xml:
<foo id="1">
  <one>one</one>
  <two>two</two>
</foo>

two.xml:
<foo id="2">
  <one>one</one>
  <two>two</two>
</foo>

three.xml:
<foo id="3">
  <one>one</one>
  <two>two</two>
</foo>

I have enabled searching on <foo> in my "collections.xconf" file using
the following line.  If I search for the text "one," I get the
expected results: All three documents match.

However, if I add a default namespace declaration to one of the files:

one.xml:
<foo id="1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.one.com">
  <one>one</one>
  <two>two</two>
</foo>

Then it no longer matches.  This makes sense, I guess, because the
lucene index and my search code is looking for <foo> and not the
fully-qualified element.

However, the situation is more complicated than this, because the real
documents can potentially all have different namespaces.

Is there anyway, programatically in XQuery, to handle this?

Thank you very much for your help.