XMLQuery (XQuery) with namespace

Question

I'm pretty new to XML/XQuery and have the following problem.
I've got a DB outside oracle which is the same as I got in Oracle (10.2.0.1.0). Using XMLSpy I can make a simple query with a default namespace that gives me an XML document.
xquery version "1.0";
declare default element namespace "POI";
for $x in fn:doc("H:\urs\025_XPOI\XDB\xdb\Simple\xml\001_03082006\xpoi\simple.xml")/Simple_XPOIS/Simple
where $x/ID = 1
return $x
When I try the same in Oracle, it fails. I have no idea how to use the XMLNamespaces......
SQL>
SQL> WITH XMLNamespaces (DEFAULT 'POI')
2 SELECT XMLQuery('
3 for $x in fn:doc("/home/Simple/xml/001_03082006/xpoi/simple.xml")/Simple_XPOIS/Simple
4 where $x/ID = 1
5 return $x
6 '
7 RETURNING CONTENT) AS RESULT FROM DUAL;
WITH XMLNamespaces (DEFAULT 'POI')
ERROR at line 1:
ORA-32033: unsupported column aliasing
####################

Answer 1

Does this help
SQL> var docPath varchar2(128)
SQL> var xmltext varchar2(4000)
SQL> --
SQL> begin
  2    :docPath := '/public/rdfSample.xml';
  3    :xmltext :=
  4  '<?xml version="1.0"?>
  5  <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://mets.d2lab.net/onts/core.owl#" xmlns:core="http://mets.d
2lab.net/onts/core.owl#" xmlns:ct="http://mets.d2lab.net/onts/ct.owl#" xmlns:dc="http://protege.stanford.edu/plugins/owl/dc/dublincore.owl#"
xmlns:geo="http://reliant.teknowledge.com/DAML/Geography.owl#" xmlns:icmsp="http://mets.d2lab.net/onts/icmsp.owl#" xmlns:isocc="http://www.
daml.org/2001/09/countries/iso-3166-ont#" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmln
s:xsd="http://www.w3.org/2001/XMLSchema#">
  6     <rdf:Description rdf:ID="AERO000001">
  7             <rdf:type rdf:resource="http://mets.d2lab.net/onts/core.owl#Municipality"/>
  8             <core:hasName>ST PETERSBURG</core:hasName>
  9             <core:hasRefs rdf:resource="#AERO000002"/>
10             <core:fromDocument rdf:resource="#id00001"/>
11             <core:hasName>SAINT  PETERSBURG</core:hasName>
12             <core:hasName>PETERSBURG</core:hasName>
13     </rdf:Description>
14  </rdf:RDF>';
15  end;
16  /
PL/SQL procedure successfully completed.
SQL> declare
  2    res boolean;
  3  begin
  4    if (dbms_xdb.existsResource(:docPath)) then
  5      dbms_xdb.deleteResource(:docPath);
  6    end if;
  7    res := dbms_xdb.createResource(:docPath,:xmltext);
  8    commit;
  9  end;
10  /
PL/SQL procedure successfully completed.
SQL> set long 10000 lines 1000 pages 0
SQL> --
SQL> select xdburitype(:docPath).getXML()
  2    from dual
  3  /
<?xml version="1.0"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://mets.d2lab.net/onts/core.owl#" xmlns:core="http://mets.d2lab.
net/onts/core.owl#" xmlns:ct="http://mets.d2lab.net/onts/ct.owl#" xmlns:dc="http://protege.stanford.edu/plugins/owl/dc/dublincore.owl#" xmln
s:geo="http://reliant.teknowledge.com/DAML/Geography.owl#" xmlns:icmsp="http://mets.d2lab.net/onts/icmsp.owl#" xmlns:isocc="http://www.daml.
org/2001/09/countries/iso-3166-ont#" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:xsd
="http://www.w3.org/2001/XMLSchema#">
  <rdf:Description rdf:ID="AERO000001">
    <rdf:type rdf:resource="http://mets.d2lab.net/onts/core.owl#Municipality"/>
    <core:hasName>ST PETERSBURG</core:hasName>
    <core:hasRefs rdf:resource="#AERO000002"/>
    <core:fromDocument rdf:resource="#id00001"/>
    <core:hasName>SAINT  PETERSBURG</core:hasName>
    <core:hasName>PETERSBURG</core:hasName>
  </rdf:Description>
</rdf:RDF>
SQL> select xmlquery( 'for $doc in doc($DOCPATH) return $doc' passing :DOCPATH as DOCPATH returning content)
  2    from dual
  3  /
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://mets.d2lab.net/onts/core.owl#" xmlns:core="http://mets.d2lab.
net/onts/core.owl#" xmlns:ct="http://mets.d2lab.net/onts/ct.owl#" xmlns:dc="http://protege.stanford.edu/plugins/owl/dc/dublincore.owl#" xmln
s:geo="http://reliant.teknowledge.com/DAML/Geography.owl#" xmlns:icmsp="http://mets.d2lab.net/onts/icmsp.owl#" xmlns:isocc="http://www.daml.
org/2001/09/countries/iso-3166-ont#" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:xsd
="http://www.w3.org/2001/XMLSchema#"><rdf:Description rdf:ID="AERO000001"><rdf:type rdf:resource="http://mets.d2lab.net/onts/core.owl#Munici
pality"/><core:hasName>ST PETERSBURG</core:hasName><core:hasRefs rdf:resource="#AERO000002"/><core:fromDocument rdf:resource="#id00001"/><co
re:hasName>SAINT  PETERSBURG</core:hasName><core:hasName>PETERSBURG</core:hasName></rdf:Description></rdf:RDF>
SQL> select xmlquery
  2         (
  3           'declare namespace rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"; (: :)
  4            declare namespace core="http://mets.d2lab.net/onts/core.owl#"; (: :)
  5            for $doc in doc($DOCPATH)/rdf:RDF/rdf:Description/core:fromDocument/@rdf:resource return $doc'
  6            passing :DOCPATH as "DOCPATH" returning content
  7         )
  8    from dual
  9  /
#id00001
SQL> --You should be able to use collection to refer to all the documents if a folder...
Eg
select xmlquery( 'for $doc in collection($DOCPATH) return $doc' passing :DOCPATH as DOCPATH returning content)
from dual