Store XML-fragment without Namespace Information

Question

Hello,
I register a schema, create a table with a XMLTYPE column, insert a row and create a view to query the data.
ALTER SESSION SET nls_numeric_characters = '.,';
BEGIN
    dbms_xmlschema.registerSchema(
         'http://test_datetime.xsd'
        ,q'[<?xml version="1.0" encoding="WE8ISO8859P1" standalone="no"?>
<xs:schema xmlns="urn:iso:std:iso:20022:tech:xsd:pain.001.002.99" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xdb="http://xmlns.oracle.com/xdb" targetNamespace="urn:iso:std:iso:20022:tech:xsd:pain.001.002.99" elementFormDefault="qualified">
  <xs:element name="Document" type="Document"/>
    <xs:complexType name="Document">
        <xs:sequence>
            <xs:element name="CreDtTm" type="ISODateTime"/>
        </xs:sequence>
    </xs:complexType>
    <xs:simpleType name="ISODateTime" xdb:SQLType="TIMESTAMP WITH TIME ZONE">
        <xs:restriction base="xs:dateTime"/>
    </xs:simpleType>
</xs:schema>]'
        ,TRUE
        ,FALSE
        ,FALSE
END;
CREATE TABLE test_datetime (
     id             NUMBER
    ,xml_document   XMLTYPE
    XMLTYPE COLUMN xml_document
    ELEMENT "pain.001.002.99.xsd#Document";
INSERT INTO test_datetime (id,xml_document)
    VALUES (
         1
        ,XMLTYPE(
q'[<?xml version="1.0" encoding="UTF-8"?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:pain.001.002.99"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:iso:std:iso:20022:tech:xsd:pain.001.002.99
pain.001.002.99.xsd">
<CreDtTm>2012-06-02T09:30:47.000Z</CreDtTm>
</Document>]')
COMMIT;
CREATE OR REPLACE VIEW v_dateTime_xml AS
SELECT  created.CreationDateTime
       ,created.CreDtTm
FROM    test_datetime,
        XMLTABLE(XMLNAMESPACES(DEFAULT 'urn:iso:std:iso:20022:tech:xsd:pain.001.002.99'),
            '/Document'
            PASSING test_datetime.xml_document
            COLUMNS
             CreationDateTime TIMESTAMP WITH TIME ZONE  PATH 'CreDtTm'
            ,CreDtTm          XMLTYPE                   PATH 'CreDtTm'
            ) created;I want to store the element CreDtTm in another table to use it later without recreating it (in my real code it is not a simple element, but a fragment with many elements).
Yet the selected element contains the schema information
<CreDtTm xmlns="urn:iso:std:iso:20022:tech:xsd:pain.001.002.99">2012-06-02T09:30:47.000000+00:00</CreDtTm>Therefore, when I later use it in another XML document it is includes together with the xmlns attribute.
SELECT  XMLELEMENT(
             "Document"
            ,XMLAttributes(
                 'urn:iso:std:iso:20022:tech:xsd:pain.001.002.99' AS "xmlns"
                ,'http://www.w3.org/2001/XMLSchema-instance' AS "xmlns:xsi"
                ,'urn:iso:std:iso:20022:tech:xsd:pain.001.002.99 pain.001.002.99.xsd' AS "xsi:schemaLocation"
            ,(  SELECT  XMLAGG(CreDtTm)
                FROM    v_dateTime_xml
FROM    dual;
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:pain.001.002.99"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="urn:iso:std:iso:20022:tech:xsd:pain.001.002.99 pain.001.002.99.xsd">
<CreDtTm xmlns="urn:iso:std:iso:20022:tech:xsd:pain.001.002.99">2012-06-02T09:30:47.000000+00:00</CreDtTm>
</Document>How can I store or retrieve it without the schema information?
Regards
Marcus
Edited by: Marwim on 08.08.2012 14:06
Corrected schema

Answer 1

P.S.: Perhaps something dirty likeSure, you can always do that :)
Here are two examples with XQuery or XSLT :
SQL> var xsldoc varchar2(4000)
SQL>
SQL> begin
  2 
  3   :xsldoc := '<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  4    <xsl:output method="xml" omit-xml-declaration="yes"/>
  5    <xsl:template match="*">
  6      <xsl:element name="{local-name()}">
  7        <xsl:apply-templates select="@*|*|text()"/>
  8      </xsl:element>
  9    </xsl:template>
10    <xsl:template match="@*|text()">
11      <xsl:copy/>
12    </xsl:template>
13  </xsl:stylesheet>';
14 
15  end;
16  /
PL/SQL procedure successfully completed
SQL>
SQL> SELECT XMLQuery(
  2         'declare function local:strip-ns($e as element()) as element()
  3          {
  4            element {local-name($e)}
  5            {
  6              for $i in $e/(@*|node())
  7              return typeswitch ($i)
  8                       case element() return local:strip-ns($i)
  9                       default return $i
10            }
11          }; local:strip-ns(*)'
12          passing x.CreDtTm
13          returning content
14         ) as "XQuery method"
15       , XMLTransform(x.CreDtTm, :xsldoc) as "XSLT method"
16  FROM test_datetime
17     , XMLTable(
18         XMLNamespaces(default 'urn:iso:std:iso:20022:tech:xsd:pain.001.002.99')
19       , '/Document'
20         PASSING test_datetime.xml_document
21         COLUMNS CreDtTm   XMLTYPE PATH 'CreDtTm'
22       ) x
23  ;
XQuery method                                                                    XSLT method
<CreDtTm> 2012-06-02T09:30:47,000000+00:00</CreDtTm>                             <CreDtTm> 2012-06-02T09:30:47,000000+00:00</CreDtTm>