Adding namespace to XML output

Question

Hi,
I have a requirement to generate a XML document for columns in the table. I am using DBMS_XMLgen.getXML inside my procedure to get the XML document.
The output which i get after executing my procedure is:
<?xml version="1.0"?>
<EMP>
<EMPLOYEE_NO>000017</EMPLOYEE_NO>
<EMPLOYEE_STATUS>ACTIVE</EMPLOYEE_STATUS>
<NAME_LAST>Mini</NAME_LAST>
<NAME_FIRST/>
</EMP>
But I also need namespace prefix and namespace uri in this xml output. Is there a way to add namespace prefix and namespace uri to this xml output.
So what i need is something like below one:
<?xml version="1.0"?>
<xs:EMP>xmlns:out="http://xmlns:out="http:/example.org/ver1.0/ThisISTest#">
<xs:EMPLOYEE_NO>000017</xs:EMPLOYEE_NO>
<xs:EMPLOYEE_STATUS>ACTIVE</xs:EMPLOYEE_STATUS>
<xs:NAME_LAST>Mini</xs:NAME_LAST>
<xs:NAME_FIRST/>
</xs:EMP>
Any solutions or sample code on this would be of great help.
Thanks in Advance.

Answer 1

Hi,
IMO, the best option is to use an XSL transformation "on the fly" with DBMS_XMLGEN.
Here's a stylesheet that should work (change namespace and prefix to yours) :
<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:ns0="http://test">
<xsl:template match="*">
<xsl:element name="ns0:{local-name()}">
  <xsl:apply-templates/>
</xsl:element>
</xsl:template>
</xsl:stylesheet>Right now, I only have a 10gR1 at my disposal and the transformation doesn't give expected results (there are a few known issues with XSLT on 10g).
However, I could test it with an external processor (saxon9he) and it should work OK in 11g too.
So, in your procedure, all you have to do is declare the XSLT document :
xsldoc    xmltype := xmltype(
'<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:ns0="http://test">
<xsl:template match="*">
<xsl:element name="ns0:{local-name()}">
  <xsl:apply-templates/>
</xsl:element>
</xsl:template>
</xsl:stylesheet>'
);and bind the stylesheet to the context :
DBMS_XMLGEN.setrowsettag (messagehandle_xml, 'EMP');
DBMS_XMLGEN.setrowtag (messagehandle_xml, NULL);
DBMS_XMLGEN.setmaxrows (messagehandle_xml, 2);
DBMS_XMLGEN.setNullHandling(messagehandle_xml, DBMS_XMLGEN.EMPTY_TAG);
DBMS_XMLGEN.setXSLT(messagehandle_xml, xsldoc); -- < here
...Let me know if it works :)