Parsing attribute value using dbms_xslprocessor

Question

Hi,
We have a xmltype column which has the following structure :
<?xml version="1.0" encoding="utf-16"?>
<myFields xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xml:lang="en-us" xmlns="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-05-06T14:08:30">
<PayToTheOrderOf>TESTING</PayToTheOrderOf>
<AllocationList>
<Allocation d3p1:LineNum="0" xmlns:d3p1="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-05-06T14:08:30">
<d3p1:Name>ANNE PETER</d3p1:Name>
<d3p1:StreetAddress2>600 N WEST ST</d3p1:StreetAddress2>
<d3p1:City>BALTIMORE</d3p1:City>
<d3p1:State>MD</d3p1:State>
</Allocation>
<Allocation d3p1:LineNum="1" xmlns:d3p1="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-05-06T14:08:30">
<d3p1:Name>DAVID GREY</d3p1:Name>
<d3p1:StreetAddress2>EAST AVE</d3p1:StreetAddress2>
<d3p1:City>4</d3p1:City>
<d3p1:State>MD</d3p1:State>
</Allocation>
</myFields>"
Can anyone tell me how to parse the attribute value from the tag, "Allocation". Example: I would like to get the value from "LineNum" attribute. I would like to use dbms_xslprocessor in pl/sql.
Thanks in advance.

Answer 1

DECLARE
l_return xmltype;
l_num VARCHAR2 (10);
l_namespace1 VARCHAR2(200) := 'xmlns="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-05-06T14:08:30"';
l_namespace2 VARCHAR2(200) := 'xmlns:d3p1="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-05-06T14:08:30"';
l_parser dbms_xmlparser.parser;
l_doc dbms_xmldom.domdocument;
l_nl dbms_xmldom.domnodelist;
l_n dbms_xmldom.domnode;
BEGIN
SELECT xmltype('<?xml version="1.0" encoding="utf-16"?>
<myFields xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xml:lang="en-us" xmlns="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-05-06T14:08:30">
     <PayToTheOrderOf>TESTING</PayToTheOrderOf>
     <AllocationList>
          <Allocation d3p1:LineNum="0" xmlns:d3p1="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-05-06T14:08:30">
               <d3p1:Name>ANNE PETER</d3p1:Name>
               <d3p1:StreetAddress2>600 N WEST ST</d3p1:StreetAddress2>
               <d3p1:City>BALTIMORE</d3p1:City>
               <d3p1:State>MD</d3p1:State>
          </Allocation>
          <Allocation d3p1:LineNum="1" xmlns:d3p1="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-05-06T14:08:30">
               <d3p1:Name>DAVID GREY</d3p1:Name>
               <d3p1:StreetAddress2>EAST AVE</d3p1:StreetAddress2>
               <d3p1:City>4</d3p1:City>
               <d3p1:State>MD</d3p1:State>
          </Allocation>
     </AllocationList>
</myFields>')
INTO l_return
FROM dual;
l_parser := dbms_xmlparser.newParser;
dbms_xmlparser.parseClob(l_parser, l_return.getclobval());
l_doc := dbms_xmlparser.getDocument(l_parser);
dbms_xmlparser.freeParser(l_parser);
l_nl := dbms_xslprocessor.selectNodes(dbms_xmldom.makeNode(l_doc),'/myFields/AllocationList/Allocation', l_namespace1);
FOR i IN 1 .. dbms_xmldom.getLength(l_nl) LOOP
l_n := dbms_xmldom.item(l_nl, i-1);
dbms_xslprocessor.valueOf(l_n,'@d3p1:LineNum',l_num, l_namespace2);
dbms_output.put_line(l_num);
END LOOP;
dbms_xmldom.freeDocument(l_doc);
END;