Validate xml againt registerd schema, ignoring xsi:noNamespaceSchemaLocatio

Question

hi,
i would like to validate received xml against registered schema, ignoring the one defined in xml. I use XMLisValid(xml_data ,schema_url) but it works only if there is no xsi:noNamespaceSchemaLocation attrubute.
This is sample xml.
<?xml version="1.0" encoding="UTF-8"?>
<!--Sample XML file generated by XMLSPY v2004 rel. 3 U (http://www.xmlspy.com)-->
<ROOT xmlns:xdb="http://xmlns.oracle.com/xdb" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://localhost/public/xsd/myapp.xsd">
     <ID>0</ID>
     <INFO>
          <INFO_ID>0</INFO_ID>
          <INFO_CONTENT>Text</INFO_CONTENT>
     </INFO>
</ROOT>
Anybody knows if it is possible?
Thanks in advance..

Answer 1

Hi,
It should work according to the documentation, but obviously it doesn't.
So I guess you'll have to consider one of these options :
- Changing the xsi:noNamespaceSchemaLocation at the source to use the URL of your registered schema instead
- The other way around : register your schema at the URL defined in the document
- Removing the xsi:noNamespaceSchemaLocation attribute prior to validation
Here's an example for the third option :
BEGIN
  dbms_xmlschema.registerSchema(
    schemaURL => 'myapp2.xsd'
  , schemaDoc =>
'<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="ROOT">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="ID" type="xs:integer"/>
        <xs:element name="INFO">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="INFO_ID" type="xs:integer"/>
              <xs:element name="INFO_CONTENT" type="xs:string"/>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>'
  , local => true
  , genTypes => false
  , genTables => false
END;
SQL> declare
  2 
  3    doc xmltype := xmltype('<?xml version="1.0" encoding="UTF-8"?>
  4  <ROOT xmlns:xdb="http://xmlns.oracle.com/xdb"
  5        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  6        xsi:noNamespaceSchemaLocation="http://localhost/public/xsd/myapp.xsd">
  7  <ID>0</ID>
  8  <INFO>
  9  <INFO_ID>0</INFO_ID>
10  <INFO_CONTENT>Text</INFO_CONTENT>
11  </INFO>
12  </ROOT>');
13 
14    isValid integer;
15 
16  begin
17 
18    doc := doc.deleteXML('/ROOT/@xsi:noNamespaceSchemaLocation','xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"');
19 
20    select xmlisvalid(doc, 'myapp2.xsd') into isValid from dual;
21 
22    dbms_output.put_line('isValid = '||to_char(isValid));
23 
24  end;
25  /
isValid = 1
PL/SQL procedure successfully completed