Xdksample_093001.zip - Schema Validation example

Question

I have downloaded this example and installed it as per
instructions.
when I try to run it I get the following error.
The following error has occurred:
ORA-29532: Java call terminated by uncaught Java exception:
oracle.xml.parser.schema.XSDException: Element 'schema' has
invalid namespace: 'http://www.w3.org/2001/XMLSchema'
ORA-06512: at "NM31.SCHEMAUTIL", line 0
ORA-06512: at line 15
Details:
ORA-29532: Java call terminated by uncaught Java exception:
oracle.xml.parser.schema.XSDException: Element 'schema' has
invalid namespace: 'http://www.w3.org/2001/XMLSchema'
ORA-06512: at "NM31.SCHEMAUTIL", line 0
ORA-06512: at line 15
How do I/Can I resolve this?

Answer 1

Hi Jinyu
This is the java code loaded in the database using loadjava called by a wrapper oracle stored procedure
import oracle.xml.parser.schema.*;
import oracle.xml.parser.v2.*;
import java.net.*;
import java.io.*;
import org.w3c.dom.*;
import java.util.*;
import oracle.sql.CHAR;
import java.sql.SQLException;
public class SchemaUtil
public static String validation(CHAR xml, CHAR xsd)
throws Exception
//Build Schema Object
XSDBuilder builder = new XSDBuilder();
byte [] docbytes = xsd.getBytes();
ByteArrayInputStream in = new ByteArrayInputStream(docbytes);
XMLSchema schemadoc = (XMLSchema)builder.build(in,null);
//Parse the input XML document with Schema Validation
docbytes = xml.getBytes();
in = new ByteArrayInputStream(docbytes);
DOMParser dp = new DOMParser();
// Set Schema Object for Validation
dp.setXMLSchema(schemadoc);
dp.setValidationMode(XMLParser.SCHEMA_VALIDATION);
dp.setPreserveWhitespace (true);
StringWriter sw = new StringWriter();
dp.setErrorStream (new PrintWriter(sw));
try
dp.parse (in);
sw.write("The input XML parsed without errors.\n");
catch (XMLParseException pe)
sw.write("Parser Exception: " + pe.getMessage());
catch (Exception e)
sw.write("NonParserException: " + e.getMessage());
return sw.toString();
This is the code i used initially for validating a xml file against single xml schema (.xsd) file
In the above code could u tell how to specify the second schema validation code for the incoming xml.
say i create another Schemadoc for the 2nd xml schema.
something like this with another parameter(CHAR xsd1) passing to the method
byte [] docbytes1 = xsd1.getBytes();
ByteArrayInputStream in1 = new ByteArrayInputStream(docbytes1);
XMLSchema schemadoc1 = (XMLSchema)builder.build(in1,null);
DOMParser dp = new DOMParser();
How to set for the 2nd xml schema validation in the above code or can i combine 2 xml schemas.
How to go about it
Rgrds
Sushant