SAXParser for XSD 1.1 Validation

This section describes a tutorial example trying to use the Xerces2 SAXParser class included in JDK to perform XSD 1.1 validation on an XML document. The program fails.

Now let's try to see if we can make SAXValidatorXsd.java program to support XSD 1.1 by setting "http://www.w3.org/XML/XMLSchema/v1.1" as the schema language property. Here is the updated program, SAXValidatorXsd11.java:

/* SAXValidatorXsd11.java
 - Copyright (c) 2013 HerongYang.com. All Rights Reserved.
 */
import java.io.File;
import java.io.IOException;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.ParserConfigurationException;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.DefaultHandler;
class SAXValidatorXsd11 {
   public static void main(String[] args) {
      String schemaFeature
         = "http://apache.org/xml/features/validation/schema";
      try {
         File x = new File(args[0]);
         String schemaLocation = args[1];

         SAXParserFactory f = SAXParserFactory.newInstance();
         System.out.println(f.toString());
         f.setValidating(true);
         f.setFeature(schemaFeature,true);

         SAXParser p = f.newSAXParser();
         System.out.println(p.toString());

         p.setProperty(
            "http://apache.org/xml/properties/schema"
            +"/external-noNamespaceSchemaLocation",schemaLocation);

         p.setProperty(
            "http://java.sun.com/xml/jaxp/properties/schemaLanguage",
            "http://www.w3.org/XML/XMLSchema/v1.1");

         DefaultHandler h = new MyErrorHandler();
         p.parse(x,h);
      } catch (ParserConfigurationException e) {
         System.out.println(e.toString());
      } catch (SAXException e) {
         System.out.println(e.toString());
      } catch (IOException e) {
         System.out.println(e.toString());
      }
   }
   private static class MyErrorHandler extends DefaultHandler {
      public void warning(SAXParseException e) throws SAXException {
         System.out.println("Warning: ");
         printInfo(e);
      }
      public void error(SAXParseException e) throws SAXException {
         System.out.println("Error: ");
         printInfo(e);
      }
      public void fatalError(SAXParseException e) throws SAXException {
         System.out.println("Fattal error: ");
         printInfo(e);
      }
      private void printInfo(SAXParseException e) {
         System.out.println("   Public ID: "+e.getPublicId());
         System.out.println("   System ID: "+e.getSystemId());
         System.out.println("   Line number: "+e.getLineNumber());
         System.out.println("   Column number: "+e.getColumnNumber());
         System.out.println("   Message: "+e.getMessage());
      }
   }
}

Running it with JDK 13 and without Xerces2. I get an exception: XSD 11 schema language is not supported.

herong> java SAXValidatorXsd11.java dictionary_invalid_xsd.xml dictionary.xsd
com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl@1198b989
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl@1677d1

org.xml.sax.SAXNotSupportedException:
   The specified schema language is not supported.

Running it with JDK 13 and with Xerces2 JAR files. I get the same exception: XSD 11 schema language is not supported.

herong> java_xerces SAXValidatorXsd11.java dictionary_invalid_xsd.xml dictionary.xsd
org.apache.xerces.jaxp.SAXParserFactoryImpl@12b0404f
org.apache.xerces.jaxp.SAXParserImpl@76505305

org.xml.sax.SAXNotSupportedException:
   The specified schema language is not supported.

Too bad, the SAXParse object created with the default configuration does not recognize the XSD 1.1 URI: http://www.w3.org/XML/XMLSchema/v1.1.

Table of Contents

 About This Book

 Introduction to XML Schema

 XML Editor and Schema Processor - XMLPad

 Java API for XML Processing - JAXP

 JAXP - XML Schema (XSD) Validation

 Xerces2 Java Parser - Java API of XML Parsers

Using Xerces2 Java APIs

 JAXP, DOM and SAX APIs in Xerces2 JARs

 XML Schema (XSD) Validation using XMLReader

 Running XMLReaderValidator on XSD 1.1 Schema

 XML Schema (XSD) Validation using SAXParser

 SAXParser for XSD Validation Fixed

SAXParser for XSD 1.1 Validation

 Xsd11SchemaValidator.java for XSD 1.1 Validation

 Xsd11SchemaValidator.java XSD 1.1 Test Result

 XML Schema Language - Basics

 Introduction of XSD Built-in Datatypes

 "string" and Its Derived Datatypes

 "decimal" and Its Derived Datatypes

 "dateTime" and Its Related Datatypes

 Miscellaneous Built-in Datatypes

 Facets, Constraining Facets and Restriction Datatypes

 "simpleType" - Defining Your Own Simple Datatypes

 Complex Element Declaration

 Identity-Constraints: unique, key and keyref

 Assertion as Custom Validation Rules

 XML Schema Location and Namespace in XML Documents

 Overriding Element Types in XML Documents

 Linking Multiple Schema Documents Together

 Glossary

 Archived Tutorials

 References

 Full Version in PDF/EPUB