XSD Tutorials - Herong's Tutorial Examples - v5.23, by Herong Yang
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
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
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
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
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