==> DOM3 API again: validating xml file against schema

[Aimee Best]

Hello again,

I have the following code that loads an xml file. I want to validate it against a schema. But it appears setParameter("validate", ... ) etc doesn't have any effect. I tested it with an xml file with invented elements, the program loads the xml file withoutu complaint.

Any ideas?

Thanks in advance.

import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.*;
import org.w3c.dom.ls.*;
import org.w3c.dom.bootstrap.DOMImplementationRegistry;

class DOMLoadDocument {
	public static void main(String[] args) {
		String theSchema = "http://www.w3.org/2001/XMLSchema";
		String xmlFile = "book2.xml";
		String xsdFile = "books.xsd";

		try {
			// -- create parser
			DOMImplementationRegistry registry = 
				DOMImplementationRegistry.newInstance();

			DOMImplementationLS impLS = 
				(DOMImplementationLS) registry.getDOMImplementation("LS 3.0");

			LSParser parser = impLS.createLSParser(
					DOMImplementationLS.MODE_SYNCHRONOUS, theSchema);

			// -- parser configuration
			DOMConfiguration config = parser.getDomConfig();
			config.setParameter("validate", Boolean.TRUE);
			config.setParameter("validate-if-schema", Boolean.TRUE);
			config.setParameter("schema-location", xsdFile);
			config.setParameter("schema-type", theSchema);
			// add error handler
			config.setParameter("error-handler", new DOMErrorHandlerImpl());

			// -- run parser
			System.out.println("Parsing ... " + xmlFile);
			Document d = parser.parseURI( xmlFile );
			System.out.println("Done");

			// -- use a transformer for output
			TransformerFactory tFactory = TransformerFactory.newInstance();
			Transformer transformer = tFactory.newTransformer();
			DOMSource source = new DOMSource(d);
			StreamResult result = new StreamResult(System.out);
			transformer.transform(source, result); 
		}
		catch (DOMException e) {
			System.out.println( e.getMessage() );
		}
		catch (IllegalAccessException e) {
			System.out.println( e.getMessage() );
		}
		catch (InstantiationException e) {
			System.out.println( e.getMessage() );
		}
		catch (ClassNotFoundException e) {
			System.out.println( e.getMessage() );
		} 
		catch (TransformerException e) {
			e.printStackTrace();
		}
	} // end main
} // end DOMLoadDocument