import java.io.File;
import java.io.IOException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.w3c.dom.Document;
import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.DefaultHandler;

/*
 * Created on 15 mai 2005
 */

/**
 * Exemple rapde de validation d'un fichier XML avec DOM et SAX en utilisant un XSD
 * (XMLSchema)
 * 
 * @author NeoDante (Julien Chable)
 * @since 15/05/2005
 */
public class XSDValidator {

	static final String JAXP_SCHEMA_LANGUAGE = "http://java.sun.com/xml/jaxp/properties/schemaLanguage";

	static final String W3C_XML_SCHEMA = "http://www.w3.org/2001/XMLSchema";

	static final String JAXP_SCHEMA_SOURCE = "http://java.sun.com/xml/jaxp/properties/schemaSource";

	static boolean isValid;

	static {
		isValid = false;
	}

	public static boolean validXMLWithDOM(String xmlFile, String xsdFile) {
		isValid = true; // Valide jusqu'à ce qu'une erreur se produise !
		DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
		dbf.setIgnoringComments(true);
		dbf.setNamespaceAware(true);
		dbf.setValidating(true);
		dbf.setAttribute(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);
		dbf.setAttribute(JAXP_SCHEMA_SOURCE, new File(xsdFile));
		try {
			// Parsage du fichier XML avec DOM
			DocumentBuilder db = dbf.newDocumentBuilder();
			db.setErrorHandler(new ErrorHandler() {
				public void fatalError(SAXParseException e) {
					System.out
							.println("Erreur de validation XSD - Erreur fatal");
					isValid = false;
				}

				public void error(SAXParseException e) {
					System.out.println("Erreur de validation XSD - Erreur");
					isValid = false;
				}

				public void warning(SAXParseException e) {
					System.out.println("Erreur de validation XSD - Warning");
					isValid = false;
				}
			});
			Document doc = db.parse(xmlFile);
		} catch (ParserConfigurationException pcee) {
			System.out.println(pcee);
			return false;
		} catch (IOException ioe) {
			System.out.println(ioe);
			return false;
		} catch (SAXException saxe) {
			System.out.println(saxe);
			return false;
		}
		return isValid;
	}

	public static boolean validXMLWithSAX(String xmlFile, String xsdFile) {
		isValid = true;
		try {
			SAXParserFactory spf = SAXParserFactory.newInstance();
			spf.setNamespaceAware(true);
			spf.setValidating(true);
			SAXParser sp = spf.newSAXParser();
			sp.setProperty(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);
			sp.setProperty(JAXP_SCHEMA_SOURCE, xsdFile);
			sp.parse(xmlFile, new DefaultHandler(){
				public void fatalError(SAXParseException e) {
					System.out
							.println("Erreur de validation XSD - Erreur fatal");
					isValid = false;
				}

				public void error(SAXParseException e) {
					System.out.println("Erreur de validation XSD - Erreur");
					isValid = false;
				}

				public void warning(SAXParseException e) {
					System.out.println("Erreur de validation XSD - Warning");
					isValid = false;
				}
			});
		} catch (SAXException se) {
			System.out.println(se);
			return false;
		} catch (ParserConfigurationException pce){
			System.out.println(pce);
			return false;
		} catch (IOException ioe){
			System.out.println(ioe);
			return false;
		}
		return isValid;
	}
	
	public static void main(String[] args) {
		System.out.println(XSDValidator.validXMLWithDOM("info.xml", "info.xsd"));
		System.out.println(XSDValidator.validXMLWithSAX("info.xml", "info.xsd"));
	}
}