main.java

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/*
 * Copyright (c) 2006 Sun Microsystems, Inc.  All rights reserved.  U.S.
 * Government Rights - Commercial software.  Government users are subject
 * to the Sun Microsystems, Inc. standard license agreement and
 * applicable provisions of the FAR and its supplements.  Use is subject
 * to license terms.
 *
 * This distribution may include materials developed by third parties.
 * Sun, Sun Microsystems, the Sun logo, Java and J2EE are trademarks
 * or registered trademarks of Sun Microsystems, Inc. in the U.S. and
 * other countries.
 *
 * Copyright (c) 2006 Sun Microsystems, Inc. Tous droits reserves.
 *
 * Droits du gouvernement americain, utilisateurs gouvernementaux - logiciel
 * commercial. Les utilisateurs gouvernementaux sont soumis au contrat de
 * licence standard de Sun Microsystems, Inc., ainsi qu'aux dispositions
 * en vigueur de la FAR (Federal Acquisition Regulations) et des
 * supplements a celles-ci.  Distribue par des licences qui en
 * restreignent l'utilisation.
 *
 * Cette distribution peut comprendre des composants developpes par des
 * tierces parties. Sun, Sun Microsystems, le logo Sun, Java et J2EE
 * sont des marques de fabrique ou des marques deposees de Sun
 * Microsystems, Inc. aux Etats-Unis et dans d'autres pays.
 */


import java.io.File;
import java.io.IOException;
import java.math.BigDecimal;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.UnmarshalException;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.ValidationEvent;
import javax.xml.bind.ValidationEventHandler;
import javax.xml.bind.ValidationEventLocator;
import org.w3c.dom.Node;
import static javax.xml.XMLConstants.W3C_XML_SCHEMA_NS_URI;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Schema;

// import java content classes generated by binding compiler
import primer.po.*;


/*
 * $Id: Main.java,v 1.1 2006/05/08 23:02:00 jendrock Exp $
 *
 * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved.
 *
 * This software is the proprietary information of Sun Microsystems, Inc.
 * Use is subject to license terms.
 *
 */
public class Main {
    // This sample application demonstrates how to enable validation during
    // the unmarshal operations. 
    public static void main(String[] args) {
        try {
            // create a JAXBContext capable of handling classes generated into
            // the primer.po package
            JAXBContext jc = JAXBContext.newInstance("primer.po");

            // create an Unmarshaller
            Unmarshaller u = jc.createUnmarshaller();

            SchemaFactory sf = SchemaFactory.newInstance(W3C_XML_SCHEMA_NS_URI);

            try {
                Schema schema = sf.newSchema(new File("po.xsd"));
                u.setSchema(schema);
                u.setEventHandler(
                        new ValidationEventHandler() {
                            // allow unmarshalling to continue even if there are errors
                            public boolean handleEvent(ValidationEvent ve) {
                                // ignore warnings
                                if (ve.getSeverity() != ValidationEvent.WARNING) {
                                    ValidationEventLocator vel = ve.getLocator();
                                    System.out.println(
                                            "Line:Col[" + vel.getLineNumber()
                                            + ":" + vel.getColumnNumber()
                                            + "]:" + ve.getMessage());
                                }

                                return true;
                            }
                        });
            } catch (org.xml.sax.SAXException se) {
                System.out.println(
                        "Unable to validate due to following error.");
                se.printStackTrace();
            }

            // unmarshal an invalid po instance document into a tree of Java
            // content objects composed of classes from the primer.po package.
            System.out.println(
                    "NOTE: This sample is working correctly if you see validation errors!!");

            Object poe = u.unmarshal(new File("po.xml"));

            // even though document was determined to be invalid unmarshalling,
            // marshal out result.
            System.out.println("");
            System.out.println("Still able to marshal invalid document");

            Marshaller m = jc.createMarshaller();
            m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
            m.marshal(poe, System.out);
        } catch (UnmarshalException ue) {
            // The JAXB specification does not mandate how the JAXB provider
            // must behave when attempting to unmarshal invalid XML data.  In
            // those cases, the JAXB provider is allowed to terminate the 
            // call to unmarshal with an UnmarshalException.
            System.out.println("Caught UnmarshalException");
        } catch (JAXBException je) {
            je.printStackTrace();
        }
    }
}