main.java

java书 java书 java书 java书 java书 java书

/*
 * 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.FileInputStream;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.*;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;

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


/*
 * $Id: Main.java,v 1.1 2006/05/08 22:24:21 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 modify a java content
    // tree and marshal it back to a xml data. This example demonstrates
    // customiation within the schema file, po.xsd, and the impact that these 
    // customizations have on the schema derived Java representation.
    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.myPo");

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

            // unmarshal a po instance document into a tree of Java content
            // objects composed of classes from the primer.myPo package.
            JAXBElement poe = (JAXBElement) u.unmarshal(
                        new FileInputStream("po.xml"));
            POType po = (POType) poe.getValue();

            // change the billto address
            USAddress address = po.getBillTo();
            address.setToName("John Bob");
            address.setStreet("242 Main Street");
            address.setCity("Beverly Hills");
            address.setState(USState.CA);
            address.setZipCode(90210);

            USState purchaseState = address.getState();
            ListIterator iter = po.getItems()
                                  .getItem()
                                  .listIterator();

            while (iter.hasNext()) {
                // update to 20% off sale price	
                Items.Item item = (Items.Item) iter.next();
                item.setPrice(item.getPrice().multiply(new BigDecimal("0.80")));

                //Calculate sales tax for specific states
                if (purchaseState == USState.MA) {
                    item.setPrice(
                            item.getPrice().multiply(new BigDecimal("1.05")));
                } else if (purchaseState == USState.CA) {
                    item.setPrice(
                            item.getPrice().multiply(new BigDecimal("1.06")));
                }

                item.setPrice(
                        item.getPrice().setScale(2, BigDecimal.ROUND_DOWN));
            }

            // create a Marshaller and marshal to a file
            Marshaller m = jc.createMarshaller();
            m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
            m.marshal(poe, System.out);
        } catch (JAXBException je) {
            je.printStackTrace();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
    }
}