/* * 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. */package cart.secure.ejb;import java.util.ArrayList;import java.util.List;import javax.ejb.Remove;import javax.ejb.Stateful;import javax.annotation.security.RolesAllowed;@Statefulpublic class CartBean implements Cart {    List<String> contents;    String customerId;    String customerName;    public void initialize(String person) throws BookException {        if (person == null) {            throw new BookException("Null person not allowed.");        } else {            customerName = person;        }        customerId = "0";        contents = new ArrayList<String>();    }    public void initialize(        String person,        String id) throws BookException {        if (person == null) {            throw new BookException("Null person not allowed.");        } else {            customerName = person;        }        IdVerifier idChecker = new IdVerifier();        if (idChecker.validate(id)) {            customerId = id;        } else {            throw new BookException("Invalid id: " + id);        }        contents = new ArrayList<String>();    }    @RolesAllowed("CartUser")    public void addBook(String title) {        contents.add(title);    }    @RolesAllowed("CartUser")    public void removeBook(String title) throws BookException {        boolean result = contents.remove(title);        if (result == false) {            throw new BookException("\"" + title + "\" not in cart.");        }    }    @RolesAllowed("CartUser")    public List<String> getContents() {        return contents;    }    @Remove()    public void remove() {        contents = null;    }}