/*

 *

 * Copyright 2000 Sun Microsystems, Inc. All Rights Reserved.

 * 

 * This software is the proprietary information of Sun Microsystems, Inc.  

 * Use is subject to license terms.

 * 

 */



import java.util.*;

import javax.ejb.*;



public class CartEJB implements SessionBean {



   String customerName;

   String customerId;

   Vector contents;



   public void ejbCreate(String person) throws CreateException {



      if (person == null) {

        throw new CreateException("Null person not allowed.");

      }

      else {

         customerName = person;

      }



      customerId = "0";

      contents = new Vector();

   }



   public void ejbCreate(String person, String id) throws CreateException {



      if (person == null) {

        throw new CreateException("Null person not allowed.");

      }

      else {

         customerName = person;

      }



      IdVerifier idChecker = new IdVerifier();

      if (idChecker.validate(id)) {

         customerId = id;

      }

      else {

         throw new CreateException("Invalid id: " + id);

      }



      contents = new Vector();

   }



   public void addBook(String title) {



      contents.addElement(title);

   }



   public void removeBook(String title) throws BookException {



      boolean result = contents.removeElement(title);

      if (result == false) {

         throw new BookException(title + " not in cart.");

      }

   }



   public Vector getContents() {

      return contents;

   }



   public CartEJB() {}

   public void ejbRemove() {}

   public void ejbActivate() {}

   public void ejbPassivate() {}

   public void setSessionContext(SessionContext sc) {}



}