/*
* 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 servlets;
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import database.*;
import cart.*;
import util.Currency;
import exception.*;
/**
* This is a simple example of an HTTP Servlet. It responds to the GET
* method of the HTTP protocol.
*/
public class CatalogServlet extends HttpServlet {
private BookDBAO bookDB;
public void init() throws ServletException {
bookDB = (BookDBAO) getServletContext()
.getAttribute("bookDB");
if (bookDB == null) {
throw new UnavailableException("Couldn't get database.");
}
}
public void destroy() {
bookDB = null;
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// Get the user's session and shopping cart
HttpSession session = request.getSession(true);
ResourceBundle messages =
(ResourceBundle) session.getAttribute("messages");
ShoppingCart cart = (ShoppingCart) session.getAttribute("cart");
// If the user has no cart, create a new one
if (cart == null) {
cart = new ShoppingCart();
session.setAttribute("cart", cart);
}
// set content-type header before accessing the Writer
response.setContentType("text/html");
response.setBufferSize(8192);
PrintWriter out = response.getWriter();
// then write the data of the response
out.println("" + "" +
messages.getString("TitleBookCatalog") + "");
// Get the dispatcher; it gets the banner to the user
RequestDispatcher dispatcher =
getServletContext()
.getRequestDispatcher("/banner");
if (dispatcher != null) {
dispatcher.include(request, response);
}
//Information on the books is from the database through its front end
// Additions to the shopping cart
String bookId = request.getParameter("bookId");
if (bookId != null) {
try {
BookDetails book = bookDB.getBookDetails(bookId);
cart.add(bookId, book);
out.println("" + "" +
messages.getString("CartAdded1") + "" + book.getTitle() +
" " + messages.getString("CartAdded2") +
"
");
} catch (BookNotFoundException ex) {
response.reset();
throw new ServletException(ex);
}
}
//Give the option of checking cart or checking out if cart not empty
if (cart.getNumberOfItems() > 0) {
out.println("" + messages.getString("CartCheck") +
" " + "" + messages.getString("Buy") + "" + "
");
}
// Always prompt the user to buy more -- get and show the catalog
out.println("
" + "" + messages.getString("Choose") +
"
" + " ");
try {
Collection coll = bookDB.getBooks();
Iterator i = coll.iterator();
Currency c = (Currency) session.getAttribute("currency");
if (c == null) {
c = new Currency();
c.setLocale(request.getLocale());
session.setAttribute("currency", c);
}
while (i.hasNext()) {
BookDetails book = (BookDetails) i.next();
bookId = book.getBookId();
c.setAmount(book.getPrice());
//Print out info on each book in its own two rows
out.println("" + "| " + " " +
book.getTitle() + " | " +
"" + c.getFormat() +
" | " + "" +
" " +
messages.getString("CartAdd") + " |
" +
"" + "| " + " " +
messages.getString("By") + " " + book.getFirstName() +
" " + book.getSurname() + " |
");
}
} catch (BooksNotFoundException ex) {
response.reset();
throw new ServletException(ex);
}
out.println("