Examples of com.sun.bookstore2.listeners.ContextListener


    public void contextInitialized(ServletContextEvent event) {
        context = event.getServletContext();


        try {
            BookDBAO bookDBAO = new BookDBAO(emf);
            context.setAttribute("bookDBAO", bookDBAO);
        } catch (Exception ex) {
            System.out.println(
                    "Couldn't create bookstore database bean: "
                    + ex.getMessage());

    }


    public void contextDestroyed(ServletContextEvent event) {
        context = event.getServletContext();


        BookDBAO bookDBAO = (BookDBAO) context.getAttribute("bookDBAO");


        if (bookDBAO != null) {
            bookDBAO.remove();
        }


        context.removeAttribute("bookDBAO");
    }

        HttpServletRequest request,
        HttpServletResponse response) {
        String bookId = null;
        String clear = null;
        Book book = null;
        BookDBAO bookDBAO = (BookDBAO) getServletContext()
                                           .getAttribute("bookDBAO");
        HttpSession session = request.getSession();
        String selectedScreen = request.getServletPath();


        ShoppingCart cart = (ShoppingCart) session.getAttribute("cart");


        if (cart == null) {
            cart = new ShoppingCart();
            session.setAttribute("cart", cart);
        }


        if (selectedScreen.equals("/books/bookcatalog")) {
            bookId = request.getParameter("Add");


            if (!bookId.equals("")) {
                try {
                    book = bookDBAO.getBook(bookId);
                    cart.add(bookId, book);
                } catch (BookNotFoundException ex) {
                    // not possible
                }
            }
        } else if (selectedScreen.equals("/books/bookshowcart")) {
            bookId = request.getParameter("Remove");


            if (bookId != null) {
                cart.remove(bookId);
            }


            clear = request.getParameter("Clear");


            if ((clear != null) && clear.equals("clear")) {
                cart.clear();
            }
        } else if (selectedScreen.equals("/books/bookreceipt")) {
            // Update the inventory
            try {
                utx.begin();
                bookDBAO.buyBooks(cart);
                utx.commit();
            } catch (Exception ex) {
                try {
                    utx.rollback();
                } catch (Exception exe) {

Examples of com.sun.bookstore2.listeners.ContextListener

Related Classes of com.sun.bookstore2.listeners.ContextListener