src/com/pure/web/spring/DishToCartController.java

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package com.pure.web.spring;

import java.util.Iterator;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
import org.springframework.web.util.WebUtils;

import com.pure.domain.Cart;
import com.pure.domain.CartItem;
import com.pure.domain.Dish;
import com.pure.domain.logic.DishFacade;
import com.pure.util.ParamUtil;

public class DishToCartController implements Controller {
	private DishFacade dishFacade;

	private String successView;

	public DishFacade getDishFacade() {
		return dishFacade;
	}

	public void setDishFacade(DishFacade dishFacade) {
		this.dishFacade = dishFacade;
	}

	public ModelAndView handleRequest(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		Cart cart = (Cart) WebUtils.getOrCreateSessionAttribute(request.getSession(), "sessionCart", Cart.class);
		//HttpSession sess = request.getSession();
		//Cart cart = (Cart)sess.getAttribute("sessionCart");
		String action = ParamUtil.getString(request, "action");

		if ("add".equals(action)) {
			int dishId = ParamUtil.getInt(request, "dishId");
			Dish dish = this.getDishFacade().getDish(dishId);
			cart.addItem(dish);
			this.getDishFacade().hot(dishId);
		}

		if ("update".equals(action)) {
			Iterator cartItems = cart.getAllCartItems();
			String id = "";
			while (cartItems.hasNext()) {
				CartItem cartItem = (CartItem) cartItems.next();
				id = String.valueOf(cartItem.getDish().getId());
				try {
					int quantity = ParamUtil.getInt(request, "qty" + id);
					cart.setQuantityByItemId(id, quantity);
					if (quantity < 1) {
						cartItems.remove();
					}
				} catch (NumberFormatException e) {
				}
			}
		}