public void addOneToBasket(int productId) {
		boolean isAdded;
		if (basket.containsKey(productId)) {
			isAdded = basket.get(productId).addOneProduct();
		} else {
			ProductInBasket prod = new ProductInBasket();
			ProductDAO dao = DAOFactory.getInstance().getProductDAO();
			isAdded = prod.setProduct(dao.findProduct(productId));
			if (isAdded) basket.put(productId, prod);
		}
		if (isAdded) {
			numProductsInBasket++;
		}
	}