コード例 #1
0
  public static void calculateTotal(ShoppingCartStructure shoppingCartStructure) {
    Double total = 0.0;

    for (Product product : shoppingCartStructure.getProducts()) {
      Integer count = product.getCount();
      Double price = product.getPrice();
      total = total + count * price;
    }
    shoppingCartStructure.setTotal(total);

    calculateOffers(shoppingCartStructure);

    shoppingCartStructure.setGrandTotal(
        shoppingCartStructure.getTotal() + shoppingCartStructure.getOffer());
  }
コード例 #2
0
  public static void calculateOffers(ShoppingCartStructure shoppingCartStructure) {
    Map<String, ArrayList<Product>> sameTypeProductsMap = new HashMap<String, ArrayList<Product>>();
    for (Product product : shoppingCartStructure.getProducts()) {
      String productId = product.getProductId();
      ArrayList<Product> sameTypeProducts = new ArrayList<Product>();
      if (sameTypeProductsMap.containsKey(productId)) {
        sameTypeProducts = sameTypeProductsMap.get(productId);
      }
      sameTypeProducts.add(product);
      sameTypeProductsMap.put(productId, sameTypeProducts);
    }

    Map<String, ProductOffer> possibleOffersMap = shoppingCartStructure.getPossibleOffersMap();
    if (!possibleOffersMap.isEmpty()) {
      Double offer = 0.0;
      for (String productId : sameTypeProductsMap.keySet()) {
        if (possibleOffersMap.containsKey(productId)
            && sameTypeProductsMap.containsKey(productId)) {
          Integer sameProductCount = 0;
          ArrayList<Product> sameProducts = sameTypeProductsMap.get(productId);
          if (!sameProducts.isEmpty()) {
            for (Product sameProduct : sameProducts) {
              sameProductCount = sameProductCount + sameProduct.getCount();
            }
            ProductOffer productOffer = possibleOffersMap.get(productId);
            Double offerCondition = productOffer.getOfferCondition();
            int offerApplyTimes = (int) (sameProductCount / offerCondition);
            if (offerApplyTimes > 0) {
              Double price = sameProducts.get(0).getPrice();
              Double offerFormula = productOffer.getOfferFormula();
              offer = offer + offerApplyTimes * price * offerFormula;
              shoppingCartStructure.getAppliedOffers().add(productOffer);
            }
          }
        }
      }
      shoppingCartStructure.setOffer(offer);
    }
  }