Java tutorial
/* * Licensed to csti consulting * You may obtain a copy of the License at * * http://www.csticonsulting.com * Copyright (c) 2006-Aug 25, 2010 Consultation CS-TI inc. * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package com.salesmanager.checkout.cart; /** * Main Shopping Cart */ import java.math.BigDecimal; import java.util.ArrayList; import java.util.Collection; import java.util.HashMap; import java.util.Iterator; import java.util.List; import java.util.Locale; import java.util.Map; import javax.servlet.http.Cookie; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.apache.commons.lang.StringUtils; import org.apache.log4j.Logger; import uk.ltd.getahead.dwr.WebContextFactory; import com.salesmanager.checkout.util.MiniShoppingCartUtil; import com.salesmanager.core.constants.CatalogConstants; import com.salesmanager.core.entity.customer.Customer; import com.salesmanager.core.entity.merchant.MerchantStore; import com.salesmanager.core.entity.orders.Order; import com.salesmanager.core.entity.orders.OrderProduct; import com.salesmanager.core.entity.orders.OrderTotal; import com.salesmanager.core.entity.orders.OrderTotalSummary; import com.salesmanager.core.entity.orders.ShoppingCart; import com.salesmanager.core.entity.orders.ShoppingCartProduct; import com.salesmanager.core.entity.shipping.Shipping; import com.salesmanager.core.entity.shipping.ShippingInformation; import com.salesmanager.core.entity.shipping.ShippingOption; import com.salesmanager.core.service.ServiceFactory; import com.salesmanager.core.service.order.OrderService; import com.salesmanager.core.util.CurrencyUtil; import com.salesmanager.core.util.LabelUtil; import com.salesmanager.core.util.LocaleUtil; import com.salesmanager.core.util.MiniShoppingCartSerializationUtil; import com.salesmanager.core.util.OrderUtil; import com.salesmanager.core.util.StringUtil; import com.salesmanager.core.util.www.SessionUtil; public class AjaxShoppingCartUtil { private static Logger log = Logger.getLogger(AjaxShoppingCartUtil.class); private void synchronizeProductList(HttpServletRequest req) { // rebuild list HttpSession session = WebContextFactory.get().getSession(); Map orderProducts = SessionUtil.getOrderProducts(req); // transform to a list List products = new ArrayList(); if (orderProducts != null) { Iterator i = orderProducts.keySet().iterator(); while (i.hasNext()) { String line = (String) i.next(); OrderProduct op = (OrderProduct) orderProducts.get(line); products.add(op); } } session.setAttribute("ORDER_PRODUCT_LIST", products); } public void removeProduct(int lineId) { HttpServletRequest req = WebContextFactory.get().getHttpServletRequest(); HttpServletResponse resp = WebContextFactory.get().getHttpServletResponse(); Locale locale = LocaleUtil.getLocale(req); HttpSession session = WebContextFactory.get().getSession(); MerchantStore mStore = SessionUtil.getMerchantStore(req); try { SessionUtil.removeOrderTotalLine(String.valueOf(lineId), req); synchronizeProductList(req); // mini cart ShoppingCart cart = SessionUtil.getMiniShoppingCart(req); if (cart != null) { Collection prds = cart.getProducts(); List prdscart = new ArrayList(); if (prds != null) { Iterator iprd = prds.iterator(); while (iprd.hasNext()) { ShoppingCartProduct scp = (ShoppingCartProduct) iprd.next(); if (scp.getMainCartLine() != null && !scp.getMainCartLine().equals(String.valueOf(lineId))) { prdscart.add(scp); } } } cart.setProducts(prdscart); String sc = MiniShoppingCartSerializationUtil.serializeToJSON(cart); if (prdscart != null && prdscart.size() > 0) { SessionUtil.removeMiniShoppingCart(req); } } MerchantStore store = SessionUtil.getMerchantStore(req); MiniShoppingCartUtil.calculateTotal(cart, store); } catch (Exception e) { log.error(e); } } /** * Synchronize Session objects with passed parameters Validates input * parameters Then delegates to OrderService for OrderTotalSummary * calculation. Invoked when recalculate, remove product and changing quantities * * @param products */ public OrderTotalSummary calculate(OrderProduct[] products, ShippingInformation shippingMethodLine) { // subtotal // quantity // tax // shipping // handling // other prices HttpServletRequest req = WebContextFactory.get().getHttpServletRequest(); MerchantStore store = SessionUtil.getMerchantStore(req); String currency = store.getCurrency(); // requires order from http session Order order = SessionUtil.getOrder(req); if (order != null && !StringUtils.isBlank(order.getCurrency())) { currency = order.getCurrency(); } OrderTotalSummary total = new OrderTotalSummary(currency); Customer customer = SessionUtil.getCustomer(req); // Shipping ShippingInformation shippingInfo = SessionUtil.getShippingInformation(req); Shipping shipping = null; if (shippingInfo == null) { shippingInfo = new ShippingInformation(); } if (shippingMethodLine != null && shippingMethodLine.getShippingMethodId() == null) {// reset // shipping // shippingMethodLine = new ShippingInformation(); if (req.getSession().getAttribute("PRODUCTLOADED") != null) { shipping = new Shipping(); shipping.setHandlingCost(shippingInfo.getHandlingCost()); shipping.setShippingCost(shippingInfo.getShippingCost()); shipping.setShippingDescription(shippingInfo.getShippingMethod()); shipping.setShippingModule(shippingInfo.getShippingModule()); req.getSession().removeAttribute("PRODUCTLOADED"); } else { shippingInfo.setShippingCostText( CurrencyUtil.displayFormatedAmountWithCurrency(new BigDecimal("0"), store.getCurrency())); shippingInfo.setShippingMethodId(null); shippingInfo.setShippingMethod(null); shippingInfo.setShippingCost(new BigDecimal("0")); try { SessionUtil.removeShippingInformation(req); } catch (Exception e) { log.error(e); } } } else { // retreive shipping info in http session shipping = new Shipping(); Map shippingOptionsMap = SessionUtil.getShippingMethods(req); String method = shippingMethodLine.getShippingMethodId(); if (shippingInfo.getShippingCost() != null && shippingInfo.getShippingMethod() != null) { shipping.setHandlingCost(shippingInfo.getHandlingCost()); shipping.setShippingCost(shippingInfo.getShippingCost()); shipping.setShippingDescription(shippingInfo.getShippingMethod()); shipping.setShippingModule(shippingInfo.getShippingModule()); } else { if (shippingOptionsMap == null || method == null) { shippingMethodLine.setShippingCostText(CurrencyUtil .displayFormatedAmountWithCurrency(new BigDecimal("0"), store.getCurrency())); // total.setShippingLine(shippingMethodLine); shippingInfo = shippingMethodLine; } else {// after a selection // retreive shipping option ShippingOption option = (ShippingOption) shippingOptionsMap.get(method); // get the latest shipping information (handling, free ...) shippingInfo.setShippingMethodId(option.getOptionId()); shippingInfo.setShippingOptionSelected(option); shippingInfo.setShippingMethod(option.getDescription()); shippingInfo.setShippingCost(option.getOptionPrice()); shippingInfo.setShippingModule(option.getModule()); shipping.setHandlingCost(shippingInfo.getHandlingCost()); shipping.setShippingCost(shippingInfo.getShippingCost()); shipping.setShippingDescription(option.getDescription()); shipping.setShippingModule(option.getModule()); // total.setShipping(true); } } } List productList = new ArrayList(); try { // validate numeric quantity // validate numeric price if (products != null) { // get products from httpsession Map savedOrderProducts = SessionUtil.getOrderProducts(req); Map currentProducts = new HashMap(); if (savedOrderProducts == null) { savedOrderProducts = SessionUtil.createSavedOrderProducts(req); } total.setOrderProducts(products); if (order == null) { log.error("No order exist for the price calculation"); total.setErrorMessage( LabelUtil.getInstance().getText(req.getLocale(), "messages.genericmessage")); return total; } // validates amounts BigDecimal oneTimeSubTotal = total.getOneTimeSubTotal(); List prdscart = null; ShoppingCart cart = SessionUtil.getMiniShoppingCart(req); for (int i = 0; i < products.length; i++) { //get product submited OrderProduct product = products[i]; currentProducts.put(String.valueOf(product.getLineId()), product); // get the original line OrderProduct oproduct = (OrderProduct) savedOrderProducts .get(String.valueOf(product.getLineId())); oproduct.setPriceErrorMessage(null); oproduct.setErrorMessage(null); productList.add(oproduct); // check that productid match if (product.getProductId() != oproduct.getProductId()) {// set // an // error // message oproduct.setErrorMessage(LabelUtil.getInstance().getText(req.getLocale(), "messages.invoice.product.invalid")); //oproduct.setPriceText("0"); //oproduct.setProductPrice(new BigDecimal(0)); oproduct.setPriceFormated(CurrencyUtil.displayFormatedAmountWithCurrency(new BigDecimal(0), store.getCurrency())); continue; } //validate if quantity is valid if (product.getProductQuantity() > oproduct.getProductQuantityOrderMax()) { oproduct.setErrorMessage( LabelUtil.getInstance().getText(req.getLocale(), "messages.invalid.quantity")); product.setProductQuantity(product.getProductQuantityOrderMax()); continue; } // validate and set the final price try { product.setPriceErrorMessage(null);// reset any error // message product.setErrorMessage(null); // set price submited BigDecimal price = oproduct.getProductPrice(); oproduct.setPriceText(product.getPriceText()); oproduct.setProductPrice(price); oproduct.setProductQuantity(product.getProductQuantity()); double finalPrice = price.doubleValue() * product.getProductQuantity(); BigDecimal bdFinalPrice = new BigDecimal(finalPrice); // price calculated @todo can remove, use priceFormated oproduct.setCostText( CurrencyUtil.displayFormatedAmountWithCurrency(bdFinalPrice, store.getCurrency())); oproduct.setPriceFormated( CurrencyUtil.displayFormatedAmountWithCurrency(bdFinalPrice, store.getCurrency())); // final price is price * quantity oproduct.setFinalPrice(bdFinalPrice); } catch (NumberFormatException nfe) { oproduct.setPriceErrorMessage( LabelUtil.getInstance().getText(req.getLocale(), "messages.price.invalid")); oproduct.setPriceText("0"); oproduct.setProductPrice(new BigDecimal(0)); oproduct.setCostText(CurrencyUtil.displayFormatedAmountWithCurrency(new BigDecimal(0), store.getCurrency())); oproduct.setPriceFormated(CurrencyUtil.displayFormatedAmountWithCurrency(new BigDecimal(0), store.getCurrency())); // set shipping to 0 ShippingInformation info = new ShippingInformation(); shippingMethodLine.setShippingCostText(CurrencyUtil .displayFormatedAmountWithCurrency(new BigDecimal("0"), store.getCurrency())); total.setShippingLine(info); total.setShippingTotal(new BigDecimal("0")); } // check mini cart products and adjust quantity if (cart != null) { Collection prds = cart.getProducts(); if (prds != null) { Iterator iprd = prds.iterator(); while (iprd.hasNext()) { ShoppingCartProduct scp = (ShoppingCartProduct) iprd.next(); if (scp.getMainCartLine() != null && scp.getMainCartLine().equals(String.valueOf(products[i].getLineId()))) { scp.setQuantity(products[i].getProductQuantity()); } } } } } // save mini cart if (cart != null) { MiniShoppingCartUtil.calculateTotal(cart, store); } List removable = null; // cleanup http session Iterator it = savedOrderProducts.keySet().iterator(); while (it.hasNext()) { String key = (String) it.next(); if (!currentProducts.containsKey(key)) { if (removable == null) { removable = new ArrayList(); } removable.add(key); } } if (removable != null) { Iterator removIt = removable.iterator(); while (removIt.hasNext()) { String key = (String) removIt.next(); SessionUtil.removeOrderTotalLine(key, req); } } OrderService oservice = (OrderService) ServiceFactory.getService(ServiceFactory.OrderService); total = oservice.calculateTotal(order, productList, customer, shipping, store.getCurrency(), LocaleUtil.getLocale(req)); OrderProduct[] opArray = new OrderProduct[productList.size()]; OrderProduct[] o = (OrderProduct[]) productList.toArray(opArray); total.setOrderProducts(o); total.setShippingLine(shippingInfo); Order savedOrder = SessionUtil.getOrder(req); savedOrder.setTotal(total.getTotal()); savedOrder.setOrderTax(total.getTaxTotal()); savedOrder.setRecursiveAmount(total.getRecursiveSubTotal()); SessionUtil.setOrder(savedOrder, req); Map totals = OrderUtil.getOrderTotals(order.getOrderId(), total, store.getCurrency(), LocaleUtil.getLocale(req)); // transform totals to a list List totalsList = new ArrayList(); if (totals != null) { Iterator totalsIterator = totals.keySet().iterator(); while (totalsIterator.hasNext()) { String key = (String) totalsIterator.next(); OrderTotal t = (OrderTotal) totals.get(key); totalsList.add(t); } } SessionUtil.setOrderTotals(totalsList, req); } } catch (Exception e) { log.error(e); total = new OrderTotalSummary(store.getCurrency()); total.setErrorMessage(LabelUtil.getInstance().getText(req.getLocale(), "messages.genericmessage")); } ShippingInformation shippingLine = total.getShippingLine(); if (shippingLine != null) { shippingLine.setShippingCostText(CurrencyUtil .displayFormatedAmountWithCurrency(shippingLine.getShippingCost(), store.getCurrency())); } else { shippingLine = new ShippingInformation(); shippingLine.setShippingCostText( CurrencyUtil.displayFormatedAmountWithCurrency(new BigDecimal("0"), store.getCurrency())); } if (shippingLine.getHandlingCost() != null) { shippingLine.setHandlingCostText(CurrencyUtil .displayFormatedAmountWithCurrency(shippingMethodLine.getHandlingCost(), store.getCurrency())); } if (total.getShippingTotal() != null) { total.setShippingTotalText( CurrencyUtil.displayFormatedAmountWithCurrency(total.getShippingTotal(), store.getCurrency())); } if (total.getOneTimeSubTotal() != null) { total.setOneTimeSubTotalText(CurrencyUtil.displayFormatedAmountWithCurrency(total.getOneTimeSubTotal(), store.getCurrency())); } if (total.getRecursiveSubTotal() != null) { total.setRecursiveSubTotalText(CurrencyUtil .displayFormatedAmountWithCurrency(total.getRecursiveSubTotal(), store.getCurrency())); } if (total.getTotal() != null) { total.setTotalText( CurrencyUtil.displayFormatedAmountWithCurrency(total.getTotal(), store.getCurrency())); } synchronizeProductList(req); return total; } }