placeorderaction.java

Java EE 5 许多新功能都包含经过修补的 EJB 架构

/*
 * Copyright 2006 Borys Burnayev
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * 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.rdacorp.petstore.web.action;

import java.math.BigDecimal;

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

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import com.rdacorp.petstore.business.dao.ConcurrentModificationException;
import com.rdacorp.petstore.domain.Account;
import com.rdacorp.petstore.domain.Address;
import com.rdacorp.petstore.domain.CreditCardCompany;
import com.rdacorp.petstore.domain.Item;
import com.rdacorp.petstore.domain.Order;
import com.rdacorp.petstore.domain.OrderItem;
import com.rdacorp.petstore.domain.Payment;
import com.rdacorp.petstore.domain.Person;
import com.rdacorp.petstore.domain.State;

/**
 * @author Borys Burnayev
 */
public class PlaceOrderAction extends Action {

   public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
            HttpServletResponse response) throws Exception {
      PetStoreSession session = new PetStoreSession(request.getSession());
      PetStoreApplication application = session.getApplication();
      Account account = session.getAccount();
      MaintainCartForm cart = session.getCart();
      MaintainOrderForm orderForm = session.getOrder();
      Person billingPerson = new Person(orderForm.getBillingFirstName(), orderForm.getBillingLastName(), null,
               new PhoneNumber(orderForm.getBillingPhone()).getPhone());
      Person shippingPerson = new Person(orderForm.getShippingFirstName(), orderForm.getShippingLastName(), null,
               new PhoneNumber(orderForm.getShippingPhone()).getPhone());
      State billingState = session.getBillingState();
      Address billingAddress = new Address(orderForm.getBillingAddressLine1(), orderForm.getBillingAddressLine2(),
               orderForm.getBillingCity(), new Zip(orderForm.getBillingZip()).getZip(), billingState);
      State shippingState = session.getShippingState();
      Address shippingAddress = new Address(orderForm.getShippingAddressLine1(), orderForm.getShippingAddressLine2(),
               orderForm.getShippingCity(), new Zip(orderForm.getShippingZip()).getZip(), shippingState);
      BigDecimal amount = cart.getTotal();
      CreditCardCompany creditCardCompany = session.getCreditCardCompany();
      Payment payment = new Payment(amount, null, orderForm.getCreditCardNumber(), orderForm.getExpirationMonth(),
               orderForm.getExpirationYear(), creditCardCompany, account);
      Order order = new Order(amount, billingPerson, billingAddress, shippingPerson, shippingAddress, payment);
      order.setOrderItems(cart.getOrderItems());
      for (OrderItem orderItem : cart.getOrderItems()) {
         orderItem.setOrder(order);
      }
      Order placedOrder = null;
      try {
         placedOrder = application.getPetStoreService().placeOrder(order);
      }
      catch (ConcurrentModificationException e) {
         for (OrderItem orderItem : order.getOrderItems()) {
            Item item = orderItem.getItem();
            String itemCode = item.getCode();
            Item freshItem = application.getPetStoreService().findItem(itemCode);
            if (orderItem.getQuantity() > freshItem.getAvailableQuantity()) {
               session.getCart().removeItem(itemCode);
               ActionMessages errors = new ActionMessages();
               errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("error.out.of.stock", itemCode));
               saveErrors(request, errors);
               return mapping.findForward("success");
            }
            orderItem.setItem(freshItem);
         }
         try {
            placedOrder = application.getPetStoreService().placeOrder(order);
         }
         catch (ConcurrentModificationException e1) {
            ActionMessages errors = new ActionMessages();
            errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("error.high.concurrency"));
            saveErrors(request, errors);
            return mapping.findForward("success");
         }
      }
      request.setAttribute("order", placedOrder);
      session.clearCart();
      return mapping.findForward("success");
   }
}