maintaincartform.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 java.util.ArrayList;
import java.util.List;

import org.apache.struts.action.ActionForm;

import com.rdacorp.petstore.domain.Item;
import com.rdacorp.petstore.domain.OrderItem;

/**
 * @author Borys Burnayev
 */
public class MaintainCartForm extends ActionForm {

   private static final long serialVersionUID = -6831448114335751205L;

   private List<OrderItem> orderItems;

   private String action;

   public String getAction() {
      return action;
   }

   public void setAction(String action) {
      this.action = action;
   }

   public MaintainCartForm() {
      super();
      orderItems = new ArrayList<OrderItem>(10);
   }

   public void removeItem(String itemCode) {
      OrderItem removedItem = null;
      for (int i = 0; i < orderItems.size(); i++) {
         OrderItem currentItem = orderItems.get(i);
         if (currentItem.getItem().getCode().equals(itemCode)) {
            removedItem = currentItem;
            break;
         }
      }
      if (removedItem != null)
         orderItems.remove(removedItem);
   }

   public void addItem(Item item) {
      long currentQuantity = 0;
      for (int i = 0; i < orderItems.size(); i++) {
         OrderItem currentItem = orderItems.get(i);
         if (currentItem.getItem().equals(item)) {
            currentQuantity = currentItem.getQuantity();
            currentItem.setQuantity(currentQuantity + 1);
            break;
         }
      }
      if (currentQuantity == 0) {
         orderItems.add(new OrderItem(1, item));
      }
   }

   public void updateItemQuantity(String itemCode, long itemQuantity) {
      if (itemQuantity > 0) {
         for (int i = 0; i < orderItems.size(); i++) {
            OrderItem currentItem = orderItems.get(i);
            if (currentItem.getItem().getCode().equals(itemCode)) {
               currentItem.setQuantity(itemQuantity);
               break;
            }
         }
      }
      else {
         removeItem(itemCode);
      }
   }

   public List<OrderItem> getOrderItems() {
      return orderItems;
   }

   public void setOrderItems(List<OrderItem> orderItems) {
      this.orderItems = orderItems;
   }

   public OrderItem getOrderItem(int i) {
      return orderItems.get(i);
   }

   public void setOrderItem(int i, OrderItem orderItem) {
      orderItems.set(i, orderItem);
   }

   public BigDecimal getTotal() {
      BigDecimal total = new BigDecimal(0.0);
      for (OrderItem orderItem : orderItems) {
         total = total.add(orderItem.getExtendedPrice());
      }
      return total;
   }
}