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Java > Open Source Codes > com > ibatis > jpetstore > service > OrderService


1 package com.ibatis.jpetstore.service;
2
3 import com.ibatis.dao.client.DaoManager;
4 import com.ibatis.jpetstore.domain.LineItem;
5 import com.ibatis.jpetstore.domain.Order;
6 import com.ibatis.jpetstore.persistence.DaoConfig;
7 import com.ibatis.jpetstore.persistence.iface.ItemDao;
8 import com.ibatis.jpetstore.persistence.iface.OrderDao;
9 import com.ibatis.jpetstore.persistence.iface.SequenceDao;
10 import com.ibatis.common.util.PaginatedList;
11
12 import java.util.List JavaDoc;
13
14 /**
15  * <p/>
16  * Date: Mar 6, 2004 11:22:36 PM
17  *
18  * @author Clinton Begin
19  */
20 public class OrderService {
21
22   /* Constants */
23
24   private static final OrderService instance = new OrderService();
25
26   /* Private Fields */
27
28   private DaoManager daoManager = DaoConfig.getDaomanager();
29
30   private ItemDao itemDao;
31   private OrderDao orderDao;
32   private SequenceDao sequenceDao;
33
34   /* Constructors */
35
36   public OrderService() {
37     itemDao = (ItemDao) daoManager.getDao(ItemDao.class);
38     sequenceDao = (SequenceDao) daoManager.getDao(SequenceDao.class);
39     orderDao = (OrderDao) daoManager.getDao(OrderDao.class);
40   }
41
42   /* Public Methods */
43
44   public static OrderService getInstance() {
45     return instance;
46   }
47
48   /* ORDER */
49
50   public void insertOrder(Order order) {
51     try {
52       // Get the next id within a separate transaction
53 order.setOrderId(getNextId("ordernum"));
54
55       daoManager.startTransaction();
56
57       itemDao.updateQuantity(order);
58       orderDao.insertOrder(order);
59
60       daoManager.commitTransaction();
61     } finally {
62       daoManager.endTransaction();
63     }
64   }
65
66   public Order getOrder(int orderId) {
67     Order order = null;
68
69     try {
70       daoManager.startTransaction();
71
72       order = orderDao.getOrder(orderId);
73
74       for (int i = 0; i < order.getLineItems().size(); i++) {
75         LineItem lineItem = (LineItem) order.getLineItems().get(i);
76         lineItem.setItem(itemDao.getItem(lineItem.getItemId()));
77       }
78
79       daoManager.commitTransaction();
80     } finally {
81       daoManager.endTransaction();
82     }
83
84     return order;
85   }
86
87   public PaginatedList getOrdersByUsername(String JavaDoc username) {
88     return orderDao.getOrdersByUsername(username);
89   }
90
91   /* SEQUENCE */
92
93   public synchronized int getNextId(String JavaDoc key) {
94     return sequenceDao.getNextId(key);
95   }
96
97
98 }
99
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