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1
22 package org.jboss.ejb3.test.relationships;
23
24 import java.util.Collection  ;
25 import java.util.Iterator ;
26 import javax.ejb.Remote ;
27 import javax.ejb.Stateless ;
28 import javax.persistence.EntityManager;
29 import javax.persistence.PersistenceContext;
30 import javax.persistence.PersistenceContext;
31
32
38 @Stateless
39 @Remote (SessionRemote.class)
40 public class SessionBean implements SessionRemote
41 {
42 @PersistenceContext
43 private EntityManager em;
44
45 public void createCategory()
46 {
47 Category category = new Category();
48 category.setId(1);
49 em.persist(category);
50 }
51
52 public void createItem()
53 {
54 System.out.println("++++++++++++++++++++++");
55 Category category = em.find(Category.class, 1L);
56 Item item = new Item();
57 item.setId(1);
58 item.setName("hello");
59 category.getItems().add(item);
60 }
61
62 public int getNumItems()
63 {
64 Category category = em.find(Category.class, 1L);
65 for (Item i : category.getItems())
66 {
67 System.out.println(i.getName());
68 }
69 return category.getItems().size();
70 }
71
72 public long createCustomer()
73 {
74 Customer cust = new Customer();
75 CustomerRecord record = new CustomerRecord();
76 cust.setCustomerRecord(record);
77 em.persist(cust);
79 return cust.getId();
80 }
81
82 public void testInverse(long id)
83 {
84 CustomerRecord record = em.find(CustomerRecord.class, id);
85 record.setCustomer(null);
86 }
87
88
89 public Customer getCustomer(long id)
90 {
91 return em.find(Customer.class, id);
92 }
93
94 public long creatOrder()
95 {
96 Order order = new Order();
97 em.persist(order);
98 LineItem beer = new LineItem();
99 beer.setProduct("beer");
100 LineItem wine = new LineItem();
101 wine.setProduct("wine");
102
103 beer.setOrder(order);
104 em.persist(beer);
105 wine.setOrder(order);
106 em.persist(wine);
107 return order.getId();
108 }
109
110 public Order getOrder(long id)
111 {
112 return em.find(Order.class, id);
113 }
114
115 public void deleteOne(long itemId)
116 {
117 LineItem item = em.find(LineItem.class, itemId);
118 item.getOrder().getItems().remove(item);
119 em.remove(item);
120 }
121
122 public void deleteFromCollection(long orderId)
123 {
124 Order order = em.find(Order.class, orderId);
125 Collection <LineItem> items = order.getItems();
126 Iterator <LineItem> it = items.iterator();
127 while (it.hasNext())
128 {
129 LineItem item = it.next();
130 it.remove();
131 item.setOrder(null);
132 break;
133 }
134 System.out.println("****** " + order.getItems().size());
135 }
136
137 public void merge(Order order)
138 {
139 em.merge(order);
140 }
141 }
142 |
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