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1
7 package org.jboss.tutorial.callback.bean;
8
9 import java.util.Iterator  ;
10 import java.util.List ;
11 import javax.ejb.PostConstruct;
12 import javax.ejb.PreDestroy;
13 import javax.ejb.Remote ;
14 import javax.ejb.Stateless ;
15 import javax.persistence.EntityManager;
16 import javax.persistence.PersistenceContext;
17
18 @Stateless
19 @Remote (CustomerDAO.class)
20 public class CustomerDAOBean implements CustomerDAO
21 {
22 @PersistenceContext
23 private EntityManager manager;
24
25 public int create(String first, String last, String street, String city, String state, String zip)
26 {
27 System.out.println("-- CustomerDAOBean.create()");
28 Customer customer = new Customer(first, last, street, city, state, zip);
29 manager.persist(customer);
30 return customer.getId();
31 }
32
33 public Customer find(int id)
34 {
35 System.out.println("-- CustomerDAOBean.find()");
36 return manager.find(Customer.class, id);
37 }
38
39 public List findByLastName(String last)
40 {
41 System.out.println("-- CustomerDAOBean.findByLastName(id)");
42 return manager.createQuery("from Customer c where c.last = :last").setParameter("last", last).getResultList();
43 }
44
45 public void merge(Customer c)
46 {
47 System.out.println("-- CustomerDAOBean.merge()");
48 manager.merge(c);
49 }
50
51 public void delete(List l)
52 {
53 System.out.println("-- CustomerDAOBean.delete()");
54 for (Iterator it = l.iterator() ; it.hasNext() ; )
55 {
56 Customer c = (Customer)it.next();
57 manager.remove(c);
58 }
59 }
60
61 @PostConstruct
63 public void postConstructCallback()
64 {
65 System.out.println("PostConstruct - Have EntityManager: " + (manager != null));
66 }
67
68 @PreDestroy
69 public void preDestroyCallback()
70 {
71 System.out.println("PreDestory - Have EntityManager: " + (manager != null));
72 }
73 }
74 |
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