test

Posted on 2006-05-04 08:57 Richie@L 阅读(91) 评论(0) 编辑收藏

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 1package richie.gt.ejb3.manager;
 2
 3import java.util.Collection;
 4
 5import javax.persistence.EntityManager;
 6import javax.persistence.NamedQueries;
 7import javax.persistence.NamedQuery;
 8import javax.persistence.PersistenceContext;
 9
10import richie.gt.ejb3.domain.User;
11import richie.gt.ejb3.service.UserMangerService;
12
13@NamedQueries( ...{
14        @NamedQuery(name = "findUserByName", query = "SELECT u FROM User u WHERE u.userName = : userName"),
15        @NamedQuery(name = "findUserById", query = "SELECT u FROM User u WHERE u.userID = : userID"),
16        @NamedQuery(name = "getAll", query = "SELECT u FROM User u "),
17        @NamedQuery(name = "findByServiceID", query = "SELECT u FROM User u JOIN u.myServices ms JOIN ms.service s WHERE s.serviceID = : serviceID"),
18        @NamedQuery(name = "findByServiceName", query = "SELECT u FROM User u JOIN u.myServices ms JOIN ms.service s WHERE s.serviceName = : serviceName") })
19public class UserManager implements UserMangerService ...{
20
21    @PersistenceContext
22    protected EntityManager em;
23
24    /** *//**
25     * 通过userName查找相应User对象，没有返回Null
26     */
27    public User findByName(String userName) ...{
28        return (User) em.createNamedQuery("findUserByName").setParameter(
29                "userName", userName).getSingleResult();
30    }
31
32    /** *//**
33     * 通过userId查找相应User对象，没有返回Null
34     */
35    public User findById(int id) ...{
36        return (User) em.createNamedQuery("findUserById").setParameter(
37                "userID", id).getSingleResult();
38
39    }
40
41    /** *//**
42     * 返回所有用户列表
43     */
44    public Collection<User> getAll() ...{
45        return em.createNamedQuery("getAll").getResultList();
46    }
47
48    /** *//**
49     * 返回所有开通指定serviceId服务的User列表
50     */
51    public Collection<User> findByServiceID(int serviceID) ...{
52        return em.createNamedQuery("findByServiceID").setParameter("serviceID",
53                serviceID).getResultList();
54
55    }
56
57    /** *//**
58     * 返回所有开通指定serviceName服务的User列表
59     */
60    public Collection<User> findByServiceName(String serviceName) ...{
61        return em.createNamedQuery("findByServiceName").setParameter(
62                "serviceName", serviceName).getResultList();
63    }
64
65    /** *//**
66     * 持久化一个User对象
67     */
68    public void save(User user) ...{
69        em.persist(user);
70
71    }
72
73    /** *//**
74     * 删除一个User对象
75     */
76    public void remove(User user) ...{
77        em.remove(user);
78
79    }
80
81    /** *//**
82     * 获得现有User数量
83     */
84    public int getCount() ...{
85        // TODO Auto-generated method stub
86        return 0;
87    }
88
89}
90