权限表设计之代码解析 - c++编程基础

在权限表设计中已经说了权限表的结构，在这里我说下代码

user表

html">@Entity
@Table(name="user")
public class User implements Serializable{

	
    private static final long serialVersionUID = 6177417450707400228L;
	
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name="userid",nullable=false)
	private int userId;
    
	@Column(name="username")
	private String userName;
	
	@Column(name="userpassword")
    private String userPassword;
	
    /*
     * cascade：为级联操作，里面有级联保存，级联删除等，all为所有 
     * fetch：加载类型，有lazy和eager二种，
     *   eager为急加载，意为立即加载，在类加载时就加载，lazy为慢加载，第一次调用的时候再加载，由于数据量太大，onetomany一般为lazy
     * mappedBy：这个为manytoone中的对象名，这个不要变哦
     * 
     * 
  
   :为要获得的mappedBy的类
     */
    @OneToMany(fetch=FetchType.LAZY,mappedBy="user",cascade=CascadeType.ALL)
	private List
   
     listUserRole; public int getUserId() { return userId; } public void setUserId(int userId) { this.userId = userId; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getUserPassword() { return userPassword; } public void setUserPassword(String userPassword) { this.userPassword = userPassword; } public List
    
      getListUserRole() { return listUserRole; } public void setListUserRole(List
     
       listUserRole) { this.listUserRole = listUserRole; } }?

userrole表

@Entity
@Table(name="userrole")
public class UserRole implements Serializable{
    
	private static final long serialVersionUID = 6177417450707400228L;
	
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name="id",nullable=false)
	private int id;
	
	@ManyToOne(fetch=FetchType.EAGER,cascade=CascadeType.ALL)
	@JoinColumn(name="userid")
	private User user;
	
    @ManyToOne(fetch=FetchType.EAGER,cascade=CascadeType.ALL)
	@JoinColumn(name="roleid")
	private Role role;
	
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	
	public User getUser() {
		return user;
	}
	public void setUser(User user) {
		this.user = user;
	}
	
	public Role getRole() {
		return role;
	}

	public void setRole(Role role) {
		this.role = role;
	}
	
}

role表

@Entity
@Table(name="role")
public class Role implements Serializable{
	
	
	private static final long serialVersionUID = 6177417450707400228L;   
	
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name="roleid",nullable=false)
	private int roleId;
	
	@Column(name="rolename")
    private String roleName;
	
	@OneToMany(fetch=FetchType.LAZY,mappedBy="role",cascade=CascadeType.ALL)
	private List
  
    listUserRole;
	
	@OneToMany(fetch=FetchType.LAZY,mappedBy="role",cascade=CascadeType.ALL)
	private List
   
     listRolePermission; public int getRoleId() { return roleId; } public void setRoleId(int roleId) { this.roleId = roleId; } public String getRoleName() { return roleName; } public void setRoleName(String roleName) { this.roleName = roleName; } public List
    
      getListUserRole() { return listUserRole; } public void setListUserRole(List
     
       listUserRole) { this.listUserRole = listUserRole; } public List
      
        getListRolePermission() { return listRolePermission; } public void setListRolePermission(List
       
         listRolePermission) { this.listRolePermission = listRolePermission; } }

rolepermission表

@Entity
@Table(name="rolepermission")
public class RolePermission implements Serializable{
    
	private

权限表设计之代码解析(一)