我必须通过休眠创建模型

Question

我必须根据我的应用需求定义4个模型  Real_User，Tourism_Questions_Table，Tourism_User_Questions表和  Tourism_Answers_Table。我必须绘制他们无法绘制的地图  弥补  首先，我有一个Real_User模型  创建并填充了一些数据，并且效果很好

@Entity( name = Real_User)
public class RealUser {
@Id
@Column(name = "Email")
private String email;

@Column(name = "FirstName")
private String firstName;

@Column(name = "LastName")
private String lastName;

@Column(name = "Password")
private String password;

@Column(name = "Enabled")
private boolean enabled;

@Column(name = "Role")
private String role; 

// getters and setters 

}

Now , I have got a model Tourism_Question_Table
(specific to each role I have) to create

@Entity ( name = Tourism_Questions_Table)
public class TourismQuestion {
@Id
@Column(name = "QuestionId")
private int questionId;

@Column(name = "Question")
private String question;

@Column(name = "TimeAsked")
private Date timeAsked;

// getters and setters 

} 

// Third model , reflects the data on who asked the question

// I have a requirement to take email as a Primary key from the Real_User
// table
// and questionId as a foreign key from the Tourism_Questions_Table


@Entity ( name = Tourism_User_Questions)
public class TourismUserQuestions {

// what's should be the hibernate annotations for these below two fields ?

private String email;
private int questionId;

// getters and setters 

}

// For this last model I have to take email from the Real_User_Table
// and questionId from the Tourism_Questions_Table and makes them as
// the composite key in it to the reflect on who answered the question


 @Entity ( name = Tourism_Answer_Table)
 public class TourismAnswer {

 // what's should be the hibernate annotations for these below two fields ?

 private String email;
 private int questionId;
 private String answer;

 // getters and setters 
 }

Need your help mates