GoogleBin - Java Code Tricks: Hibernate Many-To-Many Mapping Example Part

package com.vaannila.student;

 

// Generated May 30, 2009 6:48:40 AM by Hibernate Tools 3.2.4.GA

 

/**

*  This class contains the course details.

* 

*/

public class Course implements java.io.Serializable {

 

private long courseId;

private String courseName;

 

public Course() {

}

 

public Course(String courseName) {

this.courseName = courseName;

}

 

public long getCourseId() {

return this.courseId;

}

 

public void setCourseId(long courseId) {

this.courseId = courseId;

}

 

public String getCourseName() {

return this.courseName;

}

 

public void setCourseName(String courseName) {

this.courseName = courseName;

}

 

}

package com.vaannila.student;

 

import java.util.HashSet;

import java.util.Set;

 

import org.hibernate.HibernateException;

import org.hibernate.Session;

import org.hibernate.Transaction;

 

import com.vaannila.util.HibernateUtil;

 

public class Main {

 

public static void main(String[] args) {

 

Session session = HibernateUtil.getSessionFactory().openSession();

Transaction transaction = null;

try {

transaction = session.beginTransaction();

 

Set<Course> courses = new HashSet<Course>();

courses.add(new Course("Maths"));

courses.add(new Course("Computer Science"));

 

Student student1 = new Student("Eswar", courses);

Student student2 = new Student("Joe", courses);

session.save(student1);

session.save(student2);

 

transaction.commit();

} catch (HibernateException e) {

transaction.rollback();

e.printStackTrace();

} finally {

session.close();

}

 

}

}

Create the Main class to run the example.

package com.vaannila.student;

 

import java.util.HashSet;

import java.util.Set;

 

import org.hibernate.HibernateException;

import org.hibernate.Session;

import org.hibernate.Transaction;

 

import com.vaannila.util.HibernateUtil;

 

public class Main {

 

public static void main(String[] args) {

 

Session session = HibernateUtil.getSessionFactory().openSession();

Transaction transaction = null;

try {

transaction = session.beginTransaction();

 

Set<Course> courses = new HashSet<Course>();

courses.add(new Course("Maths"));

courses.add(new Course("Computer Science"));

 

Student student1 = new Student("Eswar", courses);

Student student2 = new Student("Joe", courses);

session.save(student1);

session.save(student2);

 

transaction.commit();

} catch (HibernateException e) {

transaction.rollback();

e.printStackTrace();

} finally {

session.close();

}

 

}

}