Hibernate Session Get
This part of discussion contain description of Hibernate session get () method.
Hibernate session.get() :
The get() method returns real persistent object of the mentioned class with
specified identifier.
If object already associated with the session, it will return the same object
and return null if persistent object doesn't exist.
The get() method hits the database it means that whenever you call get() method,
Hibernate generate SQL statement to fetch the associated data to rebuild your
persistent object.
Object get(Class Clazz,Serializable id)
Clazz- persistent class
id -identifier
Returns-a persistent object or null
Throws-HibernateException
Example :
package net.roseindia.main;
import net.roseindia.table.Student;
import net.roseindia.util.HibernateUtil;
import org.hibernate.HibernateException;
import org.hibernate.Session;
public class HibernateSessionLoad {
public static void main(String args[]) {
Session session = HibernateUtil.getSessionFactory().openSession();
int roll = 6;
try {
Student student = (Student) session.get(Student.class, roll);
//student record of roll=6)
System.out.println("RollNo. :" + student.getRoll());
System.out.println("Name :" + student.getName());
System.out.println("Course :" + student.getCourse());
session.close();
} catch (HibernateException e) {
e.printStackTrace();
}
}
}
Output :
Hibernate: select student0_.roll_no as roll1_0_0_, student0_.course as course0_0_, student0_.name as name0_0_ from student student0_ where student0_.roll_no=? RollNo. :6 Name :Mandy Course :C