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Hibernate Criteria

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In this tutorial we are going to discuss Hibernate Criteria with example.

Hibernate Criteria

In this tutorial we are going to discuss Hibernate Criteria with example.

Hibernate Criteria :

Hibernate provide a highly object oriented concept of Criteria to handle database. For using Criteria import interface org.hibernate.Criteria.
Criteria query interact with your persistent class. createCriteria() method is used for creating criteria which is provided by Hibernate Session Interface.

Criteria criteria = session.createCriteria(Student.class);

Here Student is our persistent bean class where our database table is mapped. session is object of Hibernate Session interface.

Example: Here is your main class code-

package net.roseindia.main;

import net.roseindia.table.Student;
import net.roseindia.util.ConnectionUtil;
import java.util.*;
import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;

public class Application {
public static void main(String[] args) {
SessionFactory sessionFactory = ConnectionUtil.getSessionFactory();
Session session = sessionFactory.openSession();
Criteria criteria = session.createCriteria(Student.class);
criteria.setResultTransformer(criteria.DISTINCT_ROOT_ENTITY);
List<Student> studentList = new ArrayList<Student>();
studentList = criteria.list();
Iterator it = studentList.iterator();
System.out.println("Roll No.\tName\tCourse\tAddress");
while (it.hasNext()) {
Student student = (Student) it.next();
System.out.print(student.getRoll());
System.out.print("\t\t"+student.getName());
System.out.print("\t"+student.getCourse());
System.out.print("\t"+student.getAddress());
System.out.println();
}
session.close();
}
}

Output:

Hibernate: select this_.roll_no as roll1_0_0_, this_.address as address0_0_, this_.course as course0_0_, this_.student_name as student4_0_0_ from student this_
Roll No. Name      Course   Address
1        Rohan     B.Tech   Patna
2        Mandy     B.Tech   London
3        Samsung   MCA      new delhi
4        Vinay     MCA      Patna

Click here to download complete source code

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Posted on: July 11, 2012

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