Hibernate CreateCriteria
In this section we will discuss how to create criteria with example.
Hibernate CreateCriteria() :
Criteria is highly object oriented concept of Hibernate. It is used to create
and execute object-oriented queries.
As HQL is minimal Object oriented ,so you can say it is good alternative of HQL.
For Criteria interface import org.hibernate.Criteria. Session works as factory
for the criteria instance.
It is very useful where number of conditions are used. CreateCriteria() method
is used to call Criteria query.
Criteria criteria=session.createCriteria(Student.class);
Example :
package net.roseindia.main; import net.roseindia.table.Student; import net.roseindia.util.HibernateUtil; import java.util.*; import org.hibernate.Criteria; import org.hibernate.HibernateException; import org.hibernate.Session; public class MainClazz { public static void main(String[] args) { Session session = HibernateUtil.getSessionFactory().openSession(); Criteria criteria=session.createCriteria(Student.class); try { List<Student> list =new ArrayList<Student>(); list= criteria.list(); Iterator iterator = list.iterator(); System.out.println("RollNo.\tName\tCourse"); while (iterator.hasNext()) { Student student = (Student) iterator.next(); System.out.print(student.getRoll()); System.out.print("\t"+student.getName()); System.out.println("\t"+student.getCourse()); } session.flush(); } catch (HibernateException e) { e.printStackTrace(); } finally { session.close(); } } }
Output :
Hibernate: select this_.roll_no as roll1_0_0_, this_.course as course0_0_, this_.name as name0_0_ from student this_ RollNo. Name Course 1 Ron java 3 Roxi unix 4 Jenson Hibernate 5 jacqub Hibernate 6 Mandy C 8 John Hibernate 9 Linda Hibernate