Set First result and Max results
The following example shows how to implement pagination using Hibernate
setFirstResult and setMaxResults APIs.
Refer first example for the configuration and mapping.
package com.bethecoder.tutorials.hibernate.basic.criteria;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Session;
import com.bethecoder.tutorials.hibernate.basic.Company;
import com.bethecoder.tutorials.hibernate.basic.util.HibernateUtil;
public class CriteriaMaxResultsTest {
private static final int PAGE_SIZE = 4 ;
/**
* @param args
*/
public static void main ( String [] args ) {
Session session = HibernateUtil.getSessionFactory () .openSession () ;
session.beginTransaction () ;
Criteria criteria = session.createCriteria ( Company. class ) ;
int curPage = 2 ;
/**
* Assuming page size of 4.
*
* Page1 (1, 2, 3, 4)
* Page2 (5, 6, 7, 8)
* Page3 (9, 10, 11, 12)
*/
criteria.setFirstResult (( curPage- 1 ) * PAGE_SIZE ) ; //set to start of page
criteria.setMaxResults ( PAGE_SIZE ) ;
List<Company> companies = criteria.list () ;
System.out.println ( "Selected row count : " + companies.size ()) ;
for ( Company company : companies ) {
System.out.println ( company ) ;
}
session.getTransaction () .commit () ;
session.close () ;
}
}
It gives the following output,
Selected row count : 4
{ id = 5, name = ART, employeeCount = 67890,
projectCount = 850, address1 = add1112, address2 = add2223 }
{ id = 6, name = RNK, employeeCount = 98890,
projectCount = 8478, address1 = add1412, address2 = add27823 }
{ id = 7, name = AOQ, employeeCount = 97890,
projectCount = 4578, address1 = add17892, address2 = add2893 }
{ id = 8, name = BQO, employeeCount = 9778,
projectCount = 487, address1 = add1459, address2 = add2443 }