How to use AND operator in hibernate Detached criteria query?

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How to use AND operator in hibernate Detached criteria query?

How to use AND operator in hibernate Detached criteria query?

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June 1, 2012 at 5:43 PM

You can use AND operator in hibernate detachedCriteria through Restrictions.conjunction(). Detached Criteria query is a facility provide by Hibernate to write criteria queries in ?detached mode?, where hibernate session is not available. You can instantiate this class anywhere.

Example :

package net.roseindia.main;

import java.util.*;
import net.roseindia.table.Employee;
import net.roseindia.util.HibernateUtil;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Property;
import org.hibernate.criterion.Restrictions;

public class DetachedCriteriaAND {
    public static void main(String[] args) {
        DetachedCriteria detachedCriteria = DetachedCriteria
                .forClass(Employee.class);
        detachedCriteria.add(Restrictions.conjunction()).add(
                Property.forName("id").eq(4)).add(
                Property.forName("name").like("R%"));
        SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
        Session session = sessionFactory.openSession();
        List<Employee> employeeList = new ArrayList<Employee>();
        employeeList = detachedCriteria.getExecutableCriteria(session).list();
        Iterator it = employeeList.iterator();
        while (it.hasNext()) {
            Employee employee = (Employee) it.next();
            System.out.println("Name : " + employee.getName());
            System.out.println("Salary : " + employee.getSalary());
            System.out.println("Date of Join : " + employee.getDateOfJoin());
        }
        session.close();

    }
}

Output :

 Hibernate: select this_.emp_id as emp1_0_0_, this_.date_of_join as date2_0_0_, this_.name as name0_0_, this_.salary as salary0_0_ from employee this_ where 1=1 and this_.emp_id=? and this_.name like ?
Name : Roxi
Salary : 220000
Date of Join : 2001-02-03 00:00:00.0

Description: In this example we are checking two conditions (id must be equal to 4 and name must start with R character) combinedly. Restrictions.conjunction() is used here for AND operator. Restrictions.conjunction() combinedly check both conditions and return true if both conditions are true

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