com.vaadinspring.service.UsersService.java Source code

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Here is the source code for com.vaadinspring.service.UsersService.java

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package com.vaadinspring.service;

import com.vaadinspring.components.HibernateUtil;
import com.vaadinspring.model.Users;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.criterion.Restrictions;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.logout.SecurityContextLogoutHandler;

/**
 *
 * @author m.zhaksygeldy
 */
public class UsersService {

    public void create(Users user) {
        Session session = HibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        session.save(user);
        session.getTransaction().commit();
        session.close();
    }

    public void delete(int id) {
        Session session = HibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        Users user = (Users) session.get(Users.class, id);
        session.delete(user);
        session.getTransaction().commit();
        session.close();
    }

    public void update(Users newUser) {
        Session session = HibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        Users user = (Users) session.merge(newUser);
        session.saveOrUpdate(user);
        session.getTransaction().commit();
        session.close();
    }

    public List<Users> getUsers() {
        Session session = HibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        List<Users> users = session.createCriteria(Users.class).list();
        System.out.println(users.get(0).getLogin());
        session.getTransaction().commit();
        session.close();
        return users;
    }

    public Users getUser(int id) {
        Session session = HibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        Users user = (Users) session.get(Users.class, id);
        session.getTransaction().commit();
        session.close();
        return user;
    }

    public Users getUser(String login) {
        Session session = HibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        Criteria cr = session.createCriteria(Users.class);
        cr.add(Restrictions.eq("login", login));
        Users user = (Users) cr.uniqueResult();
        session.getTransaction().commit();
        session.close();
        return user;
    }

    public Users getCurrent() {
        Users currentUser = new Users();
        currentUser = getUser(SecurityContextHolder.getContext().getAuthentication().getPrincipal().toString());
        return currentUser;
    }

    public void logout() {
        SecurityContextHolder.clearContext();
    }
}