com.askme.dao.UserDAOImpl.java Source code

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Here is the source code for com.askme.dao.UserDAOImpl.java

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package com.askme.dao;

import com.askme.model.User;
import java.util.List;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Projections;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

/**
 *
 * @author Administrator
 */
@Repository
public class UserDAOImpl implements UserDAO {

    @Autowired
    private SessionFactory sessionFactory;

    @SuppressWarnings("unchecked")
    @Override
    public List<User> findAll() {
        return sessionFactory.getCurrentSession().createQuery("from User").list();
    }

    @SuppressWarnings("unchecked")
    @Override
    public List<User> findLast(int limit) {
        return sessionFactory.getCurrentSession().createQuery("from User order by id desc").setMaxResults(limit)
                .list();
    }

    @SuppressWarnings("unchecked")
    @Override
    public List<User> findTopPoint(int limit) {
        return sessionFactory.getCurrentSession().createQuery("from User order by point desc").setMaxResults(limit)
                .list();
    }

    @SuppressWarnings("unchecked")
    @Override
    public User findById(int id) {
        return (User) sessionFactory.getCurrentSession().get(User.class, id);
    }

    @SuppressWarnings("unchecked")
    @Override
    public User findProfile(int id) {
        List<User> users = sessionFactory.getCurrentSession().createQuery(
                "select u from User u LEFT JOIN FETCH u.questions LEFT JOIN FETCH u.answers WHERE u.id = :id")
                .setParameter("id", id).list();
        return (users.isEmpty()) ? null : users.get(0);
    }

    @SuppressWarnings("unchecked")
    @Override
    public User findByEmail(String email) {
        List<User> users = sessionFactory.getCurrentSession().createQuery("from User where email = :email")
                .setParameter("email", email).list();

        return (users.isEmpty()) ? null : users.get(0);
    }

    @Override
    public Long countAll() {
        return (Long) sessionFactory.getCurrentSession().createCriteria(User.class)
                .setProjection(Projections.rowCount()).uniqueResult();
    }

    @Override
    public void save(User user) {
        sessionFactory.getCurrentSession().save(user);
    }

    @Override
    public void update(User user) {
        sessionFactory.getCurrentSession().update(user);
    }

    @Override
    public void upPoint(User user, int point) {
        sessionFactory.getCurrentSession()
                .createQuery("update User u set u.point = u.point + :point where u.id = :id")
                .setParameter("point", point).setParameter("id", user.getId()).executeUpdate();
    }

    @Override
    public void downPoint(User user, int point) {
        sessionFactory.getCurrentSession()
                .createQuery("update User u set u.point = u.point - :point where u.id = :id")
                .setParameter("point", point).setParameter("id", user.getId()).executeUpdate();
    }

    @Override
    public void delete(User user) {
        sessionFactory.getCurrentSession().delete(user);
    }

}