chitchatserver.UserDAO.java Source code

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Here is the source code for chitchatserver.UserDAO.java

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/*
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package chitchatserver;

import ChatPackage.User;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;

/**
 *
 * @author ASUS
 */
public class UserDAO {
    public static ChatPackage.User getUser(String userId) {
        ChatPackage.User rs = null;
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            rs = (ChatPackage.User) session.get(ChatPackage.User.class, userId);
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        } finally {
            session.close();
        }
        return rs;
    }

    public static boolean addUser(User user) {
        if (UserDAO.getUser(user.getId()) != null) {
            return false;
        }
        Session session = HibernateUtil.getSessionFactory().openSession();
        Transaction transaction = null;
        try {
            transaction = session.beginTransaction();
            session.save(user);
            transaction.commit();
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        } finally {
            session.close();
        }
        return true;
    }

    public static boolean updateUser(User user) {
        if (getUser(user.getId()) == null) {
            return false;
        }
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            Transaction transaction = session.beginTransaction();
            session.update(user);
            transaction.commit();
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        } finally {
            session.close();
        }
        return true;
    }

    public static boolean signIn(User user) {
        User u = getUser(user.getId());
        if (u == null || u.getStatus().equals("Online")) {
            return false;
        }
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            List<User> temp = null;
            String hql = "from User u where u.id=:userId and u.pass=:userPass";
            Query query = session.createQuery(hql);
            query.setString("userId", user.getId());
            query.setString("userPass", user.getPass());
            temp = query.list();
            if (temp.size() == 0) {
                return false;
            }
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        } finally {
            session.close();
        }
        return true;
    }

    public static String getStatus(String userId) {
        String rs = "";
        User user = UserDAO.getUser(userId);
        if (user != null) {
            rs = user.getStatus();
        }
        return rs;
    }
}