com.overhead.markeugie.manager.AttendanceLogManager.java Source code

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Here is the source code for com.overhead.markeugie.manager.AttendanceLogManager.java

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package com.overhead.markeugie.manager;

import com.overhead.markeugie.entity.AttendanceLog;
import com.overhead.markeugie.entity.Participants;
import com.overhead.markeugie.services.AttendanceLogService;
import com.overhead.markeugie.util.RegistrationHibernateUtil;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.criterion.Restrictions;

/**
 *
 * @author markeugie
 */
public class AttendanceLogManager extends UnicastRemoteObject implements AttendanceLogService {

    public AttendanceLogManager() throws RemoteException {
    }

    private static AttendanceLogManager instance;

    public static AttendanceLogManager getInstance() throws RemoteException {
        if (instance == null) {
            instance = new AttendanceLogManager();
        }
        return instance;
    }

    @Override
    public AttendanceLog getLogByParticipant(Participants participant, Date date) throws RemoteException {

        Session session = RegistrationHibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        Criteria criteria = session.createCriteria(AttendanceLog.class);
        criteria.add(Restrictions.eq("date", date));
        criteria.add(Restrictions.eq("participant", participant));
        criteria.setMaxResults(1);
        AttendanceLog participantLog = (AttendanceLog) criteria.uniqueResult();
        session.getTransaction().commit();
        session.close();

        return participantLog;
    }

    @Override
    public AttendanceLog addLogByParticipant(AttendanceLog participantLog) throws RemoteException {

        Session session = RegistrationHibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        session.save(participantLog);
        session.getTransaction().commit();
        session.close();
        return participantLog;
    }

    @Override
    public AttendanceLog updateLogByParticipant(AttendanceLog participantLog) throws RemoteException {

        Session session = RegistrationHibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        session.update(participantLog);
        session.getTransaction().commit();
        session.close();

        return participantLog;
    }

    @Override
    public List<AttendanceLog> getLateLogByParticipant(Participants participant) throws RemoteException {

        Session session = RegistrationHibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        Criteria criteria = session.createCriteria(AttendanceLog.class);
        criteria.add(Restrictions.eq("participant", participant));
        List<AttendanceLog> attendanceLogs = (List<AttendanceLog>) criteria.list();
        session.getTransaction().commit();
        session.close();

        return attendanceLogs;
    }

    @Override
    public List<AttendanceLog> getAttendanceLogByStudent(String id) throws RemoteException {

        Session session = RegistrationHibernateUtil.getSessionFactory().openSession();
        session.beginTransaction();
        Criteria criteria = session.createCriteria(AttendanceLog.class);
        criteria.add(Restrictions.eq("participant.id", id));
        List<AttendanceLog> attendanceLogs = (List<AttendanceLog>) criteria.list();
        session.getTransaction().commit();
        session.close();

        return attendanceLogs;
    }

}