org.unitime.timetable.model.ExactTimeMins.java Source code

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Here is the source code for org.unitime.timetable.model.ExactTimeMins.java

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/*
 * UniTime 3.2 - 3.5 (University Timetabling Application)
 * Copyright (C) 2008 - 2013, UniTime LLC, and individual contributors
 * as indicated by the @authors tag.
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
*/
package org.unitime.timetable.model;

import org.hibernate.FlushMode;
import org.unitime.timetable.model.base.BaseExactTimeMins;
import org.unitime.timetable.model.dao.ExactTimeMinsDAO;
import org.unitime.timetable.util.Constants;

/**
 * @author Tomas Muller, Stephanie Schluttenhofer
 */
public class ExactTimeMins extends BaseExactTimeMins implements Comparable {
    private static final long serialVersionUID = 1L;

    /*[CONSTRUCTOR MARKER BEGIN]*/
    public ExactTimeMins() {
        super();
    }

    /**
     * Constructor for primary key
     */
    public ExactTimeMins(java.lang.Long uniqueId) {
        super(uniqueId);
    }

    /*[CONSTRUCTOR MARKER END]*/

    public static ExactTimeMins findByMinPerMtg(int minPerMtg) {
        return (ExactTimeMins) (new ExactTimeMinsDAO()).getSession().createQuery(
                "select m from ExactTimeMins m where m.minsPerMtgMin<=:minPerMtg and :minPerMtg<=m.minsPerMtgMax")
                .setInteger("minPerMtg", minPerMtg).setCacheable(true).setFlushMode(FlushMode.MANUAL)
                .uniqueResult();
    }

    public static int getNrSlotsPerMtg(int minPerMtg) {
        ExactTimeMins ex = findByMinPerMtg(minPerMtg);
        if (ex == null) {
            int slotsPerMtg = (int) Math.round((6.0 / 5.0) * minPerMtg / Constants.SLOT_LENGTH_MIN);
            if (minPerMtg < 30.0)
                slotsPerMtg = Math.min(6, slotsPerMtg);
            return slotsPerMtg;
        } else {
            return ex.getNrSlots().intValue();
        }
    }

    public static int getBreakTime(int minPerMtg) {
        ExactTimeMins ex = findByMinPerMtg(minPerMtg);
        if (ex == null) {
            int slotsPerMtg = (int) Math.round((6.0 / 5.0) * minPerMtg / Constants.SLOT_LENGTH_MIN);
            if (minPerMtg < 30.0)
                slotsPerMtg = Math.min(6, slotsPerMtg);
            int breakTime = 0;
            if (slotsPerMtg % 12 == 0)
                breakTime = 10;
            else if (slotsPerMtg > 6)
                breakTime = 15;
            return breakTime;
        } else {
            return ex.getBreakTime().intValue();
        }
    }

    public static int getNrSlotsPerMtg(int dayCode, int minPerWeek) {
        int nrDays = 0;
        for (int i = 0; i < Constants.NR_DAYS; i++)
            if ((dayCode & Constants.DAY_CODES[i]) != 0)
                nrDays++;
        if (nrDays == 0)
            nrDays = 1;
        int minPerMtg = (int) Math.round(((double) minPerWeek) / nrDays);
        return getNrSlotsPerMtg(minPerMtg);
    }

    public static int getBreakTime(int dayCode, int minPerWeek) {
        int nrDays = 0;
        for (int i = 0; i < Constants.NR_DAYS; i++)
            if ((dayCode & Constants.DAY_CODES[i]) != 0)
                nrDays++;
        if (nrDays == 0)
            nrDays = 1;
        int minPerMtg = (int) Math.round(((double) minPerWeek) / nrDays);
        return getBreakTime(minPerMtg);
    }

    public int compareTo(Object o) {
        if (o == null || !(o instanceof ExactTimeMins))
            return -1;
        ExactTimeMins ex = (ExactTimeMins) o;
        int cmp = getMinsPerMtgMin().compareTo(ex.getMinsPerMtgMin());
        if (cmp != 0)
            return cmp;
        cmp = getMinsPerMtgMax().compareTo(ex.getMinsPerMtgMax());
        if (cmp != 0)
            return cmp;
        return (getUniqueId() == null ? new Long(-1) : getUniqueId())
                .compareTo(ex.getUniqueId() == null ? -1 : ex.getUniqueId());
    }
}