    001package net.sf.cpsolver.studentsct;
    002
    003import org.apache.log4j.Logger;
    004
    005import net.sf.cpsolver.ifs.util.Callback;
    006
    007/**
    008 * Abstract student sectioning loader class.
    009 *
    010 * @version StudentSct 1.2 (Student Sectioning)<br>
    011 *          Copyright (C) 2007 - 2010 Tomáš Müller<br>
    012 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
    013 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
    014 * <br>
    015 *          This library is free software; you can redistribute it and/or modify
    016 *          it under the terms of the GNU Lesser General Public License as
    017 *          published by the Free Software Foundation; either version 3 of the
    018 *          License, or (at your option) any later version. <br>
    019 * <br>
    020 *          This library is distributed in the hope that it will be useful, but
    021 *          WITHOUT ANY WARRANTY; without even the implied warranty of
    022 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    023 *          Lesser General Public License for more details. <br>
    024 * <br>
    025 *          You should have received a copy of the GNU Lesser General Public
    026 *          License along with this library; if not see
    027 *          <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
    028 */
    029
    030public abstract class StudentSectioningLoader implements Runnable {
    031    private StudentSectioningModel iModel = null;
    032    private Callback iCallback = null;
    033
    034    /**
    035     * Constructor
    036     *
    037     * @param model
    038     *            an empty instance of timetable model
    039     */
    040    public StudentSectioningLoader(StudentSectioningModel model) {
    041        iModel = model;
    042    }
    043
    044    /**
    045     * Returns provided model.
    046     *
    047     * @return provided model
    048     */
    049    protected StudentSectioningModel getModel() {
    050        return iModel;
    051    }
    052
    053    /**
    054     * Load the model.
    055     */
    056    public abstract void load() throws Exception;
    057
    058    /**
    059     * Sets callback class
    060     *
    061     * @param callback
    062     *            method {@link Callback#execute()} is executed when load is
    063     *            done
    064     */
    065    public void setCallback(Callback callback) {
    066        iCallback = callback;
    067    }
    068
    069    @Override
    070    public void run() {
    071        try {
    072            load();
    073        } catch (Exception e) {
    074            Logger.getLogger(this.getClass()).error(e.getMessage(), e);
    075        } finally {
    076            if (iCallback != null)
    077                iCallback.execute();
    078        }
    079    }
    080
    081}