    001package net.sf.cpsolver.coursett.criteria.placement;
    002
    003import java.util.Collection;
    004import java.util.Map;
    005
    006import net.sf.cpsolver.coursett.criteria.TimetablingCriterion;
    007import net.sf.cpsolver.coursett.model.Lecture;
    008import net.sf.cpsolver.ifs.util.DataProperties;
    009
    010/**
    011 * Abstract class for all criteria that are to be used only in the placement selection
    012 * (do not have any impact on the overall solution value). Such criterion is for instance
    013 * the number of hard conflict (values that have to be unassigned before a selected
    014 * value can be assigned for the problem to remain consistent).
    015 * <br>
    016 *
    017 * @version CourseTT 1.2 (University Course Timetabling)<br>
    018 *          Copyright (C) 2006 - 2011 Tomáš Müller<br>
    019 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
    020 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
    021 * <br>
    022 *          This library is free software; you can redistribute it and/or modify
    023 *          it under the terms of the GNU Lesser General Public License as
    024 *          published by the Free Software Foundation; either version 3 of the
    025 *          License, or (at your option) any later version. <br>
    026 * <br>
    027 *          This library is distributed in the hope that it will be useful, but
    028 *          WITHOUT ANY WARRANTY; without even the implied warranty of
    029 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    030 *          Lesser General Public License for more details. <br>
    031 * <br>
    032 *          You should have received a copy of the GNU Lesser General Public
    033 *          License along with this library; if not see
    034 *          <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
    035 */
    036public abstract class PlacementSelectionCriterion extends TimetablingCriterion {
    037
    038    public PlacementSelectionCriterion() {
    039        iValueUpdateType = ValueUpdateType.NoUpdate;
    040    }
    041
    042    @Override
    043    public double getWeightDefault(DataProperties config) {
    044        return 0.0;
    045    }
    046
    047    @Override
    048    public void getInfo(Map<String, String> info) {
    049    }
    050
    051    @Override
    052    public void getInfo(Map<String, String> info, Collection<Lecture> variables) {
    053    }
    054
    055}