    001package org.cpsolver.coursett.criteria.placement;
    002
    003import java.util.Collection;
    004import java.util.Map;
    005
    006import org.cpsolver.coursett.criteria.TimetablingCriterion;
    007import org.cpsolver.coursett.model.Lecture;
    008import org.cpsolver.coursett.model.Placement;
    009import org.cpsolver.ifs.assignment.Assignment;
    010import org.cpsolver.ifs.util.DataProperties;
    011
    012
    013/**
    014 * Abstract class for all criteria that are to be used only in the placement selection
    015 * (do not have any impact on the overall solution value). Such criterion is for instance
    016 * the number of hard conflict (values that have to be unassigned before a selected
    017 * value can be assigned for the problem to remain consistent).
    018 * <br>
    019 *
    020 * @author  Tomáš Müller
    021 * @version CourseTT 1.3 (University Course Timetabling)<br>
    022 *          Copyright (C) 2006 - 2014 Tomáš Müller<br>
    023 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
    024 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
    025 * <br>
    026 *          This library is free software; you can redistribute it and/or modify
    027 *          it under the terms of the GNU Lesser General Public License as
    028 *          published by the Free Software Foundation; either version 3 of the
    029 *          License, or (at your option) any later version. <br>
    030 * <br>
    031 *          This library is distributed in the hope that it will be useful, but
    032 *          WITHOUT ANY WARRANTY; without even the implied warranty of
    033 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    034 *          Lesser General Public License for more details. <br>
    035 * <br>
    036 *          You should have received a copy of the GNU Lesser General Public
    037 *          License along with this library; if not see
    038 *          <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
    039 */
    040public abstract class PlacementSelectionCriterion extends TimetablingCriterion {
    041
    042    public PlacementSelectionCriterion() {
    043        setValueUpdateType(ValueUpdateType.NoUpdate);
    044    }
    045
    046    @Override
    047    public double getWeightDefault(DataProperties config) {
    048        return 0.0;
    049    }
    050
    051    @Override
    052    public void getInfo(Assignment<Lecture, Placement> assignment, Map<String, String> info) {
    053    }
    054
    055    @Override
    056    public void getInfo(Assignment<Lecture, Placement> assignment, Map<String, String> info, Collection<Lecture> variables) {
    057    }
    058
    059}