    001package net.sf.cpsolver.coursett.criteria.placement;
    002
    003import java.util.Set;
    004
    005import net.sf.cpsolver.coursett.model.Placement;
    006
    007/**
    008 * Number of values (of other variables) that have to be unassigned in order before
    009 * this value can be assigned.
    010 * <br>
    011 *
    012 * @version CourseTT 1.2 (University Course Timetabling)<br>
    013 *          Copyright (C) 2006 - 2011 Tomáš Müller<br>
    014 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
    015 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
    016 * <br>
    017 *          This library is free software; you can redistribute it and/or modify
    018 *          it under the terms of the GNU Lesser General Public License as
    019 *          published by the Free Software Foundation; either version 3 of the
    020 *          License, or (at your option) any later version. <br>
    021 * <br>
    022 *          This library is distributed in the hope that it will be useful, but
    023 *          WITHOUT ANY WARRANTY; without even the implied warranty of
    024 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    025 *          Lesser General Public License for more details. <br>
    026 * <br>
    027 *          You should have received a copy of the GNU Lesser General Public
    028 *          License along with this library; if not see
    029 *          <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
    030 */
    031public class HardConflicts extends PlacementSelectionCriterion {
    032
    033    @Override
    034    public String getPlacementSelectionWeightName() {
    035        return "Placement.NrConflictsWeight";
    036    }
    037
    038    @Override
    039    public double getValue(Placement value, Set<Placement> conflicts) {
    040        return (conflicts == null ? 0 : conflicts.size());
    041    }
    042
    043    @Override
    044    public double getPlacementSelectionWeightDefault(int level) {
    045        return (level == 0 ? 3.0 : 0.0);
    046    }
    047
    048}