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}