001package org.cpsolver.instructor.criteria;
002
003import java.util.Set;
004
005import org.cpsolver.ifs.assignment.Assignment;
006import org.cpsolver.ifs.util.DataProperties;
007import org.cpsolver.instructor.model.Instructor;
008import org.cpsolver.instructor.model.TeachingAssignment;
009import org.cpsolver.instructor.model.TeachingRequest;
010
011/**
012 * Time Preferences. This criterion counts how well are the time preferences that are set on an {@link Instructor} met
013 * (counting {@link TeachingAssignment#getTimePreference()}).
014 * 
015 * @author  Tomáš Müller
016 * @version IFS 1.3 (Instructor Sectioning)<br>
017 *          Copyright (C) 2016 Tomáš Müller<br>
018 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
019 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
020 * <br>
021 *          This library is free software; you can redistribute it and/or modify
022 *          it under the terms of the GNU Lesser General Public License as
023 *          published by the Free Software Foundation; either version 3 of the
024 *          License, or (at your option) any later version. <br>
025 * <br>
026 *          This library is distributed in the hope that it will be useful, but
027 *          WITHOUT ANY WARRANTY; without even the implied warranty of
028 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
029 *          Lesser General Public License for more details. <br>
030 * <br>
031 *          You should have received a copy of the GNU Lesser General Public
032 *          License along with this library; if not see
033 *          <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
034 */
035public class TimePreferences extends InstructorSchedulingCriterion {
036    @Override
037    public double getWeightDefault(DataProperties config) {
038        return 1.0;
039    }
040
041    @Override
042    public double getValue(Assignment<TeachingRequest.Variable, TeachingAssignment> assignment, TeachingAssignment value, Set<TeachingAssignment> conflicts) {
043        return value.getTimePreference();
044    }
045
046    @Override
047    public String getAbbreviation() {
048        return "TimePref";
049    }
050}