    001package org.cpsolver.instructor.criteria;
    002
    003import java.util.Collection;
    004import java.util.Map;
    005import java.util.Set;
    006
    007import org.cpsolver.ifs.assignment.Assignment;
    008import org.cpsolver.ifs.util.DataProperties;
    009import org.cpsolver.instructor.model.Instructor;
    010import org.cpsolver.instructor.model.Section;
    011import org.cpsolver.instructor.model.TeachingAssignment;
    012import org.cpsolver.instructor.model.TeachingRequest;
    013
    014/**
    015 * Time overlaps. This criterion counts slots during which an instructor has to teach (or attend) two things that are overlapping in time
    016 * (using {@link Instructor#share(TeachingRequest)}). The time overlaps must be allowed in this case (see {@link Section#isAllowOverlap()}).
    017 *
    018 * @version IFS 1.3 (Instructor Sectioning)<br>
    019 *          Copyright (C) 2016 Tomáš Müller<br>
    020 *          <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
    021 *          <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
    022 * <br>
    023 *          This library is free software; you can redistribute it and/or modify
    024 *          it under the terms of the GNU Lesser General Public License as
    025 *          published by the Free Software Foundation; either version 3 of the
    026 *          License, or (at your option) any later version. <br>
    027 * <br>
    028 *          This library is distributed in the hope that it will be useful, but
    029 *          WITHOUT ANY WARRANTY; without even the implied warranty of
    030 *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    031 *          Lesser General Public License for more details. <br>
    032 * <br>
    033 *          You should have received a copy of the GNU Lesser General Public
    034 *          License along with this library; if not see
    035 *          <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
    036 */
    037public class TimeOverlaps extends InstructorSchedulingCriterion {
    038
    039    public TimeOverlaps() {
    040        setValueUpdateType(ValueUpdateType.NoUpdate);
    041    }
    042
    043    @Override
    044    public double getWeightDefault(DataProperties config) {
    045        return 1000.0;
    046    }
    047
    048    @Override
    049    public double getValue(Assignment<TeachingRequest.Variable, TeachingAssignment> assignment, TeachingAssignment value, Set<TeachingAssignment> conflicts) {
    050        return value.getInstructor().share(assignment, value);
    051    }
    052
    053    @Override
    054    public double getValue(Assignment<TeachingRequest.Variable, TeachingAssignment> assignment, Collection<TeachingRequest.Variable> variables) {
    055        double value = 0.0;
    056        for (Instructor instructor: getAssignedInstructors(assignment, variables)) {
    057            value += instructor.getContext(assignment).countTimeOverlaps();
    058        }
    059        return value;
    060    }
    061
    062    @Override
    063    public String getAbbreviation() {
    064        return "Overlaps";
    065    }
    066
    067    @Override
    068    public void getInfo(Assignment<TeachingRequest.Variable, TeachingAssignment> assignment, Map<String, String> info) {
    069        double val = getValue(assignment);
    070        if (val != 0)
    071            info.put(getName(), sDoubleFormat.format(val / 12.0) + " h");
    072    }
    073
    074    @Override
    075    public void getInfo(Assignment<TeachingRequest.Variable, TeachingAssignment> assignment, Map<String, String> info, Collection<TeachingRequest.Variable> variables) {
    076        double val = getValue(assignment, variables);
    077        if (val != 0)
    078            info.put(getName(), sDoubleFormat.format(val / 12.0) + " h");
    079    }
    080}