    001package org.cpsolver.studentsct.online.expectations;
    002
    003import org.cpsolver.ifs.assignment.Assignment;
    004import org.cpsolver.ifs.util.DataProperties;
    005import org.cpsolver.studentsct.model.Enrollment;
    006import org.cpsolver.studentsct.model.Request;
    007import org.cpsolver.studentsct.model.Section;
    008
    009/**
    010 * Class is over-expected when {@link Section#getPenalty()} is not negative.
    011 *
    012 * @version StudentSct 1.3 (Student Sectioning)<br>
    013 *          Copyright (C) 2014 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 <a
    029 *          href='http://www.gnu.org/licenses'>http://www.gnu.org/licenses</a>.
    030 *
    031 */
    032public class PenaltyNotNegative implements OverExpectedCriterion {
    033
    034    public PenaltyNotNegative(DataProperties config) {
    035    }
    036
    037    @Override
    038    public double getOverExpected(Assignment<Request, Enrollment> assignment, Section section, Request request) {
    039        if (section.getPenalty() < 0 || section.getLimit() <= 0.0)
    040            return 0.0;
    041        int subparts = section.getSubpart().getConfig().getSubparts().size();
    042        return 1.0 / subparts;
    043    }
    044
    045    @Override
    046    public String toString() {
    047        return "not-negative";
    048    }
    049
    050    @Override
    051    public Integer getExpected(int sectionLimit, double expectedSpace) {
    052        if (sectionLimit <= 0.0)
    053            return null;
    054
    055        int expected = (int) Math.round(expectedSpace);
    056        if (expected > 0)
    057            return expected;
    058
    059        return null;
    060    }
    061}