    001package net.sf.cpsolver.ifs.criteria;
    002
    003import java.util.Set;
    004
    005import net.sf.cpsolver.ifs.model.Model;
    006import net.sf.cpsolver.ifs.model.Value;
    007import net.sf.cpsolver.ifs.model.Variable;
    008import net.sf.cpsolver.ifs.util.DataProperties;
    009
    010/**
    011 * Simple Criterion: Sum of {@link Value#toDouble()}. <br>
    012 * <br>
    013 * This criterion only counts a sum of values (see {@link Value#toDouble()}) of the assigned variables.
    014 * It is an alternative to the default {@link Model#getTotalValue()}.
    015 *
    016 * @version IFS 1.2 (Iterative Forward Search)<br>
    017 *          Copyright (C) 2006 - 2011 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 AssignedValue<V extends Variable<V, T>, T extends Value<V, T>> extends AbstractCriterion<V, T>{
    036
    037    @Override
    038    public double getWeightDefault(DataProperties config) {
    039        return 1.0;
    040    }
    041
    042    @Override
    043    public double getValue(T value, Set<T> conflicts) {
    044        double ret = value.toDouble();
    045        if (conflicts != null)
    046            for (T conflict: conflicts)
    047                ret -= conflict.toDouble();
    048        return ret;
    049    }
    050
    051}