001 package net.sf.cpsolver.ifs.criteria;
002
003 import java.util.Set;
004
005 import net.sf.cpsolver.ifs.model.Model;
006 import net.sf.cpsolver.ifs.model.Value;
007 import net.sf.cpsolver.ifs.model.Variable;
008 import 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 Tomas Muller<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 */
035 public 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 }