001package net.sf.cpsolver.coursett.criteria.placement; 002 003import java.util.Set; 004 005import net.sf.cpsolver.coursett.model.Placement; 006 007/** 008 * Number of values (of other variables) that have to be unassigned in order before 009 * this value can be assigned. 010 * <br> 011 * 012 * @version CourseTT 1.2 (University Course Timetabling)<br> 013 * Copyright (C) 2006 - 2011 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 029 * <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>. 030 */ 031public class HardConflicts extends PlacementSelectionCriterion { 032 033 @Override 034 public String getPlacementSelectionWeightName() { 035 return "Placement.NrConflictsWeight"; 036 } 037 038 @Override 039 public double getValue(Placement value, Set<Placement> conflicts) { 040 return (conflicts == null ? 0 : conflicts.size()); 041 } 042 043 @Override 044 public double getPlacementSelectionWeightDefault(int level) { 045 return (level == 0 ? 3.0 : 0.0); 046 } 047 048}