001package org.cpsolver.coursett.criteria.placement; 002 003import java.util.Set; 004 005import org.cpsolver.coursett.model.Lecture; 006import org.cpsolver.coursett.model.Placement; 007import org.cpsolver.ifs.assignment.Assignment; 008 009 010/** 011 * Number of values (of other variables) that have to be unassigned in order before 012 * this value can be assigned. 013 * <br> 014 * 015 * @version CourseTT 1.3 (University Course Timetabling)<br> 016 * Copyright (C) 2006 - 2014 Tomáš Müller<br> 017 * <a href="mailto:muller@unitime.org">muller@unitime.org</a><br> 018 * <a href="http://muller.unitime.org">http://muller.unitime.org</a><br> 019 * <br> 020 * This library is free software; you can redistribute it and/or modify 021 * it under the terms of the GNU Lesser General Public License as 022 * published by the Free Software Foundation; either version 3 of the 023 * License, or (at your option) any later version. <br> 024 * <br> 025 * This library is distributed in the hope that it will be useful, but 026 * WITHOUT ANY WARRANTY; without even the implied warranty of 027 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 028 * Lesser General Public License for more details. <br> 029 * <br> 030 * You should have received a copy of the GNU Lesser General Public 031 * License along with this library; if not see 032 * <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>. 033 */ 034public class HardConflicts extends PlacementSelectionCriterion { 035 036 @Override 037 public String getPlacementSelectionWeightName() { 038 return "Placement.NrConflictsWeight"; 039 } 040 041 @Override 042 public double getValue(Assignment<Lecture, Placement> assignment, Placement value, Set<Placement> conflicts) { 043 return (conflicts == null ? 0 : conflicts.size()); 044 } 045 046 @Override 047 public double getPlacementSelectionWeightDefault(int level) { 048 return (level == 0 ? 3.0 : 0.0); 049 } 050 051}