001package net.sf.cpsolver.exam.criteria; 002 003import java.util.Map; 004import java.util.Set; 005 006import net.sf.cpsolver.exam.model.Exam; 007import net.sf.cpsolver.exam.model.ExamPlacement; 008import net.sf.cpsolver.exam.model.ExamStudent; 009 010/** 011 * Number of direct student conflicts caused by the fact that a student is 012 * not available. 013 * <br><br> 014 * Direct student conflict weight can be set by problem property 015 * Exams.DirectConflictWeight, or in the input xml file, property 016 * directConflictWeight. 017 * 018 * <br> 019 * 020 * @version ExamTT 1.2 (Examination Timetabling)<br> 021 * Copyright (C) 2008 - 2012 Tomáš Müller<br> 022 * <a href="mailto:muller@unitime.org">muller@unitime.org</a><br> 023 * <a href="http://muller.unitime.org">http://muller.unitime.org</a><br> 024 * <br> 025 * This library is free software; you can redistribute it and/or modify 026 * it under the terms of the GNU Lesser General Public License as 027 * published by the Free Software Foundation; either version 3 of the 028 * License, or (at your option) any later version. <br> 029 * <br> 030 * This library is distributed in the hope that it will be useful, but 031 * WITHOUT ANY WARRANTY; without even the implied warranty of 032 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 033 * Lesser General Public License for more details. <br> 034 * <br> 035 * You should have received a copy of the GNU Lesser General Public 036 * License along with this library; if not see 037 * <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>. 038 */ 039public class StudentNotAvailableConflicts extends StudentDirectConflicts { 040 041 @Override 042 public double getValue(ExamPlacement value, Set<ExamPlacement> conflicts) { 043 Exam exam = value.variable(); 044 int penalty = 0; 045 for (ExamStudent s : exam.getStudents()) { 046 if (!s.isAvailable(value.getPeriod())) 047 penalty++; 048 } 049 return penalty; 050 } 051 052 @Override 053 public String getName() { 054 return "Not Available Conflicts"; 055 } 056 057 @Override 058 public void getInfo(Map<String, String> info) { 059 } 060 061 @Override 062 public String toString() { 063 return (getValue() <= 0.0 ? "" : "NA:" + sDoubleFormat.format(getValue())); 064 } 065 066}