001 package net.sf.cpsolver.exam.reports;
002
003 import java.util.Comparator;
004
005 import net.sf.cpsolver.exam.model.Exam;
006 import net.sf.cpsolver.exam.model.ExamRoomPlacement;
007
008 /**
009 * Compare two rooms by size. Either normal seating size or alternative sating
010 * size is used, based on the given exam (see {@link Exam#hasAltSeating()}. <br>
011 * <br>
012 *
013 * @version ExamTT 1.2 (Examination Timetabling)<br>
014 * Copyright (C) 2008 - 2010 Tomas Muller<br>
015 * <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
016 * <a href="http://muller.unitime.org">http://muller.unitime.org</a><br>
017 * <br>
018 * This library is free software; you can redistribute it and/or modify
019 * it under the terms of the GNU Lesser General Public License as
020 * published by the Free Software Foundation; either version 3 of the
021 * License, or (at your option) any later version. <br>
022 * <br>
023 * This library is distributed in the hope that it will be useful, but
024 * WITHOUT ANY WARRANTY; without even the implied warranty of
025 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
026 * Lesser General Public License for more details. <br>
027 * <br>
028 * You should have received a copy of the GNU Lesser General Public
029 * License along with this library; if not see
030 * <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>.
031 */
032 public class ExamRoomComparator implements Comparator<ExamRoomPlacement> {
033 private boolean iAsc;
034 private Exam iExam;
035
036 /**
037 * Constructor
038 *
039 * @param exam
040 * exam for which rooms are to be compared
041 */
042 public ExamRoomComparator(Exam exam, boolean asc) {
043 iExam = exam;
044 iAsc = asc;
045 }
046
047 /**
048 * Compare two rooms based on their normal/alternative seating size
049 */
050 @Override
051 public int compare(ExamRoomPlacement r1, ExamRoomPlacement r2) {
052 int cmp = (iAsc ? 1 : -1)
053 * Double.compare(r1.getSize(iExam.hasAltSeating()), r2.getSize(iExam.hasAltSeating()));
054 if (cmp != 0)
055 return cmp;
056 return r1.getRoom().compareTo(r2.getRoom());
057 }
058 }