001package org.cpsolver.exam.reports; 002 003import java.util.Comparator; 004 005import org.cpsolver.exam.model.Exam; 006import org.cpsolver.exam.model.ExamRoomPlacement; 007 008 009/** 010 * Compare two rooms by size. Either normal seating size or alternative sating 011 * size is used, based on the given exam (see {@link Exam#hasAltSeating()}. <br> 012 * <br> 013 * 014 * @version ExamTT 1.3 (Examination Timetabling)<br> 015 * Copyright (C) 2008 - 2014 Tomáš Müller<br> 016 * <a href="mailto:muller@unitime.org">muller@unitime.org</a><br> 017 * <a href="http://muller.unitime.org">http://muller.unitime.org</a><br> 018 * <br> 019 * This library is free software; you can redistribute it and/or modify 020 * it under the terms of the GNU Lesser General Public License as 021 * published by the Free Software Foundation; either version 3 of the 022 * License, or (at your option) any later version. <br> 023 * <br> 024 * This library is distributed in the hope that it will be useful, but 025 * WITHOUT ANY WARRANTY; without even the implied warranty of 026 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 027 * Lesser General Public License for more details. <br> 028 * <br> 029 * You should have received a copy of the GNU Lesser General Public 030 * License along with this library; if not see 031 * <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>. 032 */ 033public class ExamRoomComparator implements Comparator<ExamRoomPlacement> { 034 private boolean iAsc; 035 private Exam iExam; 036 037 /** 038 * Constructor 039 * 040 * @param exam 041 * exam for which rooms are to be compared 042 * @param asc room order 043 */ 044 public ExamRoomComparator(Exam exam, boolean asc) { 045 iExam = exam; 046 iAsc = asc; 047 } 048 049 /** 050 * Compare two rooms based on their normal/alternative seating size 051 */ 052 @Override 053 public int compare(ExamRoomPlacement r1, ExamRoomPlacement r2) { 054 int cmp = (iAsc ? 1 : -1) 055 * Double.compare(r1.getSize(iExam.hasAltSeating()), r2.getSize(iExam.hasAltSeating())); 056 if (cmp != 0) 057 return cmp; 058 return r1.getRoom().compareTo(r2.getRoom()); 059 } 060}