001 package net.sf.cpsolver.exam.reports;
002
003 import java.text.DecimalFormat;
004 import java.util.Enumeration;
005 import java.util.Vector;
006
007 import net.sf.cpsolver.exam.model.ExamModel;
008 import net.sf.cpsolver.exam.model.ExamPeriod;
009 import net.sf.cpsolver.exam.model.ExamStudent;
010 import net.sf.cpsolver.ifs.util.CSVFile;
011 import net.sf.cpsolver.ifs.util.CSVFile.CSVField;
012
013 /**
014 * Export distribution of number of students by number of meetings per day into a CSV file.
015 * <br><br>
016 * Usage:<br>
017 * <code>
018 * new ExamNbrMeetingsPerDay(model).report().save(file);
019 * </code>
020 * <br><br>
021 *
022 * @version
023 * ExamTT 1.1 (Examination Timetabling)<br>
024 * Copyright (C) 2008 Tomáš Müller<br>
025 * <a href="mailto:muller@unitime.org">muller@unitime.org</a><br>
026 * Lazenska 391, 76314 Zlin, Czech Republic<br>
027 * <br>
028 * This library is free software; you can redistribute it and/or
029 * modify it under the terms of the GNU Lesser General Public
030 * License as published by the Free Software Foundation; either
031 * version 2.1 of the License, or (at your option) any later version.
032 * <br><br>
033 * This library is distributed in the hope that it will be useful,
034 * but WITHOUT ANY WARRANTY; without even the implied warranty of
035 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
036 * Lesser General Public License for more details.
037 * <br><br>
038 * You should have received a copy of the GNU Lesser General Public
039 * License along with this library; if not, write to the Free Software
040 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
041 */
042 public class ExamNbrMeetingsPerDay {
043 private ExamModel iModel = null;
044
045 /**
046 * Constructor
047 * @param model examination timetabling model
048 */
049 public ExamNbrMeetingsPerDay(ExamModel model) {
050 iModel = model;
051 }
052
053 /**
054 * generate report
055 */
056 public CSVFile report() {
057 CSVFile csv = new CSVFile();
058 Vector header = new Vector();
059 header.add(new CSVField("Date"));
060 header.add(new CSVField("None"));
061 for (int i=1;i<=5;i++)
062 header.add(new CSVField(i==5?"5+":String.valueOf(i)));
063 header.add(new CSVField("Back-To-Back"));
064 csv.setHeader(header);
065 DecimalFormat df = new DecimalFormat("0.0");
066 int[] nrExamsTotal = new int[6];
067 for (int i=0;i<=5;i++) nrExamsTotal[i]=0;
068 int btbTotal = 0;
069 for (int d=0;d<iModel.getNrDays();d++) {
070 ExamPeriod period = null;
071 for (Enumeration e=iModel.getPeriods().elements();e.hasMoreElements();) {
072 period = (ExamPeriod)e.nextElement();
073 if (period.getDay()==d) break;
074 }
075 int[] nrExams = new int[6];
076 for (int i=0;i<=5;i++) nrExams[i]=0;
077 int btb = 0;
078 for (Enumeration f=iModel.getStudents().elements();f.hasMoreElements();) {
079 ExamStudent student = (ExamStudent)f.nextElement();
080 int ex = student.getExamsADay(d).size();
081 nrExams[ex<=5?ex:5]++;
082 ExamPeriod p = period;
083 while (p.next()!=null && (iModel.isDayBreakBackToBack()?p:p.next()).getDay()==d) {
084 btb+=student.getExams(p).size()*student.getExams(p.next()).size();
085 p = p.next();
086 }
087 }
088 Vector line = new Vector();
089 line.add(new CSVField(period.getDayStr()));
090 for (int i=0;i<=5;i++) {
091 line.add(new CSVField(nrExams[i]));
092 nrExamsTotal[i]+=nrExams[i];
093 }
094 line.add(new CSVField(btb));
095 btbTotal+=btb;
096 csv.addLine(line);
097 }
098 Vector line = new Vector();
099 line.add(new CSVField("Total"));
100 for (int i=0;i<=5;i++)
101 line.add(new CSVField(nrExamsTotal[i]));
102 line.add(new CSVField(btbTotal));
103 csv.addLine(line);
104 return csv;
105 }
106 }