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.Exam;
008 import net.sf.cpsolver.exam.model.ExamModel;
009 import net.sf.cpsolver.exam.model.ExamPlacement;
010 import net.sf.cpsolver.ifs.util.CSVFile;
011 import net.sf.cpsolver.ifs.util.CSVFile.CSVField;
012
013 /**
014 * Export student more than two exams a day conflicts between triplets of exams into a CSV file.
015 * <br><br>
016 * Usage:<br>
017 * <code>
018 * new ExamStudentMoreTwoADay(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 ExamStudentMoreTwoADay {
043 private ExamModel iModel = null;
044
045 /**
046 * Constructor
047 * @param model examination timetabling model
048 */
049 public ExamStudentMoreTwoADay(ExamModel model) {
050 iModel = model;
051 }
052
053 /**
054 * generate report
055 */
056 public CSVFile report() {
057 CSVFile csv = new CSVFile();
058 csv.setHeader(new CSVField[] {
059 new CSVField("Exam 1"),
060 new CSVField("Enrl 1"),
061 new CSVField("Period 1"),
062 new CSVField("Date 1"),
063 new CSVField("Time 1"),
064 new CSVField("Exam 2"),
065 new CSVField("Enrl 2"),
066 new CSVField("Period 2"),
067 new CSVField("Time 2"),
068 new CSVField("Exam 3"),
069 new CSVField("Enrl 3"),
070 new CSVField("Period 3"),
071 new CSVField("Time 3"),
072 new CSVField("More-2-Day"),
073 new CSVField("More-2-Day [%]")
074 });
075 DecimalFormat df = new DecimalFormat("0.0");
076 for (Enumeration e=iModel.variables().elements();e.hasMoreElements();) {
077 Exam ex1 = (Exam)e.nextElement();
078 ExamPlacement p1 = (ExamPlacement)ex1.getAssignment();
079 if (p1==null) continue;
080 for (Enumeration f=iModel.variables().elements();f.hasMoreElements();) {
081 Exam ex2 = (Exam)f.nextElement();
082 if (ex2.equals(ex1)) continue;
083 ExamPlacement p2 = (ExamPlacement)ex2.getAssignment();
084 if (p2==null || p2.getPeriod().getDay()!=p1.getPeriod().getDay() || p2.getPeriod().getIndex()<p1.getPeriod().getIndex()) continue;
085 if (p1.getPeriod().equals(p2.getPeriod()) && ex1.getId()>=ex2.getId()) continue;
086 Vector students = (Vector)ex1.getJointEnrollments().get(ex2);
087 if (students==null || students.isEmpty()) continue;
088 for (Enumeration g=iModel.variables().elements();g.hasMoreElements();) {
089 Exam ex3 = (Exam)g.nextElement();
090 if (ex3.equals(ex2) || ex3.equals(ex1)) continue;
091 ExamPlacement p3 = (ExamPlacement)ex3.getAssignment();
092 if (p3==null || p3.getPeriod().getDay()!=p2.getPeriod().getDay() || p3.getPeriod().getIndex()<p2.getPeriod().getIndex()) continue;
093 if (p1.getPeriod().equals(p3.getPeriod()) && ex1.getId()>=ex3.getId()) continue;
094 if (p2.getPeriod().equals(p3.getPeriod()) && ex2.getId()>=ex3.getId()) continue;
095 int m2d = 0;
096 for (Enumeration h=ex3.getStudents().elements();h.hasMoreElements();)
097 if (students.contains(h.nextElement())) m2d++;
098 if (m2d==0) continue;
099 csv.addLine(new CSVField[] {
100 new CSVField(ex1.getName()),
101 new CSVField(ex1.getStudents().size()),
102 new CSVField(p1.getPeriod().getIndex()+1),
103 new CSVField(p1.getPeriod().getDayStr()),
104 new CSVField(p1.getPeriod().getTimeStr()),
105 new CSVField(ex2.getName()),
106 new CSVField(ex2.getStudents().size()),
107 new CSVField(p2.getPeriod().getIndex()+1),
108 new CSVField(p2.getPeriod().getTimeStr()),
109 new CSVField(ex3.getName()),
110 new CSVField(ex3.getStudents().size()),
111 new CSVField(p3.getPeriod().getIndex()+1),
112 new CSVField(p3.getPeriod().getTimeStr()),
113 new CSVField(m2d),
114 new CSVField(df.format(100.0*m2d/Math.min(Math.min(ex1.getStudents().size(),ex2.getStudents().size()),ex3.getStudents().size())))
115 });
116 }
117 }
118 }
119 return csv;
120 }
121 }