001package org.cpsolver.exam.reports; 002 003 004import java.util.ArrayList; 005import java.util.List; 006 007import org.cpsolver.exam.criteria.StudentBackToBackConflicts; 008import org.cpsolver.exam.model.Exam; 009import org.cpsolver.exam.model.ExamModel; 010import org.cpsolver.exam.model.ExamPeriod; 011import org.cpsolver.exam.model.ExamPlacement; 012import org.cpsolver.exam.model.ExamStudent; 013import org.cpsolver.ifs.assignment.Assignment; 014import org.cpsolver.ifs.util.CSVFile; 015import org.cpsolver.ifs.util.CSVFile.CSVField; 016 017 018/** 019 * Export distribution of number of students by number of meetings per day into 020 * a CSV file. <br> 021 * <br> 022 * Usage: 023 * <pre><code> 024 * new ExamNbrMeetingsPerDay(model).report().save(file); 025 * </code></pre> 026 * <br> 027 * 028 * @version ExamTT 1.3 (Examination Timetabling)<br> 029 * Copyright (C) 2008 - 2014 Tomáš Müller<br> 030 * <a href="mailto:muller@unitime.org">muller@unitime.org</a><br> 031 * <a href="http://muller.unitime.org">http://muller.unitime.org</a><br> 032 * <br> 033 * This library is free software; you can redistribute it and/or modify 034 * it under the terms of the GNU Lesser General Public License as 035 * published by the Free Software Foundation; either version 3 of the 036 * License, or (at your option) any later version. <br> 037 * <br> 038 * This library is distributed in the hope that it will be useful, but 039 * WITHOUT ANY WARRANTY; without even the implied warranty of 040 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 041 * Lesser General Public License for more details. <br> 042 * <br> 043 * You should have received a copy of the GNU Lesser General Public 044 * License along with this library; if not see 045 * <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>. 046 */ 047public class ExamNbrMeetingsPerDay { 048 private ExamModel iModel = null; 049 050 /** 051 * Constructor 052 * 053 * @param model 054 * examination timetabling model 055 */ 056 public ExamNbrMeetingsPerDay(ExamModel model) { 057 iModel = model; 058 } 059 060 /** 061 * generate report 062 * @param assignment current assignment 063 * @return resultant report 064 */ 065 public CSVFile report(Assignment<Exam, ExamPlacement> assignment) { 066 CSVFile csv = new CSVFile(); 067 List<CSVField> header = new ArrayList<CSVField>(); 068 header.add(new CSVField("Date")); 069 header.add(new CSVField("None")); 070 boolean isDayBreakBackToBack = ((StudentBackToBackConflicts)iModel.getCriterion(StudentBackToBackConflicts.class)).isDayBreakBackToBack(); 071 for (int i = 1; i <= 5; i++) 072 header.add(new CSVField(i == 5 ? "5+" : String.valueOf(i))); 073 header.add(new CSVField("Back-To-Back")); 074 csv.setHeader(header); 075 int[] nrExamsTotal = new int[6]; 076 for (int i = 0; i <= 5; i++) 077 nrExamsTotal[i] = 0; 078 int btbTotal = 0; 079 for (int d = 0; d < iModel.getNrDays(); d++) { 080 ExamPeriod period = null; 081 for (ExamPeriod p : iModel.getPeriods()) { 082 if (p.getDay() == d) { 083 period = p; 084 break; 085 } 086 } 087 int[] nrExams = new int[6]; 088 for (int i = 0; i <= 5; i++) 089 nrExams[i] = 0; 090 int btb = 0; 091 for (ExamStudent student : iModel.getStudents()) { 092 int ex = student.getExamsADay(assignment, d).size(); 093 nrExams[ex <= 5 ? ex : 5]++; 094 ExamPeriod p = period; 095 while (p.next() != null && (isDayBreakBackToBack ? p : p.next()).getDay() == d) { 096 btb += student.getExams(assignment, p).size() * student.getExams(assignment, p.next()).size(); 097 p = p.next(); 098 } 099 } 100 List<CSVField> line = new ArrayList<CSVField>(); 101 line.add(new CSVField(period.getDayStr())); 102 for (int i = 0; i <= 5; i++) { 103 line.add(new CSVField(nrExams[i])); 104 nrExamsTotal[i] += nrExams[i]; 105 } 106 line.add(new CSVField(btb)); 107 btbTotal += btb; 108 csv.addLine(line); 109 } 110 List<CSVField> line = new ArrayList<CSVField>(); 111 line.add(new CSVField("Total")); 112 for (int i = 0; i <= 5; i++) 113 line.add(new CSVField(nrExamsTotal[i])); 114 line.add(new CSVField(btbTotal)); 115 csv.addLine(line); 116 return csv; 117 } 118}