/**
* Enlist
*
* @param studentWI
* @param subject
*/
private void enlist(WriteIn studentWI, String subject) {
// Get the schedule of the student
Schedule sked = (Schedule) schedules.get(studentWI.getStudentNumber());
/* guard to make sure units must not exceed allowed
*/
ISubject temp = studentWI.getSubjectInfo(subject);
int unt = temp.getUnitCredit() + sked.getUnitsObtained();
if (unt > studentWI.getUnitsAllowed()) {
return;
}
List lectures = offering.getLecSections(subject);
// Collections.shuffle(lectures);
rankLectureSections(lectures);
// less slots first?
// Collections.reverse(lectures);
// For each lec section
for (Iterator ite6 = lectures.iterator(); ite6.hasNext(); ) {
Section lab = null;
SectionAssignment sectAss = new SectionAssignment();
Section lecture = (Section) ite6.next();
// Create a classlist of the section if it does
// not exist yet
String clkey = lecture.getSubject().getName() + ":" + lecture.getSectionName();
Classlist cl = (Classlist) classlists.get(clkey);
if (cl == null) {
cl = new Classlist(lecture, null);
}
// proceed to next section if this section full
if (cl.full()) {
continue;
}
// Create a sked node for it
SkedNode lecnode = new SkedNode(lecture);
// temporarily add the lecnode
sked.addSection(lecnode);
// proceed to next lecture section
// since this lecture is in conflict
// already,
// there is no need to process its labs
if (!sked.passed(lecnode)) {
sked.removeLastSectionAdded();
continue;
}
sectAss.setLecture(lecture);
// ok the lec node was added, however, it is not
// a guaranteed slot unless a lab is found
// now we get the lab sections
List labs = offering.getLabSections(lecture.getSubject().getName(), lecture.getSectionName());
boolean labFound = false;
// this lecture got labs!
if (labs.size() > 0) {
// rankLabSections(labs);
// less slots first?
// Collections.reverse(labs);
// try to find a lab
for (Iterator ite7 = labs.iterator(); ite7.hasNext(); ) {
lab = (Section) ite7.next();
// Create a classlist of the section if
// it does not exist yet
clkey = lab.getSubject().getName() + ":" + lab.getSectionName();
cl = (Classlist) classlists.get(clkey);
if (cl == null) {
cl = new Classlist(lecture, lab);
}
// Create a node for the lab
SkedNode labNode = new SkedNode(lab);
// Add it to the sked
sked.addSection(labNode);
// Did it satisfy the constraint?
if (!sked.passed(labNode)) {
// remove this lab section from sked
sked.removeLastSectionAdded();
} else {
if (cl.addStudent(studentWI.getStudentNumber())) {
sectAss.setLab(lab);
sked.addSectionAssignment(sectAss);
classlists.put(clkey, cl);
// We found a lab! great
labFound = true;
break;
} else {
sked.removeLastSectionAdded();
}
}
}
// got one
if (labFound == true) {
break;
} else {
// remove the lecture node
sked.removeLastSectionAdded();
}
} else {
if (cl.addStudent(studentWI.getStudentNumber())) {
sked.addSectionAssignment(sectAss);
classlists.put(clkey, cl);
if (studentWI.getStudentNumber().equals(stdNum)) {
log(2, "\t\t\t\tEnlisted!");
}
} else {
if (studentWI.getStudentNumber().equals(stdNum)) {
log(2, "\t\t\t\tSection is full!");
}
sked.removeLastSectionAdded();
sked.removeLastSectionAdded();
}
break;
}
}
}
/**
* Ranked students
*
* @param subject
* @return
*/
public Map getRankedStudents(String subject) {
log(3, "Obtaining students interested in subject and sorting based on priority.");
Vector students = (Vector) demandMap.get(subject);
Map returnMap = new Hashtable();
Map priorityMap = new Hashtable();
for (Iterator ite1 = students.iterator(); ite1.hasNext(); ) {
WriteIn wri = (WriteIn) ite1.next();
Float priority = new Float(wri.getPriority());
List samePriorityList = (List) priorityMap.get(priority);
if (samePriorityList == null) samePriorityList = new Vector();
samePriorityList.add(wri);
priorityMap.put(priority, samePriorityList);
}
// TODO: sort the students on the same rank based on the number of
// options available
//
for (Iterator ite2 = priorityMap.keySet().iterator(); ite2.hasNext(); ) { // for each rank
Map sameRankMap = new Hashtable();
Float studentRank = (Float) ite2.next();
// logger.info(rank);
List sameRankedStudents = (List) priorityMap.get(studentRank);
for (Iterator ite3 = sameRankedStudents.iterator();
ite3.hasNext(); ) { // for each student on the same rank
WriteIn studentWI = (WriteIn) ite3.next();
// Get the schedule of the student
Schedule sked = (Schedule) schedules.get(studentWI.getStudentNumber());
// Get the lec sections for the subject
List lectures = offering.getLecSections(subject);
// Get the lecture sections to count the number of options
float numOptions = 0;
float totalNumOptions = 0;
Classlist cl;
String clkey;
for (Iterator ite4 = lectures.iterator(); ite4.hasNext(); ) {
totalNumOptions++;
Section lecture = (Section) ite4.next();
// Passed constraints
if (sked.passed(lecture)) {
// Count as option only if section is not full
clkey = lecture.getSubject().getName() + ":" + lecture.getSectionName();
cl = (Classlist) classlists.get(clkey);
if (cl == null) {
cl = new Classlist(lecture, null);
}
// Get the lab if any
List labs = offering.getLabSections(subject, lecture.getSectionName());
if (labs.size() > 0) {
totalNumOptions++;
for (Iterator ite5 = labs.iterator(); ite5.hasNext(); ) {
Section lab = (Section) ite5.next();
if (sked.passed(lab)) {
// Create a classlist of the section if it
// does not exist yet
clkey = lab.getSubject().getName() + ":" + lab.getSectionName();
cl = (Classlist) classlists.get(clkey);
if (cl == null) {
cl = new Classlist(lecture, lab);
}
classlists.put(clkey, cl);
if (!cl.full()) {
numOptions++;
}
}
}
} else {
classlists.put(clkey, cl);
if (!cl.full()) {
numOptions++;
}
}
}
}
float currentLoad = sked.getUnitsObtained();
float allowed = studentWI.getUnitsAllowed();
float percentageLoad = currentLoad / allowed;
float percentageNumOptions = numOptions / totalNumOptions;
ISubject subji = studentWI.getSubjectInfo(subject);
float subjectPriority =
(studentWI.getSubjectPriority(subji) - 1) / studentWI.getSubjects().size();
Float key =
new Float(
percentageNumOptions * 0.0 + percentageLoad * 0.0 + (1 - subjectPriority) * 1.0);
// key is based on the priority of the subject in the writein
List tmpL = (List) sameRankMap.get(key);
if (tmpL == null) {
tmpL = new Vector();
}
studentWI.setOptionCount(numOptions);
tmpL.add(studentWI);
sameRankMap.put(key, tmpL);
}
returnMap.put(studentRank, sameRankMap);
}
return returnMap;
}
