private void match(String facultyName, List <Preference> preferences, Student student)
{
//add student as rejected in the db at first
FacultyRankList rejected = new FacultyRankList()
{
EGN = student.EGN,
ProgrammeName = CONST_REJECTED + ' ' + facultyName,
TotalGrade = 0
};
context.FacultyRankLists.Add(rejected);
context.SaveChanges();
try
{
foreach (Preference preference in preferences)
{
int quota = queryManager.getQuota(preference.ProgrammeName, (bool)student.Gender);
List <FacultyRankList> rankList = queryManager.getRankListData(preference.ProgrammeName, (bool)student.Gender);
double minimalGrade = 0;
double studentCount = rankList.Count;
if (rankList.Count != 0)
{
minimalGrade = rankList.Min(list => list.TotalGrade);
}
if (preference.TotalGrade > minimalGrade &&
studentCount >= quota &&
((quota >= 2 &&
rankList[quota - 2].TotalGrade > minimalGrade) ||
(quota == 1 &&
rankList[quota - 1].TotalGrade > minimalGrade)
))
{
var entries = rankList.Where(entry => entry.TotalGrade == minimalGrade);
foreach (FacultyRankList entry in entries)
{
context.FacultyRankLists.Attach(entry);
context.FacultyRankLists.Remove(entry);
}
context.SaveChanges();
}
if ((preference.TotalGrade > 0 &&
preference.TotalGrade >= minimalGrade) ||
(preference.TotalGrade < minimalGrade &&
studentCount < quota))
{
FacultyRankList entry = new FacultyRankList()
{
EGN = preference.EGN,
ProgrammeName = preference.ProgrammeName,
TotalGrade = preference.TotalGrade
};
context.FacultyRankLists.Add(entry);
context.FacultyRankLists.Attach(rejected);
context.FacultyRankLists.Remove(rejected);
context.SaveChanges();
break;
}
}
}
catch (Exception e)
{
context.FacultyRankLists.Attach(rejected);
context.FacultyRankLists.Remove(rejected);
context.SaveChanges();
throw e;
}
}
