public void start()
{
List <Student> students = new List <Student>();
var getFacultyNames = (from faculty in context.Faculties
select faculty.FacultyName).Distinct();
List <String> facultyNames = getFacultyNames.ToList();
List <String> studentEGNs;
//if we try to rate for a second time we should clear the rejected students and
//those who did not enroll
var entriesToDelete = from student in context.Students
from entry in context.FacultyRankLists
where entry.EGN == student.EGN
where student.IsEnrolled == false || (entry.ProgrammeName.StartsWith(CONST_REJECTED + " "))
select entry;
foreach (FacultyRankList entry in entriesToDelete)
{
context.FacultyRankLists.Attach(entry);
context.FacultyRankLists.Remove(entry);
}
context.SaveChanges();
//iterate through every faculty
foreach (String facultyName in facultyNames)
{
var getStudentsEGNQuery = (from student in context.Students
from preference in context.Preferences
from faculty in context.Faculties
where student.IsEnrolled == false
where faculty.FacultyName == facultyName &&
preference.ProgrammeName == faculty.ProgrammeName &&
preference.EGN == student.EGN
select student.EGN).Distinct();
var getApprovedStudentsEGNQuery = (from entry in context.FacultyRankLists
from faculty in context.Faculties
where faculty.FacultyName == facultyName
where entry.ProgrammeName == faculty.ProgrammeName || (entry.ProgrammeName.Equals(CONST_REJECTED + " " + faculty.FacultyName))
select entry.EGN).Distinct();
int count;
studentEGNs = getStudentsEGNQuery.ToList();
//this while cycle is used to match any remaining students rejected
//in previous iterations
do
{
count = 0;
//iterate through every student with a preference in this faculty
foreach (String EGN in studentEGNs)
{
Student student;
student = queryManager.getStudent(EGN);
//TODO: This row is for debugging only
List <String> lst = getApprovedStudentsEGNQuery.ToList();
//if the student is already approved for a programme, skip him/her
if (!getApprovedStudentsEGNQuery.Contains(EGN))
{
serve(facultyName, student);
count++;
}
}
}while (count > 0);
}
}
