void displayEnrollments(const Enrollment& e1, const Enrollment& e2){
cout << "----------------------------------------------" << endl;
e1.display();
cout << (e1.isEnrolled() ? "E" : "Not e") << "nrolled" << endl;
e2.display();
cout << endl<< "There is " << (e1.hasConflict(e2)? "" : "not ") << "a conflict!" << endl;
}
bool Enrollment::hasConflict(const Enrollment &other) const{
bool conflict = false;
if ((isValid() == false || other.isValid() == false)){
conflict = false;
}
else if ((year_ == other.year_) && (semester_ == other.semester_) && (slot_ == other.slot_)){
conflict = true;
}
return conflict;
}
/**
* @brief EnrollmentDao::add Adds a new Enrollment to the SQLite database.
* A new Enrollment object is inserted into enrollment_map. Enrollment_map is pushed back with the new cursus added. Then, three queries are necessary to add a cursus into the SQLite database.
* @param obj Cursus obj.
*/
void EnrollmentDao::add(Enrollment obj){
int id;
if(db.isValid() && db.isOpen()){
QSqlQuery* q = new QSqlQuery();
q->prepare("insert into enrollment(uv_id, semester_id, mark) select U.rowid, S.rowid, :mark from UV U, STUDENT_RECORD S where U.pk_code = :uv_code and S.semester = :semester");
q->bindValue(":mark", QString(MarkNames[obj.getMark()]));
q->bindValue(":uv_code", QString(obj.getUV().getCode().c_str()));
q->bindValue(":semester", QString(obj.getSemester()->toStdString().c_str()));
if(!q->exec()){
std::cout<< "Error while adding Enrollment to database : "<< q->lastError().text().toStdString()<<std::endl;
delete q;
return;
}
id = q->lastInsertId().toInt();
delete q;
QSqlQuery("select lastInsertedId(rowid) from enrollment");
}
enrollment_map.insert(std::pair<Semester*, Enrollment*>(obj.getSemester(), new Enrollment(obj.getUV(), obj.getSemester(), obj.getMark(), id)));
}
void EnrollmentDao::update(Enrollment obj){
Enrollment* enrollment;
try{
enrollment = find(obj);
}
catch(DaoException e){
std::cout<<e.what()<<std::endl;
return;
}
if(db.isValid() && db.isOpen()){
QSqlQuery* q = new QSqlQuery();
q->prepare("update enrollment set mark = :mark where rowid = :id");
q->bindValue(":mark", QString(MarkNames[obj.getMark()]));
q->bindValue(":id", obj.getId());
if(!q->exec()){
std::cout<<"Error while updating Enrollment in database : "<< q->lastError().text().toStdString() <<std::endl;
delete q;
return;
}
enrollment->setMark(obj.getMark());
delete q;
}
}
void EnrollmentDao::deleteObj(Enrollment obj){
std::multimap<Semester*, Enrollment*>::iterator it;
for(it = enrollment_map.begin(); it != enrollment_map.end() && it->second->getId() != obj.getId(); ++it){
}
if(it == enrollment_map.end())
{
throw DaoException("Enrollment not found into the list");
}
if(db.isValid() && db.isOpen()){
QSqlQuery* q = new QSqlQuery();
q->prepare("delete from enrollment where rowid = :id");
q->bindValue(":id", obj.getId());
if(!q->exec()){
std::cout<<"Error while deleting Enrollment in database : "<< q->lastError().text().toStdString() <<std::endl;
delete q;
return;
}
enrollment_map.erase(it);
delete q;
}
}
int main(){
Enrollment* slots;
Enrollment current;
char name[31];
char code[11];
int year;
int semester;
int slot;
int i = 0;
int n;
cout << "Please entere the number of course sections: ";
cin >> n;
cin.ignore(1000, '\n');
slots = new Enrollment[n];
cout << "Please enter the following " << n << " course sections for enrollment:" << endl;
while (i < n){
cout << "Course section " << (i + 1) << ":" << endl
<< "Subject Name: ";
cin.getline(name, 30, '\n');
cout << "Subject Code: ";
cin.getline(code, 10, '\n');
cout << "Year: ";
cin >> year;
cout << "Semester: ";
cin >> semester;
cout << "Slot: ";
cin >> slot;
cin.ignore(1000, '\n');
current.set(name, code, year, semester, slot);
if (current.isValid()){
int c;
if ((c = current.enrol(slots, n)) == 0){
char res;
slots[i] = current;
cout << "Enrolled!" << endl;
i++;
cout << "Continue? (y/n)";
res = cin.get();
if (res != 'y' && res != 'Y'){
i = n;
}
cin.ignore(1000, '\n');
}
else{
cout << "There is a conflict with the following, please change enrollment time: " << endl;
slots[c - 1].display();
}
}
else{
cout << "InValid information entered, please redo: " << endl;
}
}
for (i = 0; i < n; i++){
cout << "------------------------------" << endl;
slots[i].display();
}
// testing withdraw();
slots[0].withdraw();
slots[0].display();
delete[] slots;
return 0;
}