@Override
public boolean approveElective(int[] electiveIds) {
try {
for (int id : electiveIds) {
Elective elective = entityManager.find(Elective.class, id);
if (elective == null) {
return false;
}
elective.setProposed("1");
entityManager.persist(elective);
}
} catch (EntityExistsException e) {
e.printStackTrace();
entityManager.getTransaction().rollback();
return false;
} catch (IllegalArgumentException e) {
e.printStackTrace();
entityManager.getTransaction().rollback();
return false;
} catch (TransactionRequiredException e) {
e.printStackTrace();
entityManager.getTransaction().rollback();
return false;
}
return true;
}
@Override
public boolean setTaughtElectives(int[] electiveId) {
// entityManager.getTransaction().begin();
for (int i : electiveId) {
Elective ele = entityManager.find(Elective.class, i);
ele.setTaught((short) 1);
try {
entityManager.persist(ele);
} catch (EntityExistsException e) {
e.printStackTrace();
return false;
} catch (IllegalArgumentException e) {
e.printStackTrace();
return false;
} catch (TransactionRequiredException e) {
e.printStackTrace();
return false;
}
}
// try {
// entityManager.getTransaction().commit();
// } catch (RollbackException e) {
// e.printStackTrace();
// return false;
// }
return true;
}
@Override
public boolean isTaught(int electiveId) {
try {
Elective elective = entityManager.find(Elective.class, electiveId);
return (elective != null && elective.getTaught() != null && elective.getTaught() == 1)
? true
: false;
} catch (IllegalArgumentException e) {
e.printStackTrace();
return false;
}
}
@Override
public boolean assignStudentElectives(Collection<StudentElectiveDTO> studentElective) {
for (StudentElectiveDTO studentElectiveDTO : studentElective) {
Student student = entityManager.find(Student.class, studentElectiveDTO.getCPR());
Elective elective = entityManager.find(Elective.class, studentElectiveDTO.getElective_id());
student.addElective(elective);
elective.addStudent(student);
entityManager.persist(elective);
entityManager.persist(student);
}
return true;
}
// //Returns all the electives proposed by students and teachears!
// @Override
// public Collection<ElectiveDTO> getProposedElectives() {
// ArrayList< ElectiveDTO> electiveDTOs = new ArrayList<>();
// Query query = entityManager.createNamedQuery("Elective.findAll");
// List<Elective> electives = query.getResultList();
// for (Elective e : electives) {
// if (e.getProposed().equals("0")) {
// electiveDTOs.add(new ElectiveDTO(e.getElectiveId(), e.getTitle(),
// e.getDescription(), e.getCreationDate(), e.getProposed()));
// }
// }
// return electiveDTOs;
// }
// Returns electives that has been approved by the head of program to go for the first round
@Override
public Collection<ElectiveFirstDTO> getFirstRndElectives() {
ArrayList<ElectiveFirstDTO> electiveDTOs = new ArrayList<>();
Query query = entityManager.createNamedQuery("Elective.findByProposed");
Query q1, q2;
query.setParameter("proposed", "1");
List<Elective> electives = query.getResultList();
int firstPriorityCount;
int secondPriorityCount;
for (Elective e : electives) {
if (e.getPool() == null) {
q1 = entityManager.createNamedQuery("FirstRoundVote.count_priority1");
q1.setParameter("elective", e);
firstPriorityCount = Integer.parseInt(q1.getSingleResult().toString());
q2 = entityManager.createNamedQuery("FirstRoundVote.count_priority2");
q2.setParameter("elective", e);
secondPriorityCount = Integer.parseInt(q2.getSingleResult().toString());
electiveDTOs.add(
new ElectiveFirstDTO(
e.getElectiveId(),
e.getTitle(),
e.getDescription(),
e.getCreationDate(),
e.getProposed(),
firstPriorityCount,
secondPriorityCount));
}
}
return electiveDTOs;
}
@Override
public Collection<ElectiveSecondDTO> getSecondRndElectivesB() {
ArrayList<ElectiveSecondDTO> electiveDTOsB = new ArrayList<>();
Query query = entityManager.createNamedQuery("Elective.findByPool");
query.setParameter("pool", "b");
List<Elective> electives = query.getResultList();
for (Elective e : electives) {
electiveDTOsB.add(
new ElectiveSecondDTO(
e.getElectiveId(),
e.getTitle(),
e.getDescription(),
e.getCreationDate(),
e.getProposed(),
e.getPool()));
}
return electiveDTOsB;
}
