@Override
public Set<User> getMembers() {
Set<User> users = new HashSet<User>();
Set<Degree> degrees = new HashSet<>();
for (CompetenceCourse competenceCourse : executionCourse.getCompetenceCourses()) {
for (CurricularCourse curricularCourse :
competenceCourse.getAssociatedCurricularCoursesSet()) {
degrees.add(curricularCourse.getDegree());
}
}
// students of any degree sharing the same competence of the given execution course
for (Degree degree : degrees) {
for (Registration registration : degree.getActiveRegistrations()) {
User user = registration.getPerson().getUser();
if (user != null) {
users.add(user);
}
}
}
// students attending the given execution course (most will be in the previous case but some may
// not)
for (Attends attends : executionCourse.getAttendsSet()) {
User user = attends.getRegistration().getPerson().getUser();
if (user != null) {
users.add(user);
}
}
return users;
}