public Instructor create(Instructor instructor) {
instructorVerifier.verifyOnCreate(instructor);
Long locationId = commonDao.provideCourseLocation(instructor.getOffice());
instructorDao.create(instructor, locationId);
createOfficeHours(instructor);
return instructorDao.getById(instructor.getId());
}
public Instructor update(Instructor instructor) {
instructorVerifier.verifyOnUpdate(instructor);
Long locationId = commonDao.provideCourseLocation(instructor.getOffice());
instructorDao.update(instructor, locationId);
commonDao.deleteAllOfficeHoursForInstructor(instructor.getId());
createOfficeHours(instructor);
return instructorDao.getById(instructor.getId());
}
public List<Instructor> getAll() {
List<Instructor> instructors = instructorDao.getAll();
if (instructors.size() == 0) {
logger.info("There were no entries in Instructor table");
}
return instructors;
}
public Instructor getById(Long id) {
Instructor instructor = instructorDao.getById(id);
if (instructor == null) {
logger.warn("The instructor with such id wasn't found");
throw new NoSuchInstructorException("The instructor with such id wasn't found");
}
return instructor;
}
public Instructor getInstructorByCourse(Course course) {
courseVerifier.verifyCourseExists(course);
Instructor instructor = instructorDao.getInstructorByCourse(course.getId());
if (instructor == null) {
logger.error("The course doesn't have an instructor. This shouldn't have happened");
throw new GeneralException(
"The course doesn't have an instructor. This shouldn't have happened");
}
return instructor;
}
public void delete(Instructor instructor) {
instructorVerifier.verifyOnDelete(instructor);
commonDao.deleteAllOfficeHoursForInstructor(instructor.getId());
instructorDao.delete(instructor.getId());
}