public static void removeTeacherById(int teacherId) throws DAOException {
log.info("Remove teacher by teacherId = " + teacherId);
TeacherDao teacherDao = new TeacherDao();
try {
log.trace("Remove teacher with teacherId = " + teacherId);
teacherDao.removeTeacherById(teacherId);
log.trace("Teacher was removed");
} catch (DAOException e) {
log.error("Cannot remove teacher", e);
throw new DAOException("Cannot remove teacher", e);
}
}
public static List<Teacher> getAllTeachers() throws DAOException {
TeacherDao teacherDao = new TeacherDao();
List<Teacher> teachers = new LinkedList<Teacher>();
log.info("Getting all teachers");
try {
log.trace("Find teachers");
teachers = teacherDao.getAllTeachers();
log.trace("Teachers were gotten");
} catch (DAOException e) {
log.error("Cannot get teachers", e);
throw new DAOException("Cannot get teachers", e);
}
log.trace("Returning teachers");
return teachers;
}
public static List<Teacher> getTeachersByName(String teacherName) throws DAOException {
log.info("Getting teachers by teacherName = " + teacherName);
TeacherDao teacherDao = new TeacherDao();
List<Teacher> teachers = new LinkedList<Teacher>();
try {
log.trace("Get teachers with teacherName = " + teacherName);
teachers = teacherDao.getTeachersByName(teacherName);
log.trace("Teachers were gotten");
} catch (DAOException e) {
log.error("Cannot get teachers", e);
throw new DAOException("Cannot get teachers", e);
}
log.trace("Returning teachers");
return teachers;
}
public static Teacher getTeacherById(int teacherId) throws DAOException {
log.info("Getting teacher by teacherId = " + teacherId);
TeacherDao teacherDao = new TeacherDao();
Teacher teacher = null;
try {
log.trace("Get teacher with teacherId = " + teacherId);
teacher = teacherDao.getTeacherById(teacherId);
log.trace("Teacher was gotten");
} catch (DAOException e) {
log.error("Cannot get Teacher", e);
throw new DAOException("Cannot get teacher", e);
}
log.trace("Returning teacher");
return teacher;
}
public static Teacher createTeacher(String teacherName) throws DAOException {
TeacherDao teacherDao = new TeacherDao();
log.info("Creating teacher with teacherName = " + teacherName);
Teacher teacher = null;
try {
log.trace("Create teacher");
teacher = teacherDao.createTeacher(teacherName);
log.trace("Teacher was created");
} catch (DAOException e) {
log.error("Cannot create teacher", e);
throw new DAOException("Cannot create teacher", e);
}
log.trace("Returning teacher");
return teacher;
}
public static void updateTeacher(int teacherId, String newTeacherName) throws DAOException {
log.info(
"Updating teacher with teacherId = "
+ teacherId
+ " by new teacherName = "
+ newTeacherName);
TeacherDao teacherDao = new TeacherDao();
try {
log.trace("Update teacher");
teacherDao.updateTeacher(teacherId, newTeacherName);
log.trace("Teacher was updated");
} catch (DAOException e) {
log.error("Cannot update teacher", e);
throw new DAOException("Cannot update teacher", e);
}
}