def __store_to_file(self):
file = open(self.__file_name, "w")
grades = Grade_repository.get_all(self)
for grade in grades:
store_to_file = str(grade.assignment_ID) + ";" + str(
grade.student_ID) + ";" + str(grade.numeric_value) + "\n"
file.write(store_to_file)
file.close()
def __load_from_file(self):
try:
file = open(self.__file_name, "r")
line = file.readline().strip()
while line != "":
attributes = line.split(";")
if attributes[2] != "None":
grade = Grade(int(attributes[0]), int(attributes[1]),
int(attributes[2]))
else:
grade = Grade(int(attributes[0]), int(attributes[1]))
Grade_repository.add(self, grade)
line = file.readline().strip()
except IOError as ioerror:
raise RepositoryError(str(ioerror))
finally:
file.close()
def __init__(self, file_name="grades.txt"):
Grade_repository.__init__(self)
self.__file_name = file_name
self.__load_from_file()
def update(self, student_ID, assignment_ID, numeric_value_grade):
Grade_repository.update(self, student_ID, assignment_ID,
numeric_value_grade)
self.__store_to_file()
def remove(self, student_ID, assignment_ID):
Grade_repository.remove(self, student_ID, assignment_ID)
self.__store_to_file()
def add(self, grade):
Grade_repository.add(self, grade)
self.__store_to_file()