def load_csv_course(app_context):
"""Loads course data from the CSV files."""
logging.info('Initializing datastore from CSV files.')
unit_file = os.path.join(app_context.get_data_home(), 'unit.csv')
lesson_file = os.path.join(app_context.get_data_home(), 'lesson.csv')
# Check files exist.
if (not app_context.fs.isfile(unit_file) or
not app_context.fs.isfile(lesson_file)):
return None, None
unit_stream = app_context.fs.open(unit_file)
lesson_stream = app_context.fs.open(lesson_file)
# Verify CSV file integrity.
units = verify.read_objects_from_csv_stream(
unit_stream, verify.UNITS_HEADER, verify.Unit)
lessons = verify.read_objects_from_csv_stream(
lesson_stream, verify.LESSONS_HEADER, verify.Lesson)
verifier = verify.Verifier()
verifier.verify_unit_fields(units)
verifier.verify_lesson_fields(lessons)
verifier.verify_unit_lesson_relationships(units, lessons)
assert verifier.errors == 0
assert verifier.warnings == 0
# Load data from CSV files into a datastore.
units = verify.read_objects_from_csv_stream(
app_context.fs.open(unit_file), verify.UNITS_HEADER, Unit12,
converter=verify.UNIT_CSV_TO_DB_CONVERTER)
lessons = verify.read_objects_from_csv_stream(
app_context.fs.open(lesson_file), verify.LESSONS_HEADER, Lesson12,
converter=verify.LESSON_CSV_TO_DB_CONVERTER)
return units, lessons
def load_csv_course(app_context):
"""Loads course data from the CSV files."""
logging.info('Initializing datastore from CSV files.')
unit_file = os.path.join(app_context.get_data_home(), 'unit.csv')
lesson_file = os.path.join(app_context.get_data_home(), 'lesson.csv')
# Check files exist.
if (not app_context.fs.isfile(unit_file) or
not app_context.fs.isfile(lesson_file)):
return None, None
unit_stream = app_context.fs.open(unit_file)
lesson_stream = app_context.fs.open(lesson_file)
# Verify CSV file integrity.
units = verify.read_objects_from_csv_stream(
unit_stream, verify.UNITS_HEADER, verify.Unit)
lessons = verify.read_objects_from_csv_stream(
lesson_stream, verify.LESSONS_HEADER, verify.Lesson)
verifier = verify.Verifier()
verifier.verify_unit_fields(units)
verifier.verify_lesson_fields(lessons)
verifier.verify_unit_lesson_relationships(units, lessons)
assert verifier.errors == 0
assert verifier.warnings == 0
# Load data from CSV files into a datastore.
units = verify.read_objects_from_csv_stream(
app_context.fs.open(unit_file), verify.UNITS_HEADER, Unit12,
converter=verify.UNIT_CSV_TO_DB_CONVERTER)
lessons = verify.read_objects_from_csv_stream(
app_context.fs.open(lesson_file), verify.LESSONS_HEADER, Lesson12,
converter=verify.LESSON_CSV_TO_DB_CONVERTER)
return units, lessons
def load_csv_course(app_context):
"""Loads course data from the CSV files."""
logging.info('Initializing datastore from CSV files')
unit_file = os.path.join(app_context.get_data_home(), 'unit.csv')
lesson_file = os.path.join(app_context.get_data_home(), 'lesson.csv')
# Load and validate data from CSV files.
units = verify.read_objects_from_csv_stream(
app_context.fs.open(unit_file), verify.UNITS_HEADER, verify.Unit)
lessons = verify.read_objects_from_csv_stream(
app_context.fs.open(lesson_file), verify.LESSONS_HEADER, verify.Lesson)
verifier = verify.Verifier()
verifier.verify_unit_fields(units)
verifier.verify_lesson_fields(lessons)
verifier.verify_unit_lesson_relationships(units, lessons)
assert verifier.errors == 0
assert verifier.warnings == 0
# Load data from CSV files into a datastore.
new_units = []
new_lessons = []
units = verify.read_objects_from_csv_stream(
app_context.fs.open(unit_file), verify.UNITS_HEADER, Unit)
lessons = verify.read_objects_from_csv_stream(
app_context.fs.open(lesson_file), verify.LESSONS_HEADER, Lesson)
for unit in units:
entity = Unit()
copy_attributes(unit, entity, verify.UNIT_CSV_TO_DB_CONVERTER)
new_units.append(entity)
for lesson in lessons:
entity = Lesson()
copy_attributes(lesson, entity, verify.LESSON_CSV_TO_DB_CONVERTER)
new_lessons.append(entity)
return new_units, new_lessons
def load_csv_course(app_context):
"""Loads course data from the CSV files."""
logging.info('Initializing datastore from CSV files')
unit_file = os.path.join(app_context.get_data_home(), 'unit.csv')
lesson_file = os.path.join(app_context.get_data_home(), 'lesson.csv')
biblio_file = os.path.join(app_context.get_data_home(), 'biblio.csv')
# Load and validate data from CSV files.
units = verify.read_objects_from_csv_stream(app_context.fs.open(unit_file),
verify.UNITS_HEADER,
verify.Unit)
lessons = verify.read_objects_from_csv_stream(
app_context.fs.open(lesson_file), verify.LESSONS_HEADER, verify.Lesson)
references = verify.read_objects_from_csv_stream(
app_context.fs.open(biblio_file), verify.BIBLIO_HEADER,
verify.Reference)
verifier = verify.Verifier()
verifier.verify_unit_fields(units)
verifier.verify_lesson_fields(lessons)
verifier.verify_unit_lesson_relationships(units, lessons)
assert verifier.errors == 0
assert verifier.warnings == 0
# Load data from CSV files into a datastore.
new_units = []
new_lessons = []
new_references = []
units = verify.read_objects_from_csv_stream(app_context.fs.open(unit_file),
verify.UNITS_HEADER, Unit)
lessons = verify.read_objects_from_csv_stream(
app_context.fs.open(lesson_file), verify.LESSONS_HEADER, Lesson)
references = verify.read_objects_from_csv_stream(
app_context.fs.open(biblio_file), verify.BIBLIO_HEADER, Reference)
for unit in units:
entity = Unit()
copy_attributes(unit, entity, verify.UNIT_CSV_TO_DB_CONVERTER)
new_units.append(entity)
for lesson in lessons:
entity = Lesson()
copy_attributes(lesson, entity, verify.LESSON_CSV_TO_DB_CONVERTER)
new_lessons.append(entity)
for reference in references:
entity = Reference()
copy_attributes(reference, entity, verify.BIBLIO_CSV_TO_DB_CONVERTER)
new_references.append(entity)
return new_units, new_lessons, new_references