def previous_primary_owners(driver, vin):
"""
Find previous primary owners for the given VIN in a single transaction.
In this example, query the `VehicleRegistration` history table to find all previous primary owners for a VIN.
:type driver: :py:class:`pyqldb.driver.qldb_driver.QldbDriver`
:param driver: An instance of the QldbDriver class.
:type vin: str
:param vin: VIN to find previous primary owners for.
"""
person_ids = driver.execute_lambda(lambda executor: get_document_ids(
executor, Constants.VEHICLE_REGISTRATION_TABLE_NAME, 'VIN', vin))
todays_date = datetime.utcnow() - timedelta(seconds=1)
three_months_ago = todays_date - timedelta(days=90)
query = 'SELECT data.Owners.PrimaryOwner, metadata.version FROM history({}, {}, {}) AS h WHERE h.metadata.id = ?'.\
format(Constants.VEHICLE_REGISTRATION_TABLE_NAME, format_date_time(three_months_ago),
format_date_time(todays_date))
for ids in person_ids:
logger.info(
"Querying the 'VehicleRegistration' table's history using VIN: {}."
.format(vin))
cursor = driver.execute_lambda(
lambda executor: executor.execute_statement(query, ids))
if not (print_result(cursor)) > 0:
logger.info(
'No modification history found within the given time frame for document ID: {}'
.format(ids))
def register_new_person(driver, person):
"""
Register a new person in QLDB if not already registered.
:type driver: :py:class:`pyqldb.driver.qldb_driver.QldbDriver`
:param driver: An instance of the QldbDriver class.
:type person: dict
:param person: The person to register.
:rtype: str
:return: The person ID.
"""
gov_id = person['GovId']
if driver.execute_lambda(
lambda executor: person_already_exists(executor, gov_id)):
logger.info('Person with this GovId already exists.')
result = driver.execute_lambda(lambda executor: get_document_ids(
executor, Constants.PERSON_TABLE_NAME, 'GovId', gov_id))
result = result[0]
else:
result = insert_documents(driver, Constants.PERSON_TABLE_NAME,
[person])
result = result[0]
return result
def get_document_id_by_gov_id(transaction_executor, government_id):
"""
Find a driver's person ID using the given government ID.
:type transaction_executor: :py:class:`pyqldb.execution.executor.Executor`
:param transaction_executor: An Executor object allowing for execution of statements within a transaction.
:type government_id: str
:param government_id: A driver's government ID.
:rtype: list
:return: A list of document IDs.
"""
logger.info(
"Finding secondary owner's person ID using given government ID: {}.".
format(government_id))
return get_document_ids(transaction_executor, Constants.PERSON_TABLE_NAME,
'GovId', government_id)
def register_new_driver(transaction_executor, driver):
"""
Register a new driver in QLDB if not already registered.
:type transaction_executor: :py:class:`pyqldb.execution.executor.Executor`
:param transaction_executor: An Executor object allowing for execution of statements within a transaction.
:type driver: dict
:param driver: The driver's license to register.
"""
gov_id = driver['GovId']
if person_already_exists(transaction_executor, gov_id):
logger.info('Person with this GovId already exists.')
result = next(get_document_ids(transaction_executor, Constants.PERSON_TABLE_NAME, 'GovId', gov_id))
else:
result = insert_documents(transaction_executor, Constants.PERSON_TABLE_NAME, [driver])
result = result[0]
return result
def get_document_id_by_gov_id(driver, government_id):
"""
Find a driver's person ID using the given government ID.
:type driver: :py:class:`pyqldb.driver.qldb_driver.QldbDriver`
:param driver: An instance of the QldbDriver class.
:type government_id: str
:param government_id: A driver's government ID.
:rtype: list
:return: A list of document IDs.
"""
logger.info(
"Finding secondary owner's person ID using given government ID: {}.".
format(government_id))
return driver.execute_lambda(lambda executor: get_document_ids(
executor, Constants.PERSON_TABLE_NAME, 'GovId', government_id))
def find_vehicles_for_owner(transaction_executor, gov_id):
"""
Find vehicles registered under a driver using their government ID.
:type transaction_executor: :py:class:`pyqldb.session.executor.Executor`
:param transaction_executor: An Executor object allowing for execution of statements within a transaction.
:type gov_id: str
:param gov_id: The owner's government ID.
"""
document_ids = get_document_ids(transaction_executor, Constants.PERSON_TABLE_NAME, 'GovId', gov_id)
query = "SELECT Vehicle FROM Vehicle INNER JOIN VehicleRegistration AS r " \
"ON Vehicle.VIN = r.VIN WHERE r.Owners.PrimaryOwner.PersonId = ?"
for ids in document_ids:
cursor = transaction_executor.execute_statement(query, [ids])
logger.info('List of Vehicles for owner with GovId: {}...'.format(gov_id))
print_result(cursor)
def find_vehicles_for_owner(driver, gov_id):
"""
Find vehicles registered under a driver using their government ID.
:type driver: :py:class:`pyqldb.driver.qldb_driver.QldbDriver`
:param driver: An instance of the QldbDriver class.
:type gov_id: str
:param gov_id: The owner's government ID.
"""
document_ids = driver.execute_lambda(lambda executor: get_document_ids(
executor, Constants.PERSON_TABLE_NAME, 'GovId', gov_id))
query = "SELECT Vehicle FROM Vehicle INNER JOIN VehicleRegistration AS r " \
"ON Vehicle.VIN = r.VIN WHERE r.Owners.PrimaryOwner.PersonId = ?"
for ids in document_ids:
cursor = driver.execute_lambda(
lambda executor: executor.execute_statement(query, ids))
logger.info(
'List of Vehicles for owner with GovId: {}...'.format(gov_id))
print_result(cursor)
