def currency_coefficient(**kwargs):
""" Assigns a currency coefficient to each feature. The larger the
coefficient, the greater the need for updating the object. """
# get current data
features = current_data(**kwargs)
# find the temporal boundary of the specified group of OSM features
ts_boundary = time_boundary(**kwargs)
for feature in features:
# the result is the timestamp difference in days
result = (ts_boundary - convert_timestamp(feature.osm_timestamp)).days
# save results to the DB
save_result(kwargs['job_op_id'], feature.osm_id, result)
def currency_revision_needed(**kwargs):
""" Marks features in need of revision. """
# get current data
features = current_data(**kwargs)
# find the temporal boundary of the specified group of OSM features
ts_boundary = time_boundary(**kwargs)
for feature in features:
# revision is not needed yet
if convert_timestamp(feature.osm_timestamp) >= ts_boundary:
result = 0
# revision is needed
else:
result = 1
# save results to the DB
save_result(kwargs['job_op_id'], feature.osm_id, result)