def geocode(self):
"""Update latitude, longitude, rating and ZIP in Locations table."""
print('\nGeocoding...')
null_rating_rows = self.get_rows_with_null_rating()
for row in null_rating_rows:
full_address = "{0} {1}, New Orleans, LA".format(
row.street_number, row.address)
result = self.gmaps.geocode(full_address)
if len(result) == 0:
log.info('No geocoding results for: {}'.format(full_address))
# TODO: Need to also note failure so future geocoding scripts
# don't keep trying and failing on the same addresses.
# Possibly update Location's `rating` and/or Cleaned's
# `location_publish` fields.
continue
details = self.process_google_results(result)
try:
with SESSION.begin_nested():
u = update(Location)
u = u.values(details)
u = u.where(Location.document_id == row.document_id)
SESSION.execute(u)
SESSION.flush()
except Exception as error: # TODO: Handle specific errors.
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
def commit_to_database(self, table, output):
"""Commit to database using nested transactions and exceptions."""
try:
# TODO: Is this the correct method for this?
with SESSION.begin_nested():
i = insert(getattr(db, table))
vals = i.values(output)
SESSION.execute(vals) # TODO: What is this?
SESSION.flush()
except Exception as error:
log.debug(error, exc_info=True)
SESSION.rollback()
SESSION.commit() # TODO: Should this be here?
def commit_to_database(self, table, output):
"""Commit to database using nested transactions and exceptions."""
try:
# TODO: Is this the correct method for this?
with SESSION.begin_nested():
i = insert(getattr(db, table))
vals = i.values(output)
SESSION.execute(vals) # TODO: What is this?
SESSION.flush()
except Exception as error:
log.debug(error, exc_info=True)
SESSION.rollback()
SESSION.commit() # TODO: Should this be here?
def check_geocoder_good_rating(self):
"""Check if PostGIS Geocoder rating scored 3 or lower: good."""
SESSION.query(
Location.rating,
Location.location_publish
).filter(
(Location.rating == 'RANGE_INTERPOLATED') |
(Location.rating == 'ROOFTOP')
).update({"location_publish": True})
try:
with SESSION.begin_nested():
SESSION.flush()
except Exception as error:
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
def check_geocoder_bad_rating(self):
"""Check if PostGIS Geocoder rating scored higher than 3: bad."""
SESSION.query(
Location.rating,
Location.location_publish
).filter(
(Location.rating == 'GEOMETRIC_CENTER') |
(Location.rating == 'APPROXIMATE') |
(Location.rating.is_(None))
).update({"location_publish": False})
try:
with SESSION.begin_nested():
SESSION.flush()
except Exception as error:
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
def commit_rows(self, rows):
"""Commit JOIN-ed rows to the cleaned table."""
log.debug('Committing %d rows', len(rows))
for count, row in enumerate(rows):
log.debug("Row %d", count)
try:
with SESSION.begin_nested():
i = insert(Cleaned)
i = i.values(row)
SESSION.execute(i)
SESSION.flush()
except Exception as error:
log.debug('count: %s', count)
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
log.debug('%d rows committed', len(rows))
def commit_rows(self, rows):
"""Commit JOIN-ed rows to the cleaned table."""
log.debug('Committing %d rows', len(rows))
for count, row in enumerate(rows):
log.debug("Row %d", count)
try:
with SESSION.begin_nested():
i = insert(Cleaned)
i = i.values(row)
SESSION.execute(i)
SESSION.flush()
except Exception as error:
log.debug('count: %s', count)
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
log.debug('%d rows committed', len(rows))
def check_west_of_new_orleans(self):
"""Check if geocoded coords are within west border of New Orleans."""
# Long less than -90.140388 is west of New Orleans:
SESSION.query(
Location.longitude,
Location.location_publish
).filter(
Location.longitude < -90.140388
).update({
"location_publish": False
})
try:
with SESSION.begin_nested():
SESSION.flush()
except Exception as error:
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
def check_high_amount(self):
"""Check if sale amount is unreasonably high (>= $20,000,000)."""
# Anything over $20,000,000 wouldn't be impossible, but is rare
SESSION.query(
Detail.amount,
Detail.detail_publish
).filter(
Detail.amount >= 20000000
).update({
"detail_publish": False
})
try:
with SESSION.begin_nested():
SESSION.flush()
except Exception as error:
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
def check_low_amount(self):
"""Check if sale amount is unreasonably low (<= $0)."""
# Not sure about these, so check them all for now to be safe
SESSION.query(
Detail.amount,
Detail.detail_publish
).filter(
Detail.amount <= 0
).update({
"detail_publish": False
})
try:
with SESSION.begin_nested():
SESSION.flush()
except Exception as error:
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
def check_north_of_new_orleans(self):
"""Check if geocoded coords are within north border of New Orleans."""
# Lat less than 29.864543 is north of New Orleans:
SESSION.query(
Location.latitude,
Location.location_publish
).filter(
Location.latitude > 30.181719
).update({
"location_publish": False
})
try:
with SESSION.begin_nested():
SESSION.flush()
except Exception as error:
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
def make_all_locations_publishable(self):
"""
Assume all sales are publishable.
Set location_publish = 1. Then set to 0 if questionable data is found.
"""
# Assume publishable, then check for reasons not to publish.
SESSION.query(
Location.location_publish
).update({
"location_publish": True
})
try:
with SESSION.begin_nested():
SESSION.flush()
except Exception as error:
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
def check_if_no_date(self):
"""Check if sale has a date."""
SESSION.query(
Detail.document_date,
Detail.document_recorded,
Detail.detail_publish
).filter(
(Detail.document_date is None) |
(Detail.document_recorded is None)
).update(
{"detail_publish": False}
)
try:
with SESSION.begin_nested():
SESSION.flush()
except Exception as error:
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
def check_relative_date(self):
"""Check if sale date is >6 months prior to the recorded date."""
# Convert date strings to date format
new_initial_date = datetime.strptime(
self.initial_date, '%Y-%m-%d').date()
new_until_date = datetime.strptime(
self.until_date, '%Y-%m-%d').date()
current_date = new_initial_date
# Evaluate "30 days ago" based on that particular day
while current_date != new_until_date:
# Update date range
old_date = current_date - timedelta(days=180)
previous_date = current_date - timedelta(days=1)
# Copy datetime objects to date strings
old_date_string = old_date.strftime('%Y-%m-%d')
previous_date_string = previous_date.strftime('%Y-%m-%d')
current_date_string = current_date.strftime('%Y-%m-%d')
# For sales recorded on a given day, check if the document
# date is unbelievable (too old or in the future)
try:
with SESSION.begin_nested():
SESSION.query(
Detail.document_recorded,
Detail.document_date,
Detail.detail_publish
).filter(
Detail.document_recorded == current_date_string
).filter(
Detail.document_date < old_date_string
).update({"detail_publish": False})
SESSION.flush()
except Exception as error:
log.exception(error, exc_info=True)
SESSION.rollback()
try:
with SESSION.begin_nested():
SESSION.query(
Detail.document_recorded,
Detail.document_date,
Detail.detail_publish
).filter(
Detail.document_recorded == current_date_string
).filter(
Detail.document_date > previous_date_string
).update({
"detail_publish": False
})
SESSION.flush()
except Exception as error:
log.exception(error, exc_info=True)
SESSION.rollback()
SESSION.commit()
current_date = current_date + timedelta(days=1)