class SnowEventDataAccess(DataAccess):
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.da_base = DataAccessBase(model.SnowEvent, SnowEventInfo, **kwargs)
def list(self):
"""
:rtype: list[SnowEventInfo]
"""
return self.da_base.list()
def list_by_year(self, years):
"""
:type years: list[int]
:rtype: list[SpecialEventInfo]
"""
results = []
for year in years:
res = self.da_base.search_date_range(
('start_time', datetime.datetime(int(year), 1, 1, 0, 0, 0)),
('end_time', datetime.datetime(int(year), 12, 31, 11, 59, 59)))
if res:
results.extend(res)
return results
def years(self):
"""
:rtype: list[int]:
"""
ys = []
for snei in self.da_base.list(as_model=True):
y = snei.start_time.year
if y not in ys:
ys.append(y)
return sorted(ys)
def get_by_id(self, id):
"""
:type id: int
:rtype: SnowEventInfo
"""
return self.da_base.get_data_by_id(id)
def get_by_name(self, route_name):
"""
:type route_name: str
:rtype: SnowEventInfo
"""
return self.da_base.get_data_by_name(route_name)
def insert(self, r, **kwargs):
"""
:type r: SnowEventInfo
:rtype: model.SnowEvent
"""
return self.da_base.insert(r, **kwargs)
class TravelTimeDataAccess(DataAccess):
def __init__(self, year, **kwargs):
super().__init__(**kwargs)
self.da_base = DataAccessBase(model_yearly.get_tt_table(year), TravelTimeInfo,
**kwargs)
def list(self, **kwargs):
"""
:rtype: list[TravelTimeInfo]
"""
return self.da_base.list(**kwargs)
def list_by_generator(self, **kwargs):
"""
:rtype: list[TravelTimeInfo]
"""
return self.da_base.list_as_generator(**kwargs)
def list_with_deleted_route(self, **kwargs):
"""
:rtype: list[TravelTimeInfo]
"""
res = []
as_model = kwargs.get('as_model', False)
sess = self.da_base.session
dbModel = self.da_base.dbModel
ex = sess.query(model.TTRoute).filter(dbModel.route_id == model.TTRoute.id)
if ex.count():
qry = sess.query(dbModel).filter(~ex.exists())
for m in qry:
if as_model:
res.append(m)
else:
res.append(self.da_base.to_info(m))
return res
def delete_if_route_is_deleted(self, **kwargs):
"""
:rtype: bool
"""
print_exception = kwargs.get('print_exception', False)
sess = self.get_session()
dbModel = self.da_base.dbModel
try:
ex = sess.query(model.TTRoute).filter(dbModel.route_id == model.TTRoute.id)
if ex.count():
sess.query(dbModel).filter(~ex.exists()).delete(synchronize_session=False)
return True
except Exception as ex:
if print_exception:
tb.traceback(ex)
return False
def generator_by_period(self, ttr_id, prd, **kwargs):
"""
:type ttr_id: int
:type prd: pyticas.ttypes.Period
:rtype: list[TravelTimeInfo]
"""
as_model = kwargs.get('as_model', False)
limit = kwargs.get('limit', None)
group_by = kwargs.get('group_by', None)
order_by = kwargs.get('order_by', None)
window_size = kwargs.get('window_size', 1000)
sfield, sdt = 'time', prd.start_date
efield, edt = 'time', prd.end_date
qry = (self.da_base.session.query(self.da_base.dbModel)
.filter(getattr(self.da_base.dbModel, 'route_id') == ttr_id)
.filter(getattr(self.da_base.dbModel, sfield) <= edt)
.filter(getattr(self.da_base.dbModel, efield) > sdt))
# apply 'order by'
if order_by and isinstance(order_by, tuple):
# e.g. order_by = ('id', 'desc')
# e.g. order_by = ('name', 'asc')
qry = qry.order_by(getattr(getattr(self.da_base.dbModel, order_by[0]), order_by[1])())
if group_by:
if isinstance(group_by, str):
qry = qry.group_by(getattr(self.da_base.dbModel, group_by))
else:
qry = qry.group_by(group_by)
# apply 'limit'
if limit:
qry = qry.limit(limit)
for m in self.da_base.query_generator(qry, window_size):
if as_model:
yield m
else:
yield self.da_base.to_info(m)
def list_by_period(self, ttr_id, prd, **kwargs):
"""
:type ttr_id: int
:type prd: pyticas.ttypes.Period
:rtype: list[pyticas_tetres.ttypes.TravelTimeInfo]
"""
weekdays = kwargs.get('weekdays', None)
window_size = kwargs.get('window_size', 1000)
start_time = kwargs.get('start_time', None)
end_time = kwargs.get('end_time', None)
as_model = kwargs.get('as_model', False)
order_by = kwargs.get('order_by', None)
limit = kwargs.get('limit', None)
sfield, sdt = 'time', prd.start_date
efield, edt = 'time', prd.end_date
qry = self.da_base.session.query(self.da_base.dbModel)
if ttr_id:
qry = qry.filter(self.da_base.dbModel.route_id == ttr_id)
if sdt:
qry = qry.filter(self.da_base.dbModel.time <= edt)
if edt:
qry = qry.filter(self.da_base.dbModel.time >= sdt)
if weekdays:
qry = qry.filter(extract('dow', self.da_base.dbModel.time).in_(weekdays))
if start_time and end_time:
qry = qry.filter(cast(self.da_base.dbModel.time, Time) >= start_time).filter(
cast(self.da_base.dbModel.time, Time) <= end_time)
if order_by and isinstance(order_by, tuple):
# e.g. order_by = ('id', 'desc')
# e.g. order_by = ('name', 'asc')
qry = qry.order_by(getattr(getattr(self.da_base.dbModel, order_by[0]), order_by[1])())
else:
qry = qry.order_by(asc(self.da_base.dbModel.time))
if limit:
qry = qry.limit(limit)
data_list = []
for model_data in qry:
if as_model:
data_list.append(model_data)
else:
data_list.append(self.da_base.to_info(model_data))
return data_list
def get_by_id(self, id):
"""
:type id: int
:rtype: TravelTimeInfo
"""
return self.da_base.get_data_by_id(id)
def delete_range(self, route_id, start_time, end_time, **kwargs):
"""
:type route_id: int
:type start_time: datetime.datetime
:type end_time: datetime.datetime
:rtype: bool
"""
print_exception = kwargs.get('print_exception', False)
try:
dbModel = self.da_base.dbModel
qry = (self.da_base.session.query(dbModel)
.filter(dbModel.route_id == route_id)
.filter(dbModel.time >= start_time)
.filter(dbModel.time <= end_time))
qry.delete(synchronize_session=False)
return True
except Exception as ex:
if print_exception:
tb.traceback(ex)
return False
def delete_all_for_a_route(self, ttr_id, **kwargs):
"""
:type ttr_id: int
"""
print_exception = kwargs.get('print_exception', False)
try:
dbModel = self.da_base.dbModel
stmt = dbModel.__table__.delete(synchronize_session=False).where(dbModel.route_id == ttr_id)
self.execute(stmt)
return True
except Exception as ex:
if print_exception:
tb.traceback(ex)
return False
def insert(self, tti, **kwargs):
"""
:type tti: TravelTimeInfo
:rtype: model.TravelTime
"""
return self.da_base.insert(tti, **kwargs)
def search_date_range(self, sdt, edt):
""" search data overlapped with the given data range
:type sdt: datetime.datetime
:type sdt: datetime.datetime
:rtype: list[pyticas_tetres.ttypes.TravelTimeInfo]
"""
return self.da_base.search_date_range(('time', sdt), ('time', edt))
def get_count(self, route_id, sdt, edt):
"""
:type route_id: int
:type sdt: datetime.datetime
:type sdt: datetime.datetime
:rtype: int
"""
dbModel = self.get_model()
qry = self.get_session().query(func.count(dbModel.id))
qry = qry.filter(dbModel.route_id == route_id)
qry = qry.filter(dbModel.time >= sdt)
qry = qry.filter(dbModel.time <= edt)
cnt = qry.scalar()
return cnt