def __init__(self, engine, table, column,
aggregats=['count'],
database='default',
model=None):
self.verbose = 0
self.table = table
self.column = column
self.aggregats = aggregats
self.database = database
self.model = model
self.functions = {}
# use the right backend
if engine == PG_BACKEND:
from databases.pg import TriggerPostgreSQL
self.backend = TriggerPostgreSQL()
else:
raise DatabaseNotSupported()
for agg in self.aggregats:
if isinstance(agg, dict):
for agg_key, where_clause in self.extract_agg_where_clause(
agg).iteritems():
for action in ["insert", "update", "delete"]:
fname = function_name(table, column,
action, key=agg_key)
self.functions[fname] = action
else:
for action in ["insert", "update", "delete"]:
fname = function_name(table, column, action)
self.functions[fname] = action
