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Database operation module
class _LasyConnection(object):
def __init__(self):
self.connection = None
def cursor(self):
if self.connection is None:
connection = engine.connect()
logging.info('open connection <%s>...' % hex(id(connection)))
self.connection = connection
return self.connection.cursor()
def commit(self):
self.connection.commit()
def rollback(self):
self.connection.rollback()
def cleanup(self):
if self.connection:
connection = self.connection
self.connection = None
logging.info('close connection <%s>...' % hex(id(connection)))
connection.close()