def execute(self, cursor, state):
table = self.table(state)
timestamp = self.timestamp(state)
entityselection = self.entityselection(state)
trend_names = self.trend_names(state)
actual_column_names = set(get_column_names(cursor, table))
required_column_names = schema.system_columns_set | set(trend_names)
if required_column_names != actual_column_names:
return drop_action()
try:
delete_by_entityselection(cursor, table, timestamp, entityselection)
except NoSuchTable:
return drop_action()
def execute(self, cursor, state):
partition = self.partition(state)
trend_names = self.trend_names(state)
data_types = self.data_types(state)
try:
partition.create(cursor)
except DuplicateTable:
return drop_action()
partition.check_columns_exist(trend_names, data_types)(cursor)