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Copy pathbase.py
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63 lines (52 loc) · 1.9 KB
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# Copyright 2020 The SQLFlow Authors. All rights reserved.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys
if sys.version > '3':
from abc import ABC, abstractmethod
class BufferedDBWriter(ABC):
def __init__(self, conn, table_name, table_schema, buff_size=100):
self.conn = conn
self.table_name = table_name
self.table_schema = table_schema
self.buff_size = buff_size
self.rows = []
@abstractmethod
def flush(self):
return
def write(self, value):
self.rows.append(value)
if len(self.rows) > self.buff_size:
self.flush()
def close(self):
if len(self.rows) > 0:
self.flush()
else:
from abc import ABCMeta, abstractmethod
class BufferedDBWriter():
__metaclass__ = ABCMeta
def __init__(self, conn, table_name, table_schema, buff_size=100):
self.conn = conn
self.table_name = table_name
self.table_schema = table_schema
self.buff_size = buff_size
self.rows = []
@abstractmethod
def flush(self):
return
def write(self, value):
self.rows.append(value)
if len(self.rows) > self.buff_size:
self.flush()
def close(self):
if len(self.rows) > 0:
self.flush()