| # |
| # Licensed to the Apache Software Foundation (ASF) under one or more |
| # contributor license agreements. See the NOTICE file distributed with |
| # this work for additional information regarding copyright ownership. |
| # The ASF licenses this file to You 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. |
| # |
| |
| from typing import Set, List, Type |
| |
| from pywy.core.channel import (CH_T, ChannelDescriptor) |
| from pywy.operators.sink import TextFileSink |
| from pywy.platforms.python.operator.py_execution_operator import PyExecutionOperator |
| from pywy.platforms.python.channels import ( |
| PyIteratorChannel, |
| PY_ITERATOR_CHANNEL_DESCRIPTOR |
| ) |
| |
| |
| class PyTextFileSinkOperator(TextFileSink, PyExecutionOperator): |
| |
| def __init__(self, origin: TextFileSink = None): |
| path = None if origin is None else origin.path |
| type_class = None if origin is None else origin.inputSlot[0] |
| end_line = None if origin is None else origin.end_line |
| super().__init__(path, type_class, end_line) |
| |
| def execute(self, inputs: List[Type[CH_T]], outputs: List[Type[CH_T]]): |
| self.validate_channels(inputs, outputs) |
| if isinstance(inputs[0], PyIteratorChannel): |
| file = open(self.path, 'w') |
| py_in_iter_channel: PyIteratorChannel = inputs[0] |
| iterable = py_in_iter_channel.provide_iterable() |
| |
| if self.inputSlot[0] == str and self.end_line is None: |
| for element in iterable: |
| file.write(element) |
| else: |
| for element in iterable: |
| file.write("{}{}".format(str(element), self.end_line)) |
| file.close() |
| |
| else: |
| raise Exception("Channel Type does not supported") |
| |
| def get_input_channeldescriptors(self) -> Set[ChannelDescriptor]: |
| return {PY_ITERATOR_CHANNEL_DESCRIPTOR} |
| |
| def get_output_channeldescriptors(self) -> Set[ChannelDescriptor]: |
| raise Exception("The PyTextFileSource does not support Output Channels") |