| from pywayang.operator.sink import TextFileSink |
| from pywayang.platforms.python.operators.PythonExecutionOperator import PythonExecutionOperator |
| from pywayang.platforms.python.channels import ( |
| Channel, |
| ChannelDescriptor, |
| PyIteratorChannel, |
| PyIteratorChannelDescriptor |
| ) |
| from typing import Set |
| |
| class PyTextFileSinkOperator(TextFileSink, PythonExecutionOperator): |
| |
| def __init__(self, origin: TextFileSink = None): |
| path = None if origin is None else origin.path |
| super().__init__(path) |
| pass |
| |
| def execute(self, inputs: Channel, outputs: Channel): |
| self.validateChannels(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(); |
| for element in iterable: |
| file.write(str(element)) |
| file.close() |
| |
| else: |
| raise Exception("Channel Type does not supported") |
| |
| |
| def getInputChannelDescriptors(self) -> Set[ChannelDescriptor]: |
| return {PyIteratorChannelDescriptor} |
| |
| def getOutputChannelDescriptors(self) -> Set[ChannelDescriptor]: |
| raise Exception("The PyTextFileSource does not support Output Channels") |