| # |
| # 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 pywy.operators.base import PywyOperator |
| from pywy.types import ( |
| GenericTco, |
| GenericUco, |
| Predicate, |
| get_type_predicate, |
| Function, |
| get_type_function, |
| FlatmapFunction, |
| get_type_flatmap_function |
| ) |
| |
| |
| class UnaryToUnaryOperator(PywyOperator): |
| |
| def __init__(self, name: str, input_type: GenericTco, output_type: GenericUco): |
| super().__init__(name, input_type, output_type, 1, 1) |
| |
| def postfix(self) -> str: |
| return 'OperatorUnary' |
| |
| def __str__(self): |
| return super().__str__() |
| |
| def __repr__(self): |
| return super().__repr__() |
| |
| |
| class FilterOperator(UnaryToUnaryOperator): |
| |
| predicate: Predicate |
| |
| def __init__(self, predicate: Predicate): |
| predicate_type = get_type_predicate(predicate) if predicate else None |
| super().__init__("Filter", predicate_type, predicate_type) |
| self.predicate = predicate |
| |
| def __str__(self): |
| return super().__str__() |
| |
| def __repr__(self): |
| return super().__repr__() |
| |
| |
| class MapOperator(UnaryToUnaryOperator): |
| |
| function: Function |
| |
| def __init__(self, function: Function): |
| types = get_type_function(function) if function else (None, None) |
| super().__init__("Map", types[0], types[1]) |
| self.function = function |
| |
| def __str__(self): |
| return super().__str__() |
| |
| def __repr__(self): |
| return super().__repr__() |
| |
| |
| class FlatmapOperator(UnaryToUnaryOperator): |
| |
| fm_function: FlatmapFunction |
| |
| def __init__(self, fm_function: FlatmapFunction): |
| types = get_type_flatmap_function(fm_function) if fm_function else (None, None) |
| super().__init__("Flatmap", types[0], types[1]) |
| self.fm_function = fm_function |
| |
| def __str__(self): |
| return super().__str__() |
| |
| def __repr__(self): |
| return super().__repr__() |