SophieTech88 commented on code in PR #5646: URL: https://github.com/apache/gravitino/pull/5646#discussion_r1855125964
########## clients/client-python/gravitino/api/expressions/function_expression.py: ########## @@ -0,0 +1,90 @@ +# 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 __future__ import annotations +from abc import abstractmethod +from typing import List, Union +from gravitino.api.expressions.expression import Expression + + +class FunctionExpression(Expression): + """ + The interface of a function expression. A function expression is an expression that takes a + function name and a list of arguments. + """ + + @staticmethod + def of(function_name: str, *arguments: Expression) -> FuncExpressionImpl: + """ + Creates a new FunctionExpression with the given function name. + If no arguments are provided, it uses an empty expression. + + :param function_name: The name of the function. + :param arguments: The arguments to the function (optional). + :return: The created FunctionExpression. + """ + arguments = list(arguments) if arguments else Expression.EMPTY_EXPRESSION + return FuncExpressionImpl(function_name, arguments) + + @abstractmethod + def function_name(self) -> str: + """Returns the function name.""" + pass + + @abstractmethod + def arguments(self) -> List[Expression]: + """Returns the arguments passed to the function.""" + pass + + def children(self) -> List[Expression]: + """Returns the arguments as children.""" + return self.arguments() + + +class FuncExpressionImpl(FunctionExpression): + """ + A concrete implementation of the FunctionExpression interface. + """ + + def __init__(self, function_name: str, arguments: List[Expression]): + super().__init__() + self._function_name = function_name + self._arguments = arguments + + def function_name(self) -> str: + return self._function_name + + def arguments(self) -> List[Expression]: + return self._arguments + + def __str__(self) -> str: + if not self._arguments: + return f"{self._function_name}()" + arguments_str = ", ".join(map(str, self._arguments)) + return f"{self._function_name}({arguments_str})" + + def __eq__(self, other: Union[FuncExpressionImpl, object]) -> bool: + if isinstance(other, FuncExpressionImpl): + return ( + self._function_name == other._function_name + and self._arguments == other._arguments + ) + return False Review Comment: Thanks for your comment. Updated the TODO comment. Does that work for you? -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
