// 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. use pyo3::{PyObject, PyResult, Python}; use crate::sql::logical::PyLogicalPlan; /// Representation of a `LogicalNode` in the in overall `LogicalPlan` /// any "node" shares these common traits in common. pub trait LogicalNode { /// The input plan to the current logical node instance. fn inputs(&self) -> Vec; fn to_variant(&self, py: Python) -> PyResult; }