// 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 datafusion::arrow::datatypes::DataType;

use pyo3::prelude::*;

use crate::common::data_type::PyDataType;

#[pyclass(name = "Placeholder", module = "datafusion.expr", subclass)]

#[derive(Clone)]

pub struct PyPlaceholder {

id: String,

data_type: Option<DataType>,

}

impl PyPlaceholder {

pub fn new(id: String, data_type: DataType) -> Self {

Self {

id,

data_type: Some(data_type),

}

}

}

#[pymethods]

impl PyPlaceholder {

fn id(&self) -> String {

self.id.clone()

}

fn data_type(&self) -> Option<PyDataType> {

self.data_type.as_ref().map(|e| e.clone().into())

}

}