datafusion_python/expr/
placeholder.rs

1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements.  See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership.  The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License.  You may obtain a copy of the License at
8//
9//   http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied.  See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18use datafusion::logical_expr::expr::Placeholder;
19use pyo3::prelude::*;
20
21use crate::common::data_type::PyDataType;
22
23#[pyclass(name = "Placeholder", module = "datafusion.expr", subclass)]
24#[derive(Clone)]
25pub struct PyPlaceholder {
26    placeholder: Placeholder,
27}
28
29impl From<Placeholder> for PyPlaceholder {
30    fn from(placeholder: Placeholder) -> Self {
31        PyPlaceholder { placeholder }
32    }
33}
34
35#[pymethods]
36impl PyPlaceholder {
37    fn id(&self) -> String {
38        self.placeholder.id.clone()
39    }
40
41    fn data_type(&self) -> Option<PyDataType> {
42        self.placeholder
43            .data_type
44            .as_ref()
45            .map(|e| e.clone().into())
46    }
47}
datafusion_python/expr/placeholder.rs

datafusion_python/expr/
placeholder.rs
