datafusion_python/expr/
unnest_expr.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 std::fmt::{self, Display, Formatter};
19
20use datafusion::logical_expr::expr::Unnest;
21use pyo3::prelude::*;
22
23use super::PyExpr;
24
25#[pyclass(frozen, name = "UnnestExpr", module = "datafusion.expr", subclass)]
26#[derive(Clone)]
27pub struct PyUnnestExpr {
28    unnest: Unnest,
29}
30
31impl From<Unnest> for PyUnnestExpr {
32    fn from(unnest: Unnest) -> PyUnnestExpr {
33        PyUnnestExpr { unnest }
34    }
35}
36
37impl From<PyUnnestExpr> for Unnest {
38    fn from(unnest: PyUnnestExpr) -> Self {
39        unnest.unnest
40    }
41}
42
43impl Display for PyUnnestExpr {
44    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
45        write!(
46            f,
47            "Unnest
48            Expr: {:?}",
49            &self.unnest.expr,
50        )
51    }
52}
53
54#[pymethods]
55impl PyUnnestExpr {
56    /// Retrieves the expression that is being unnested
57    fn expr(&self) -> PyResult<PyExpr> {
58        Ok((*self.unnest.expr).clone().into())
59    }
60
61    fn __repr__(&self) -> PyResult<String> {
62        Ok(format!("UnnestExpr({self})"))
63    }
64
65    fn __name__(&self) -> PyResult<String> {
66        Ok("UnnestExpr".to_string())
67    }
68}
datafusion_python/expr/unnest_expr.rs

datafusion_python/expr/
unnest_expr.rs
