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(
26    from_py_object,
27    frozen,
28    name = "UnnestExpr",
29    module = "datafusion.expr",
30    subclass
31)]
32#[derive(Clone)]
33pub struct PyUnnestExpr {
34    unnest: Unnest,
35}
36
37impl From<Unnest> for PyUnnestExpr {
38    fn from(unnest: Unnest) -> PyUnnestExpr {
39        PyUnnestExpr { unnest }
40    }
41}
42
43impl From<PyUnnestExpr> for Unnest {
44    fn from(unnest: PyUnnestExpr) -> Self {
45        unnest.unnest
46    }
47}
48
49impl Display for PyUnnestExpr {
50    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
51        write!(
52            f,
53            "Unnest
54            Expr: {:?}",
55            &self.unnest.expr,
56        )
57    }
58}
59
60#[pymethods]
61impl PyUnnestExpr {
62    /// Retrieves the expression that is being unnested
63    fn expr(&self) -> PyResult<PyExpr> {
64        Ok((*self.unnest.expr).clone().into())
65    }
66
67    fn __repr__(&self) -> PyResult<String> {
68        Ok(format!("UnnestExpr({self})"))
69    }
70
71    fn __name__(&self) -> PyResult<String> {
72        Ok("UnnestExpr".to_string())
73    }
74}
datafusion_python/expr/unnest_expr.rs

datafusion_python/expr/
unnest_expr.rs
