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

datafusion_python/expr/
unnest_expr.rs
