datafusion_python/expr/
distinct.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::Distinct;
21use pyo3::IntoPyObjectExt;
22use pyo3::prelude::*;
23
24use super::logical_node::LogicalNode;
25use crate::sql::logical::PyLogicalPlan;
26
27#[pyclass(
28    from_py_object,
29    frozen,
30    name = "Distinct",
31    module = "datafusion.expr",
32    subclass
33)]
34#[derive(Clone)]
35pub struct PyDistinct {
36    distinct: Distinct,
37}
38
39impl From<PyDistinct> for Distinct {
40    fn from(distinct: PyDistinct) -> Self {
41        distinct.distinct
42    }
43}
44
45impl From<Distinct> for PyDistinct {
46    fn from(distinct: Distinct) -> PyDistinct {
47        PyDistinct { distinct }
48    }
49}
50
51impl Display for PyDistinct {
52    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
53        match &self.distinct {
54            Distinct::All(input) => write!(
55                f,
56                "Distinct ALL
57            \nInput: {input:?}",
58            ),
59            Distinct::On(distinct_on) => {
60                write!(
61                    f,
62                    "Distinct ON
63            \nInput: {:?}",
64                    distinct_on.input,
65                )
66            }
67        }
68    }
69}
70
71#[pymethods]
72impl PyDistinct {
73    /// Retrieves the input `LogicalPlan` to this `Projection` node
74    fn input(&self) -> PyResult<Vec<PyLogicalPlan>> {
75        Ok(Self::inputs(self))
76    }
77
78    fn __repr__(&self) -> PyResult<String> {
79        Ok(format!("Distinct({self})"))
80    }
81
82    fn __name__(&self) -> PyResult<String> {
83        Ok("Distinct".to_string())
84    }
85}
86
87impl LogicalNode for PyDistinct {
88    fn inputs(&self) -> Vec<PyLogicalPlan> {
89        match &self.distinct {
90            Distinct::All(input) => vec![PyLogicalPlan::from(input.as_ref().clone())],
91            Distinct::On(distinct_on) => {
92                vec![PyLogicalPlan::from(distinct_on.input.as_ref().clone())]
93            }
94        }
95    }
96
97    fn to_variant<'py>(&self, py: Python<'py>) -> PyResult<Bound<'py, PyAny>> {
98        self.clone().into_bound_py_any(py)
99    }
100}
datafusion_python/expr/distinct.rs

datafusion_python/expr/
distinct.rs
