datafusion_python/expr/
recursive_query.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::RecursiveQuery;
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 = "RecursiveQuery",
31    module = "datafusion.expr",
32    subclass
33)]
34#[derive(Clone)]
35pub struct PyRecursiveQuery {
36    query: RecursiveQuery,
37}
38
39impl From<PyRecursiveQuery> for RecursiveQuery {
40    fn from(query: PyRecursiveQuery) -> Self {
41        query.query
42    }
43}
44
45impl From<RecursiveQuery> for PyRecursiveQuery {
46    fn from(query: RecursiveQuery) -> PyRecursiveQuery {
47        PyRecursiveQuery { query }
48    }
49}
50
51impl Display for PyRecursiveQuery {
52    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
53        write!(
54            f,
55            "RecursiveQuery {name:?} is_distinct:={is_distinct}",
56            name = self.query.name,
57            is_distinct = self.query.is_distinct
58        )
59    }
60}
61
62#[pymethods]
63impl PyRecursiveQuery {
64    #[new]
65    fn new(
66        name: String,
67        static_term: PyLogicalPlan,
68        recursive_term: PyLogicalPlan,
69        is_distinct: bool,
70    ) -> Self {
71        Self {
72            query: RecursiveQuery {
73                name,
74                static_term: static_term.plan(),
75                recursive_term: recursive_term.plan(),
76                is_distinct,
77            },
78        }
79    }
80
81    fn name(&self) -> PyResult<String> {
82        Ok(self.query.name.clone())
83    }
84
85    fn static_term(&self) -> PyLogicalPlan {
86        PyLogicalPlan::from((*self.query.static_term).clone())
87    }
88
89    fn recursive_term(&self) -> PyLogicalPlan {
90        PyLogicalPlan::from((*self.query.recursive_term).clone())
91    }
92
93    fn is_distinct(&self) -> PyResult<bool> {
94        Ok(self.query.is_distinct)
95    }
96
97    fn __repr__(&self) -> PyResult<String> {
98        Ok(format!("RecursiveQuery({self})"))
99    }
100
101    fn __name__(&self) -> PyResult<String> {
102        Ok("RecursiveQuery".to_string())
103    }
104}
105
106impl LogicalNode for PyRecursiveQuery {
107    fn inputs(&self) -> Vec<PyLogicalPlan> {
108        vec![
109            PyLogicalPlan::from((*self.query.static_term).clone()),
110            PyLogicalPlan::from((*self.query.recursive_term).clone()),
111        ]
112    }
113
114    fn to_variant<'py>(&self, py: Python<'py>) -> PyResult<Bound<'py, PyAny>> {
115        self.clone().into_bound_py_any(py)
116    }
117}
datafusion_python/expr/recursive_query.rs

datafusion_python/expr/
recursive_query.rs
