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::{prelude::*, IntoPyObjectExt};
22
23use crate::sql::logical::PyLogicalPlan;
24
25use super::logical_node::LogicalNode;
26
27#[pyclass(name = "RecursiveQuery", module = "datafusion.expr", subclass)]
28#[derive(Clone)]
29pub struct PyRecursiveQuery {
30    query: RecursiveQuery,
31}
32
33impl From<PyRecursiveQuery> for RecursiveQuery {
34    fn from(query: PyRecursiveQuery) -> Self {
35        query.query
36    }
37}
38
39impl From<RecursiveQuery> for PyRecursiveQuery {
40    fn from(query: RecursiveQuery) -> PyRecursiveQuery {
41        PyRecursiveQuery { query }
42    }
43}
44
45impl Display for PyRecursiveQuery {
46    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
47        write!(
48            f,
49            "RecursiveQuery {name:?} is_distinct:={is_distinct}",
50            name = self.query.name,
51            is_distinct = self.query.is_distinct
52        )
53    }
54}
55
56#[pymethods]
57impl PyRecursiveQuery {
58    #[new]
59    fn new(
60        name: String,
61        static_term: PyLogicalPlan,
62        recursive_term: PyLogicalPlan,
63        is_distinct: bool,
64    ) -> Self {
65        Self {
66            query: RecursiveQuery {
67                name,
68                static_term: static_term.plan(),
69                recursive_term: recursive_term.plan(),
70                is_distinct,
71            },
72        }
73    }
74
75    fn name(&self) -> PyResult<String> {
76        Ok(self.query.name.clone())
77    }
78
79    fn static_term(&self) -> PyLogicalPlan {
80        PyLogicalPlan::from((*self.query.static_term).clone())
81    }
82
83    fn recursive_term(&self) -> PyLogicalPlan {
84        PyLogicalPlan::from((*self.query.recursive_term).clone())
85    }
86
87    fn is_distinct(&self) -> PyResult<bool> {
88        Ok(self.query.is_distinct)
89    }
90
91    fn __repr__(&self) -> PyResult<String> {
92        Ok(format!("RecursiveQuery({})", self))
93    }
94
95    fn __name__(&self) -> PyResult<String> {
96        Ok("RecursiveQuery".to_string())
97    }
98}
99
100impl LogicalNode for PyRecursiveQuery {
101    fn inputs(&self) -> Vec<PyLogicalPlan> {
102        vec![
103            PyLogicalPlan::from((*self.query.static_term).clone()),
104            PyLogicalPlan::from((*self.query.recursive_term).clone()),
105        ]
106    }
107
108    fn to_variant<'py>(&self, py: Python<'py>) -> PyResult<Bound<'py, PyAny>> {
109        self.clone().into_bound_py_any(py)
110    }
111}
datafusion_python/expr/recursive_query.rs

datafusion_python/expr/
recursive_query.rs
