datafusion_python/expr/
create_view.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::{CreateView, DdlStatement, LogicalPlan};
21use pyo3::prelude::*;
22use pyo3::IntoPyObjectExt;
23
24use super::logical_node::LogicalNode;
25use crate::errors::py_type_err;
26use crate::sql::logical::PyLogicalPlan;
27
28#[pyclass(frozen, name = "CreateView", module = "datafusion.expr", subclass)]
29#[derive(Clone)]
30pub struct PyCreateView {
31    create: CreateView,
32}
33
34impl From<PyCreateView> for CreateView {
35    fn from(create: PyCreateView) -> Self {
36        create.create
37    }
38}
39
40impl From<CreateView> for PyCreateView {
41    fn from(create: CreateView) -> PyCreateView {
42        PyCreateView { create }
43    }
44}
45
46impl Display for PyCreateView {
47    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
48        write!(
49            f,
50            "CreateView
51            name: {:?}
52            input: {:?}
53            or_replace: {:?}
54            definition: {:?}",
55            &self.create.name, &self.create.input, &self.create.or_replace, &self.create.definition,
56        )
57    }
58}
59
60#[pymethods]
61impl PyCreateView {
62    fn name(&self) -> PyResult<String> {
63        Ok(self.create.name.to_string())
64    }
65
66    fn input(&self) -> PyResult<Vec<PyLogicalPlan>> {
67        Ok(Self::inputs(self))
68    }
69
70    fn or_replace(&self) -> bool {
71        self.create.or_replace
72    }
73
74    fn definition(&self) -> PyResult<Option<String>> {
75        Ok(self.create.definition.clone())
76    }
77
78    fn __repr__(&self) -> PyResult<String> {
79        Ok(format!("CreateView({self})"))
80    }
81
82    fn __name__(&self) -> PyResult<String> {
83        Ok("CreateView".to_string())
84    }
85}
86
87impl LogicalNode for PyCreateView {
88    fn inputs(&self) -> Vec<PyLogicalPlan> {
89        vec![PyLogicalPlan::from((*self.create.input).clone())]
90    }
91
92    fn to_variant<'py>(&self, py: Python<'py>) -> PyResult<Bound<'py, PyAny>> {
93        self.clone().into_bound_py_any(py)
94    }
95}
96
97impl TryFrom<LogicalPlan> for PyCreateView {
98    type Error = PyErr;
99
100    fn try_from(logical_plan: LogicalPlan) -> Result<Self, Self::Error> {
101        match logical_plan {
102            LogicalPlan::Ddl(DdlStatement::CreateView(create)) => Ok(PyCreateView { create }),
103            _ => Err(py_type_err("unexpected plan")),
104        }
105    }
106}
datafusion_python/expr/create_view.rs

datafusion_python/expr/
create_view.rs
