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

datafusion_python/expr/
create_view.rs
