datafusion_python/expr/
create_external_table.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::collections::HashMap;
19use std::fmt::{self, Display, Formatter};
20use std::sync::Arc;
21
22use datafusion::logical_expr::CreateExternalTable;
23use pyo3::IntoPyObjectExt;
24use pyo3::prelude::*;
25
26use super::logical_node::LogicalNode;
27use super::sort_expr::PySortExpr;
28use crate::common::df_schema::PyDFSchema;
29use crate::common::schema::PyConstraints;
30use crate::expr::PyExpr;
31use crate::sql::logical::PyLogicalPlan;
32
33#[pyclass(
34    from_py_object,
35    frozen,
36    name = "CreateExternalTable",
37    module = "datafusion.expr",
38    subclass
39)]
40#[derive(Clone)]
41pub struct PyCreateExternalTable {
42    create: CreateExternalTable,
43}
44
45impl From<PyCreateExternalTable> for CreateExternalTable {
46    fn from(create: PyCreateExternalTable) -> Self {
47        create.create
48    }
49}
50
51impl From<CreateExternalTable> for PyCreateExternalTable {
52    fn from(create: CreateExternalTable) -> PyCreateExternalTable {
53        PyCreateExternalTable { create }
54    }
55}
56
57impl Display for PyCreateExternalTable {
58    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
59        write!(
60            f,
61            "CreateExternalTable: {:?}{}",
62            self.create.name, self.create.constraints
63        )
64    }
65}
66
67#[pymethods]
68impl PyCreateExternalTable {
69    #[allow(clippy::too_many_arguments)]
70    #[new]
71    #[pyo3(signature = (schema, name, location, file_type, table_partition_cols, if_not_exists, or_replace, temporary, order_exprs, unbounded, options, constraints, column_defaults, definition=None))]
72    pub fn new(
73        schema: PyDFSchema,
74        name: String,
75        location: String,
76        file_type: String,
77        table_partition_cols: Vec<String>,
78        if_not_exists: bool,
79        or_replace: bool,
80        temporary: bool,
81        order_exprs: Vec<Vec<PySortExpr>>,
82        unbounded: bool,
83        options: HashMap<String, String>,
84        constraints: PyConstraints,
85        column_defaults: HashMap<String, PyExpr>,
86        definition: Option<String>,
87    ) -> Self {
88        let create = CreateExternalTable {
89            schema: Arc::new(schema.into()),
90            name: name.into(),
91            location,
92            file_type,
93            table_partition_cols,
94            if_not_exists,
95            or_replace,
96            temporary,
97            definition,
98            order_exprs: order_exprs
99                .into_iter()
100                .map(|vec| vec.into_iter().map(|s| s.into()).collect::<Vec<_>>())
101                .collect::<Vec<_>>(),
102            unbounded,
103            options,
104            constraints: constraints.constraints,
105            column_defaults: column_defaults
106                .into_iter()
107                .map(|(k, v)| (k, v.into()))
108                .collect(),
109        };
110        PyCreateExternalTable { create }
111    }
112
113    pub fn schema(&self) -> PyDFSchema {
114        (*self.create.schema).clone().into()
115    }
116
117    pub fn name(&self) -> PyResult<String> {
118        Ok(self.create.name.to_string())
119    }
120
121    pub fn location(&self) -> String {
122        self.create.location.clone()
123    }
124
125    pub fn file_type(&self) -> String {
126        self.create.file_type.clone()
127    }
128
129    pub fn table_partition_cols(&self) -> Vec<String> {
130        self.create.table_partition_cols.clone()
131    }
132
133    pub fn if_not_exists(&self) -> bool {
134        self.create.if_not_exists
135    }
136
137    pub fn temporary(&self) -> bool {
138        self.create.temporary
139    }
140
141    pub fn definition(&self) -> Option<String> {
142        self.create.definition.clone()
143    }
144
145    pub fn order_exprs(&self) -> Vec<Vec<PySortExpr>> {
146        self.create
147            .order_exprs
148            .iter()
149            .map(|vec| vec.iter().map(|s| s.clone().into()).collect())
150            .collect()
151    }
152
153    pub fn unbounded(&self) -> bool {
154        self.create.unbounded
155    }
156
157    pub fn options(&self) -> HashMap<String, String> {
158        self.create.options.clone()
159    }
160
161    pub fn constraints(&self) -> PyConstraints {
162        PyConstraints {
163            constraints: self.create.constraints.clone(),
164        }
165    }
166
167    pub fn column_defaults(&self) -> HashMap<String, PyExpr> {
168        self.create
169            .column_defaults
170            .iter()
171            .map(|(k, v)| (k.clone(), v.clone().into()))
172            .collect()
173    }
174
175    fn __repr__(&self) -> PyResult<String> {
176        Ok(format!("CreateExternalTable({self})"))
177    }
178
179    fn __name__(&self) -> PyResult<String> {
180        Ok("CreateExternalTable".to_string())
181    }
182}
183
184impl LogicalNode for PyCreateExternalTable {
185    fn inputs(&self) -> Vec<PyLogicalPlan> {
186        vec![]
187    }
188
189    fn to_variant<'py>(&self, py: Python<'py>) -> PyResult<Bound<'py, PyAny>> {
190        self.clone().into_bound_py_any(py)
191    }
192}
datafusion_python/expr/create_external_table.rs

datafusion_python/expr/
create_external_table.rs
