datafusion_python/expr/
cast.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 datafusion::logical_expr::{Cast, TryCast};
19use pyo3::prelude::*;
20
21use crate::common::data_type::PyDataType;
22use crate::expr::PyExpr;
23
24#[pyclass(
25    from_py_object,
26    frozen,
27    name = "Cast",
28    module = "datafusion.expr",
29    subclass
30)]
31#[derive(Clone)]
32pub struct PyCast {
33    cast: Cast,
34}
35
36impl From<PyCast> for Cast {
37    fn from(cast: PyCast) -> Self {
38        cast.cast
39    }
40}
41
42impl From<Cast> for PyCast {
43    fn from(cast: Cast) -> PyCast {
44        PyCast { cast }
45    }
46}
47
48#[pymethods]
49impl PyCast {
50    fn expr(&self) -> PyResult<PyExpr> {
51        Ok((*self.cast.expr).clone().into())
52    }
53
54    fn data_type(&self) -> PyResult<PyDataType> {
55        Ok(self.cast.data_type.clone().into())
56    }
57}
58
59#[pyclass(from_py_object, name = "TryCast", module = "datafusion.expr", subclass)]
60#[derive(Clone)]
61pub struct PyTryCast {
62    try_cast: TryCast,
63}
64
65impl From<PyTryCast> for TryCast {
66    fn from(try_cast: PyTryCast) -> Self {
67        try_cast.try_cast
68    }
69}
70
71impl From<TryCast> for PyTryCast {
72    fn from(try_cast: TryCast) -> PyTryCast {
73        PyTryCast { try_cast }
74    }
75}
76
77#[pymethods]
78impl PyTryCast {
79    fn expr(&self) -> PyResult<PyExpr> {
80        Ok((*self.try_cast.expr).clone().into())
81    }
82
83    fn data_type(&self) -> PyResult<PyDataType> {
84        Ok(self.try_cast.data_type.clone().into())
85    }
86}
datafusion_python/expr/cast.rs

datafusion_python/expr/
cast.rs
