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sort_expr.rs
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71 lines (62 loc) · 1.89 KB
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
use crate::expr::PyExpr;
use datafusion_expr::SortExpr;
use pyo3::prelude::*;
use std::fmt::{self, Display, Formatter};
#[pyclass(name = "SortExpr", module = "datafusion.expr", subclass)]
#[derive(Clone)]
pub struct PySortExpr {
sort: SortExpr,
}
impl From<PySortExpr> for SortExpr {
fn from(sort: PySortExpr) -> Self {
sort.sort
}
}
impl From<SortExpr> for PySortExpr {
fn from(sort: SortExpr) -> PySortExpr {
PySortExpr { sort }
}
}
impl Display for PySortExpr {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(
f,
"Sort
Expr: {:?}
Asc: {:?}
NullsFirst: {:?}",
&self.sort.expr, &self.sort.asc, &self.sort.nulls_first
)
}
}
#[pymethods]
impl PySortExpr {
fn expr(&self) -> PyResult<PyExpr> {
Ok((*self.sort.expr).clone().into())
}
fn ascending(&self) -> PyResult<bool> {
Ok(self.sort.asc)
}
fn nulls_first(&self) -> PyResult<bool> {
Ok(self.sort.nulls_first)
}
fn __repr__(&self) -> String {
format!("{}", self)
}
}