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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 datafusion::logical_expr::{Expr, GroupingSet};
use pyo3::prelude::*;
use crate::expr::PyExpr;
#[pyclass(
from_py_object,
frozen,
name = "GroupingSet",
module = "datafusion.expr",
subclass
)]
#[derive(Clone)]
pub struct PyGroupingSet {
grouping_set: GroupingSet,
}
#[pymethods]
impl PyGroupingSet {
#[staticmethod]
#[pyo3(signature = (*exprs))]
fn rollup(exprs: Vec<PyExpr>) -> PyExpr {
Expr::GroupingSet(GroupingSet::Rollup(
exprs.into_iter().map(|e| e.expr).collect(),
))
.into()
}
#[staticmethod]
#[pyo3(signature = (*exprs))]
fn cube(exprs: Vec<PyExpr>) -> PyExpr {
Expr::GroupingSet(GroupingSet::Cube(
exprs.into_iter().map(|e| e.expr).collect(),
))
.into()
}
#[staticmethod]
#[pyo3(signature = (*expr_lists))]
fn grouping_sets(expr_lists: Vec<Vec<PyExpr>>) -> PyExpr {
Expr::GroupingSet(GroupingSet::GroupingSets(
expr_lists
.into_iter()
.map(|list| list.into_iter().map(|e| e.expr).collect())
.collect(),
))
.into()
}
}
impl From<PyGroupingSet> for GroupingSet {
fn from(grouping_set: PyGroupingSet) -> Self {
grouping_set.grouping_set
}
}
impl From<GroupingSet> for PyGroupingSet {
fn from(grouping_set: GroupingSet) -> PyGroupingSet {
PyGroupingSet { grouping_set }
}
}