src/expr/exists.rs

// 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_expr::Subquery;
use pyo3::prelude::*;

use super::subquery::PySubquery;

#[pyclass(name = "Exists", module = "datafusion.expr", subclass)]
#[derive(Clone)]
pub struct PyExists {
    subquery: Subquery,
    negated: bool,
}

impl PyExists {
    pub fn new(subquery: Subquery, negated: bool) -> Self {
        Self { subquery, negated }
    }
}

#[pymethods]
impl PyExists {
    fn subquery(&self) -> PySubquery {
        self.subquery.clone().into()
    }

    fn negated(&self) -> bool {
        self.negated
    }
}