crates/core/src/expr/exists.rs

// Licensed to the Apache Software Foundation (ASF) under one
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// 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,
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use datafusion::logical_expr::expr::Exists;
use pyo3::prelude::*;

use super::subquery::PySubquery;

#[pyclass(
    from_py_object,
    frozen,
    name = "Exists",
    module = "datafusion.expr",
    subclass
)]
#[derive(Clone)]
pub struct PyExists {
    exists: Exists,
}

impl From<Exists> for PyExists {
    fn from(exists: Exists) -> Self {
        PyExists { exists }
    }
}

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

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