1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130

// 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.

#[cfg(feature = "mimalloc")]
use mimalloc::MiMalloc;
use pyo3::prelude::*;

// Re-export Apache Arrow DataFusion dependencies
pub use datafusion;
pub use datafusion_common;
pub use datafusion_expr;
pub use datafusion_optimizer;
pub use datafusion_sql;

#[cfg(feature = "substrait")]
pub use datafusion_substrait;

#[allow(clippy::borrow_deref_ref)]
pub mod catalog;
pub mod common;
#[allow(clippy::borrow_deref_ref)]
mod config;
#[allow(clippy::borrow_deref_ref)]
pub mod context;
#[allow(clippy::borrow_deref_ref)]
pub mod dataframe;
mod dataset;
mod dataset_exec;
pub mod errors;
#[allow(clippy::borrow_deref_ref)]
pub mod expr;
#[allow(clippy::borrow_deref_ref)]
mod functions;
pub mod physical_plan;
mod pyarrow_filter_expression;
mod record_batch;
pub mod sql;
pub mod store;

#[cfg(feature = "substrait")]
pub mod substrait;
#[allow(clippy::borrow_deref_ref)]
mod udaf;
#[allow(clippy::borrow_deref_ref)]
mod udf;
pub mod utils;

#[cfg(feature = "mimalloc")]
#[global_allocator]
static GLOBAL: MiMalloc = MiMalloc;

// Used to define Tokio Runtime as a Python module attribute
#[pyclass]
pub(crate) struct TokioRuntime(tokio::runtime::Runtime);

/// Low-level DataFusion internal package.
///
/// The higher-level public API is defined in pure python files under the
/// datafusion directory.
#[pymodule]
fn _internal(py: Python, m: Bound<'_, PyModule>) -> PyResult<()> {
    // Register the Tokio Runtime as a module attribute so we can reuse it
    m.add(
        "runtime",
        TokioRuntime(tokio::runtime::Runtime::new().unwrap()),
    )?;
    // Register the python classes
    m.add_class::<catalog::PyCatalog>()?;
    m.add_class::<catalog::PyDatabase>()?;
    m.add_class::<catalog::PyTable>()?;
    m.add_class::<context::PyRuntimeConfig>()?;
    m.add_class::<context::PySessionConfig>()?;
    m.add_class::<context::PySessionContext>()?;
    m.add_class::<context::PySQLOptions>()?;
    m.add_class::<dataframe::PyDataFrame>()?;
    m.add_class::<udf::PyScalarUDF>()?;
    m.add_class::<udaf::PyAggregateUDF>()?;
    m.add_class::<config::PyConfig>()?;
    m.add_class::<sql::logical::PyLogicalPlan>()?;
    m.add_class::<physical_plan::PyExecutionPlan>()?;
    m.add_class::<record_batch::PyRecordBatch>()?;
    m.add_class::<record_batch::PyRecordBatchStream>()?;

    // Register `common` as a submodule. Matching `datafusion-common` https://docs.rs/datafusion-common/latest/datafusion_common/
    let common = PyModule::new_bound(py, "common")?;
    common::init_module(&common)?;
    m.add_submodule(&common)?;

    // Register `expr` as a submodule. Matching `datafusion-expr` https://docs.rs/datafusion-expr/latest/datafusion_expr/
    let expr = PyModule::new_bound(py, "expr")?;
    expr::init_module(&expr)?;
    m.add_submodule(&expr)?;

    // Register the functions as a submodule
    let funcs = PyModule::new_bound(py, "functions")?;
    functions::init_module(&funcs)?;
    m.add_submodule(&funcs)?;

    let store = PyModule::new_bound(py, "object_store")?;
    store::init_module(&store)?;
    m.add_submodule(&store)?;

    // Register substrait as a submodule
    #[cfg(feature = "substrait")]
    setup_substrait_module(py, &m)?;

    Ok(())
}

#[cfg(feature = "substrait")]
fn setup_substrait_module(py: Python, m: &Bound<'_, PyModule>) -> PyResult<()> {
    let substrait = PyModule::new_bound(py, "substrait")?;
    substrait::init_module(&substrait)?;
    m.add_submodule(&substrait)?;
    Ok(())
}