common_function/
function_registry.rs

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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
// Copyright 2023 Greptime Team
//
// Licensed 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.

//! functions registry
use std::collections::HashMap;
use std::sync::{Arc, RwLock};

use once_cell::sync::Lazy;

use crate::function::{AsyncFunctionRef, FunctionRef};
use crate::scalars::aggregate::{AggregateFunctionMetaRef, AggregateFunctions};
use crate::scalars::date::DateFunction;
use crate::scalars::expression::ExpressionFunction;
use crate::scalars::json::JsonFunction;
use crate::scalars::matches::MatchesFunction;
use crate::scalars::math::MathFunction;
use crate::scalars::numpy::NumpyFunction;
use crate::scalars::timestamp::TimestampFunction;
use crate::scalars::vector::VectorFunction;
use crate::system::SystemFunction;
use crate::table::TableFunction;

#[derive(Default)]
pub struct FunctionRegistry {
    functions: RwLock<HashMap<String, FunctionRef>>,
    async_functions: RwLock<HashMap<String, AsyncFunctionRef>>,
    aggregate_functions: RwLock<HashMap<String, AggregateFunctionMetaRef>>,
}

impl FunctionRegistry {
    pub fn register(&self, func: FunctionRef) {
        let _ = self
            .functions
            .write()
            .unwrap()
            .insert(func.name().to_string(), func);
    }

    pub fn register_async(&self, func: AsyncFunctionRef) {
        let _ = self
            .async_functions
            .write()
            .unwrap()
            .insert(func.name().to_string(), func);
    }

    pub fn get_async_function(&self, name: &str) -> Option<AsyncFunctionRef> {
        self.async_functions.read().unwrap().get(name).cloned()
    }

    pub fn async_functions(&self) -> Vec<AsyncFunctionRef> {
        self.async_functions
            .read()
            .unwrap()
            .values()
            .cloned()
            .collect()
    }

    pub fn register_aggregate_function(&self, func: AggregateFunctionMetaRef) {
        let _ = self
            .aggregate_functions
            .write()
            .unwrap()
            .insert(func.name(), func);
    }

    pub fn get_aggr_function(&self, name: &str) -> Option<AggregateFunctionMetaRef> {
        self.aggregate_functions.read().unwrap().get(name).cloned()
    }

    pub fn get_function(&self, name: &str) -> Option<FunctionRef> {
        self.functions.read().unwrap().get(name).cloned()
    }

    pub fn functions(&self) -> Vec<FunctionRef> {
        self.functions.read().unwrap().values().cloned().collect()
    }

    pub fn aggregate_functions(&self) -> Vec<AggregateFunctionMetaRef> {
        self.aggregate_functions
            .read()
            .unwrap()
            .values()
            .cloned()
            .collect()
    }
}

pub static FUNCTION_REGISTRY: Lazy<Arc<FunctionRegistry>> = Lazy::new(|| {
    let function_registry = FunctionRegistry::default();

    // Utility functions
    MathFunction::register(&function_registry);
    NumpyFunction::register(&function_registry);
    TimestampFunction::register(&function_registry);
    DateFunction::register(&function_registry);
    ExpressionFunction::register(&function_registry);

    // Aggregate functions
    AggregateFunctions::register(&function_registry);

    // Full text search function
    MatchesFunction::register(&function_registry);

    // System and administration functions
    SystemFunction::register(&function_registry);
    TableFunction::register(&function_registry);

    // Json related functions
    JsonFunction::register(&function_registry);

    // Vector related functions
    VectorFunction::register(&function_registry);

    // Geo functions
    #[cfg(feature = "geo")]
    crate::scalars::geo::GeoFunctions::register(&function_registry);

    Arc::new(function_registry)
});

#[cfg(test)]
mod tests {
    use super::*;
    use crate::scalars::test::TestAndFunction;

    #[test]
    fn test_function_registry() {
        let registry = FunctionRegistry::default();
        let func = Arc::new(TestAndFunction);

        assert!(registry.get_function("test_and").is_none());
        assert!(registry.functions().is_empty());
        registry.register(func);
        let _ = registry.get_function("test_and").unwrap();
        assert_eq!(1, registry.functions().len());
    }
}