kotoba_execution/
lib.rs

1//! kotoba-execution - Kotoba Execution Components
2
3pub mod execution;
4
5use crate::execution::physical_plan::PhysicalPlan;
6use crate::execution::metrics::ExecutionMetrics;
7// use kotoba_core::types::{Result, Value}; // Avoid conflicts with our custom Result type
8use kotoba_core::types::Value;
9use kotoba_errors::KotobaError;
10
11// Use std::result::Result instead of kotoba_core::types::Result to avoid conflicts
12type Result<T> = std::result::Result<T, Box<dyn std::error::Error + Send + Sync>>;
13
14#[async_trait::async_trait]
15pub trait QueryExecutor: Send + Sync {
16    async fn execute(&self, plan: PhysicalPlan) -> Result<Vec<Value>>;
17}
18
19pub struct DefaultQueryExecutor {
20    // ... fields
21}
22
23impl DefaultQueryExecutor {
24    pub fn new() -> Self {
25        Self { /* ... */ }
26    }
27}
28
29#[async_trait::async_trait]
30impl QueryExecutor for DefaultQueryExecutor {
31    async fn execute(&self, plan: PhysicalPlan) -> Result<Vec<Value>> {
32        let mut metrics = ExecutionMetrics::new();
33        // ... implementation ...
34        Ok(vec![])
35    }
36}
37
38pub mod planner;
39pub mod prelude {
40    // Re-export commonly used items
41    pub use crate::execution::*;
42    pub use crate::planner::*;
43    // Avoid re-exporting duplicate types
44    // PhysicalPlan and PhysicalOp are available through both execution and planner
45}
46
47#[cfg(test)]
48mod tests {
49    use super::*;
50    use crate::prelude::*;
51    use kotoba_core::{types::*, ir::*};
52    use std::collections::HashMap;
53
54    #[test]
55    fn test_query_executor_creation() {
56        let executor = QueryExecutor::new();
57        // Just check that it can be created
58        assert!(true);
59    }
60
61    #[test]
62    fn test_gql_parser_creation() {
63        let parser = GqlParser::new();
64        // Just check that it can be created
65        assert!(true);
66    }
67
68    #[test]
69    fn test_gql_parser_tokenize() {
70        let mut parser = GqlParser::new();
71        let result = parser.parse("MATCH (n:Person) RETURN n");
72        // For now, just check that parsing doesn't panic
73        // TODO: Add proper test cases once implementation is complete
74        assert!(result.is_ok() || result.is_err()); // Accept both for now
75    }
76
77    #[test]
78    fn test_expression_evaluation() {
79        use execution::executor::QueryExecutor;
80        let executor = QueryExecutor::new();
81
82        // Create a test row
83        let mut row_data = HashMap::new();
84        row_data.insert("name".to_string(), Value::String("Alice".to_string()));
85        row_data.insert("age".to_string(), Value::Int(30));
86        let row = Row { values: row_data };
87
88        // Test variable evaluation
89        let expr = Expr::Var("name".to_string());
90        let result = executor.evaluate_expr(&row, &expr);
91        assert!(result.is_ok());
92        assert_eq!(result.unwrap(), Value::String("Alice".to_string()));
93
94        // Test constant evaluation
95        let expr = Expr::Const(Value::Int(42));
96        let result = executor.evaluate_expr(&row, &expr);
97        assert!(result.is_ok());
98        assert_eq!(result.unwrap(), Value::Int(42));
99    }
100
101    #[test]
102    fn test_math_functions() {
103        use execution::executor::QueryExecutor;
104        let executor = QueryExecutor::new();
105
106        let row = Row { values: HashMap::new() };
107
108        // Test abs function
109        let expr = Expr::Fn {
110            fn_: "abs".to_string(),
111            args: vec![Expr::Const(Value::Int(-5))],
112        };
113        let result = executor.evaluate_expr(&row, &expr);
114        assert!(result.is_ok());
115        assert_eq!(result.unwrap(), Value::Int(5));
116
117        // Test sqrt function
118        let expr = Expr::Fn {
119            fn_: "sqrt".to_string(),
120            args: vec![Expr::Const(Value::Int(9))],
121        };
122        let result = executor.evaluate_expr(&row, &expr);
123        assert!(result.is_ok());
124        assert_eq!(result.unwrap(), Value::Int(3));
125    }
126
127    #[test]
128    fn test_string_functions() {
129        use execution::executor::QueryExecutor;
130        let executor = QueryExecutor::new();
131
132        let row = Row { values: HashMap::new() };
133
134        // Test length function
135        let expr = Expr::Fn {
136            fn_: "length".to_string(),
137            args: vec![Expr::Const(Value::String("hello".to_string()))],
138        };
139        let result = executor.evaluate_expr(&row, &expr);
140        assert!(result.is_ok());
141        assert_eq!(result.unwrap(), Value::Int(5));
142
143        // Test toUpper function
144        let expr = Expr::Fn {
145            fn_: "toUpper".to_string(),
146            args: vec![Expr::Const(Value::String("hello".to_string()))],
147        };
148        let result = executor.evaluate_expr(&row, &expr);
149        assert!(result.is_ok());
150        assert_eq!(result.unwrap(), Value::String("HELLO".to_string()));
151    }
152
153    #[test]
154    fn test_conversion_functions() {
155        use execution::executor::QueryExecutor;
156        let executor = QueryExecutor::new();
157
158        let row = Row { values: HashMap::new() };
159
160        // Test toString function
161        let expr = Expr::Fn {
162            fn_: "toString".to_string(),
163            args: vec![Expr::Const(Value::Int(42))],
164        };
165        let result = executor.evaluate_expr(&row, &expr);
166        assert!(result.is_ok());
167        assert_eq!(result.unwrap(), Value::String("42".to_string()));
168
169        // Test toInteger function
170        let expr = Expr::Fn {
171            fn_: "toInteger".to_string(),
172            args: vec![Expr::Const(Value::String("123".to_string()))],
173        };
174        let result = executor.evaluate_expr(&row, &expr);
175        assert!(result.is_ok());
176        assert_eq!(result.unwrap(), Value::Int(123));
177    }
178}
kotoba_execution/lib.rs

kotoba_execution/
lib.rs
