Module executor 

SQL Executor module for Alopex SQL.

This module provides the execution engine for SQL statements.

Overview

The Executor takes a LogicalPlan from the Planner and executes it against the storage layer. It supports DDL, DML, and Query operations.

Query execution currently materializes intermediate results per stage; future versions may add streaming pipelines as requirements grow.

Components

• Executor: Main executor struct
• ExecutorError: Error types for execution
• ExecutionResult: Execution result types

Example

use std::sync::{Arc, RwLock};
use alopex_core::kv::memory::MemoryKV;
use alopex_sql::executor::Executor;
use alopex_sql::catalog::MemoryCatalog;
use alopex_sql::planner::LogicalPlan;

// Create storage and catalog
let store = Arc::new(MemoryKV::new());
let catalog = Arc::new(RwLock::new(MemoryCatalog::new()));

// Create executor
let mut executor = Executor::new(store, catalog);

// Execute a plan
let result = executor.execute(plan)?;

Re-exports

pub use query::RowIterator;

pub use query::ScanIterator;

pub use query::build_streaming_pipeline;

Modules

bulk

COPY / Bulk Load 実装。

evaluator

Expression evaluator for typed expressions.

query

Structs

ColumnInfo

Column information for query results.

Executor

SQL statement executor.

QueryResult

Result of a SELECT query.

QueryRowIterator

Streaming query result that yields rows one at a time.

Row

Internal row representation with row_id for DML operations.

Enums

ConstraintViolation

Constraint violation details.

EvaluationError

Expression evaluation errors.

ExecutionResult

Result of executing a SQL statement.

ExecutorError

Errors that can occur during SQL execution.

Type Aliases

Result

Type alias for executor results.