Struct Executor 

pub struct Executor<S: KVStore, C: Catalog> { /* private fields */ }

SQL statement executor.

The Executor takes a LogicalPlan and executes it against the storage layer. It manages transactions and coordinates between DDL, DML, and Query operations.

Type Parameters

• S: The underlying KV store type (must implement KVStore)
• C: The catalog type (must implement Catalog)

Implementations

impl<S: KVStore, C: Catalog> Executor<S, C>

pub fn new(store: Arc<S>, catalog: Arc<RwLock<C>>) -> Self

Create a new Executor with the given store and catalog.

Arguments

• store: The underlying KV store
• catalog: The catalog for metadata operations

pub fn execute(&mut self, plan: LogicalPlan) -> Result<ExecutionResult>

Execute a logical plan and return the result.

Arguments

• plan: The logical plan to execute

Returns

Returns an ExecutionResult on success, or an ExecutorError on failure.

DDL Operations

• CreateTable: Creates a new table with optional PK index
• DropTable: Drops a table and its associated indexes
• CreateIndex: Creates a new index
• DropIndex: Drops an index

DML Operations

• Insert: Inserts rows into a table
• Update: Updates rows in a table
• Delete: Deletes rows from a table

Query Operations

• Scan, Filter, Sort, Limit: SELECT query execution

impl<S: KVStore> Executor<S, PersistentCatalog<S>>

pub fn execute_in_txn<'a, 'b, 'c>( &mut self, plan: LogicalPlan, txn: &mut BorrowedSqlTransaction<'a, 'b, 'c, S>, ) -> Result<ExecutionResult>