Struct Planner 

pub struct Planner { /* private fields */ }

Converts a logical plan to a physical operator tree.

Implementations

impl Planner

pub fn new(store: Arc<LpgStore>) -> Self

Creates a new planner with the given store.

This creates a planner without transaction context, using the current epoch from the store for visibility.

pub fn with_context( store: Arc<LpgStore>, tx_manager: Arc<TransactionManager>, tx_id: Option<TxId>, viewing_epoch: EpochId, ) -> Self

Creates a new planner with transaction context for MVCC-aware planning.

Arguments

• store - The graph store
• tx_manager - Transaction manager for recording reads/writes
• tx_id - Current transaction ID (None for auto-commit)
• viewing_epoch - Epoch to use for version visibility

pub fn viewing_epoch(&self) -> EpochId

Returns the viewing epoch for this planner.

pub fn tx_id(&self) -> Option<TxId>

Returns the transaction ID for this planner, if any.

pub fn tx_manager(&self) -> Option<&Arc<TransactionManager>>

Returns a reference to the transaction manager, if available.

pub fn plan(&self, logical_plan: &LogicalPlan) -> Result<PhysicalPlan>

Plans a logical plan into a physical operator.

Errors

Returns an error if planning fails.