Struct WriteTxn 

pub struct WriteTxn { /* private fields */ }

Explicit write transaction handle.

A transaction stages logical graph intents locally. Staging, rollback, and bounded reads do not append WAL records or mutate live engine state.

Implementations

impl WriteTxn

pub fn upsert_node<L>( &mut self, labels: L, key: &str, options: UpsertNodeOptions, ) -> Result<TxnNodeRef, EngineError>

where L: IntoNodeLabels,

pub fn upsert_node_as<L>( &mut self, alias: &str, labels: L, key: &str, options: UpsertNodeOptions, ) -> Result<TxnNodeRef, EngineError>

where L: IntoNodeLabels,

pub fn add_node_label( &mut self, target: TxnNodeRef, label: &str, ) -> Result<bool, EngineError>

pub fn remove_node_label( &mut self, target: TxnNodeRef, label: &str, ) -> Result<bool, EngineError>

pub fn upsert_edge( &mut self, from: TxnNodeRef, to: TxnNodeRef, label: &str, options: UpsertEdgeOptions, ) -> Result<TxnEdgeRef, EngineError>

pub fn upsert_edge_as( &mut self, alias: &str, from: TxnNodeRef, to: TxnNodeRef, label: &str, options: UpsertEdgeOptions, ) -> Result<TxnEdgeRef, EngineError>

pub fn delete_node(&mut self, target: TxnNodeRef) -> Result<(), EngineError>

pub fn delete_edge(&mut self, target: TxnEdgeRef) -> Result<(), EngineError>

pub fn invalidate_edge( &mut self, target: TxnEdgeRef, valid_to: i64, ) -> Result<(), EngineError>

pub fn stage_intents( &mut self, intents: Vec<TxnIntent>, ) -> Result<(), EngineError>

pub fn get_node( &self, target: TxnNodeRef, ) -> Result<Option<TxnNodeView>, EngineError>

pub fn get_edge( &self, target: TxnEdgeRef, ) -> Result<Option<TxnEdgeView>, EngineError>

pub fn get_node_by_key( &self, label: &str, key: &str, ) -> Result<Option<TxnNodeView>, EngineError>

pub fn get_edge_by_triple( &self, from: TxnNodeRef, to: TxnNodeRef, label: &str, ) -> Result<Option<TxnEdgeView>, EngineError>

pub fn commit(&mut self) -> Result<TxnCommitResult, EngineError>

pub fn rollback(&mut self) -> Result<(), EngineError>