Struct SessionTransactionManager 

pub struct SessionTransactionManager { /* private fields */ }

Manager for session transaction state.

Each session has its own SessionTransactionManager to track its transaction state independently of other sessions.

Implementations

impl SessionTransactionManager

pub fn new() -> Self

Create a new session transaction manager.

pub fn begin(&mut self) -> Result<u64, TransactionError>

Begin a new transaction.

Returns an error if a transaction is already active.

pub fn commit(&mut self) -> Result<Vec<TransactionChange>, TransactionError>

Commit the current transaction.

Returns the changes to be applied to the shared database.

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

Rollback the current transaction.

Discards all uncommitted changes.

pub fn in_transaction(&self) -> bool

Check if a transaction is currently active.

pub fn transaction_id(&self) -> Option<u64>

Get the current transaction ID, if any.

pub fn current_mut(&mut self) -> Option<&mut TransactionState>

Get mutable access to the current transaction state.

pub fn current(&self) -> Option<&TransactionState>

Get read access to the current transaction state.

pub fn record_insert(&mut self, table_name: String, row: Row)

Record an insert in the current transaction.

No-op if not in a transaction.

pub fn record_update( &mut self, table_name: String, row_index: usize, old_row: Row, new_row: Row, )

Record an update in the current transaction.

No-op if not in a transaction.

pub fn record_delete(&mut self, table_name: String, row_index: usize, row: Row)

Record a delete in the current transaction.

No-op if not in a transaction.

Trait Implementations

impl Debug for SessionTransactionManager

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SessionTransactionManager

fn default() -> SessionTransactionManager

Returns the “default value” for a type.