Struct SerializableReadContext 

pub struct SerializableReadContext { /* private fields */ }

A retained reader attributes observations to its original transaction, even after session refresh or nested view cloning. This does not create another participant or give the reader ownership of transaction completion.

Implementations

impl SerializableReadContext

pub fn id(&self) -> SerializableTransactionId

pub fn read_control( &self, cancellation: &CancellationToken, ) -> StorageReadControl

Retain the original session’s allowance while observing cancellation from the invoking reader. Cloning a context or attaching a nested reader does not grant another observation budget.

pub fn observe_read( &self, predicate: SerializablePredicate<'_>, control: &StorageReadControl, ) -> VersionResult<()>

Observe the logical predicate before exposing its result, including an empty, cached or index-only result. Proven safe snapshots need only the original participant’s lifetime check. Physical record keys are not a substitute for logical object/row/index identities.

pub fn safe_snapshot( &self, control: &StorageReadControl, ) -> VersionResult<SafeSnapshot>

Trait Implementations

impl Clone for SerializableReadContext

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.