Struct VersionedValue 

pub struct VersionedValue {
    pub value: Option<Vec<u8>>,
    pub txn_id: TransactionId,
    pub created_at: Timestamp,
    pub deleted_at: Option<Timestamp>,
    pub committed: bool,
}

A versioned value in MVCC

Fields

value: Option<Vec<u8>>

The actual value

txn_id: TransactionId

Transaction ID that created this version

created_at: Timestamp

Timestamp when this version was created

deleted_at: Option<Timestamp>

Timestamp when this version was deleted (None if still valid)

committed: bool

Whether this version is committed

Implementations

impl VersionedValue

pub fn is_visible( &self, snapshot_ts: Timestamp, current_txn_id: TransactionId, ) -> bool

Check if this version is visible to a transaction with given snapshot timestamp

Trait Implementations

impl Clone for VersionedValue

fn clone(&self) -> VersionedValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VersionedValue

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

Formats the value using the given formatter.