Struct RowVersion 

pub struct RowVersion {
    pub begin: TxTimestampOrId,
    pub end: Option<TxTimestampOrId>,
    pub payload: VersionPayload,
}

One link in a row’s version chain.

Visibility under snapshot isolation is the textbook rule the Hekaton paper formalises and Turso’s MVCC implements:

• begin <= T: the version was committed at or before the reader’s begin-timestamp. (For an in-flight version begin = Id(tx), only the producing transaction can see it.)
• end > T or end is None: the version hasn’t been superseded yet from the reader’s point of view.

Both conditions must hold. See MvStore::visible_at.

Fields

begin: TxTimestampOrId

end: Option<TxTimestampOrId>

payload: VersionPayload

Implementations

impl RowVersion

pub fn committed(commit_ts: u64, payload: VersionPayload) -> Self

Builds a freshly-committed version at commit_ts with no end (i.e. currently latest). This is the shape the legacy commit path produces in 11.4 when it mirrors a row write.

pub fn in_flight(tx_id: TxId, payload: VersionPayload) -> Self

Builds an in-flight version owned by tx_id. v0 tests use this to construct chains by hand; the production write path (11.4) will own it.

Trait Implementations

impl Clone for RowVersion

fn clone(&self) -> RowVersion

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RowVersion

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

Formats the value using the given formatter.