Struct RowVersion 

pub struct RowVersion {
    pub id: u64,
    pub row: Row,
    pub btree_resident: bool,
    /* private fields */
}

A row version.

Fields

id: u64

Unique identifier for this version within the MvStore. Used for savepoint tracking to identify specific versions to rollback.

row: Row

btree_resident: bool

Indicates this version was created for a row that existed in B-tree before MVCC was enabled (e.g., after switching from WAL to MVCC journal mode). This flag helps the checkpoint logic determine if a delete should be checkpointed to the B-tree file.

Implementations

impl RowVersion

pub fn new( id: u64, begin: Option<TxTimestampOrID>, end: Option<TxTimestampOrID>, row: Row, btree_resident: bool, ) -> Self

Construct a row version. begin/end are bit-packed internally.

pub fn begin(&self) -> Option<TxTimestampOrID>

The begin timestamp/tx-id, or None.

pub fn end(&self) -> Option<TxTimestampOrID>

The end timestamp/tx-id, or None.

pub fn set_begin(&mut self, value: Option<TxTimestampOrID>)

pub fn set_end(&mut self, value: Option<TxTimestampOrID>)

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.

impl PartialEq for RowVersion

fn eq(&self, other: &RowVersion) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for RowVersion