Struct VersionInfo 

pub struct VersionInfo {
    pub created_epoch: EpochId,
    pub deleted_epoch: Option<EpochId>,
    pub created_by: TxId,
}

Visibility information for a version.

Fields

created_epoch: EpochId

The epoch this version was created in.

deleted_epoch: Option<EpochId>

The epoch this version was deleted in (if any).

created_by: TxId

The transaction that created this version.

Implementations

impl VersionInfo

pub fn new(created_epoch: EpochId, created_by: TxId) -> VersionInfo

Creates a new version info.

pub fn mark_deleted(&mut self, epoch: EpochId)

Marks this version as deleted.

pub fn is_visible_at(&self, epoch: EpochId) -> bool

Checks if this version is visible at the given epoch.

pub fn is_visible_to(&self, viewing_epoch: EpochId, viewing_tx: TxId) -> bool

Checks if this version is visible to a specific transaction.

A version is visible to a transaction if:

1. It was created by the same transaction, OR
2. It was created in an epoch before the transaction’s start epoch and not deleted before that epoch

Trait Implementations

impl Clone for VersionInfo

fn clone(&self) -> VersionInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VersionInfo

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

Formats the value using the given formatter.

impl Copy for VersionInfo