Struct XactView 

pub struct XactView<'a> {
    pub current: Option<u64>,
    pub active: &'a BTreeSet<u64>,
    pub aborted: &'a BTreeSet<u64>,
}

v7.38 (T24) — the transaction-id surface PG’s txid_* family exposes. SPG’s writer versions ARE its transaction ids (row_header::next_version), so no separate xid counter is needed — this is the bridge U22 was waiting on.

Fields

current: Option<u64>

The id assigned to the current transaction (allocated at BEGIN) or, in autocommit, to the current statement once it has written. None when nothing has been assigned — *_if_assigned returns NULL there, as PG does.

active: &'a BTreeSet<u64>

Ids allocated by transactions that have neither committed nor aborted.

aborted: &'a BTreeSet<u64>

Ids of rolled-back transactions.

Trait Implementations

impl<'a> Clone for XactView<'a>

fn clone(&self) -> XactView<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for XactView<'a>

impl<'a> Debug for XactView<'a>

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

Formats the value using the given formatter.