Enum ExpectedRevision 

pub enum ExpectedRevision {
    Exactly(Revision),
    Absent,
}

A precondition on one document’s live revision, checked atomically with the batch that carries it.

Conditions are evaluated by the single writer against the latest committed state (active rows and sealed segments) as it was before the batch. A tombstoned id has no live document, so it matches Self::Absent.

Variants

Exactly(Revision)

A live document exists and its revision is exactly this value.

Absent

No live document exists: the id was never written or was deleted.

Trait Implementations

impl Clone for ExpectedRevision

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ExpectedRevision

impl Debug for ExpectedRevision

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

Formats the value using the given formatter.

impl Eq for ExpectedRevision

impl Hash for ExpectedRevision

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ExpectedRevision

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ExpectedRevision