Enum Op 

pub enum Op {
    Put(Vec<u8>, Vec<u8>),
    Del(Vec<u8>),
    Set(Vec<u8>, Vec<u8>),
    Purge(Vec<u8>),
}

Operation emitted into the atomic publish set.

Variants

Put(Vec<u8>, Vec<u8>)

Insert or overwrite a key, retaining the superseded value as history.

Del(Vec<u8>)

Remove a key, retaining the removed value as history.

Set(Vec<u8>, Vec<u8>)

Overwrite a key without retaining a superseded version (and drop any history already accumulated for it). Used for internal bookkeeping keys whose values are not part of user-visible time travel: counters, allocation watermarks, degree counters, the label catalog and the commit watermark. Without this, every overwrite of a hot counter rewrites its whole history vector, which is quadratic in the number of writes.

Purge(Vec<u8>)

Erase a key together with its current-value MVCC metadata and retained history, without appending a new version. Destructive by design: used by tenant purge, where the values are intentionally destroyed and keeping versions for them would bloat storage without bound.

Implementations

impl Op

pub fn encoded_len(&self) -> usize

Approximate encoded size (key + value bytes) for group-commit byte accounting (P04 bounded writer).

Trait Implementations

impl Clone for Op

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Op

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

Formats the value using the given formatter.

impl Eq for Op

impl PartialEq for Op

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Op