Enum txn_types::Mutation

pub enum Mutation {
    Put((Key, Value)),
    Delete(Key),
    Lock(Key),
    Insert((Key, Value)),
    CheckNotExists(Key),
}

A row mutation.

Variants

Put((Key, Value))

Put Value into Key, overwriting any existing value.

Delete(Key)

Delete Key.

Lock(Key)

Set a lock on Key.

Insert((Key, Value))

Put Value into Key if Key does not yet exist.

Returns kvrpcpb::KeyError::AlreadyExists if the key already exists.

CheckNotExists(Key)

Check key must be not exist.

Returns kvrpcpb::KeyError::AlreadyExists if the key already exists.

Implementations

impl Mutation

pub fn key(&self) -> &Key

pub fn mutation_type(&self) -> MutationType

pub fn into_key_value(self) -> (Key, Option<Value>)

pub fn should_not_exists(&self) -> bool

pub fn should_not_write(&self) -> bool

Trait Implementations

impl Clone for Mutation

fn clone(&self) -> Mutation

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Mutation

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

Formats the value using the given formatter.

impl From<Mutation> for Mutation

fn from(m: Mutation) -> Mutation

Performs the conversion.