Enum tikv::storage::txn::TxnEntry

pub enum TxnEntry {
    Prewrite {
        default: KvPair,
        lock: KvPair,
        old_value: Option<Value>,
    },
    Commit {
        default: KvPair,
        write: KvPair,
        old_value: Option<Value>,
    },
}

A transaction entry in underlying storage.

Variants

Prewrite

Fields of Prewrite

default: KvPairlock: KvPairold_value: Option<Value>

Commit

Fields of Commit

default: KvPairwrite: KvPairold_value: Option<Value>

Implementations

impl TxnEntry

pub fn into_kvpair(self) -> Result<(Vec<u8>, Vec<u8>)>

This method will return a kv pair whose content and encode are same as a kv pair reture by StoreScanner::next

pub fn to_key(&self) -> Result<Key>

This method will generate this kv pair’s key

pub fn size(&self) -> usize

Trait Implementations

impl Clone for TxnEntry

fn clone(&self) -> TxnEntry

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TxnEntry

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

Formats the value using the given formatter.

impl PartialEq<TxnEntry> for TxnEntry

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl StructuralPartialEq for TxnEntry