Struct ckb_db::transaction::RocksDBTransaction

pub struct RocksDBTransaction { /* private fields */ }

An optimistic transaction database.

Implementations

impl RocksDBTransaction

pub fn get(&self, col: Col, key: &[u8]) -> Result<Option<DBVector>>

Return the bytes associated with the given key and given column.

pub fn put(&self, col: Col, key: &[u8], value: &[u8]) -> Result<()>

Write the bytes into the given column with associated key.

pub fn delete(&self, col: Col, key: &[u8]) -> Result<()>

Delete the data associated with the given key and given column.

pub fn get_for_update<'a>(
    &self,
    col: Col,
    key: &[u8],
    snapshot: &RocksDBTransactionSnapshot<'a>
) -> Result<Option<DBVector>>

Read a key and make the read value a precondition for transaction commit.

pub fn commit(&self) -> Result<()>

Commit the transaction.

pub fn rollback(&self) -> Result<()>

Rollback the transaction.

pub fn get_snapshot(&self) -> RocksDBTransactionSnapshot<'_>

Return RocksDBTransactionSnapshot

pub fn set_savepoint(&self)

Set savepoint for transaction.

pub fn rollback_to_savepoint(&self) -> Result<()>

Rollback the transaction to savepoint.

Trait Implementations

impl DBIterator for RocksDBTransaction

fn iter_opt(
    &self,
    col: Col,
    mode: IteratorMode<'_>,
    readopts: &ReadOptions
) -> Result<DBIter<'_>>

Opens an interator using the provided IteratorMode and ReadOptions. This is used when you want to iterate over a specific ColumnFamily with a modified ReadOptions

fn iter(&self, col: Col, mode: IteratorMode<'_>) -> Result<DBIter<'_>>

Opens an interator using the provided IteratorMode. This is used when you want to iterate over a specific ColumnFamily