Struct RocksDbOptimisticColumn 

pub struct RocksDbOptimisticColumn { /* private fields */ }

A RocksDB database column family.

Implementations

impl RocksDbOptimisticColumn

pub fn try_new(env: Env<RocksDbOptimistic>, name: String) -> Result<Self>

Trait Implementations

impl DBColumn for RocksDbOptimisticColumn

fn set(&self, key: impl AsRef<[u8]>, val: impl AsRef<[u8]>) -> Result<()>

Set a key-value pair.

fn get(&self, key: impl AsRef<[u8]>) -> Result<Option<Vec<u8>>>

Get a value by key.

fn contains(&self, key: impl AsRef<[u8]>) -> Result<bool>

Check if a key exists.

fn delete(&self, key: impl AsRef<[u8]>) -> Result<()>

Delete a key-value pair.

fn get_multi<I>(&self, keys: I) -> Result<Vec<Option<Vec<u8>>>>

where I: IntoIterator, I::Item: AsRef<[u8]>,

Get a value by key in batch.

fn set_nx( &self, key: impl AsRef<[u8]>, val: impl AsRef<[u8]>, ) -> Result<bool, Error>

Set a key-value pair if the key does not exist.

impl DBColumnDelete for RocksDbOptimisticColumn

fn delete_db(&self) -> Result<()>

Delete the database. Note that this will delete all data in the database. After calling this method, the database should not be used anymore or it will panic.

impl DBColumnIterator for RocksDbOptimisticColumn

fn iter( &self, ) -> Result<Box<dyn Iterator<Item = Result<(Vec<u8>, Vec<u8>)>> + '_>>

Create a new iterator.

impl DBColumnIteratorPrefix for RocksDbOptimisticColumn

fn iter_prefix( &self, prefix: impl AsRef<[u8]>, ) -> Result<Box<dyn Iterator<Item = Result<(Vec<u8>, Vec<u8>)>> + '_>>

Create a new iterator.

impl<'c> DBColumnRef<'c> for RocksDbOptimisticColumn

type Ref = DBPinnableSlice<'c>

The type of the ‘column’, this is a reference to a database.

fn get_ref(&'c self, key: impl AsRef<[u8]>) -> Result<Option<Self::Ref>>

Get a value by key.

impl<'a> DBColumnTransaction<'a> for RocksDbOptimisticColumn

type Txn = RocksDBTransaction<'a, DBCommon<MultiThreaded, OptimisticTransactionDBInner>>

fn transaction(&'a self) -> Result<Self::Txn>

Start a transaction.