Struct TransactionalKeyspace

pub struct TransactionalKeyspace { /* private fields */ }

Transactional keyspace

Implementations

impl TransactionalKeyspace

pub fn write_tx(&self) -> WriteTransaction<'_>

Starts a new writeable transaction.

pub fn read_tx(&self) -> ReadTransaction

Starts a new read-only transaction.

pub fn persist(&self, mode: PersistMode) -> Result<()>

Flushes the active journal. The durability depends on the PersistMode used.

Persisting only affects durability, NOT consistency! Even without flushing data is crash-safe.

Examples

let keyspace = Config::new(folder).open_transactional()?;
let items = keyspace.open_partition("my_items", PartitionCreateOptions::default())?;

items.insert("a", "hello")?;

keyspace.persist(PersistMode::SyncAll)?;

Errors

Returns error, if an IO error occurred.

pub fn open_partition( &self, name: &str, create_options: PartitionCreateOptions, ) -> Result<TxPartitionHandle>

Creates or opens a keyspace partition.

Errors

Returns error, if an IO error occurred.

Panics

Panics if the partition name includes characters other than: a-z A-Z 0-9 _ -

pub fn partition_count(&self) -> usize

Returns the amount of partitions

pub fn list_partitions(&self) -> Vec<StrView>

Gets a list of all partition names in the keyspace

pub fn partition_exists(&self, name: &str) -> bool

Returns true if the partition with the given name exists.

pub fn delete_partition(&self, handle: TxPartitionHandle) -> Result<()>

Destroys the partition, removing all data associated with it.

Errors

Will return Err if an IO error occurs.

pub fn write_buffer_size(&self) -> u64

Returns the current write buffer size (active + sealed memtables).

pub fn journal_count(&self) -> usize

Returns the amount of journals on disk.

pub fn disk_space(&self) -> u64

Returns the disk space usage of the entire keyspace.

pub fn open(config: Config) -> Result<Self>

Opens a keyspace in the given directory.

Errors

Returns error, if an IO error occurred.

Trait Implementations

impl Clone for TransactionalKeyspace

fn clone(&self) -> TransactionalKeyspace

Returns a copy of the value.

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

Performs copy-assignment from source.