Struct cfx_storage::KvdbRocksdb

pub struct KvdbRocksdb {
    pub kvdb: Arc<Database>,
    pub col: u32,
}

Fields

kvdb: Arc<Database>

col: u32

Trait Implementations

impl Clone for KvdbRocksdb

fn clone(&self) -> KvdbRocksdb

Returns a copy of the value.

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

Performs copy-assignment from source.

impl KeyValueDbTrait for KvdbRocksdb

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

Return Some(maybe_old_value) or None if the db don’t support reading the old value at deletion.

fn put(&self, key: &[u8], value: &[u8]) -> Result<Option<Option<Box<[u8]>>>>

fn delete_with_number_key( &self, key: i64 ) -> Result<Option<Option<Self::ValueType>>>

fn put_with_number_key( &self, key: i64, value: &<Self::ValueType as DbValueType>::Type ) -> Result<Option<Option<Self::ValueType>>>

impl KeyValueDbTraitRead for KvdbRocksdb

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

fn get_with_number_key(&self, key: i64) -> Result<Option<Self::ValueType>>

impl KeyValueDbTraitTransactional for KvdbRocksdb

type TransactionType = KvdbRocksDbTransaction

fn start_transaction( &self, _immediate_write: bool ) -> Result<Self::TransactionType>

Immediate_write indicates whether the transaction should acquire a write-lock immediately if any.

impl KeyValueDbTypes for KvdbRocksdb

type ValueType = Box<[u8]>

impl MallocSizeOf for KvdbRocksdb

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.

impl OwnedReadImplFamily for &KvdbRocksdb

type FamilyRepresentative = dyn KeyValueDbTraitMultiReader<ValueType = <KvdbRocksdb as KeyValueDbTypes>::ValueType>

impl DeltaDbTrait for KvdbRocksdb

impl KeyValueDbTraitMultiReader for KvdbRocksdb