Struct Storage

pub struct Storage;

Trait Implementations

impl<'a, K, V> AsIterator<'a, K, V> for Storage

type AsIter = StorageIterator<K, V>

Type to iterate through the <K, V> collection.

fn iter(&'a self) -> Result<Self::AsIter, Self::Error>

Returns a Iterator object for the provided <K, V> collection.

impl<K, V> Batch<K, V> for Storage

fn batch_insert( &self, _batch: &mut Self::Batch, _key: &K, _value: &V, ) -> Result<(), Self::Error>

Add Insert batch operation for the provided key value pair into the Batch memory buffer.

fn batch_delete( &self, _batch: &mut Self::Batch, _key: &K, ) -> Result<(), Self::Error>

Add Delete batch operation for the provided key value pair into the Batch memory buffer.

impl BatchBuilder for Storage

type Batch = StorageBatch

Type that acts like a memory buffer which queue all the write operations.

fn batch_commit( &self, _batch: Self::Batch, _durability: bool, ) -> Result<(), Self::Error>

Takes ownership of a batch object in order to commit it to the backend. Durability argument determines if the batch needs to be logged into a write ahead log or not.

fn batch_begin() -> Self::Batch

Creates and returns the constraint Batch object.

impl<K, V> Delete<K, V> for Storage

fn delete(&self, _key: &K) -> Result<(), Self::Error>

Deletes the value associated with the key from the storage.

impl<K, V> Exist<K, V> for Storage

fn exist(&self, _key: &K) -> Result<bool, Self::Error>

Checks if a value exists in the storage for the given key.

impl<K, V> Fetch<K, V> for Storage

fn fetch(&self, _key: &K) -> Result<Option<V>, Self::Error>

Fetches the value associated with the key from the storage.

impl<K, V> Insert<K, V> for Storage

fn insert(&self, _key: &K, _value: &V) -> Result<(), Self::Error>

Inserts the (K, V) pair in the storage.

impl<'a, K: 'a, V: 'a> MultiFetch<'a, K, V> for Storage

type Iter = MultiIter<K, V>

The iterator associated type over values.

fn multi_fetch(&'a self, _keys: &'a [K]) -> Result<Self::Iter, Self::Error>

Fetches the values associated with the keys from the storage.

impl StorageBackend for Storage

type ConfigBuilder = ()

Helps build the associated Config.

type Config = ()

Holds the backend options.

type Error = Infallible

Returned on failed operations.

fn start(_config: Self::Config) -> Result<Self, Self::Error>

Initializes and starts the backend.

fn shutdown(self) -> Result<(), Self::Error>

Shutdowns the backend.

fn size(&self) -> Result<Option<usize>, Self::Error>

Returns the size of the database in bytes. Not all backends may be able to provide this operation.

fn get_health(&self) -> Result<Option<StorageHealth>, Self::Error>

Returns the health status of the database. Not all backends may be able to provide this operation.

fn set_health(&self, _health: StorageHealth) -> Result<(), Self::Error>

Sets the health status of the database. Not all backends may be able to provide this operation.

impl<K, V> Truncate<K, V> for Storage

fn truncate(&self) -> Result<(), Self::Error>

Truncates all the entries associated with the (K, V) pair from the storage.