Struct PrefixedKVStore 

pub struct PrefixedKVStore<S: KVStore> { /* private fields */ }

Wrapper that logically behaves as a key-value store whose keys are always prefixed by prefix.

Implementations

impl<S: KVStore> PrefixedKVStore<S>

pub fn new(inner: S, prefix: Key) -> Self

Trait Implementations

impl<S: KVStore> KVStore for PrefixedKVStore<S>

fn get(&self, key: Key) -> Result<Option<Value>, KVStoreError>

Retrieve the value mapped from the given key.

fn contains(&self, key: Key) -> bool

Check the existence of the given key

fn atomic_write<'a>( &'a self, changes: Box<dyn Iterator<Item = (Key, Option<Value>)> + 'a>, ) -> Result<(), KVStoreError>

Write a batch of updates with atomicity to the store. Any changes written should be immediately visible in Self::get.