Trait KVStore 

pub trait KVStore<K: U64 = u64, V: Serialize + DeserializeOwned + Clone = Properties>: Clone {
    // Required methods
    fn new(name: Option<&str>) -> Self;
    fn len(&self) -> u64;
    fn is_empty(&self) -> bool;
    fn get(&self, key: K) -> Option<&V>;
    fn get_mut(&mut self, key: K) -> Option<&mut V>;
    fn set(&mut self, key: K, value: V);
    fn has(&self, key: K) -> bool;
    fn iter<'a>(&'a self) -> impl Iterator<Item = (&'a K, &'a V)>
       where K: 'a,
             V: 'a;
    fn iter_mut<'a>(&'a mut self) -> impl Iterator<Item = (&'a K, &'a mut V)>
       where K: 'a,
             V: 'a;

    // Provided method
    fn cleanup(&mut self) { ... }
}

Represents a key-value store

Required Methods

fn new(name: Option<&str>) -> Self

New key-value store

fn len(&self) -> u64

The length of the store

fn is_empty(&self) -> bool

Check if the store is empty

fn get(&self, key: K) -> Option<&V>

Get a value from the store

fn get_mut(&mut self, key: K) -> Option<&mut V>

Get a mutable value from the store

fn set(&mut self, key: K, value: V)

Set a value in the store

fn has(&self, key: K) -> bool

Check if a key exists

fn iter<'a>(&'a self) -> impl Iterator<Item = (&'a K, &'a V)>

where K: 'a, V: 'a,

Iterate over the store

fn iter_mut<'a>(&'a mut self) -> impl Iterator<Item = (&'a K, &'a mut V)>

where K: 'a, V: 'a,

Iterate mutably over the store

Provided Methods

fn cleanup(&mut self)

Cleanup the store

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<K: U64, V: Serialize + DeserializeOwned + Clone> KVStore<K, V> for FileKV<K, V>

Available on crate feature std only.

impl<K: U64, V: Serialize + DeserializeOwned + Clone> KVStore<K, V> for KV<K, V>