Struct MapState 

pub struct MapState<B>
where
    B: StateBackend,
{ /* private fields */ }

Map state (stores key-value pairs per key).

Implementations

impl<B> MapState<B>

where B: StateBackend,

pub fn new(backend: Arc<B>, namespace: String, key: Vec<u8>) -> Self

Create a new map state.

pub async fn get(&self, map_key: &[u8]) -> Result<Option<Vec<u8>>>

Get a value from the map.

pub async fn put(&self, map_key: &[u8], value: Vec<u8>) -> Result<()>

Put a value into the map.

pub async fn remove(&self, map_key: &[u8]) -> Result<()>

Remove a key from the map.

pub async fn contains(&self, map_key: &[u8]) -> Result<bool>

Check if the map contains a key.

Trait Implementations

impl<B> KeyedState for MapState<B>

where B: StateBackend,

fn key(&self) -> &[u8]

Get the state key.

async fn clear(&self) -> Result<()>

Clear the state.