Trait fuel_core::state::KeyValueStore

pub trait KeyValueStore {
    fn get(&self, key: &[u8], column: Column) -> Result<Option<Vec<u8>>>;
    fn put(
        &self,
        key: &[u8],
        column: Column,
        value: Vec<u8>
    ) -> Result<Option<Vec<u8>>>;
    fn delete(&self, key: &[u8], column: Column) -> Result<Option<Vec<u8>>>;
    fn exists(&self, key: &[u8], column: Column) -> Result<bool>;
    fn iter_all(
        &self,
        column: Column,
        prefix: Option<Vec<u8>>,
        start: Option<Vec<u8>>,
        direction: IterDirection
    ) -> Box<dyn Iterator<Item = KVItem> + '_>;
}

Required Methods

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

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

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

fn exists(&self, key: &[u8], column: Column) -> Result<bool>

fn iter_all(
    &self,
    column: Column,
    prefix: Option<Vec<u8>>,
    start: Option<Vec<u8>>,
    direction: IterDirection
) -> Box<dyn Iterator<Item = KVItem> + '_>

Implementors

impl KeyValueStore for MemoryStore

impl KeyValueStore for MemoryTransactionView

impl KeyValueStore for RocksDb