Trait fuel_core::state::KeyValueStore

source · [−]
pub trait KeyValueStore {
    fn get(&self, key: &[u8], column: ColumnId) -> Result<Option<Vec<u8>>>;

    fn put(
        &self, 
        key: Vec<u8>, 
        column: ColumnId, 
        value: Vec<u8>
    ) -> Result<Option<Vec<u8>>>;

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

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

    fn iter_all(
        &self, 
        column: ColumnId, 
        prefix: Option<Vec<u8>>, 
        start: Option<Vec<u8>>, 
        direction: IterDirection
    ) -> Box<dyn Iterator<Item = (Vec<u8>, Vec<u8>)>>;
}

Required methods

Implementors