Struct cosmwasm_storage::PrefixedStorage

pub struct PrefixedStorage<'a> { /* fields omitted */ }

Implementations

impl<'a> PrefixedStorage<'a>

pub fn new(storage: &'a mut dyn Storage, namespace: &[u8]) -> Self

pub fn multilevel(storage: &'a mut dyn Storage, namespaces: &[&[u8]]) -> Self

Trait Implementations

impl<'a> Storage for PrefixedStorage<'a>

fn range<'b>(
    &'b self,
    start: Option<&[u8]>,
    end: Option<&[u8]>,
    order: Order
) -> Box<dyn Iterator<Item = Pair> + 'b>

range allows iteration over a set of keys, either forwards or backwards uses standard rust range notation, and eg db.range(b“foo“..b“bar“) also works reverse

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

Returns None when key does not exist. Returns Some(Vec) when key exists.

fn set(&mut self, key: &[u8], value: &[u8])

fn remove(&mut self, key: &[u8])

Removes a database entry at key.