Struct clone_cw_multi_test::ReadonlyPrefixedStorage

pub struct ReadonlyPrefixedStorage<'a> { /* private fields */ }

Implementations

impl<'a> ReadonlyPrefixedStorage<'a>

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

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

Trait Implementations

impl<'a> Storage for ReadonlyPrefixedStorage<'a>

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

range allows iteration over a set of keys, either forwards or backwards

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.

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

Allows iteration over a set of keys, either forwards or backwards.

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

Allows iteration over a set of values, either forwards or backwards.