Trait gear_common::storage::KeyIterableByKeyMap

pub trait KeyIterableByKeyMap {
    type Key1;
    type Key2;
    type DrainIter: Iterator<Item = Self::Key2>;
    type Iter: Iterator<Item = Self::Key2>;

    // Required methods
    fn drain_prefix_keys(key: Self::Key1) -> Self::DrainIter;
    fn iter_prefix_keys(key: Self::Key1) -> Self::Iter;
}

Represents iterable over second keys logic for double key maps (Key1 -> Key2 -> Value).

Returns the iterators over specified (associated) type of the second map keys by given first key.

Required Associated Types

type Key1

Map’s first key type.

type Key2

Map’s second key type.

type DrainIter: Iterator<Item = Self::Key2>

Removal iterator type.

type Iter: Iterator<Item = Self::Key2>

Getting iterator type.

Required Methods

fn drain_prefix_keys(key: Self::Key1) -> Self::DrainIter

Creates the removal iterator over double map Items.

fn iter_prefix_keys(key: Self::Key1) -> Self::Iter

Creates the getting iterator over double map Items.

Object Safety

This trait is not object safe.

Implementors

impl<T, Task, Error, OutputError, Callbacks> KeyIterableByKeyMap for TaskPoolImpl<T, Task, Error, OutputError, Callbacks>

where T: DoubleMapStorage<Key2 = Task, Value = ()> + KeyIterableByKeyMap, Error: TaskPoolError, OutputError: From<Error>, Callbacks: TaskPoolCallbacks,

type Key1 = <T as KeyIterableByKeyMap>::Key1

type Key2 = <T as KeyIterableByKeyMap>::Key2

type DrainIter = <T as KeyIterableByKeyMap>::DrainIter

type Iter = <T as KeyIterableByKeyMap>::Iter