Trait frame_support::storage::types::KeyGenerator

pub trait KeyGenerator {
    type Key: EncodeLike<Self::Key> + StaticTypeInfo;
    type KArg: Encode;
    type HashFn: FnOnce(&[u8]) -> Vec<u8>;
    type HArg;

    const HASHER_METADATA: &'static [StorageHasher];

    fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
        key: KArg
    ) -> Vec<u8>;
    fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
        key: &KArg, 
        hash_fns: Self::HArg
    ) -> Vec<u8>;
}

A trait that contains the current key as an associated type.

Associated Types

type Key: EncodeLike<Self::Key> + StaticTypeInfo

type KArg: Encode

type HashFn: FnOnce(&[u8]) -> Vec<u8>

type HArg

Associated Constants

const HASHER_METADATA: &'static [StorageHasher]

Required methods

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

Given a key tuple, calculate the final key by encoding each element individually and hashing them using the corresponding hasher in the KeyGenerator.

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

Given a key tuple, migrate the keys from using the old hashers as given by hash_fns to using the newer hashers as specified by this KeyGenerator.

Implementations on Foreign Types

impl<TupleElement0: KeyGeneratorInner> KeyGenerator for (TupleElement0,)

type Key = (TupleElement0::Key,)

type KArg = (TupleElement0::Key,)

type HArg = (TupleElement0::HashFn,)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1)

type Key = (TupleElement0::Key, TupleElement1::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner, TupleElement8: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn, TupleElement8::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner, TupleElement8: KeyGeneratorInner, TupleElement9: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn, TupleElement8::HashFn, TupleElement9::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner, TupleElement8: KeyGeneratorInner, TupleElement9: KeyGeneratorInner, TupleElement10: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn, TupleElement8::HashFn, TupleElement9::HashFn, TupleElement10::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner, TupleElement8: KeyGeneratorInner, TupleElement9: KeyGeneratorInner, TupleElement10: KeyGeneratorInner, TupleElement11: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn, TupleElement8::HashFn, TupleElement9::HashFn, TupleElement10::HashFn, TupleElement11::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner, TupleElement8: KeyGeneratorInner, TupleElement9: KeyGeneratorInner, TupleElement10: KeyGeneratorInner, TupleElement11: KeyGeneratorInner, TupleElement12: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn, TupleElement8::HashFn, TupleElement9::HashFn, TupleElement10::HashFn, TupleElement11::HashFn, TupleElement12::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner, TupleElement8: KeyGeneratorInner, TupleElement9: KeyGeneratorInner, TupleElement10: KeyGeneratorInner, TupleElement11: KeyGeneratorInner, TupleElement12: KeyGeneratorInner, TupleElement13: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key, TupleElement13::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key, TupleElement13::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn, TupleElement8::HashFn, TupleElement9::HashFn, TupleElement10::HashFn, TupleElement11::HashFn, TupleElement12::HashFn, TupleElement13::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner, TupleElement8: KeyGeneratorInner, TupleElement9: KeyGeneratorInner, TupleElement10: KeyGeneratorInner, TupleElement11: KeyGeneratorInner, TupleElement12: KeyGeneratorInner, TupleElement13: KeyGeneratorInner, TupleElement14: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key, TupleElement13::Key, TupleElement14::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key, TupleElement13::Key, TupleElement14::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn, TupleElement8::HashFn, TupleElement9::HashFn, TupleElement10::HashFn, TupleElement11::HashFn, TupleElement12::HashFn, TupleElement13::HashFn, TupleElement14::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner, TupleElement8: KeyGeneratorInner, TupleElement9: KeyGeneratorInner, TupleElement10: KeyGeneratorInner, TupleElement11: KeyGeneratorInner, TupleElement12: KeyGeneratorInner, TupleElement13: KeyGeneratorInner, TupleElement14: KeyGeneratorInner, TupleElement15: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key, TupleElement13::Key, TupleElement14::Key, TupleElement15::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key, TupleElement13::Key, TupleElement14::Key, TupleElement15::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn, TupleElement8::HashFn, TupleElement9::HashFn, TupleElement10::HashFn, TupleElement11::HashFn, TupleElement12::HashFn, TupleElement13::HashFn, TupleElement14::HashFn, TupleElement15::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner, TupleElement8: KeyGeneratorInner, TupleElement9: KeyGeneratorInner, TupleElement10: KeyGeneratorInner, TupleElement11: KeyGeneratorInner, TupleElement12: KeyGeneratorInner, TupleElement13: KeyGeneratorInner, TupleElement14: KeyGeneratorInner, TupleElement15: KeyGeneratorInner, TupleElement16: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key, TupleElement13::Key, TupleElement14::Key, TupleElement15::Key, TupleElement16::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key, TupleElement13::Key, TupleElement14::Key, TupleElement15::Key, TupleElement16::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn, TupleElement8::HashFn, TupleElement9::HashFn, TupleElement10::HashFn, TupleElement11::HashFn, TupleElement12::HashFn, TupleElement13::HashFn, TupleElement14::HashFn, TupleElement15::HashFn, TupleElement16::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

impl<TupleElement0: KeyGeneratorInner, TupleElement1: KeyGeneratorInner, TupleElement2: KeyGeneratorInner, TupleElement3: KeyGeneratorInner, TupleElement4: KeyGeneratorInner, TupleElement5: KeyGeneratorInner, TupleElement6: KeyGeneratorInner, TupleElement7: KeyGeneratorInner, TupleElement8: KeyGeneratorInner, TupleElement9: KeyGeneratorInner, TupleElement10: KeyGeneratorInner, TupleElement11: KeyGeneratorInner, TupleElement12: KeyGeneratorInner, TupleElement13: KeyGeneratorInner, TupleElement14: KeyGeneratorInner, TupleElement15: KeyGeneratorInner, TupleElement16: KeyGeneratorInner, TupleElement17: KeyGeneratorInner> KeyGenerator for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17)

type Key = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key, TupleElement13::Key, TupleElement14::Key, TupleElement15::Key, TupleElement16::Key, TupleElement17::Key)

type KArg = (TupleElement0::Key, TupleElement1::Key, TupleElement2::Key, TupleElement3::Key, TupleElement4::Key, TupleElement5::Key, TupleElement6::Key, TupleElement7::Key, TupleElement8::Key, TupleElement9::Key, TupleElement10::Key, TupleElement11::Key, TupleElement12::Key, TupleElement13::Key, TupleElement14::Key, TupleElement15::Key, TupleElement16::Key, TupleElement17::Key)

type HArg = (TupleElement0::HashFn, TupleElement1::HashFn, TupleElement2::HashFn, TupleElement3::HashFn, TupleElement4::HashFn, TupleElement5::HashFn, TupleElement6::HashFn, TupleElement7::HashFn, TupleElement8::HashFn, TupleElement9::HashFn, TupleElement10::HashFn, TupleElement11::HashFn, TupleElement12::HashFn, TupleElement13::HashFn, TupleElement14::HashFn, TupleElement15::HashFn, TupleElement16::HashFn, TupleElement17::HashFn)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

const HASHER_METADATA: &'static [StorageHasher]

fn final_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: KArg
) -> Vec<u8>

fn migrate_key<KArg: EncodeLikeTuple<Self::KArg> + TupleToEncodedIter>(
    key: &KArg,
    hash_fns: Self::HArg
) -> Vec<u8>

Implementors

impl<H: StorageHasher, K: FullCodec + StaticTypeInfo> KeyGenerator for Key<H, K>

type Key = K

type KArg = (K,)

type HashFn = Box<dyn FnOnce(&[u8]) -> Vec<u8>>

type HArg = (Self::HashFn,)

const HASHER_METADATA: &'static [StorageHasher]