Struct sp_trie::KeySpacedDB

source · [−]

pub struct KeySpacedDB<'a, DB, H>(_, _, _);

Expand description

HashDB implementation that append a encoded prefix (unique id bytes) in addition to the prefix of every key value.

Implementations

source

impl<'a, DB, H> KeySpacedDB<'a, DB, H> where
H: Hasher,

source

pub fn new(db: &'a DB, ks: &'a [u8 ]) -> Self

instantiate new keyspaced db

Trait Implementations

source

impl<'a, DB, H, T> HashDBRef<H, T> for KeySpacedDB<'a, DB, H> where
 DB: HashDBRef<H, T>,
 H: Hasher,
 T: From<&'static [u8 ]>,

source

fn get(&self, key: &H::Out, prefix: Prefix<'_>) -> Option<T>

Look up a given hash into the bytes that hash to it, returning None if the hash is not known. Read more

source

fn contains(&self, key: &H::Out, prefix: Prefix<'_>) -> bool

Check for the existance of a hash-key.

Auto Trait Implementations

impl<'a, DB, H> RefUnwindSafe for KeySpacedDB<'a, DB, H> where
DB: RefUnwindSafe,
H: RefUnwindSafe,

impl<'a, DB, H> Send for KeySpacedDB<'a, DB, H> where
DB: Sync,
H: Send,

impl<'a, DB, H> Sync for KeySpacedDB<'a, DB, H> where
DB: Sync,
H: Sync,

impl<'a, DB, H> Unpin for KeySpacedDB<'a, DB, H> where
H: Unpin,

impl<'a, DB, H> UnwindSafe for KeySpacedDB<'a, DB, H> where
DB: RefUnwindSafe,
H: UnwindSafe,

Blanket Implementations

source

impl<T> Any for T where
T: 'static + ?Sized,

source

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

source

impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

source

impl<T> Instrument for T

source

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

source

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

source

impl<T, U> Into for T where
U: From<T>,

const: unstable · source

pub fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source

impl<T, Outer> IsWrappedBy<Outer> for T where
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,

source

pub fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

source

pub fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

source

impl<T> Same<T> for T

type Output = T

Should always be Self

source

impl<T, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

source

impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

source

impl<S, T> UncheckedInto<T> for S where
T: UncheckedFrom<S>,

source

pub fn unchecked_into(self) -> T

The counterpart to unchecked_from.

source

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

source

pub fn vzip(self) -> V

source

Struct sp_trie::KeySpacedDB

Implementations

impl<'a, DB, H> KeySpacedDB<'a, DB, H> where H: Hasher,

pub fn new(db: &'a DB, ks: &'a [u8]) -> Self

Trait Implementations

impl<'a, DB, H, T> HashDBRef<H, T> for KeySpacedDB<'a, DB, H> where DB: HashDBRef<H, T>, H: Hasher, T: From<&'static [u8]>,

fn get(&self, key: &H::Out, prefix: Prefix<'_>) -> Option<T>

fn contains(&self, key: &H::Out, prefix: Prefix<'_>) -> bool

Auto Trait Implementations

impl<'a, DB, H> RefUnwindSafe for KeySpacedDB<'a, DB, H> where DB: RefUnwindSafe, H: RefUnwindSafe,

impl<'a, DB, H> Send for KeySpacedDB<'a, DB, H> where DB: Sync, H: Send,

impl<'a, DB, H> Sync for KeySpacedDB<'a, DB, H> where DB: Sync, H: Sync,

impl<'a, DB, H> Unpin for KeySpacedDB<'a, DB, H> where H: Unpin,

impl<'a, DB, H> UnwindSafe for KeySpacedDB<'a, DB, H> where DB: RefUnwindSafe, H: UnwindSafe,

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<T, Outer> IsWrappedBy<Outer> for T where Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

pub fn from_ref(outer: &Outer) -> &T

pub fn from_mut(outer: &mut Outer) -> &mut T

impl<T> Same<T> for T

type Output = T

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<S, T> UncheckedInto<T> for S where T: UncheckedFrom<S>,

pub fn unchecked_into(self) -> T

impl<V, T> VZip<V> for T where V: MultiLane<T>,

pub fn vzip(self) -> V

impl<T> MaybeRefUnwindSafe for T where T: RefUnwindSafe,

impl<'a, DB, H> KeySpacedDB<'a, DB, H> where
H: Hasher,

pub fn new(db: &'a DB, ks: &'a [u8 ]) -> Self

impl<'a, DB, H, T> HashDBRef<H, T> for KeySpacedDB<'a, DB, H> where
DB: HashDBRef<H, T>,
H: Hasher,
T: From<&'static [u8 ]>,

impl<'a, DB, H> RefUnwindSafe for KeySpacedDB<'a, DB, H> where
DB: RefUnwindSafe,
H: RefUnwindSafe,

impl<'a, DB, H> Send for KeySpacedDB<'a, DB, H> where
DB: Sync,
H: Send,

impl<'a, DB, H> Sync for KeySpacedDB<'a, DB, H> where
DB: Sync,
H: Sync,

impl<'a, DB, H> Unpin for KeySpacedDB<'a, DB, H> where
H: Unpin,

impl<'a, DB, H> UnwindSafe for KeySpacedDB<'a, DB, H> where
DB: RefUnwindSafe,
H: UnwindSafe,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, Outer> IsWrappedBy<Outer> for T where
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<S, T> UncheckedInto<T> for S where
T: UncheckedFrom<S>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

impl<T> MaybeRefUnwindSafe for T where
T: RefUnwindSafe,