Struct oasis_runtime_sdk::storage::PrefixStore

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pub struct PrefixStore<S: Store, P: AsRef<[u8]>> { /* private fields */ }
Expand description

A key-value store that prefixes all keys with the given prefix.

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impl<S: Store, P: AsRef<[u8]>> PrefixStore<S, P>

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pub fn new(parent: S, prefix: P) -> Self

Create a new prefix store with the given prefix.

Trait Implementations§

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impl<S: Store, P: AsRef<[u8]>> Store for PrefixStore<S, P>

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

Fetch entry with given key.
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fn insert(&mut self, key: &[u8], value: &[u8])

Update entry with given key to the given value.
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fn remove(&mut self, key: &[u8])

Remove entry with given key.
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fn iter(&self) -> Box<dyn Iterator + '_>

Returns an iterator over the tree.
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fn prefetch_prefixes(&mut self, prefixes: Vec<Prefix>, limit: u16)

Populate the in-memory tree with nodes for keys starting with given prefixes.

Auto Trait Implementations§

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impl<S, P> Freeze for PrefixStore<S, P>
where S: Freeze, P: Freeze,

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impl<S, P> RefUnwindSafe for PrefixStore<S, P>
where S: RefUnwindSafe, P: RefUnwindSafe,

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impl<S, P> Send for PrefixStore<S, P>
where S: Send, P: Send,

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impl<S, P> Sync for PrefixStore<S, P>
where S: Sync, P: Sync,

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impl<S, P> Unpin for PrefixStore<S, P>
where S: Unpin, P: Unpin,

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impl<S, P> UnwindSafe for PrefixStore<S, P>
where S: UnwindSafe, P: UnwindSafe,

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<'a, T, E> AsTaggedExplicit<'a, E> for T
where T: 'a,

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fn explicit(self, class: Class, tag: u32) -> TaggedParser<'a, Explicit, Self, E>

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impl<'a, T, E> AsTaggedImplicit<'a, E> for T
where T: 'a,

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fn implicit( self, class: Class, constructed: bool, tag: u32, ) -> TaggedParser<'a, Implicit, Self, E>

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

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> SendSyncUnwindSafe for T
where T: Send + Sync + UnwindSafe + ?Sized,