inc_complete

Struct DbHandle

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pub struct DbHandle<'db, S> { /* private fields */ }
Expand description

A handle to the database during some operation.

This wraps calls to the Db so that any get calls will be automatically registered as dependencies of the current operation.

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impl<'db, S> DbHandle<'db, S>

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pub fn storage(&self) -> &S

Retrieve an immutable reference to this Db’s storage

Note that any mutations made to the storage using this are not tracked by the database! Using this incorrectly may break correctness!

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impl<S: Storage> DbHandle<'_, S>

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pub fn get<C: OutputType + ComputationId>(&self, compute: C) -> C::Output
where S: StorageFor<C>,

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impl<'db, S, C> DbGet<C> for DbHandle<'db, S>
where C: OutputType + ComputationId, S: Storage + StorageFor<C>,

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fn get(&self, key: C) -> C::Output

Auto Trait Implementations§

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impl<'db, S> Freeze for DbHandle<'db, S>

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impl<'db, S> RefUnwindSafe for DbHandle<'db, S>
where S: RefUnwindSafe,

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impl<'db, S> Send for DbHandle<'db, S>
where S: Sync,

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impl<'db, S> Sync for DbHandle<'db, S>
where S: Sync,

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impl<'db, S> Unpin for DbHandle<'db, S>

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impl<'db, S> UnwindSafe for DbHandle<'db, S>
where S: RefUnwindSafe,

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<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, 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.