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Cursor

cartel_sqlite

Struct Cursor 

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pub struct Cursor<'query, 'connection: 'query, 'd: 'connection, R, Q: TypedQuery, P = (), I = Empty>
where
    I: HasQuery<Q> + Catalog,
{ /* private fields */ }
Expand description

A bounded row scan tied to the connection or transaction that issued it. Borrowed rows are valid only for one visitor invocation and cannot be retained by a later invocation.

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impl<'query, 'connection: 'query, 'd: 'connection, R: Decode, Q: TypedQuery, P: Bind, I: Catalog + HasQuery<Q>> Cursor<'query, 'connection, 'd, R, Q, P, I>

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pub fn visit<V>( self, visitor: V, ) -> impl Fiber<'d, Output = Result<(), Error>> + use<'query, 'connection, 'd, R, Q, P, I, V>
where V: for<'row> FnMut(R::Borrowed<'row>) -> ControlFlow<()>,

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impl<'query, 'connection, 'd, R, Q, P = (), I = Empty> !RefUnwindSafe for Cursor<'query, 'connection, 'd, R, Q, P, I>

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impl<'query, 'connection, 'd, R, Q, P = (), I = Empty> !Send for Cursor<'query, 'connection, 'd, R, Q, P, I>

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impl<'query, 'connection, 'd, R, Q, P = (), I = Empty> !Sync for Cursor<'query, 'connection, 'd, R, Q, P, I>

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impl<'query, 'connection, 'd, R, Q, P = (), I = Empty> !UnwindSafe for Cursor<'query, 'connection, 'd, R, Q, P, I>

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impl<'query, 'connection, 'd, R, Q, P, I> Freeze for Cursor<'query, 'connection, 'd, R, Q, P, I>
where Machine<'query, 'connection, 'd, I, P, Statement<I, Q>>: Freeze, PhantomData<fn() -> R>: Freeze,

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impl<'query, 'connection, 'd, R, Q, P, I> Unpin for Cursor<'query, 'connection, 'd, R, Q, P, I>
where Machine<'query, 'connection, 'd, I, P, Statement<I, Q>>: Unpin, PhantomData<fn() -> R>: Unpin,

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impl<'query, 'connection, 'd, R, Q, P, I> UnsafeUnpin for Cursor<'query, 'connection, 'd, R, Q, P, I>
where Machine<'query, 'connection, 'd, I, P, Statement<I, Q>>: UnsafeUnpin, PhantomData<fn() -> R>: UnsafeUnpin,

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> Convert<T> for T

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fn into(self) -> T

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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<'w, 'd, W, P, ID> Sink<'w, 'd, W, ID, Never> for P
where ID: Identity, W: Spec<TerminalFailure = Never> + 'w, P: ?Sized,

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fn fail(&self, _: Id<'d, ID>, cause: Error<'w, W>, _: &mut Token<Identity<'d>>)

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impl<'w, 'd, W, P, ID> Sink<'w, 'd, W, ID, Never> for P
where ID: Identity, W: Spec<OpenFailure = Never> + 'w, P: ?Sized,

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fn fail( &self, _: Completion<'_, 'd, ID>, cause: Error<'w, W>, _: &mut Context<'_, 'd>, )

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

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type Error = !

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

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.