[−][src]Struct tokio_postgres::Connection
A connection to a PostgreSQL database.
This is one half of what is returned when a new connection is established. It performs the actual IO with the server, and should generally be spawned off onto an executor to run in the background.
Connection implements Future, and only resolves when the connection is closed, either because a fatal error has
occurred, or because its associated Client has dropped and all outstanding work has completed.
Implementations
impl<S, T> Connection<S, T> where
S: AsyncRead + AsyncWrite + Unpin,
T: AsyncRead + AsyncWrite + Unpin, [src]
S: AsyncRead + AsyncWrite + Unpin,
T: AsyncRead + AsyncWrite + Unpin,
pub fn parameter(&self, name: &str) -> Option<&str>[src]
Returns the value of a runtime parameter for this connection.
pub fn poll_message(
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Result<AsyncMessage, Error>>>[src]
&mut self,
cx: &mut Context<'_>
) -> Poll<Option<Result<AsyncMessage, Error>>>
Polls for asynchronous messages from the server.
The server can send notices as well as notifications asynchronously to the client. Applications that wish to
examine those messages should use this method to drive the connection rather than its Future implementation.
Trait Implementations
impl<S, T> Future for Connection<S, T> where
S: AsyncRead + AsyncWrite + Unpin,
T: AsyncRead + AsyncWrite + Unpin, [src]
S: AsyncRead + AsyncWrite + Unpin,
T: AsyncRead + AsyncWrite + Unpin,
Auto Trait Implementations
impl<S, T> !RefUnwindSafe for Connection<S, T>
impl<S, T> Send for Connection<S, T> where
S: Send,
T: Send,
S: Send,
T: Send,
impl<S, T> !Sync for Connection<S, T>
impl<S, T> Unpin for Connection<S, T> where
S: Unpin,
T: Unpin,
S: Unpin,
T: Unpin,
impl<S, T> !UnwindSafe for Connection<S, T>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T[src]
impl<T> From<T> for T[src]
impl<T> FutureExt for T where
T: Future + ?Sized, [src]
T: Future + ?Sized,
fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U, [src]
F: FnOnce(Self::Output) -> U,
fn map_into<U>(self) -> MapInto<Self, U> where
Self::Output: Into<U>, [src]
Self::Output: Into<U>,
fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future, [src]
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
fn left_future<B>(self) -> Either<Self, B> where
B: Future<Output = Self::Output>, [src]
B: Future<Output = Self::Output>,
fn right_future<A>(self) -> Either<A, Self> where
A: Future<Output = Self::Output>, [src]
A: Future<Output = Self::Output>,
fn into_stream(self) -> IntoStream<Self>[src]
fn flatten(self) -> Flatten<Self> where
Self::Output: Future, [src]
Self::Output: Future,
fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream, [src]
Self::Output: Stream,
fn fuse(self) -> Fuse<Self>[src]
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output), [src]
F: FnOnce(&Self::Output),
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe, [src]
Self: UnwindSafe,
fn shared(self) -> Shared<Self> where
Self::Output: Clone, [src]
Self::Output: Clone,
fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)[src]
fn boxed<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send>> where
Self: Send + 'a, [src]
Self: Send + 'a,
fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>> where
Self: 'a, [src]
Self: 'a,
fn unit_error(self) -> UnitError<Self>[src]
fn never_error(self) -> NeverError<Self>[src]
fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin, [src]
Self: Unpin,
fn now_or_never(self) -> Option<Self::Output>[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<F> IntoFuture for F where
F: Future, [src]
F: Future,
type Output = <F as Future>::Output
🔬 This is a nightly-only experimental API. (
into_future)The output that the future will produce on completion.
type Future = F
🔬 This is a nightly-only experimental API. (
into_future)Which kind of future are we turning this into?
fn into_future(self) -> <F as IntoFuture>::Future[src]
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized, [src]
F: Future<Output = Result<T, E>> + ?Sized,
type Ok = T
The type of successful values yielded by this future
type Error = E
The type of failures yielded by this future
fn try_poll(
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>[src]
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>
impl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized, [src]
Fut: TryFuture + ?Sized,
fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where
Self::Ok: Sink<Item>,
<Self::Ok as Sink<Item>>::Error == Self::Error, [src]
Self::Ok: Sink<Item>,
<Self::Ok as Sink<Item>>::Error == Self::Error,
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnOnce(Self::Ok) -> T, [src]
F: FnOnce(Self::Ok) -> T,
fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E> where
E: FnOnce(Self::Error) -> T,
F: FnOnce(Self::Ok) -> T, [src]
E: FnOnce(Self::Error) -> T,
F: FnOnce(Self::Ok) -> T,
fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E, [src]
F: FnOnce(Self::Error) -> E,
fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>, [src]
Self::Error: Into<E>,
fn ok_into<U>(self) -> OkInto<Self, U> where
Self::Ok: Into<U>, [src]
Self::Ok: Into<U>,
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>, [src]
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>, [src]
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnOnce(&Self::Ok), [src]
F: FnOnce(&Self::Ok),
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnOnce(&Self::Error), [src]
F: FnOnce(&Self::Error),
fn try_flatten(self) -> TryFlatten<Self, Self::Ok> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error, [src]
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
fn try_flatten_stream(self) -> TryFlattenStream<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error, [src]
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,
fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where
F: FnOnce(Self::Error) -> Self::Ok, [src]
F: FnOnce(Self::Error) -> Self::Ok,
fn into_future(self) -> IntoFuture<Self>[src]
fn try_poll_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin, [src]
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,