Struct diesel::r2d2::NopEventHandler

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pub struct NopEventHandler;

Available on crate feature r2d2 only.

Expand description

A HandleEvent implementation which does nothing.

Trait Implementations

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impl Clone for NopEventHandler

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fn clone(&self) -> NopEventHandler

Returns a copy of the value. Read more

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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl Debug for NopEventHandler

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

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impl HandleEvent for NopEventHandler

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fn handle_acquire(&self, event: AcquireEvent)

Called when a new connection is acquired. Read more

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fn handle_release(&self, event: ReleaseEvent)

Called when a connection is released. Read more

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fn handle_checkout(&self, event: CheckoutEvent)

Called when a connection is checked out from the pool. Read more

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fn handle_timeout(&self, event: TimeoutEvent)

Called when a checkout attempt times out. Read more

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fn handle_checkin(&self, event: CheckinEvent)

Called when a connection is checked back into the pool.

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impl Copy for NopEventHandler

Auto Trait Implementations

impl RefUnwindSafe for NopEventHandler

impl Send for NopEventHandler

impl Sync for NopEventHandler

impl Unpin for NopEventHandler

impl UnwindSafe for NopEventHandler

Blanket Implementations

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impl<T> Any for Twhere
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 Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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> IntoSql for T

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fn into_sql<T>(self) -> AsExprOf<Self, T>where
Self: AsExpression<T> + Sized,
T: SqlType + TypedExpressionType,

Convert self to an expression for Diesel’s query builder. Read more

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fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>where
&'a Self: AsExpression<T>,
T: SqlType + TypedExpressionType,

Convert &self to an expression for Diesel’s query builder. Read more

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impl<T> ToOwned for Twhere
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

Struct diesel::r2d2::NopEventHandler

Trait Implementations

impl Clone for NopEventHandler

fn clone(&self) -> NopEventHandler

fn clone_from(&mut self, source: &Self)

impl Debug for NopEventHandler

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

impl HandleEvent for NopEventHandler

fn handle_acquire(&self, event: AcquireEvent)

fn handle_release(&self, event: ReleaseEvent)

fn handle_checkout(&self, event: CheckoutEvent)

fn handle_timeout(&self, event: TimeoutEvent)

fn handle_checkin(&self, event: CheckinEvent)

impl Copy for NopEventHandler

Auto Trait Implementations

impl RefUnwindSafe for NopEventHandler

impl Send for NopEventHandler

impl Sync for NopEventHandler

impl Unpin for NopEventHandler

impl UnwindSafe for NopEventHandler

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> IntoSql for T

fn into_sql<T>(self) -> AsExprOf<Self, T>where Self: AsExpression<T> + Sized, T: SqlType + TypedExpressionType,

fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>where &'a Self: AsExpression<T>, T: SqlType + TypedExpressionType,

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

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

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

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

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

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

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

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

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

fn into_sql<T>(self) -> AsExprOf<Self, T>where
Self: AsExpression<T> + Sized,
T: SqlType + TypedExpressionType,

fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>where
&'a Self: AsExpression<T>,
T: SqlType + TypedExpressionType,

impl<T> ToOwned for Twhere
T: Clone,

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

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