Struct diesel::r2d2::ConnectionManager

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pub struct ConnectionManager<T> { /* private fields */ }
Available on crate feature r2d2 only.
Expand description

An r2d2 connection manager for use with Diesel.

See the r2d2 documentation for usage examples.

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impl<T> ConnectionManager<T>

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pub fn new<S: Into<String>>(database_url: S) -> Self

Returns a new connection manager, which establishes connections to the given database URL.

Trait Implementations§

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impl<T: Clone> Clone for ConnectionManager<T>

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fn clone(&self) -> ConnectionManager<T>

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<T> Debug for ConnectionManager<T>

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

Formats the value using the given formatter. Read more
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impl<T> ManageConnection for ConnectionManager<T>where T: R2D2Connection + Send + 'static,

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type Connection = T

The connection type this manager deals with.
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type Error = Error

The error type returned by Connections.
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fn connect(&self) -> Result<T, Error>

Attempts to create a new connection.
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fn is_valid(&self, conn: &mut T) -> Result<(), Error>

Determines if the connection is still connected to the database. Read more
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fn has_broken(&self, conn: &mut T) -> bool

Quickly determines if the connection is no longer usable. Read more
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impl<T: Send + 'static> Sync for ConnectionManager<T>

Auto Trait Implementations§

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impl<T> RefUnwindSafe for ConnectionManager<T>where T: RefUnwindSafe,

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impl<T> Send for ConnectionManager<T>where T: Send,

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impl<T> Unpin for ConnectionManager<T>where T: Unpin,

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impl<T> UnwindSafe for ConnectionManager<T>where T: UnwindSafe,

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

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> 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,

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

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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<U>>::Error>

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

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

The type returned in the event of a conversion error.
const: unstable · source§

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

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

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fn vzip(self) -> V