Skip to main content

MigrationContext

coven

Struct MigrationContext 

Source 
pub struct MigrationContext<'connection> { /* private fields */ }
Expand description

App SQL inside the transaction owned by the migration run. The context borrows its owner and cannot change the transaction or connection.

Implementations§

Source§

impl<'connection> MigrationContext<'connection>

Source

pub fn execute<P>(&self, sql: &str, params: P) -> Result<usize, Error>
where P: Params,

Execute one app statement with parameters.

Source

pub fn execute_batch(&self, sql: &str) -> Result<(), Error>

Execute app statements without escaping the migration transaction.

Source

pub fn query_row<T, P, F>( &self, sql: &str, params: P, map: F, ) -> Result<T, Error>
where P: Params, F: FnOnce(&Row<'_>) -> Result<T, Error>,

Map one row from an app query.

Source

pub fn query<T, P, F>( &self, sql: &str, params: P, map: F, ) -> Result<Vec<T>, Error>
where P: Params, F: FnMut(&Row<'_>) -> Result<T, Error>,

Map every result of an app query.

Auto Trait Implementations§

§

impl<'connection> !Freeze for MigrationContext<'connection>

§

impl<'connection> !RefUnwindSafe for MigrationContext<'connection>

§

impl<'connection> !Send for MigrationContext<'connection>

§

impl<'connection> !Sync for MigrationContext<'connection>

§

impl<'connection> Unpin for MigrationContext<'connection>

§

impl<'connection> UnsafeUnpin for MigrationContext<'connection>

§

impl<'connection> !UnwindSafe for MigrationContext<'connection>

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

§

impl<T> Instrument for T

§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

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

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.

Source§

impl<T> IntoEither for T

Source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
§

impl<Unshared, Shared> IntoShared<Shared> for Unshared
where Shared: FromUnshared<Unshared>,

§

fn into_shared(self) -> Shared

Creates a shared type from an unshared type.
§

impl<T> PolicyExt for T
where T: ?Sized,

§

fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] only if self and other return Action::Follow. Read more
§

fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] if either self or other returns Action::Follow. Read more
Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
Source§

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
Source§

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

Source§

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

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

§

fn vzip(self) -> V

§

impl<T> WithSubscriber for T

§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
§

impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

§

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

§

impl<T> ErasedDestructor for T
where T: 'static,

§

impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,