sqlx_core::type_checking

Struct FmtValue

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pub struct FmtValue<'v, DB>
where
    DB: Database,
{ /* private fields */ }
Expand description

An adapter for Value which attempts to decode the value and format it when printed using Debug.

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impl<'v, DB> FmtValue<'v, DB>
where DB: Database,

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pub fn debug<T>(value: &'v <DB as Database>::Value) -> Self
where T: Decode<'v, DB> + Debug + Any,

When printed with Debug, attempt to decode value as the given type T and format it using Debug.

If value could not be decoded as T, the reason is printed instead.

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pub fn unknown(value: &'v <DB as Database>::Value) -> Self
where DB: TypeChecking,

If the type to be decoded is not known or not supported, print the SQL type instead, as well as any applicable SQLx feature that needs to be enabled.

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impl<'v, DB> Debug for FmtValue<'v, DB>
where DB: Database,

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'v, DB> Freeze for FmtValue<'v, DB>

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impl<'v, DB> RefUnwindSafe for FmtValue<'v, DB>
where <DB as Database>::Value: RefUnwindSafe,

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impl<'v, DB> Send for FmtValue<'v, DB>
where <DB as Database>::Value: Sync,

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impl<'v, DB> Sync for FmtValue<'v, DB>
where <DB as Database>::Value: Sync,

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impl<'v, DB> Unpin for FmtValue<'v, DB>

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impl<'v, DB> UnwindSafe for FmtValue<'v, DB>
where <DB as Database>::Value: RefUnwindSafe,

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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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<T> IntoEither for T

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

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type Error = Infallible

The type returned in the event of a conversion error.
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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 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.
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impl<T> WithSubscriber for T

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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
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> ErasedDestructor for T
where T: 'static,