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CopyIn

postgresql

Struct CopyIn 

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pub struct CopyIn<T> { /* private fields */ }
Expand description

A writer for a binary COPY ... FROM STDIN decoded from T.

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impl<T: ToRow> CopyIn<T>

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pub async fn write_row(&self, row: &T) -> Result<(), Error>

Writes one row.

Rows are encoded into a reusable buffer and coalesced into larger CopyData messages, so a bulk load does not cost one allocation and one network write per row.

§Errors

Returns an error if encoding fails or the connection is closed.

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pub async fn finish(self) -> Result<u64, Error>

Completes the COPY and returns the number of rows written.

§Errors

Returns an error if the server rejects the COPY.

Auto Trait Implementations§

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impl<T> !Freeze for CopyIn<T>

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impl<T> !RefUnwindSafe for CopyIn<T>

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impl<T> !UnwindSafe for CopyIn<T>

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impl<T> Send for CopyIn<T>
where PhantomData<fn() -> T>: Send,

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impl<T> Sync for CopyIn<T>
where PhantomData<fn() -> T>: Sync,

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impl<T> Unpin for CopyIn<T>
where PhantomData<fn() -> T>: Unpin,

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impl<T> UnsafeUnpin for CopyIn<T>
where PhantomData<fn() -> T>: UnsafeUnpin,

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

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

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