xitca_postgres::statement

Struct StatementQuery

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pub struct StatementQuery<'a, P> { /* private fields */ }
Expand description

a named statement with it’s query params

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impl<'s, P> Encode for StatementQuery<'s, P>
where P: AsParams,

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type Output = &'s [Column]

output type defines how a potential async row streaming type should be constructed. certain state from the encode type may need to be passed for constructing the stream
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fn encode<const SYNC_MODE: bool>( self, buf: &mut BytesMut, ) -> Result<Self::Output, Error>

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impl<'s, C, P> Execute<'_, C> for StatementQuery<'s, P>
where C: Query, P: AsParams,

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type ExecuteOutput = ResultFuture<RowAffected>

outcome of execute. used for single time database response: number of rows affected by execution for example.
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type QueryOutput = Ready<Result<GenericRowStream<&'s [Column], Typed>, Error>>

outcome of query. used for repeated database response: database rows for example Read more
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fn execute(self, cli: &C) -> Self::ExecuteOutput

define how a statement is executed with single time response
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fn query(self, cli: &C) -> Self::QueryOutput

define how a statement is queried with repeated response
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impl<'s, C, P> ExecuteBlocking<'_, C> for StatementQuery<'s, P>
where C: Query, P: AsParams,

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type ExecuteOutput = Result<u64, Error>

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type QueryOutput = Result<GenericRowStream<&'s [Column], Typed>, Error>

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fn execute_blocking(self, cli: &C) -> Result<u64, Error>

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fn query_blocking(self, cli: &C) -> Self::QueryOutput

Auto Trait Implementations§

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impl<'a, P> Freeze for StatementQuery<'a, P>
where P: Freeze,

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impl<'a, P> RefUnwindSafe for StatementQuery<'a, P>
where P: RefUnwindSafe,

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impl<'a, P> Send for StatementQuery<'a, P>
where P: Send,

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impl<'a, P> Sync for StatementQuery<'a, P>
where P: Sync,

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impl<'a, P> Unpin for StatementQuery<'a, P>
where P: Unpin,

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impl<'a, P> UnwindSafe for StatementQuery<'a, P>
where P: UnwindSafe,

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<'a, B, E, const SYNC_MODE: bool> ExecuteMut<'_, Pipeline<'a, B, SYNC_MODE>> for E
where B: DerefMut<Target = BytesMut>, E: Encode<Output = &'a [Column]>,

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type ExecuteMutOutput = <E as ExecuteMut<'_, Pipeline<'a, B, SYNC_MODE>>>::QueryMutOutput

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type QueryMutOutput = Result<(), Error>

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fn execute_mut( self, pipe: &mut Pipeline<'a, B, SYNC_MODE>, ) -> <E as ExecuteMut<'_, Pipeline<'a, B, SYNC_MODE>>>::ExecuteMutOutput

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fn query_mut( self, pipe: &mut Pipeline<'a, B, SYNC_MODE>, ) -> <E as ExecuteMut<'_, Pipeline<'a, B, SYNC_MODE>>>::QueryMutOutput

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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 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> Same for T

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type Output = T

Should always be Self
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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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V