[−][src]Struct deadpool_postgres::Transaction
A wrapper for tokio_postgres::Transaction
which uses the statement cache
from the client object it was created by.
Fields
statement_cache: &'a mut StatementCache
The statement cache
Implementations
impl<'a> Transaction<'a>
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pub async fn prepare<'_, '_>(
&'_ self,
query: &'_ str
) -> Result<Statement, Error>
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&'_ self,
query: &'_ str
) -> Result<Statement, Error>
Creates a new prepared statement using the statement cache if possible.
pub async fn prepare_typed<'_, '_, '_>(
&'_ self,
query: &'_ str,
types: &'_ [Type]
) -> Result<Statement, Error>
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&'_ self,
query: &'_ str,
types: &'_ [Type]
) -> Result<Statement, Error>
Creates a new prepared statement using the statement cache if possible.
pub async fn commit(self) -> Result<(), Error>
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Like tokio_postgres::Transaction::commit
pub async fn rollback(self) -> Result<(), Error>
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Like tokio_postgres::Transaction::rollback
pub async fn transaction<'b>(&'b mut self) -> Result<Transaction<'b>, Error>
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Like tokio_postgres::Transaction::transaction
Methods from Deref<Target = PgTransaction<'a>>
pub async fn prepare(&'_ self, query: &'_ str) -> Result<Statement, Error>
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Like Client::prepare
.
pub async fn prepare_typed(
&'_ self,
query: &'_ str,
parameter_types: &'_ [Type]
) -> Result<Statement, Error>
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&'_ self,
query: &'_ str,
parameter_types: &'_ [Type]
) -> Result<Statement, Error>
Like Client::prepare_typed
.
pub async fn query<T>(
&'_ self,
statement: &'_ T,
params: &'_ [&'_ (dyn ToSql + '_ + Sync)]
) -> Result<Vec<Row>, Error> where
T: ToStatement + ?Sized,
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&'_ self,
statement: &'_ T,
params: &'_ [&'_ (dyn ToSql + '_ + Sync)]
) -> Result<Vec<Row>, Error> where
T: ToStatement + ?Sized,
Like Client::query
.
pub async fn query_one<T>(
&'_ self,
statement: &'_ T,
params: &'_ [&'_ (dyn ToSql + '_ + Sync)]
) -> Result<Row, Error> where
T: ToStatement + ?Sized,
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&'_ self,
statement: &'_ T,
params: &'_ [&'_ (dyn ToSql + '_ + Sync)]
) -> Result<Row, Error> where
T: ToStatement + ?Sized,
Like Client::query_one
.
pub async fn query_opt<T>(
&'_ self,
statement: &'_ T,
params: &'_ [&'_ (dyn ToSql + '_ + Sync)]
) -> Result<Option<Row>, Error> where
T: ToStatement + ?Sized,
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&'_ self,
statement: &'_ T,
params: &'_ [&'_ (dyn ToSql + '_ + Sync)]
) -> Result<Option<Row>, Error> where
T: ToStatement + ?Sized,
Like Client::query_opt
.
pub async fn query_raw<'b, T, I>(
&'_ self,
statement: &'_ T,
params: I
) -> Result<RowStream, Error> where
I: IntoIterator<Item = &'b (dyn ToSql + 'b)>,
T: ToStatement + ?Sized,
<I as IntoIterator>::IntoIter: ExactSizeIterator,
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&'_ self,
statement: &'_ T,
params: I
) -> Result<RowStream, Error> where
I: IntoIterator<Item = &'b (dyn ToSql + 'b)>,
T: ToStatement + ?Sized,
<I as IntoIterator>::IntoIter: ExactSizeIterator,
Like Client::query_raw
.
pub async fn execute<T>(
&'_ self,
statement: &'_ T,
params: &'_ [&'_ (dyn ToSql + '_ + Sync)]
) -> Result<u64, Error> where
T: ToStatement + ?Sized,
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&'_ self,
statement: &'_ T,
params: &'_ [&'_ (dyn ToSql + '_ + Sync)]
) -> Result<u64, Error> where
T: ToStatement + ?Sized,
Like Client::execute
.
pub async fn execute_raw<'b, I, T>(
&'_ self,
statement: &'_ T,
params: I
) -> Result<u64, Error> where
I: IntoIterator<Item = &'b (dyn ToSql + 'b)>,
T: ToStatement + ?Sized,
<I as IntoIterator>::IntoIter: ExactSizeIterator,
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&'_ self,
statement: &'_ T,
params: I
) -> Result<u64, Error> where
I: IntoIterator<Item = &'b (dyn ToSql + 'b)>,
T: ToStatement + ?Sized,
<I as IntoIterator>::IntoIter: ExactSizeIterator,
Like Client::execute_iter
.
pub async fn bind<T>(
&'_ self,
statement: &'_ T,
params: &'_ [&'_ (dyn ToSql + '_ + Sync)]
) -> Result<Portal, Error> where
T: ToStatement + ?Sized,
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&'_ self,
statement: &'_ T,
params: &'_ [&'_ (dyn ToSql + '_ + Sync)]
) -> Result<Portal, Error> where
T: ToStatement + ?Sized,
Binds a statement to a set of parameters, creating a Portal
which can be incrementally queried.
Portals only last for the duration of the transaction in which they are created, and can only be used on the connection that created them.
Panics
Panics if the number of parameters provided does not match the number expected.
pub async fn bind_raw<'b, T, I>(
&'_ self,
statement: &'_ T,
params: I
) -> Result<Portal, Error> where
I: IntoIterator<Item = &'b (dyn ToSql + 'b)>,
T: ToStatement + ?Sized,
<I as IntoIterator>::IntoIter: ExactSizeIterator,
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&'_ self,
statement: &'_ T,
params: I
) -> Result<Portal, Error> where
I: IntoIterator<Item = &'b (dyn ToSql + 'b)>,
T: ToStatement + ?Sized,
<I as IntoIterator>::IntoIter: ExactSizeIterator,
A maximally flexible version of bind
.
pub async fn query_portal(
&'_ self,
portal: &'_ Portal,
max_rows: i32
) -> Result<Vec<Row>, Error>
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&'_ self,
portal: &'_ Portal,
max_rows: i32
) -> Result<Vec<Row>, Error>
Continues execution of a portal, returning a stream of the resulting rows.
Unlike query
, portals can be incrementally evaluated by limiting the number of rows returned in each call to
query_portal
. If the requested number is negative or 0, all rows will be returned.
pub async fn query_portal_raw(
&'_ self,
portal: &'_ Portal,
max_rows: i32
) -> Result<RowStream, Error>
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&'_ self,
portal: &'_ Portal,
max_rows: i32
) -> Result<RowStream, Error>
The maximally flexible version of query_portal
.
pub async fn copy_in<T, U>(
&'_ self,
statement: &'_ T
) -> Result<CopyInSink<U>, Error> where
T: ToStatement + ?Sized,
U: Buf + 'static + Send,
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&'_ self,
statement: &'_ T
) -> Result<CopyInSink<U>, Error> where
T: ToStatement + ?Sized,
U: Buf + 'static + Send,
Like Client::copy_in
.
pub async fn copy_out<T>(
&'_ self,
statement: &'_ T
) -> Result<CopyOutStream, Error> where
T: ToStatement + ?Sized,
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&'_ self,
statement: &'_ T
) -> Result<CopyOutStream, Error> where
T: ToStatement + ?Sized,
Like Client::copy_out
.
pub async fn simple_query(
&'_ self,
query: &'_ str
) -> Result<Vec<SimpleQueryMessage>, Error>
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&'_ self,
query: &'_ str
) -> Result<Vec<SimpleQueryMessage>, Error>
Like Client::simple_query
.
pub async fn batch_execute(&'_ self, query: &'_ str) -> Result<(), Error>
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Like Client::batch_execute
.
pub fn cancel_token(&self) -> CancelToken
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Like Client::cancel_token
.
pub async fn cancel_query<T>(&'_ self, tls: T) -> Result<(), Error> where
T: MakeTlsConnect<Socket>,
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T: MakeTlsConnect<Socket>,
use Transaction::cancel_token() instead
Like Client::cancel_query
.
pub async fn cancel_query_raw<S, T>(
&'_ self,
stream: S,
tls: T
) -> Result<(), Error> where
S: AsyncRead + AsyncWrite + Unpin,
T: TlsConnect<S>,
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&'_ self,
stream: S,
tls: T
) -> Result<(), Error> where
S: AsyncRead + AsyncWrite + Unpin,
T: TlsConnect<S>,
use Transaction::cancel_token() instead
Like Client::cancel_query_raw
.
pub async fn transaction(&'_ mut self) -> Result<Transaction<'_>, Error>
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Like Client::transaction
, but creates a nested transaction via a savepoint.
pub async fn savepoint<I>(
&'_ mut self,
name: I
) -> Result<Transaction<'_>, Error> where
I: Into<String>,
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&'_ mut self,
name: I
) -> Result<Transaction<'_>, Error> where
I: Into<String>,
Like Client::transaction
, but creates a nested transaction via a savepoint with the specified name.
Trait Implementations
impl<'a> Deref for Transaction<'a>
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type Target = PgTransaction<'a>
The resulting type after dereferencing.
fn deref(&self) -> &PgTransaction<'a>
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impl<'a> DerefMut for Transaction<'a>
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fn deref_mut(&mut self) -> &mut PgTransaction<'a>
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Auto Trait Implementations
impl<'a> !RefUnwindSafe for Transaction<'a>
impl<'a> Send for Transaction<'a>
impl<'a> Sync for Transaction<'a>
impl<'a> Unpin for Transaction<'a>
impl<'a> !UnwindSafe for Transaction<'a>
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Same<T> for T
type Output = T
Should always be Self
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,