Struct diesel::connection::AnsiTransactionManager

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pub struct AnsiTransactionManager { /* private fields */ }
Expand description

An implementation of TransactionManager which can be used for backends which use ANSI standard syntax for savepoints such as SQLite and PostgreSQL.

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impl AnsiTransactionManager

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pub fn begin_transaction_sql<Conn>( conn: &mut Conn, sql: &str, ) -> QueryResult<()>
where Conn: Connection<TransactionManager = Self>,

Begin a transaction with custom SQL

This is used by connections to implement more complex transaction APIs to set things such as isolation levels. Returns an error if already inside of a transaction.

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impl Debug for AnsiTransactionManager

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

Formats the value using the given formatter. Read more
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impl Default for AnsiTransactionManager

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fn default() -> AnsiTransactionManager

Returns the “default value” for a type. Read more
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impl<Conn> TransactionManager<Conn> for AnsiTransactionManager
where Conn: Connection<TransactionManager = Self>,

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fn commit_transaction(conn: &mut Conn) -> QueryResult<()>

If the transaction fails to commit due to a SerializationFailure or a ReadOnlyTransaction a rollback will be attempted. If the rollback succeeds, the original error will be returned, otherwise the error generated by the rollback will be returned. In the second case the connection will be considered broken as it contains a uncommitted unabortable open transaction.

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type TransactionStateData = AnsiTransactionManager

Data stored as part of the connection implementation to track the current transaction state of a connection
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fn begin_transaction(conn: &mut Conn) -> QueryResult<()>

Begin a new transaction or savepoint Read more
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fn rollback_transaction(conn: &mut Conn) -> QueryResult<()>

Rollback the inner-most transaction or savepoint Read more
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fn transaction_manager_status_mut( conn: &mut Conn, ) -> &mut TransactionManagerStatus

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
Fetch the current transaction status as mutable Read more
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fn transaction<F, R, E>(conn: &mut Conn, callback: F) -> Result<R, E>
where F: FnOnce(&mut Conn) -> Result<R, E>, E: From<Error>,

Executes the given function inside of a database transaction Read more
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fn is_broken_transaction_manager(conn: &mut Conn) -> bool

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
This methods checks if the connection manager is considered to be broken by connection pool implementations Read more

Auto Trait Implementations§

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, 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> IntoSql for T

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fn into_sql<T>(self) -> AsExprOf<Self, T>

Convert self to an expression for Diesel’s query builder. Read more
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fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>

Convert &self to an expression for Diesel’s query builder. 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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V