Struct c3p0_pool_pg::r2d2::postgres::transaction::Transaction

pub struct Transaction<'conn> { /* fields omitted */ }

A transaction on a database connection.

The transaction will roll back by default.

Methods

impl<'conn> Transaction<'conn>

pub fn prepare(&self, query: &str) -> Result<Statement<'conn>, Error>

Like Connection::prepare.

pub fn prepare_cached(&self, query: &str) -> Result<Statement<'conn>, Error>

Like Connection::prepare_cached.

Note

The statement will be cached for the duration of the connection, not just the duration of this transaction.

pub fn execute(&self, query: &str, params: &[&dyn ToSql]) -> Result<u64, Error>

Like Connection::execute.

pub fn query(
    &'a self,
    query: &str,
    params: &[&dyn ToSql]
) -> Result<Rows, Error>

Like Connection::query.

pub fn batch_execute(&self, query: &str) -> Result<(), Error>

Like Connection::batch_execute.

pub fn transaction(&'a self) -> Result<Transaction<'a>, Error>

Like Connection::transaction, but creates a nested transaction via a savepoint.

Panics

Panics if there is an active nested transaction.

pub fn savepoint(&'a self, name: &str) -> Result<Transaction<'a>, Error>

Like Connection::transaction, but creates a nested transaction via a savepoint with the specified name.

Panics

Panics if there is an active nested transaction.

pub fn connection(&self) -> &'conn Connection

Returns a reference to the Transaction's Connection.

pub fn is_active(&self) -> bool

Like Connection::is_active.

pub fn set_config(&self, config: &Config) -> Result<(), Error>

Alters the configuration of the active transaction.

pub fn will_commit(&self) -> bool

Determines if the transaction is currently set to commit or roll back.

pub fn set_commit(&self)

Sets the transaction to commit at its completion.

pub fn set_rollback(&self)

Sets the transaction to roll back at its completion.

pub fn commit(self) -> Result<(), Error>

A convenience method which consumes and commits a transaction.

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

Consumes the transaction, commiting or rolling it back as appropriate.

Functionally equivalent to the Drop implementation of Transaction except that it returns any error to the caller.

Trait Implementations

impl<'a> Debug for Transaction<'a>

fn fmt(&self, fmt: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl<'a> GenericConnection for Transaction<'a>

fn execute(&self, query: &str, params: &[&dyn ToSql]) -> Result<u64, Error>

Like Connection::execute.

fn query(&'b self, query: &str, params: &[&dyn ToSql]) -> Result<Rows, Error>

Like Connection::query.

fn prepare(&'b self, query: &str) -> Result<Statement<'b>, Error>

Like Connection::prepare.

fn prepare_cached(&'b self, query: &str) -> Result<Statement<'b>, Error>

Like Connection::prepare_cached.

fn transaction(&'b self) -> Result<Transaction<'b>, Error>

Like Connection::transaction.

fn batch_execute(&self, query: &str) -> Result<(), Error>

Like Connection::batch_execute.

fn is_active(&self) -> bool

Like Connection::is_active.

impl<'conn> Drop for Transaction<'conn>

fn drop(&mut self)

Executes the destructor for this type.