Struct postgres::transaction::Transaction
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pub struct Transaction<'conn> { /* fields omitted */ }
A transaction on a database connection.
The transaction will roll back by default.
Methods
impl<'conn> Transaction<'conn>
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fn prepare(&self, query: &str) -> Result<Statement<'conn>>
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Like Connection::prepare
.
fn prepare_cached(&self, query: &str) -> Result<Statement<'conn>>
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Like Connection::prepare_cached
.
Note
The statement will be cached for the duration of the connection, not just the duration of this transaction.
fn execute(&self, query: &str, params: &[&ToSql]) -> Result<u64>
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Like Connection::execute
.
fn query<'a>(&'a self, query: &str, params: &[&ToSql]) -> Result<Rows>
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Like Connection::query
.
fn batch_execute(&self, query: &str) -> Result<()>
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Like Connection::batch_execute
.
fn transaction<'a>(&'a self) -> Result<Transaction<'a>>
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Like Connection::transaction
, but creates a nested transaction via
a savepoint.
Panics
Panics if there is an active nested transaction.
fn savepoint<'a>(&'a self, name: &str) -> Result<Transaction<'a>>
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Like Connection::transaction
, but creates a nested transaction via
a savepoint with the specified name.
Panics
Panics if there is an active nested transaction.
fn connection(&self) -> &'conn Connection
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Returns a reference to the Transaction
's Connection
.
fn is_active(&self) -> bool
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Like Connection::is_active
.
fn set_config(&self, config: &Config) -> Result<()>
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Alters the configuration of the active transaction.
fn will_commit(&self) -> bool
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Determines if the transaction is currently set to commit or roll back.
fn set_commit(&self)
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Sets the transaction to commit at its completion.
fn set_rollback(&self)
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Sets the transaction to roll back at its completion.
fn commit(self) -> Result<()>
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A convenience method which consumes and commits a transaction.
fn finish(self) -> Result<()>
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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>
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impl<'conn> Drop for Transaction<'conn>
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impl<'a> GenericConnection for Transaction<'a>
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fn execute(&self, query: &str, params: &[&ToSql]) -> Result<u64>
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Like Connection::execute
.
fn query<'b>(&'b self, query: &str, params: &[&ToSql]) -> Result<Rows>
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Like Connection::query
.
fn prepare<'b>(&'b self, query: &str) -> Result<Statement<'b>>
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Like Connection::prepare
.
fn prepare_cached<'b>(&'b self, query: &str) -> Result<Statement<'b>>
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Like Connection::prepare_cached
.
fn transaction<'b>(&'b self) -> Result<Transaction<'b>>
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Like Connection::transaction
.
fn batch_execute(&self, query: &str) -> Result<()>
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Like Connection::batch_execute
.
fn is_active(&self) -> bool
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Like Connection::is_active
.