Hasql.TransactionIO.Sessions

Documentation

transactionIO :: IsolationLevel -> Mode -> Deferrable -> TransactionIO a -> Session a

Run a prepared transaction with the given properties

unpreparedTransactionIO :: IsolationLevel -> Mode -> Deferrable -> TransactionIO a -> Session a

Run an unprepared transaction with the given properties

data IsolationLevel

A PostgreSQL transaction isolation level

Constructors

ReadCommitted

RepeatableRead

Serializable

Instances

Show IsolationLevel

Defined in Hasql.Private.Types

Methods

showsPrec :: Int -> IsolationLevel -> ShowS

show :: IsolationLevel -> String

showList :: [IsolationLevel] -> ShowS

Eq IsolationLevel

Defined in Hasql.Private.Types

Methods

(==) :: IsolationLevel -> IsolationLevel -> Bool

(/=) :: IsolationLevel -> IsolationLevel -> Bool

data Mode

A PostgreSQL transaction mode

Constructors

ReadWrite

ReadOnly

Instances

Show Mode

Defined in Hasql.Private.Types

Methods

showsPrec :: Int -> Mode -> ShowS

show :: Mode -> String

showList :: [Mode] -> ShowS

Eq Mode

Defined in Hasql.Private.Types

Methods

(==) :: Mode -> Mode -> Bool

(/=) :: Mode -> Mode -> Bool

data Deferrable

A PostgreSQL transaction deferrability designation

Constructors

Deferrable

NotDeferrable

Instances

Show Deferrable

Defined in Hasql.Private.Types

Methods

showsPrec :: Int -> Deferrable -> ShowS

show :: Deferrable -> String

showList :: [Deferrable] -> ShowS

Eq Deferrable

Defined in Hasql.Private.Types

Methods

(==) :: Deferrable -> Deferrable -> Bool

(/=) :: Deferrable -> Deferrable -> Bool