Safe Haskell	None
Language	Haskell2010

Hasql.Transaction.Sessions

Contents

Transaction settings

Synopsis

transaction :: IsolationLevel -> Mode -> Transaction a -> Session a
data Mode
- = Read
- | Write
data IsolationLevel
- = ReadCommitted
- | RepeatableRead
- | Serializable

Documentation

transaction :: IsolationLevel -> Mode -> Transaction a -> Session a Source #

Execute the transaction using the provided isolation level and mode.

Transaction settings

data Mode Source #

Constructors

Read	Read-only. No writes possible.
Write	Write and commit.

Instances

Bounded Mode Source #
Instance details Defined in Hasql.Transaction.Private.Model Methods minBound :: Mode # maxBound :: Mode #
Enum Mode Source #
Instance details Defined in Hasql.Transaction.Private.Model Methods succ :: Mode -> Mode # pred :: Mode -> Mode # toEnum :: Int -> Mode # fromEnum :: Mode -> Int # enumFrom :: Mode -> [Mode] # enumFromThen :: Mode -> Mode -> [Mode] # enumFromTo :: Mode -> Mode -> [Mode] # enumFromThenTo :: Mode -> Mode -> Mode -> [Mode] #
Eq Mode Source #
Instance details Defined in Hasql.Transaction.Private.Model Methods (==) :: Mode -> Mode -> Bool # (/=) :: Mode -> Mode -> Bool #
Ord Mode Source #
Instance details Defined in Hasql.Transaction.Private.Model Methods compare :: Mode -> Mode -> Ordering # (<) :: Mode -> Mode -> Bool # (<=) :: Mode -> Mode -> Bool # (>) :: Mode -> Mode -> Bool # (>=) :: Mode -> Mode -> Bool # max :: Mode -> Mode -> Mode # min :: Mode -> Mode -> Mode #
Show Mode Source #
Instance details Defined in Hasql.Transaction.Private.Model Methods showsPrec :: Int -> Mode -> ShowS # show :: Mode -> String # showList :: [Mode] -> ShowS #

data IsolationLevel Source #

For reference see the Postgres' documentation.

Constructors

ReadCommitted
RepeatableRead
Serializable

Instances

Bounded IsolationLevel Source #
Instance details Defined in Hasql.Transaction.Private.Model Methods minBound :: IsolationLevel # maxBound :: IsolationLevel #
Enum IsolationLevel Source #
Instance details Defined in Hasql.Transaction.Private.Model Methods succ :: IsolationLevel -> IsolationLevel # pred :: IsolationLevel -> IsolationLevel # toEnum :: Int -> IsolationLevel # fromEnum :: IsolationLevel -> Int # enumFrom :: IsolationLevel -> [IsolationLevel] # enumFromThen :: IsolationLevel -> IsolationLevel -> [IsolationLevel] # enumFromTo :: IsolationLevel -> IsolationLevel -> [IsolationLevel] # enumFromThenTo :: IsolationLevel -> IsolationLevel -> IsolationLevel -> [IsolationLevel] #
Eq IsolationLevel Source #
Instance details Defined in Hasql.Transaction.Private.Model Methods (==) :: IsolationLevel -> IsolationLevel -> Bool # (/=) :: IsolationLevel -> IsolationLevel -> Bool #
Ord IsolationLevel Source #
Instance details Defined in Hasql.Transaction.Private.Model Methods compare :: IsolationLevel -> IsolationLevel -> Ordering # (<) :: IsolationLevel -> IsolationLevel -> Bool # (<=) :: IsolationLevel -> IsolationLevel -> Bool # (>) :: IsolationLevel -> IsolationLevel -> Bool # (>=) :: IsolationLevel -> IsolationLevel -> Bool # max :: IsolationLevel -> IsolationLevel -> IsolationLevel # min :: IsolationLevel -> IsolationLevel -> IsolationLevel #
Show IsolationLevel Source #
Instance details Defined in Hasql.Transaction.Private.Model Methods showsPrec :: Int -> IsolationLevel -> ShowS # show :: IsolationLevel -> String # showList :: [IsolationLevel] -> ShowS #