Safe Haskell	Safe-Inferred
Language	Haskell2010

Hasql.TestingUtils.TestingDsl

Synopsis

Documentation

A batch of actions to be executed in the context of a database connection.

Instances details

MonadIO Session
Instance details Defined in Hasql.Session.Core Methods liftIO :: IO a -> Session a #
Applicative Session
Instance details Defined in Hasql.Session.Core Methods pure :: a -> Session a # (<>) :: Session (a -> b) -> Session a -> Session b # liftA2 :: (a -> b -> c) -> Session a -> Session b -> Session c # (>) :: Session a -> Session b -> Session b # (<*) :: Session a -> Session b -> Session a #
Functor Session
Instance details Defined in Hasql.Session.Core Methods fmap :: (a -> b) -> Session a -> Session b # (<$) :: a -> Session b -> Session a #
Monad Session
Instance details Defined in Hasql.Session.Core Methods (>>=) :: Session a -> (a -> Session b) -> Session b # (>>) :: Session a -> Session b -> Session b # return :: a -> Session a #
MonadError QueryError Session
Instance details Defined in Hasql.Session.Core Methods throwError :: QueryError -> Session a # catchError :: Session a -> (QueryError -> Session a) -> Session a #
MonadReader Connection Session
Instance details Defined in Hasql.Session.Core Methods ask :: Session Connection # local :: (Connection -> Connection) -> Session a -> Session a # reader :: (Connection -> a) -> Session a #

Constructors

ConnectionError ConnectionError
SessionError QueryError

Instances details

Show SessionError Source #
Instance details Defined in Hasql.TestingUtils.TestingDsl Methods showsPrec :: Int -> SessionError -> ShowS # show :: SessionError -> String # showList :: [SessionError] -> ShowS #
Eq SessionError Source #
Instance details Defined in Hasql.TestingUtils.TestingDsl Methods (==) :: SessionError -> SessionError -> Bool # (/=) :: SessionError -> SessionError -> Bool #

An error during the execution of a query. Comes packed with the query template and a textual representation of the provided params.

Constructors

Instances details

Exception QueryError
Instance details Defined in Hasql.Errors Methods toException :: QueryError -> SomeException # fromException :: SomeException -> Maybe QueryError # displayException :: QueryError -> String #
Show QueryError
Instance details Defined in Hasql.Errors Methods showsPrec :: Int -> QueryError -> ShowS # show :: QueryError -> String # showList :: [QueryError] -> ShowS #
Eq QueryError
Instance details Defined in Hasql.Errors Methods (==) :: QueryError -> QueryError -> Bool # (/=) :: QueryError -> QueryError -> Bool #
MonadError QueryError Session
Instance details Defined in Hasql.Session.Core Methods throwError :: QueryError -> Session a # catchError :: Session a -> (QueryError -> Session a) -> Session a #

An error of some command in the session.

Constructors

ClientError (Maybe ByteString)	An error on the client-side, with a message generated by the "libpq" library. Usually indicates problems with connection.
ResultError ResultError	Some error with a command result.

Instances details

Show CommandError
Instance details Defined in Hasql.Errors Methods showsPrec :: Int -> CommandError -> ShowS # show :: CommandError -> String # showList :: [CommandError] -> ShowS #
Eq CommandError
Instance details Defined in Hasql.Errors Methods (==) :: CommandError -> CommandError -> Bool # (/=) :: CommandError -> CommandError -> Bool #