Hasql.TestingUtils.TestingDsl

Documentation

data Session a

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

Instances

MonadIO Session

Defined in Hasql.Session.Core

Methods

liftIO :: IO a -> Session a

Applicative Session

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

Defined in Hasql.Session.Core

Methods

fmap :: (a -> b) -> Session a -> Session b

(<$) :: a -> Session b -> Session a

Monad Session

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

Defined in Hasql.Session.Core

Methods

throwError :: QueryError -> Session a

catchError :: Session a -> (QueryError -> Session a) -> Session a

MonadReader Connection Session

Defined in Hasql.Session.Core

Methods

ask :: Session Connection

local :: (Connection -> Connection) -> Session a -> Session a

reader :: (Connection -> a) -> Session a

data SessionError

Constructors

ConnectionError ConnectionError

SessionError QueryError

Instances

Show SessionError

Defined in Hasql.TestingUtils.TestingDsl

Methods

showsPrec :: Int -> SessionError -> ShowS

show :: SessionError -> String

showList :: [SessionError] -> ShowS

Eq SessionError

Defined in Hasql.TestingUtils.TestingDsl

Methods

(==) :: SessionError -> SessionError -> Bool

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

data QueryError

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

Constructors

QueryError ByteString [Text] CommandError

Instances

Exception QueryError

Defined in Hasql.Errors

Methods

toException :: QueryError -> SomeException

fromException :: SomeException -> Maybe QueryError

displayException :: QueryError -> String

Show QueryError

Defined in Hasql.Errors

Methods

showsPrec :: Int -> QueryError -> ShowS

show :: QueryError -> String

showList :: [QueryError] -> ShowS

Eq QueryError

Defined in Hasql.Errors

Methods

(==) :: QueryError -> QueryError -> Bool

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

MonadError QueryError Session

Defined in Hasql.Session.Core

Methods

throwError :: QueryError -> Session a

catchError :: Session a -> (QueryError -> Session a) -> Session a

data CommandError

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

Show CommandError

Defined in Hasql.Errors

Methods

showsPrec :: Int -> CommandError -> ShowS

show :: CommandError -> String

showList :: [CommandError] -> ShowS

Eq CommandError

Defined in Hasql.Errors

Methods

(==) :: CommandError -> CommandError -> Bool

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

runSessionOnLocalDb :: Session a -> IO (Either SessionError a)

runStatementInSession :: Statement a b -> a -> Session b