From 27e11b20b06f2f2dbfb56c0998a63169b4b8abc4 Mon Sep 17 00:00:00 2001 From: Joris Date: Wed, 8 Nov 2017 23:47:26 +0100 Subject: Use a better project structure --- src/server/Model/Query.hs | 32 -------------------------------- 1 file changed, 32 deletions(-) delete mode 100644 src/server/Model/Query.hs (limited to 'src/server/Model/Query.hs') diff --git a/src/server/Model/Query.hs b/src/server/Model/Query.hs deleted file mode 100644 index d15fb5f..0000000 --- a/src/server/Model/Query.hs +++ /dev/null @@ -1,32 +0,0 @@ -module Model.Query - ( Query(..) - , run - ) where - -import Data.Functor (Functor) -import Database.SQLite.Simple (Connection) -import qualified Database.SQLite.Simple as SQLite - -data Query a = Query (Connection -> IO a) - -instance Functor Query where - fmap f (Query call) = Query (fmap f . call) - -instance Applicative Query where - pure x = Query (const $ return x) - (Query callF) <*> (Query callX) = Query (\conn -> do - x <- callX conn - f <- callF conn - return (f x)) - -instance Monad Query where - (Query callX) >>= f = Query (\conn -> do - x <- callX conn - case f x of Query callY -> callY conn) - -run :: Query a -> IO a -run (Query call) = do - conn <- SQLite.open "database" - result <- call conn - _ <- SQLite.close conn - return result -- cgit v1.2.3