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{- types for SQL databases
-
- Copyright 2015 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE TemplateHaskell #-}
module Database.Types where
import Database.Persist.TH
import Data.Maybe
import Types.Key
import Utility.InodeCache
-- A serialized Key
newtype SKey = SKey String
deriving (Show, Read)
toSKey :: Key -> SKey
toSKey = SKey . key2file
fromSKey :: SKey -> Key
fromSKey (SKey s) = fromMaybe (error $ "bad serialied Key " ++ s) (file2key s)
derivePersistField "SKey"
-- A serialized InodeCache
newtype SInodeCache = I String
deriving (Show, Read)
toSInodeCache :: InodeCache -> SInodeCache
toSInodeCache = I . showInodeCache
fromSInodeCache :: SInodeCache -> InodeCache
fromSInodeCache (I s) = fromMaybe (error $ "bad serialied InodeCache " ++ s) (readInodeCache s)
derivePersistField "SInodeCache"
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