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