git-annex/Database/Utility.hs
2023-03-31 14:38:25 -04:00

27 lines
693 B
Haskell

{- Persistent sqlite database utilities.
-
- Copyright 2023 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# LANGUAGE TypeFamilies, CPP #-}
{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
module Database.Utility (
insertUniqueFast,
) where
import Control.Monad
import Database.Persist.Class
{- insertUnique_ is 2x as fast as insertUnique, so use when available.
-
- It would be difficult to write the type signature here, since older
- versions of persistent have different constraints on insertUnique.
-}
#if MIN_VERSION_persistent(2,14,5)
insertUniqueFast x = void (insertUnique_ x)
#else
insertUniqueFast x = void (insertUnique x)
#endif