Database.Persist.GenericSql

This is a helper module for creating SQL backends. Regular users do not need to use this module.

Documentation

newtype SqlPersist m a

Constructors

SqlPersist (ReaderT Connection m a)

Instances

MonadTrans SqlPersist

Monad m => Monad (SqlPersist m)

Functor m => Functor (SqlPersist m)

Applicative m => Applicative (SqlPersist m)

MonadCatchIO m => MonadCatchIO (SqlPersist m)

MonadIO m => MonadIO (SqlPersist m)

MonadCatchIO m => PersistBackend (SqlPersist m)

data Connection

type ConnectionPool = Pool Connection

data Statement

runSqlConn :: MonadCatchIO m => SqlPersist m a -> Connection -> m a

runSqlPool :: MonadCatchIO m => SqlPersist m a -> Pool Connection -> m a

type Migration m = WriterT [String] (WriterT CautiousMigration m) ()

parseMigration :: Monad m => Migration m -> m (Either [String] CautiousMigration)

parseMigration' :: Monad m => Migration m -> m CautiousMigration

printMigration :: MonadCatchIO m => Migration (SqlPersist m) -> SqlPersist m ()

getMigration :: MonadCatchIO m => Migration (SqlPersist m) -> SqlPersist m [Sql]

runMigration :: MonadCatchIO m => Migration (SqlPersist m) -> SqlPersist m ()

runMigrationUnsafe :: MonadCatchIO m => Migration (SqlPersist m) -> SqlPersist m ()

migrate :: (MonadCatchIO m, PersistEntity val) => val -> Migration (SqlPersist m)