Safe Haskell	None
Language	Haskell98

Database.Persist.Sqlite

Description

A sqlite backend for persistent.

Note: If you prepend WAL=off to your connection string, it will disable the write-ahead log. For more information, see https://github.com/yesodweb/persistent/issues/363.

Synopsis

Documentation

withSqlitePool Source #

Arguments

:: (MonadBaseControl IO m, MonadIO m, MonadLogger m)
=> Text
-> Int	number of connections to open
-> (ConnectionPool -> m a)
-> m a

Run the given action with a connection pool.

Like createSqlitePool, this should not be used with :memory:.

withSqliteConn :: (MonadBaseControl IO m, MonadIO m, MonadLogger m) => Text -> (SqlBackend -> m a) -> m a Source #

createSqlitePool :: (MonadIO m, MonadLogger m, MonadBaseControl IO m) => Text -> Int -> m ConnectionPool Source #

Create a pool of SQLite connections.

Note that this should not be used with the :memory: connection string, as the pool will regularly remove connections, destroying your database. Instead, use withSqliteConn.

module Database.Persist.Sql

data SqliteConf Source #

Information required to connect to a sqlite database

Constructors

SqliteConf
Fields sqlDatabase :: Text sqlPoolSize :: Int

Instances

Show SqliteConf Source #
Methods showsPrec :: Int -> SqliteConf -> ShowS # show :: SqliteConf -> String # showList :: [SqliteConf] -> ShowS #
FromJSON SqliteConf Source #
Methods parseJSON :: Value -> Parser SqliteConf # parseJSONList :: Value -> Parser [SqliteConf] #
PersistConfig SqliteConf Source #
Associated Types type PersistConfigBackend SqliteConf :: (* -> ) -> -> * # type PersistConfigPool SqliteConf :: * # Methods loadConfig :: Value -> Parser SqliteConf # applyEnv :: SqliteConf -> IO SqliteConf # createPoolConfig :: SqliteConf -> IO (PersistConfigPool SqliteConf) # runPool :: (MonadBaseControl IO m, MonadIO m) => SqliteConf -> PersistConfigBackend SqliteConf m a -> PersistConfigPool SqliteConf -> m a #
type PersistConfigPool SqliteConf Source #
type PersistConfigPool SqliteConf = ConnectionPool
type PersistConfigBackend SqliteConf Source #
type PersistConfigBackend SqliteConf = SqlPersistT

runSqlite Source #

Arguments

:: (MonadBaseControl IO m, MonadIO m)
=> Text	connection string
-> SqlPersistT (NoLoggingT (ResourceT m)) a	database action
-> m a

A convenience helper which creates a new database connection and runs the given block, handling MonadResource and MonadLogger requirements. Note that all log messages are discarded.

Since 1.1.4

wrapConnection :: Connection -> LogFunc -> IO SqlBackend Source #

Wrap up a raw Connection as a Persistent SQL Connection.

Since 1.1.5

mockMigration :: Migration -> IO () Source #

Mock a migration even when the database is not present. This function performs the same functionality of printMigration with the difference that an actualy database isn't needed for it.