-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | A pool of connections for Hasql
--   
--   A pool of connections for Hasql
@package hasql-pool
@version 0.7

module Hasql.Pool

-- | A pool of connections to DB.
data Pool

-- | Given the pool-size and connection settings create a connection-pool.
acquire :: Int -> Settings -> IO Pool

-- | Release all the connections in the pool.
release :: Pool -> IO ()

-- | A union over the connection establishment error and the session error.
data UsageError
ConnectionUsageError :: ConnectionError -> UsageError
SessionUsageError :: QueryError -> UsageError
PoolIsReleasedUsageError :: UsageError

-- | Use a connection from the pool to run a session and return the
--   connection to the pool, when finished.
use :: Pool -> Session a -> IO (Either UsageError a)
instance GHC.Classes.Eq Hasql.Pool.UsageError
instance GHC.Show.Show Hasql.Pool.UsageError