Safe Haskell	Safe-Inferred
Language	Haskell2010

Database.MSSQL.Pool

Description

MSSQL Connection Pooling

Synopsis

newtype ConnectionString = ConnectionString {
- unConnectionString :: Text
}
data ConnectionOptions
- = ConnectionOptions {
  - _coConnections :: Int
  - _coStripes :: Int
  - _coIdleTime :: Int
  }
- | ConnectionOptionsNoPool
data MSSQLPool
- = MSSQLPool (Pool Connection)
- | MSSQLNoPool (IO Connection)
initMSSQLPool :: ConnectionString -> ConnectionOptions -> IO MSSQLPool
drainMSSQLPool :: MSSQLPool -> IO ()
withMSSQLPool :: MonadBaseControl IO m => MSSQLPool -> (Connection -> m a) -> m (Either ODBCException a)
resizePool :: MSSQLPool -> Int -> IO ()
getInUseConnections :: MSSQLPool -> IO Int

Documentation

newtype ConnectionString Source #

ODBC connection string for MSSQL server

Constructors

ConnectionString
Fields unConnectionString :: Text

Instances

Instances details

FromJSON ConnectionString Source #
Instance details Defined in Database.MSSQL.Pool Methods parseJSON :: Value -> Parser ConnectionString Source # parseJSONList :: Value -> Parser [ConnectionString] Source #
ToJSON ConnectionString Source #
Instance details Defined in Database.MSSQL.Pool Methods toJSON :: ConnectionString -> Value Source # toEncoding :: ConnectionString -> Encoding Source # toJSONList :: [ConnectionString] -> Value Source # toEncodingList :: [ConnectionString] -> Encoding Source #
HasCodec ConnectionString Source #
Instance details Defined in Database.MSSQL.Pool Methods codec :: JSONCodec ConnectionString Source # listCodecForStringCompatibility :: JSONCodec [ConnectionString] Source #
Generic ConnectionString Source #
Instance details Defined in Database.MSSQL.Pool Associated Types type Rep ConnectionString :: Type -> Type # Methods from :: ConnectionString -> Rep ConnectionString x # to :: Rep ConnectionString x -> ConnectionString #
Show ConnectionString Source #
Instance details Defined in Database.MSSQL.Pool Methods showsPrec :: Int -> ConnectionString -> ShowS # show :: ConnectionString -> String # showList :: [ConnectionString] -> ShowS #
NFData ConnectionString Source #
Instance details Defined in Hasura.Backends.MSSQL.Connection Methods rnf :: ConnectionString -> () #
Eq ConnectionString Source #
Instance details Defined in Database.MSSQL.Pool Methods (==) :: ConnectionString -> ConnectionString -> Bool # (/=) :: ConnectionString -> ConnectionString -> Bool #
Hashable ConnectionString Source #
Instance details Defined in Hasura.Backends.MSSQL.Connection Methods hashWithSalt :: Int -> ConnectionString -> Int Source # hash :: ConnectionString -> Int Source #
type Rep ConnectionString Source #
Instance details Defined in Database.MSSQL.Pool type Rep ConnectionString = D1 ('MetaData "ConnectionString" "Database.MSSQL.Pool" "graphql-engine-1.0.0-inplace" 'True) (C1 ('MetaCons "ConnectionString" 'PrefixI 'True) (S1 ('MetaSel ('Just "unConnectionString") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 Text)))

data ConnectionOptions Source #

Constructors

ConnectionOptions
Fields _coConnections :: Int _coStripes :: Int _coIdleTime :: Int
ConnectionOptionsNoPool

Instances

Instances details

Show ConnectionOptions Source #
Instance details Defined in Database.MSSQL.Pool Methods showsPrec :: Int -> ConnectionOptions -> ShowS # show :: ConnectionOptions -> String # showList :: [ConnectionOptions] -> ShowS #
Eq ConnectionOptions Source #
Instance details Defined in Database.MSSQL.Pool Methods (==) :: ConnectionOptions -> ConnectionOptions -> Bool # (/=) :: ConnectionOptions -> ConnectionOptions -> Bool #

data MSSQLPool Source #

ODBC connection pool

Constructors

MSSQLPool (Pool Connection)
MSSQLNoPool (IO Connection)

initMSSQLPool :: ConnectionString -> ConnectionOptions -> IO MSSQLPool Source #

Initialize an MSSQL pool with given connection configuration

drainMSSQLPool :: MSSQLPool -> IO () Source #

Destroy all pool resources

withMSSQLPool :: MonadBaseControl IO m => MSSQLPool -> (Connection -> m a) -> m (Either ODBCException a) Source #

resizePool :: MSSQLPool -> Int -> IO () Source #

Resize a pool

getInUseConnections :: MSSQLPool -> IO Int Source #