sparkle-0.3: src/Control/Distributed/Spark/SQL/Context.hs

{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}

module Control.Distributed.Spark.SQL.Context where

import Control.Distributed.Spark.Context
import Language.Java

newtype SQLContext = SQLContext (J ('Class "org.apache.spark.sql.SQLContext"))
instance Coercible SQLContext ('Class "org.apache.spark.sql.SQLContext")

newSQLContext :: SparkContext -> IO SQLContext
newSQLContext sc = new [coerce sc]

getOrCreateSQLContext :: SparkContext -> IO SQLContext
getOrCreateSQLContext jsc = do
  sc :: J ('Class "org.apache.spark.SparkContext") <- call jsc "sc" []
  callStatic (classOf (undefined :: SQLContext))
             "getOrCreate"
             [coerce sc]