Development Cycle – Develop Scala application using SBT in IntelliJ

Create a scala program

• Right click on scala -> new -> scala class
• Choose scala object and give the object name and hit enter
• Copy the code which we have seen earlier
• Pass the arguments as mentioned in the video
• Run the program

Example

import scala.io.Source
object OrderRevenue {
  def main(args: Array[String]) = {
    val orderId = args(0).toInt
    val orderItems = Source.fromFile("/home/dgadiraju/data/retail_db/order_items/part-00000").getLines
    val orderRevenue = orderItems.filter(oi => oi.split(",")(1).toInt == orderId).
      map(oi => oi.split(",")(4).toFloat).
      reduce((t, v) => t + v)
    println(orderRevenue)
  }
}