object Main extends App {
	val text = "S3//bucket//TS11_YREDED.2018_09_28_02.orc"
    val reg = """(?:.*/)?(.*)\.(\d{4})_(\d{2})_(\d{2})_\d{2}\.orc""".r
    var YEAR = "YEAR"
	var MONTH = "MONTH"
	var DAY = "DAY"
	var FILE_NAME = "FILE_NAME"
 
    val dataExtraction: String => Map[String, String] = {
	  string: String => {
	    string match {
	      case reg(filename, year, month, day) =>
	                 Map(FILE_NAME-> filename, YEAR -> year, MONTH -> month, DAY -> day)
	      case _  => Map(FILE_NAME-> FILE_NAME,YEAR -> YEAR, MONTH -> MONTH, DAY -> DAY)
	    }
	  }
	}
 
	println(dataExtraction(text))
}

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