我认为您正在定义什么是事件检测，您是否尝试过以下方法：

val start: Pattern[Record, _] = myStream
   .begin("first").where(name == "A")
   .followedBy("second").where(name == "A")

更新：例如：

val patternIG: Pattern[(String,String), _] = Pattern.begin[String,String)]("start").where(_.name == "Ignition").where(_.ac == "ON").next("end").where(_.name == "Door").where(_.ac == "ON")
val patternStream: PatternStream[(String,String)] = CEP.pattern(mystream, patternIG)
def selectFn(pattern : mutable.Map[String,(String,String)]): String = {
val startEvent = pattern.get("start").get
val endEvent = pattern.get("end").get
  "ALERT Door Open"
}
val patternStreamSelected = patternStream.select(selectFn(_)).print()