如何在子类

Question

我希望子类在基类'apply方法中注入功能：

基类：

case class BaseClass(data: Json)

object BaseClass {
  def apply(data: String) : JsonClass = {
    try {
      _ //subclass functionality should go here
    } catch {
      case e: Exception => ErrorJsonClass(data)
    }
  }
}

object SubClass extends BaseClass {
  def apply(data: String) : Json = {
    deserialize(data) // this should be called within the base class' apply
  }
}

有没有办法在不在基类中声明单独的方法的情况下执行此操作？

IE中。我试图避免以下情况：

object BaseClass {
  def apply(data: String) : JsonClass = {
    try {
      convert(data)
    } catch {
      case e: Exception => ErrorJsonClass(data)
    }
  }

  def convert(data: String): JsonClass = _
}

object SubClass extends BaseClass {
  def convert(data: String) : Json = {
    deserialize(data) 
  }
}