Question

我正在尝试使用升降机2.5和scala 2.10

来实施升降机状态机

import net.liftweb.common.{Loggable,Full,Empty}
import net.liftweb.machine.{ProtoStateMachine,MetaProtoStateMachine}
import net.liftweb.mapper.MappedLongForeignKey
import net.liftweb.util.Helpers._

object AuctionStates extends Enumeration {
  val Initial, Active, Expired = Value
}

object AuctionMachine extends AuctionMachine with MetaProtoStateMachine[AuctionMachine, AuctionStates.type ]{
...
}

class AuctionMachine extends ProtoStateMachine[AuctionMachine, AuctionStates.type]{
  def getSingleton = AuctionMachine
...
}

但是我收到了这个错误错误：

net.liftweb.machine.MetaProtoStateMachine does not take type parameters

[INFO] object AuctionMachine extends AuctionMachine with MetaProtoStateMachine[AuctionMachine, AuctionStates.type]

为什么？

Answer 1

2012年，代码从Lift适当移出了Lift模块。您可以在此处找到有关如何正确引用它的更多信息：https://github.com/liftmodules/machine

提升MetaProtoStateMachine不接受类型参数

1 个答案: