Transactions Slick 3在事务中插入复合列表

我需要在保存ID关系的事务中插入下一个案例类：

case class A (id: Long, bList: List[B])
case class B (id: Long, aId: cList: List[C])
case class C (id: Long, bId: Long)

我知道用一个列表保存实体很容易：

def saveAWithBList(aTableObject: A): Future[Long] = {

  val saveQuery = (for {
     savedAId <- (aTable returning table.map(_.id)) += aTableObject
     savedBRows <- bTable ++= aTableObject.bList.map(_.copy(aId = savedAId))
  } yield savedAId).transactionally

  database.run(saveQuery)
}

def saveAWithBList（aTableObject:A）：未来[Long]={
val saveQuery=（用于{
savedAId下一个解决方案工作正常：

  def saveAWithBListWithCList(aTableObject: A): Future[Long] = {

    val saveQuery = (for {
      savedAId <- (aTable returning aTable.map(_.id)) += aTableObject
      _ <- DBIO.sequence(aTableObject.bList.map { bObject =>
        ((bTable returning bTable.map(_.id)) += bObject.copy(aId = savedAId)).flatMap { bIdAction =>
          cTable ++= bObject.cList.map(_.copy(bId = bIdAction.result))
        }
      })
    } yield savedAId).transactionally

    database.run(saveQuery)
  }

def saveAWithBListWithCList（aTableObject:A）：未来[Long]={
val saveQuery=（用于{
萨维代德
cTable++=bObject.cList.map（u.copy（bId=bIdAction.result））
}
})
}交易性收益率
database.run（saveQuery）
}

  def saveAWithBListWithCList(aTableObject: A): Future[Long] = {

    val saveQuery = (for {
      savedAId <- (aTable returning aTable.map(_.id)) += aTableObject
      _ <- DBIO.sequence(aTableObject.bList.map { bObject =>
        ((bTable returning bTable.map(_.id)) += bObject.copy(aId = savedAId)).flatMap { bIdAction =>
          cTable ++= bObject.cList.map(_.copy(bId = bIdAction.result))
        }
      })
    } yield savedAId).transactionally

    database.run(saveQuery)
  }