我目前正在使用 Slick 1.x 在 playframework 2.1.3 中访问 MySQL。虽然 Slick 的功能通常看起来不错,但我无法理解声明语法的重复性。我的意思是看看下面的代码:
case class User
 (id: Option[Long]
 , firstName: String
 , lastName: String
 , email: String
 , password: String
 , status: String
 , createDate: Long = Platform.currentTime
 , firstLogin: Option[Long]
 , lastLogin: Option[Long]
 , passwordChanged: Option[Long]
 , failedAttempts: Int = 0
  )
object User extends Table[User]("USER") {
  def id = column[Long]("id", O.PrimaryKey, O.AutoInc)
  def firstName = column[String]("firstName", O.NotNull)
  def lastName = column[String]("lastName", O.NotNull)
  def email = column[String]("mail", O.NotNull)
  def password = column[String]("password", O.NotNull)
  def status = column[String]("status", O.NotNull)
  def createDate = column[Long]("createDate", O.NotNull)
  def firstLogin = column[Long]("firstLogin", O.Nullable)
  def lastLogin = column[Long]("lastLogin", O.Nullable)
  def passwordChanged = column[Long]("passwordChanged", O.Nullable)
  def failedAttempts = column[Int]("failedAttempts", O.NotNull)
  def * = id.? ~ firstName ~ lastName ~ email ~ password ~ status ~ createDate ~ firstLogin.? ~ lastLogin.? ~ passwordChanged.? ~ failedAttempts <>(User.apply _, User.unapply _)
  def autoInc = * returning id
}
这是不对的,为了拥有一个简单的案例类和一个访问对象,我必须将每个字段声明三次。有没有办法避免这种容易出错的重复性?
更新:当然,这个问题的解决方案应该支持读写操作。