0
这放气和地图位映射数据库列阶对象是延续到下面的帖子：有没有办法通过光滑
How to combine multiple columns in one case class field when using lifted embedding?
我是位字段的忠实球迷，希望在我使用slick-macros的项目中使用这个逻辑。不幸的是，slick-additions没有完全更新到slick 2.0，有一个不稳定的分支，实际上甚至不会编译。我想直接测试上面的逻辑，但最终与以下错误：
按照上面的帖子：
trait Bitmasked {
type Value
def bitFor: Value => Int
def forBit: Int => Value
def values: Iterable[Value]
def longToSet: Long => Set[Value] =
bm => values.toSeq.filter(v => 0 != (bm & (1 << bitFor(v)))).toSet
def setToLong: Set[Value] => Long =
_.foldLeft(0L){ (bm, v) => bm + (1L << bitFor(v)) }
implicit lazy val enumTypeMapper: BaseTypeMapper[Value] =
MappedTypeMapper.base[Value, Int](bitFor, forBit)
implicit lazy val enumSetTypeMapper: BaseTypeMapper[Set[Value]] =
MappedTypeMapper.base[Set[Value], Long](setToLong, longToSet)
implicit lazy val getResult: GetResult[Value] =
GetResult(r => forBit(r.nextInt))
implicit lazy val getSetResult: GetResult[Set[Value]] =
GetResult(r => longToSet(r.nextLong))
}
/** Mix this class into a subclass of Enumeration to have it usable as a
* column type in a Slick Table. */
trait BitmaskedEnumeration extends Bitmasked { this: Enumeration =>
def bitFor = _.id
def forBit = apply(_)
}
object Role extends Enumeration with BitmaskedEnumeration {
type Role = Value
val Editor, Moderator, Administrator, Usermoderator, Usermoderator2, Partner, PremiumPartner, CorporatePaid = Value
}
。
[error] C:\git\slick-macros\database\src\main\scala\model\Database.scala:9: object BaseTypeMapper is not a member of package scala.slick.lifted
[error] import slick.lifted.{BaseTypeMapper, MappedTypeMapper}
[error] ^
[error] C:\git\slick-macros\database\src\main\scala\model\Database.scala:56: not found: value Role
[error] import Role._
[error] ^
[error] C:\git\slick-macros\database\src\main\scala\model\Database.scala:61: not found: type Role
[error] case class Member(login: String, rights: UserRights, roles: Role, addr: Address, company: Company, manager: Option[Member]) {
[error] ^
[error] three errors found
[error] (database/compile:compile) Compilation failed
[error] Total time: 17 s, completed Mar 18, 2014 1:18:30 PM
有没有一种方法来位图数据库列放气和映射？例如，当值是1（二进制0001）时，用户是编辑器，当值是2（二进制0010）时，主持人和当值是3（二进制0011）时都是编辑器和主持人。我想要一种方法来解决这个问题并在Scala中设置标志。
谢谢你， 沙市