Scala ClassTag类代码示例

//设置package包名称以及导入依赖的类
package com.pacbio.simulator.steps

import com.pacbio.simulator.Scenario
import com.pacbio.simulator.StepResult._

import scala.concurrent.Future
import scala.reflect.{ClassTag, classTag}

trait ConditionalSteps {
  this: Scenario with VarSteps =>

  implicit class ConditionalStep(s: Step) {
    def IF (cond: Var[Boolean]): Step = IfStep(cond, s)
    def SHOULD_FAIL: Step = ExpectFailStep(s)
    def SHOULD_RAISE[T <: Throwable: ClassTag](clazz: Class[T]): Step = ExpectErrorStep[T](s, clazz)
  }

  case class IfStep[T](v: Var[Boolean], step: Step) extends Step {
    override val name = s"Conditional-${step.name}"
    override def run: Future[Result] = if (v.get) step.run else Future { SUPPRESSED }
  }

  case class ExpectFailStep(step: Step) extends Step {
    override val name = s"ExpectFail-${step.name}"
    override def run: Future[Result] = step.run.map {
      case FAILED(_, _) => SUCCEEDED
      case r => FAILED(s"Expected FAILED result but was $r")
    }
  }

  case class ExpectErrorStep[T <: Throwable: ClassTag](step: Step, clazz: Class[T]) extends Step {
    override val name = s"ExpectError-${step.name}"
    override def run: Future[Result] = step.run.map { r =>
      FAILED(s"Expected EXCEPTION result but was $r")
    }.recoverWith {
      case ex if classTag[T].runtimeClass.isInstance(ex) => Future { SUCCEEDED }
    }
  }

  def fail(failMsg: String): Step = FailStep(failMsg)

  case class FailStep[T](failMsg: String) extends Step {
    override val name = "Fail"
    override def run: Future[Result] = Future { FAILED(failMsg) }
  }

  def exception(ex: Exception): Step = ExceptionStep(ex)

  case class ExceptionStep(ex: Exception) extends Step {
    override val name = "Exception"
    override def run: Future[Result] = Future { throw ex }
  }
} 

//设置package包名称以及导入依赖的类
package base

import org.slf4j.{ Logger ? SLF4JLogger }

trait LazyLoggerSupport {
  val logger = LazyLogger(this.getClass)
}

class LazyLogger(val underlying: SLF4JLogger) {

  @inline final def isTraceEnabled = underlying.isTraceEnabled
  @inline final def trace(msg: ? String): Unit = if (isTraceEnabled) underlying.trace(msg.toString)
  @inline final def trace(msg: ? String, t: ? Throwable): Unit = if (isTraceEnabled) underlying.trace(msg, t)

  @inline final def isDebugEnabled = underlying.isDebugEnabled
  @inline final def debug(msg: ? String): Unit = if (isDebugEnabled) underlying.debug(msg.toString)
  @inline final def debug(msg: ? String, t: ? Throwable): Unit = if (isDebugEnabled) underlying.debug(msg, t)

  @inline final def isErrorEnabled = underlying.isErrorEnabled
  @inline final def error(msg: ? String): Unit = if (isErrorEnabled) underlying.error(msg.toString)
  @inline final def error(msg: ? String, t: ? Throwable): Unit = if (isErrorEnabled) underlying.error(msg, t)

  @inline final def isInfoEnabled = underlying.isInfoEnabled
  @inline final def info(msg: ? String): Unit = if (isInfoEnabled) underlying.info(msg.toString)
  @inline final def info(msg: ? String, t: ? Throwable): Unit = if (isInfoEnabled) underlying.info(msg, t)

  @inline final def isWarnEnabled = underlying.isWarnEnabled
  @inline final def warn(msg: ? String): Unit = if (isWarnEnabled) underlying.warn(msg.toString)
  @inline final def warn(msg: ? String, t: ? Throwable): Unit = if (isWarnEnabled) underlying.warn(msg, t)
}

object LazyLogger {
  import scala.reflect.{ classTag, ClassTag }

  def apply(name: String): LazyLogger = new LazyLogger(org.slf4j.LoggerFactory.getLogger(name))
  def apply(cls: Class[_]): LazyLogger = apply(cls.getName)
  def apply[C: ClassTag](): LazyLogger = apply(classTag[C].runtimeClass.getName)
} 

//设置package包名称以及导入依赖的类
package controllers.api.auth

import com.github.sample.utils.Loggable
import jp.t2v.lab.play2.auth._
import play.api.mvc.Results.Forbidden
import play.api.mvc.{RequestHeader, Result, Results}

import scala.collection.mutable
import scala.concurrent.{ExecutionContext, Future}
import scala.reflect.{ClassTag, classTag}

trait AuthConfigImpl extends AuthConfig with Loggable{

  override type Id = String

  override type User = MyUser

  
  override val idTag: ClassTag[Id] = classTag[Id]

  override def sessionTimeoutInSeconds: Int = 3600 // 1??

  override def resolveUser(id: Id)(implicit context: ExecutionContext): Future[Option[User]] = {
    Future.successful(AuthService.userOfId(id))
  }

  override def loginSucceeded(request: RequestHeader)(implicit context: ExecutionContext): Future[Result] = {
    Future.successful(Results.Redirect("/"))
  }

  override def logoutSucceeded(request: RequestHeader)(implicit context: ExecutionContext): Future[Result] = {
    Future.successful(Results.Redirect("/login?logout=true"))
  }

  override def authenticationFailed(request: RequestHeader)(implicit context: ExecutionContext): Future[Result] = {
    if(request.acceptedTypes.map(_.toString()).contains("text/html")){
      Future.successful(Results.Redirect("/login?failed=true"))
    }else{
      Future.successful(Results.Unauthorized("Unauthorized"))
    }
  }

  override def authorizationFailed(request: RequestHeader, user: User, authority: Option[Authority])(implicit context: ExecutionContext): Future[Result] = {
    Future.successful(Results.Forbidden("No permission"))
  }

  override def authorize(user: User, authority: Authority)(implicit context: ExecutionContext): Future[Boolean] = Future.successful {
    (user.role, authority) match {
      case (Administrator, _)       => true // Admin?????Action????????
      case (NormalUser, NormalUser) => true // ????NormalUser??Action?NormalUser?????????Action?Admin????????????
      case _                        => false
    }
  }

  override lazy val idContainer: AsyncIdContainer[Id] = AsyncIdContainer(new SessionHandler[Id](CacheImpl.tokenMap, CacheImpl.tokenMap2))
}

object CacheImpl{
  val tokenMap: mutable.Map[String, AuthenticityToken] = mutable.Map()
  val tokenMap2: mutable.Map[AuthenticityToken, String] = mutable.Map()
} 

//设置package包名称以及导入依赖的类
package com.github.aseigneurin.kafka.serialization.scala

import com.fasterxml.jackson.databind.ObjectMapper
import com.fasterxml.jackson.module.scala.DefaultScalaModule
import com.typesafe.scalalogging.LazyLogging

import scala.reflect.{ClassTag, classTag}

class JsonSerde[T >: Null : ClassTag] extends BaseSerde[T] with LazyLogging {

  val mapper = new ObjectMapper
  mapper.registerModule(DefaultScalaModule)

  override def deserialize(topic: String, data: Array[Byte]): T = data match {
    case null => null
    case _ =>
      try {
        mapper.readValue(data, classTag[T].runtimeClass.asInstanceOf[Class[T]])
      } catch {
        case e: Exception =>
          val jsonStr = new String(data, "UTF-8")
          logger.warn(s"Failed parsing ${jsonStr}", e)
          null
      }
  }

  override def serialize(topic: String, obj: T): Array[Byte] = {
    mapper.writeValueAsBytes(obj)
  }

} 

//设置package包名称以及导入依赖的类
package config

import controllers.routes
import jp.t2v.lab.play2.auth._
import model.user.access.Role
import model.user.access.Role.{Administrator, BlockedUser, User}
import model.user.dao.UserDAO
import play.api.mvc.Results._
import play.api.mvc._

import scala.concurrent.{ExecutionContext, Future}
import scala.reflect.{ClassTag, classTag}

trait AuthConfiguration extends AuthConfig {

  type Id = Long
  type User = model.user.User
  type Authority = Role

  val userDAO: UserDAO

  val idTag: ClassTag[Id] = classTag[Id]
  val sessionTimeoutInSeconds: Int = 3600
  def resolveUser(id: Id)(implicit ctx: ExecutionContext): Future[Option[User]] = userDAO.get(id)

  def loginSucceeded(request: RequestHeader)(implicit ctx: ExecutionContext): Future[Result] = {
    val uri = request.session.get("access_uri").getOrElse(routes.Tasks.getTaskPage().url.toString)
    Future.successful(Redirect(uri).withSession(request.session - "access_uri"))
  }

  def logoutSucceeded(request: RequestHeader)(implicit ctx: ExecutionContext): Future[Result] =
    Future.successful(Redirect(routes.Tasks.getTaskPage()))

  def authenticationFailed(request: RequestHeader)(implicit ctx: ExecutionContext): Future[Result] =
    Future.successful(Redirect(controllers.auth.routes.AuthController.login()).withSession("access_uri" -> request.uri))

  override def authorizationFailed(request: RequestHeader, user: User, authority: Option[Authority])(implicit context: ExecutionContext): Future[Result] = {
    Future.successful(Forbidden("no permission"))
  }

  def authorize(user: User, authority: Authority)(implicit ctx: ExecutionContext): Future[Boolean] = Future.successful {
    (user.role, authority) match {
      case ( Administrator, _ ) => true
      case ( User, User ) => true
      case ( BlockedUser, BlockedUser ) => true
      case _              => false
    }
  }

  override lazy val tokenAccessor = new CookieTokenAccessor(
    cookieSecureOption = play.api.Play.isProd(play.api.Play.current),
    cookieMaxAge       = Some(sessionTimeoutInSeconds)
  )

} 

//设置package包名称以及导入依赖的类
package scalera.ddd.utils

import scala.reflect.classTag

import org.scalatest.{FlatSpec, Matchers}

class TypeUtilsTest extends FlatSpec with Matchers {

  behavior of "TypeUtils"

  import TypeUtils._

  class Kid
  class Daddy extends Kid
  class Grandpa extends Daddy

  it should "determine if a type inherits from some other" in {
    classTag[Kid].isA[Kid] should equal(true)
    classTag[Kid].isA[Daddy] should equal(false)
    classTag[Daddy].isA[Grandpa] should equal(false)
    classTag[Grandpa].isA[Kid] should equal(true)
  }

  it should "determine if a type inherits from some other (using class format)" in {
    classOf[Kid].isA[Kid] should equal(true)
    classOf[Kid].isA[Daddy] should equal(false)
    classOf[Daddy].isA[Grandpa] should equal(false)
    classOf[Grandpa].isA[Kid] should equal(true)
  }

} 

//设置package包名称以及导入依赖的类
package controllers.basic

import play.api.mvc.RequestHeader
import play.api.mvc.Results._

import scala.concurrent.{Future, ExecutionContext}
import jp.t2v.lab.play2.auth.AuthConfig
import model.{Role, Account}
import model.Role._
import scala.reflect.{ClassTag, classTag}

trait AuthConfigImpl extends AuthConfig {

  type Id = Account
  type User = Account
  type Authority = Role

  val idTag: ClassTag[Id] = classTag[Id]
  val sessionTimeoutInSeconds = 3600

  def resolveUser(id: Id)(implicit ctx: ExecutionContext) = Future.successful(Some(id))
  def authorize(user: User, authority: Authority)(implicit ctx: ExecutionContext) = Future.successful((user.role, authority) match {
    case (Administrator, _) => true
    case (NormalUser, NormalUser) => true
    case _ => false
  })

  def loginSucceeded(request: RequestHeader)(implicit ctx: ExecutionContext) = throw new AssertionError("don't use application Login")
  def logoutSucceeded(request: RequestHeader)(implicit ctx: ExecutionContext) = throw new AssertionError("don't use application Logout")
  def authenticationFailed(request: RequestHeader)(implicit ctx: ExecutionContext) = Future.successful {
    Unauthorized.withHeaders("WWW-Authenticate" -> """Basic realm="SECRET AREA"""")
  }
  def authorizationFailed(request: RequestHeader, user: User, authority: Option[Authority])(implicit ctx: ExecutionContext) = Future.successful(Forbidden("no permission"))

  override lazy val idContainer = new BasicAuthIdContainer

  override lazy val tokenAccessor = new BasicAuthTokenAccessor

} 

//设置package包名称以及导入依赖的类
package controllers.api.auth

import com.github.uryyyyyyy.utils.Loggable
import jp.t2v.lab.play2.auth._
import play.api.mvc.Results.Forbidden
import play.api.mvc.{RequestHeader, Result, Results}

import scala.collection.mutable
import scala.concurrent.{ExecutionContext, Future}
import scala.reflect.{ClassTag, classTag}

trait AuthConfigImpl extends AuthConfig with Loggable{

  override type Id = String

  override type User = MyUser

  
  override val idTag: ClassTag[Id] = classTag[Id]

  override def sessionTimeoutInSeconds: Int = 3600 // 1??

  override def resolveUser(id: Id)(implicit context: ExecutionContext): Future[Option[User]] = {
    Future.successful(AuthService.userOfId(id))
  }

  override def loginSucceeded(request: RequestHeader)(implicit context: ExecutionContext): Future[Result] = {
    Future.successful(Results.Redirect("/"))
  }

  override def logoutSucceeded(request: RequestHeader)(implicit context: ExecutionContext): Future[Result] = {
    Future.successful(Results.Redirect("/login?logout=true"))
  }

  override def authenticationFailed(request: RequestHeader)(implicit context: ExecutionContext): Future[Result] = {
    if(request.acceptedTypes.map(_.toString()).contains("text/html")){
      Future.successful(Results.Redirect("/login?failed=true"))
    }else{
      Future.successful(Results.Unauthorized("Unauthorized"))
    }
  }

  override def authorizationFailed(request: RequestHeader, user: User, authority: Option[Authority])(implicit context: ExecutionContext): Future[Result] = {
    Future.successful(Results.Forbidden("No permission"))
  }

  override def authorize(user: User, authority: Authority)(implicit context: ExecutionContext): Future[Boolean] = Future.successful {
    (user.role, authority) match {
      case (Administrator, _)       => true // Admin?????Action????????
      case (NormalUser, NormalUser) => true // ????NormalUser??Action?NormalUser?????????Action?Admin????????????
      case _                        => false
    }
  }

  override lazy val idContainer: AsyncIdContainer[Id] = AsyncIdContainer(new SessionHandler[Id](CacheImpl.tokenMap, CacheImpl.tokenMap2))
}

object CacheImpl{
  val tokenMap: mutable.Map[String, AuthenticityToken] = mutable.Map()
  val tokenMap2: mutable.Map[AuthenticityToken, String] = mutable.Map()
} 

//设置package包名称以及导入依赖的类
package com.avsystem.scex
package util

import org.slf4j.{Logger, LoggerFactory}

import scala.reflect.{ClassTag, classTag}


trait LoggingUtils {

  protected case class LazyLogger(underlying: Logger) {
    def trace(msg: => String, cause: Throwable = null): Unit = {
      if (underlying.isTraceEnabled) {
        underlying.trace(msg, cause)
      }
    }

    def debug(msg: => String, cause: Throwable = null): Unit = {
      if (underlying.isDebugEnabled) {
        underlying.debug(msg, cause)
      }
    }

    def info(msg: => String, cause: Throwable = null): Unit = {
      if (underlying.isInfoEnabled) {
        underlying.info(msg, cause)
      }
    }

    def warn(msg: => String, cause: Throwable = null): Unit = {
      if (underlying.isWarnEnabled) {
        underlying.warn(msg, cause)
      }
    }

    def error(msg: => String, cause: Throwable = null): Unit = {
      if (underlying.isErrorEnabled) {
        underlying.error(msg, cause)
      }
    }
  }

  protected def createLogger[T: ClassTag] =
    LazyLogger(LoggerFactory.getLogger(classTag[T].runtimeClass))
} 

//设置package包名称以及导入依赖的类
package shark.api

import scala.reflect.classTag

object ClassTags {
  // List of primitive ClassTags.
  val jBoolean = classTag[java.lang.Boolean]
  val jByte = classTag[java.lang.Byte]
  val jShort = classTag[java.lang.Short]
  val jInt = classTag[java.lang.Integer]
  val jLong = classTag[java.lang.Long]
  val jFloat = classTag[java.lang.Float]
  val jDouble = classTag[java.lang.Double]
} 

//设置package包名称以及导入依赖的类
package io.corbel.functions.registry.memory

import grizzled.slf4j.Logging
import io.corbel.functions.model.{Activator, CorbelFunction}
import io.corbel.functions.registry.{Registry, RegistryFindCriteria}

import scala.reflect.{ClassTag, classTag}



class InMemoryRegistry extends Registry with Logging {

  var functions = Vector.empty[CorbelFunction]

  override def find[T <: CorbelFunction : ClassTag](criteria: RegistryFindCriteria[_ >: T]): Seq[T] = {
    val `type` = classTag[T].runtimeClass
    debug(s"Searching registry for ${`type`} with criteria: $criteria. Registry size = ${functions.size}")
    functions.flatMap({
      case e: T => Some(e)
      case _ => None
    })
  }

  override def register(f: CorbelFunction, activators: Activator*): Unit = {
    debug(s"Registering function: $f")
    functions +:= f
  }
} 

//设置package包名称以及导入依赖的类
package controllers.security

import jp.t2v.lab.play2.auth.AuthConfig
import models.Role.{Administrator, NormalUser}
import models.{Account, Role}
import play.api.mvc.RequestHeader
import play.api.mvc.Results._

import scala.concurrent.{ExecutionContext, Future}
import scala.reflect.{ClassTag, classTag}

trait AuthConfigImpl extends AuthConfig {

  type Id = Account
  type User = Account
  type Authority = Role

  val idTag: ClassTag[Id] = classTag[Id]
  val sessionTimeoutInSeconds = 3600

  def resolveUser(id: Id)(implicit ctx: ExecutionContext) = Future.successful(Some(id))
  def authorize(user: User, authority: Authority)(implicit ctx: ExecutionContext) = Future.successful((Role.valueOf(user.role), authority) match {
    case (Administrator, _) => true
    case (NormalUser, NormalUser) => true
    case _ => false
  })

  def loginSucceeded(request: RequestHeader)(implicit ctx: ExecutionContext) = throw new AssertionError("don't use application Login")
  def logoutSucceeded(request: RequestHeader)(implicit ctx: ExecutionContext) = throw new AssertionError("don't use application Logout")
  def authenticationFailed(request: RequestHeader)(implicit ctx: ExecutionContext) = Future.successful {
    Unauthorized.withHeaders("WWW-Authenticate" -> """Basic realm="SECRET AREA"""")
  }
  def authorizationFailed(request: RequestHeader, user: User, authority: Option[Authority])(implicit ctx: ExecutionContext) = Future.successful(Forbidden("no permission"))

  override lazy val idContainer = new BasicAuthIdContainer

  override lazy val tokenAccessor = new BasicAuthTokenAccessor

} 

//设置package包名称以及导入依赖的类
package utils

import scala.reflect.runtime.universe.{ Type, typeTag, _ }
import scala.reflect.{ ClassTag, ManifestFactory, classTag }


object Utils {

  def classTag2Manifest[T: ClassTag]: Manifest[T] = {
    val clazz = classTag[T].runtimeClass
    ManifestFactory.classType(clazz).asInstanceOf[Manifest[T]]
  }

  def typeTag2Manifest[T: TypeTag]: Manifest[T] = {
    val t = typeTag[T]
    val mirror = t.mirror
    def toManifestRec(t: Type): Manifest[_] = {
      val clazz = ClassTag[T](mirror.runtimeClass(t)).runtimeClass
      if (t.typeArgs.length == 1) {
        val arg = toManifestRec(t.typeArgs.head)
        ManifestFactory.classType(clazz, arg)
      } else if (t.typeArgs.length > 1) {
        val args = t.typeArgs.map(x => toManifestRec(x))
        ManifestFactory.classType(clazz, args.head, args.tail: _*)
      } else {
        ManifestFactory.classType(clazz)
      }
    }
    toManifestRec(t.tpe).asInstanceOf[Manifest[T]]
  }

  implicit class SafeGetOrElse[T](val o: Option[T]) {
    def safeGetOrElse(or: T): T = o match {
      case Some(v) => v
      case None => or
    }
  }

}