Play Framework/Scala example source code file (JavaGlobalSettingsAdapter.scala)

This example Play Framework source code file (JavaGlobalSettingsAdapter.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Play Framework (and Scala) source code examples by using tags.

All credit for the original source code belongs to Play Framework; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Play Framework tags/keywords

a, api, application, classloader, concurrent, core, essentialaction, file, future, globalsettings, library, nonfatal, option, play, play framework, requestheader

The JavaGlobalSettingsAdapter.scala Play Framework example source code

/*
 * Copyright (C) 2009-2013 Typesafe Inc. <http://www.typesafe.com>
 */
package play.core.j

import play.api._
import play.api.mvc._
import java.io.File
import scala.concurrent.Future
import play.api.libs.iteratee._
import scala.util.control.NonFatal

/** Adapter that holds the Java `GlobalSettings` and acts as a Scala `GlobalSettings` for the framework. */
class JavaGlobalSettingsAdapter(val underlying: play.GlobalSettings) extends GlobalSettings {
  require(underlying != null, "underlying cannot be null")

  override def beforeStart(app: Application) {
    underlying.beforeStart(new play.Application(app))
  }

  override def onStart(app: Application) {
    underlying.onStart(new play.Application(app))
  }

  override def onStop(app: Application) {
    underlying.onStop(new play.Application(app))
  }

  override def onRouteRequest(request: RequestHeader): Option[Handler] = {
    val r = JavaHelpers.createJavaRequest(request)
    Option(underlying.onRouteRequest(r)).map(Some(_)).getOrElse(super.onRouteRequest(request))
  }

  override def onError(request: RequestHeader, ex: Throwable): Future[Result] = {
    JavaHelpers.invokeWithContext(request, req => Option(underlying.onError(req, ex)))
      .getOrElse(super.onError(request, ex))
  }

  override def onHandlerNotFound(request: RequestHeader): Future[Result] = {
    JavaHelpers.invokeWithContext(request, req => Option(underlying.onHandlerNotFound(req)))
      .getOrElse(super.onHandlerNotFound(request))
  }

  override def onBadRequest(request: RequestHeader, error: String): Future[Result] = {
    JavaHelpers.invokeWithContext(request, req => Option(underlying.onBadRequest(req, error)))
      .getOrElse(super.onBadRequest(request, error))
  }

  override def getControllerInstance[A](controllerClass: Class[A]): A = {
    Option(underlying.getControllerInstance(controllerClass))
      .getOrElse(super.getControllerInstance(controllerClass))
  }

  override def onLoadConfig(config: Configuration, path: File, classloader: ClassLoader, mode: Mode.Mode) = {
    import JavaModeConverter.asJavaMode
    Option(underlying.onLoadConfig(new play.Configuration(config), path, classloader, mode))
      .map(_.getWrappedConfiguration).getOrElse(super.onLoadConfig(config, path, classloader, mode))
  }

  override def doFilter(a: EssentialAction): EssentialAction = {
    try {
      Filters(super.doFilter(a), underlying.filters.map(_.newInstance: play.api.mvc.EssentialFilter): _*)
    } catch {
      case NonFatal(e) => {
        import play.api.libs.iteratee.Execution.Implicits.trampoline
        EssentialAction(req => Iteratee.flatten(onError(req, e).map(result => Done(result, Input.Empty))))
      }
    }
  }

}