package cake trait HasLogger extends cake.services.HasLogger { type LoggerType = Logger class Logger(logFileName: String) extends cake.logger.FileLogger(logFileName) with ILogger } trait HasDatabase extends cake.services.HasDatabase { type DatabaseType = Database class Database(dsn: String, username: String, password: String) extends cake.database.DBI(dsn, username, password) with IDatabase } trait HasApplication extends cake.services.HasApplication { this: cake.HasLogger with cake.HasDatabase => type ApplicationType = Application class Application extends cake.application.Application(logger, database) with IApplication } class Container ( logFileName: String = "out.log", dsn: String = "dbi:mysql:myapp", username: String = "doy", password: String = "blah" ) extends HasApplication with HasLogger with HasDatabase { lazy val application = new Application lazy val logger = new Logger(logFileName) // val database = Database.connect("dbi:mysql:myapp", "doy", "blah") lazy val database = new Database(dsn, username, password) } object MyApp extends Application { val container1 = new Container println("running container 1") container1.application.run println("done with container 1") val container2 = new Container(logFileName = "other.log") println("running container 2") container2.application.run println("done with container 2") val container3 = new Container( dsn = "dbi:SQLite::memory:", username = "", password = "" ) println("running container 3") container3.application.run println("done with container 3") }