Routes(ref(), ref())

is the equivalent of

Routes(ref<UserHandler>(), ref<MessageSource>())

(types are not required thanks to Kotlin type inference) where

ref<UserHandler>()

is a shortcut for

applicationContext.getBean(UserHandler::class.java)

. We may provide an alternative syntax for autowiring classes by constructor which is pretty common in Koltin.

applicationContext.getBean()

ref()

beans()

BeanDefinitionDsl

ref()

BeanDefinitionContext

BeanDefinitionDsl

ref()

fun beans() = beans {
    bean("controller") {
        WelcomeController(WelcomeService(ref<WelcomeRepository>()))
    }
}

WelcomeService

WelcomeService(...)