Java-annotation parameters in Kotlin
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23-06-2021 - |
Question
I'm experimenting with Kotlin and I have a following Java-annotation
@Target( { TYPE })
@Retention(RUNTIME)
public @interface View {
String[] url() default "";
Class<? extends Component> parent() default Component.class;
}
and in Java-code it is used in following way
@View(url="/", parent=RootView.class)
public class FrontView extends Component {
}
How is that expressed in Kotlin? I have tried
[View(url=Array<String>("/"), parent=Class<RootView>)]
class FrontView : Component() {
}
but it does not compile. I only get type mismatch errors.
Type mismatch.
Required: jet.Array<jet.String?>?
Found: jet.Array<T>
and
Type mismatch
Required: java.lang.Class<out net.contextfw.web.application.component.Component?>?
Found: java.lang.Class<T>
Solution
I found the solution. The syntax seems to be like this:
[View(url=array("/"), parent=javaClass<RootView>())]
class FrontView() : Component() {
}
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