Is there any way to combine annotation classes, fo...

# getting-started

[Klitos Kyriacou]

Is there any way to combine annotation classes, for example like this:

import kotlin.reflect.full.hasAnnotation

annotation class Annotation1
annotation class Annotation2

@Annotation1
@Annotation2
annotation class CombinedAnnotation

@CombinedAnnotation class X

fun main() {
    println(X::class.hasAnnotation<Annotation1>())
}

That above prints "false". My inspiration is from Spring, which annotates the @Service annotation with @Component and the doc says that the former is a specialization of the latter (so every class annotated with @Service is treated as if it was also a @Component).

[ephemient]

that requires walking through the annotations to see what meta-annotations they're annotated with etc.

[ephemient]

that's what Spring does, https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/core/annotation/AnnotationUtils.html