Is it possible to define annotation that is composed or inhe kotlinlang #announcements

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Title

j

Jukka Siivonen

04/10/2019, 8:27 AM

Is it possible to define annotation that is composed or inherited from other annotations?

For example I know I can have

@WithUserDetails(value = DEFAULT_TEST_USERNAME)
annotation class SpringContextTest

but I cannot use @SpringContextTest like this:

d

diesieben07

04/10/2019, 8:27 AM

Those so-called meta annotations have to be explicitly supported by whatever framework / library is consuming those annotations

j

Jukka Siivonen

04/10/2019, 8:27 AM

@SpringContextTest(username = "foo")

d

diesieben07

04/10/2019, 8:28 AM

In the case of spring you can use

@AliasFor(annotation = SpringContextTest)

on your

username

property

Probably need

@AliasFor(annotation = SpringContextTest::class, attribute = "value")

acutally. Not quite sure how

@SpringContextTest

looks

j

Jukka Siivonen

04/10/2019, 8:31 AM

to be precise my custom @SpringContextTest just wraps two Spring annotations

@SpringBootTest
@WithUserDetails(value = DEFAULT_TEST_USERNAME)
annotation class SpringContextTest

and I would like to have possibility to use my annotation in tests as @SpringContextTest(username = "foo") or just @SpringContextTest (default user)

I will look in to AliasFor, I did not know about that. Thanks

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