crossposting, <https://kotlinlang.slack.com/archiv...

# spring

[thanksforallthefish]

crossposting, https://kotlinlang.slack.com/archives/C0B8MA7FA/p1551432870022200

the conclusion seems to be that while the interface declares (if we consider javadocs a declaration) the value parameter as nullable (https://github.com/spring-projects/spring-hateoas/blob/master/src/main/java/org/springframework/hateoas/server/mvc/UriComponentsContributor.java#L46) spring data commons declares the implementation (HateoasSortHandlerMethodArgumentResolver) as not nullable, therefore kotlin prevents to write something like override fun enhance(builder: UriComponentsBuilder, parameter: MethodParameter, value: Any?).

is it worth to create an issue?

[Czar]

Yes, if the implementation breaks behaviour documented in the interface, you definitely should file an issue.

[hho]

I created https://jira.spring.io/browse/DATACMNS-1486