Hey, I am discussing with Spring Data team about `...

# spring

[sdeleuze]

Hey, I am discussing with Spring Data team about Persistable. I would like to avoid having to use Persistable with data classes which does not seems a good fit, but there is something I am not sure about Kotlin / Java interop. Let's take following code (Persistable is a Java interface):

public interface Persistable<ID> {
	@Nullable
	ID getId();
	boolean isNew();
}

data class User(
		val id: String?,
		val firstname: String,
		val lastname: String) : Persistable<String?> {

	override fun isNew(): Boolean = id.isNullOrBlank()
}