kotlin: some problems with arrays in annotations

Question

I have a some problem in annotations:

Entity Table(uniqueConstraints = array(UniqueConstraint(columnNames = array("key", "userid")))) 
public class ...

In this case I get the following error:

Type inference failed. Expected type mismatch: found: kotlin.Array required: kotlin.String

There is no problems with uniqueConstraints = array(...) but Idea shows me error in columnNames = array(...)

I using hibernate-jpa-2.1-api-1.0.0.Final.jar

---

Workaround: Instead uniqueConstraints I using composite key (@javax.persistence.IdClass)

Answer 1

This works for me:

@Table(uniqueConstraints = arrayOf(
        UniqueConstraint(columnNames = arrayOf("key", "key"))
))

Also for new version kotlin you may do that:

@Table(uniqueConstraints = [
    UniqueConstraint(columnNames = ["key", "key"])
])

Answer 2

Use the spread operator:

UniqueConstraint(columnNames = *array("key", "userid"))