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)

Alykoff Gali · Accepted Answer · 2018-07-30 14:55:28Z

14

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"])
])

edited Jul 30, 2018 at 14:55

answered Oct 29, 2017 at 12:13

Alykoff Gali

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1 Comment

Andrey Paslavsky Over a year ago

It was 3 years ago. Kotlin was in Milestone and sometimes new version broke existing code @Alykoff Gali, Regarding latest version, yes, you are absolutely right

Andrey Breslav · Accepted Answer · 2014-10-06 21:14:01Z

3

Use the spread operator:

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

answered Oct 6, 2014 at 21:14

Andrey Breslav

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Comments

Ivan Mushketyk · Accepted Answer · 2017-11-07 10:34:17Z

0

Was struggling with this myself today. The following snippet works with the most recent version of Kotlin:

@ApiResponses(value = *arrayOf(
        ApiResponse(code = 403, message = "Unauthorized"),
        ApiResponse(code = 404, message = "Item not found")))

or a shorter option:

@ApiResponses(
    ApiResponse(code = 403, message = "Unauthorized"),
    ApiResponse(code = 404, message = "No active snapshots"))

if an annotation with an array is defined as:

public @interface ApiResponses {
    ApiResponse[] value();
}

edited Nov 7, 2017 at 10:34

answered Nov 7, 2017 at 10:23

Ivan Mushketyk

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