Hey guys, wondering if there’s a way to use Kotlin value classes (inline classes) in JAX-RS. I had c...

# server

[asavio]

Hey guys, wondering if there’s a way to use Kotlin value classes (inline classes) in JAX-RS. I had created a data class with properties of value class types. I couldn’t get my data class with parameters which have value class types as the request body in JAX-RS. I’m wondering if there’s any work around to get this working.

[ephemient]

unlikely. anything that uses Java reflection is only going to get the mangled forms that Kotlin produces for passing value classes

[ephemient]

if you manually create a constructor with the underlying types and @JvmName all the accessors, perhaps you can get it to look close enough for Java

[asavio]

Does that have performance implications?

[ephemient]

no, just binary compatibility implications

[ephemient]

(if you're doing work in the value classes' constructors, then there is some cost to "constructing" them, but that's not common)

[ephemient]

https://youtrack.jetbrains.com/issue/KT-47686/Support-generating-a-public-constructor-with-value-class-parameter-to-call-it-from-Java

[asavio]

Nice! Thank you.