How can i configure jOOQ code generator to generate Set<T> instead of Array<T>?-CodePudding

I am working with a database where values are stored in an ARRAY column which has the semantics of a Java Set, most importantly that ordering does not matter.

Currently, the jOOQ generator generates POJOs and Records with Array<T> type for those columns. This is problematic, because two arrays don't equal if their ordering is different.

I tried creating a custom converter, however, obviously defining the toType as Set<String>::class.java won't compile because of type erasure(?)

class ArrayToSetConverter() :
    AbstractConverter<Array<String>, Set<String>>(Array<String>::class.java, Set<String>::class.java) { ... }

Compilation error:

Only classes are allowed on the left hand side of a class literal

Is there another way of achieving my goal?

Similar (unfortunately unanswered) question: jOOQ converter from String to List<MyType> in Kotlin

CodePudding user response：

With type erasure, I don't think you can formally create a Class<Set<String>> type reference in neither Java nor kotlin. But you don't have to. Just do this:

class ArrayToSetConverter() : AbstractConverter<Array<String>, Set<String>>(
  Array<String>::class.java, 
  Set::class.java as Class<Set<String>> // Unsafe cast here
) { ... }