Générics constructor parameters don't apply converters

[jolangloys]

Given a class which has a type parameter, and is not used as super class.

public final class Wrapper<V> {
   private final V value;

   public Wrapper(V value) {
      this.value = value;
   }

   // Getters, etc...
}

When used in a constructor/setter for deserialization, with a type that requires the use of a converter, the converter is not called and the value is not converter, resulting in a ClassCastException later in the code.

For example, used in correlation with an Enum (which use a converter to be mapped to a String):

@Document
public class Foo {
   private final Wrapper<FooEnum> myEnum;

   @PersistenceConstructor
   public Foo(Wrapper<FooEnum> myEnum) {
       this.myEnum = myEnum;
   }

   // Getters, etc ...

  public enum FooEnum { FOO, BAR }
}

I have reproduced this behaviour with other classes which use a converter.

This issue looks like the #2226 one, but here we're in the case were the wrapper class is not extended with a given type.

[christophstrobl]

thanks for reporting - we'll look into this!

[christophstrobl]

Which version are you using?
Can you provide a Minimal, Reproducible Example to help us spot the issue? I might have missed something, but was not able to reproduce the issue with this test.

[jolangloys]

I'am using version 2.3.2.
I'll try to make an example in the latest version.

[jolangloys]

I have made a simple example project: https://github.com/jolangloys/example-3567

Making the example made me realize that the problem only occur when the generic class extends its generic from a super class. In my example, Wrapper extends BaseWrapper.

[christophstrobl]

Thanks for the feedback - good catch!

[christophstrobl]

Upgraded the sample to boot-3 snapshots and verified it works as expected with the changes in data-commons linked above.