RestEasy Reactive: Custom ParamConverters not used for elements of Set in query params

[kdubb]

Describe the bug

RestEasy Reactive does not use custom ParamConverters when deserializing elements of a Set for query param

For example we have a custom converter for UUIDs, with this following JAX-RS method, the converter is never called for the elements of ids:

  @GET
  public List<Teams> fetchTeams(@QueryParam(value = "ids") Set<UUID> ) {}

Expected behavior

Properly registered ParamConverters are used when deserializing query parameters that are collection types.

FYI, RestEasy Reactive Client uses them as expected when serializing requests using the same interface/method.

Actual behavior

The "default" converter is always used. Even if a custom converter is present and properly registered.

How to Reproduce?

1. Create a resource method similar to that shown above.
2. Register a custom UUID handler (e.g. one that expects no dashes)
3. Call resource method with a query parameter in the custom format.

Output of uname -a or ver

macOS 12

Output of java -version

Java 17

GraalVM version (if different from Java)

No response

Quarkus version or git rev

2.11.2.Final

Build tool (ie. output of mvnw --version or gradlew --version)

No response

Additional information

No response

[quarkus-bot]

/cc @FroMage, @geoand, @stuartwdouglas

[kdubb]

I attempted to investigate/fix this, but it proved beyond my RestEasy Reactive knowledge haha.

I can say the SetConverter gets initialized with a delegate/supplier of type RuntimeResolvedResolvedConverter.Supplier (seemed hopeful) but it's always a LoadedParameterConverter with a default converter for UUIDs.

[geoand]

Thanks for the report and looking into it.

#27529 fixes the issue.