Missing serde for Number

[loicgreffier]

Expected Behavior

When deserializing a class with a field whose type is an interface annotated with @JsonSubTypes, Micronaut looks for a default constructor on the interface:

io.micronaut.core.convert.exceptions.ConversionErrorException: Failed to convert argument [bodyDto] for value [null] due to: Error decoding property [Validator validator] of type [class com.example.demo.BodyDto]: Unable to deserialize type [Validator validator]: No default constructor exists

You can find a non-working example with Micronaut 4 here: https://github.com/loicgreffier/issue-micronaut-serdes
And a working example with Micronaut 3 here: https://github.com/loicgreffier/micronaut-serdes-working

Actual Behaviour

The deserialization failed on the field annotated with @JsonSubTypes

Steps To Reproduce

1. Create an interface A with one or more implementations (A1, A2, A3). Define the @JsonTypeInfo and @JsonSubTypes annotations
2. Create a class B with a field typed with the interface A
3. Send an object of type B as a body of an HTTP request to a REST endpoint

Environment Information

No response

Example Application

https://github.com/loicgreffier/issue-micronaut-serdes

Version

4.1.0

[yawkat]

The main issue is your @Introspected(classes = Number.class). That breaks the introspection for the class it's on (Range) which breaks further serialization.

Removing that is not enough though. Serde does not have a deserializer for Number atm. So I will leave this issue open.

[loicgreffier]

I confirm that implementing my own beans Deserializer<Number> and Serializer<Number> seems to do the trick for now