Polymorphic deserialization involving Guava Optional<T> is broken

[bbeck]

Between 2.2.3 and 2.3.2 the technique of deserializing an optional polymorphic type using @JsonTypeInfo and @JsonSubTypes no longer seems to work. Without the Guava Optional<T> everything works fine.

Self-contained example demonstrating the problem can be found here: https://gist.github.com/bbeck/934d787cc36c61c3e8a0

[cowtowncoder]

Thank you, I will try to reproduce, figure out what is going on.

[cowtowncoder]

Looking at change notes, #37 would seem related, but it was in 2.3.3.

[bbeck]

I just tested with 2.3.3 as well and my example still breaks. 😦

[cowtowncoder]

Sure, I was more trying to understand what caused breakage, not that it would yet be fixed.
Although of course would have been nice if it had been fixed, but... :)

[cowtowncoder]

Ok, although fixing was rather more involved than I expected, this is now fixed both for master (2.4) and 2.3 branch (for eventual 2.3.4).

[bbeck]

Thank you!