CBOR: finite-length maps support on ObjectMapper

[martinpaljak]

From
FasterXML/jackson#125 (reply in thread)

Would like to specify a feature (or have default behaviour) where serialization with ObjectMapper of simple maps/objects would result in compact/defined length maps with CBOR

[martinpaljak]

dang this should have gone to -databind ...

[cowtowncoder]

Moved. But also needs to be split across Map case and "POJO" case since these are different implementations.
Splitting can be done if and when someone works on the issue.

Actually come to think of it, there's even 3rd case: that of "Untyped" serialization in which Maps are serialized as-is, without filtering -- this is the easiest case.

Oh well and also 4th one... ObjectNode case of JsonNode. :)
(this is actually the simplest case and easiest to support ASAP)

[cowtowncoder]

Support for ObjectNode (non-filtering case) added in 2.20 via #5103.

For unfiltered Maps would be doable too but requires some slightly riskier changes (since MapSerializer.serializeWithoutTypeInfo() is public method).