serialize plain object to multi-level json (@JsonWrap[ped])

[skyding228]

public class Member{
    private String id;
    @JsonProperty("User.name")
    private String name;
    @JsonProperty("User.age")
    private Integer age;
}

I expect the serialization is

{
  "id":null,
   "User":{
        "name":null,
        "age": null
   }
}

[cowtowncoder]

I don't think I agree with magical use of dots in names (since they are legal name characters in general). But there is a suggestion for something like @JsonWrapped, and for such use it (or maybe more likely, use of String arrays in annotation), things could work.
Challenge is mostly wrt implementation as no tree structure is currently held in memory: serialization can be easy (... except, when multiple properties try to use same wrapping...), but deserialization becomes complex when wrappers need to be removed.

[simon04]

Related: FasterXML/jackson-databind#512 and FasterXML/jackson-annotations#42