Research Jackson serialisation replacement

we use Jackson already for the objects on the restful endpoints (accessed by UI). And for that we restrict the (de)serialized properties, e.g.:
https://github.com/aerogear/aerogear-unifiedpush-server/blob/master/model/api/src/main/java/org/jboss/aerogear/unifiedpush/api/iOSVariant.java#L40

now, in the push side (e.g. TokenLoader replacement for JMS) we need these values, hence a Jackson based approiach is limited.

A few options:

• GSON or another JSON library
• Different protocol (Avro, but that might be complicated, and a lot of schemes overhead)
• Write some "data transfer object", to be used inside of the messaging (but again, a lot of overhead)