Using JAX-RS (GlassFish 4) and Jackson as serializer, I encountered a problem during deserialization of POJO properties of type `Double` (same with `Integer`).

Lets say I have simple POJO (excluding bunch of other fieds, getters and setters):

```
public class MapConstraints {    

    private Double zoomLatitude;

    private Double zoomLongitude;   
}

```

When a user send request to API in format `{ "zoomLatitude": "14.45", "zoomLongitude": ""}`, value of `zoomLatitude` is set to `14.45`, but value of `zoomLongitude` is set to `0`. 

I expect value of `zoomLongitude` to be `null` if no value is presented. I tried configure `ObjectMapper` with `JsonInclude.Include.NON_EMPTY` but without success.

Same results with genson.