How do I remove a wrapper from a JSON Object?

Question

I have a JSON object with a wrapper which contains information about the service it came from. Before parsing the object I really care about I would like to take off the wrapper and then just parse the object.

How do I turn this JSON object:

{"object":{"id_object": 1, "description": "Black" }, "origin":"colors"}

Into this:

{"id_object": 1, "description": "Black"}

I am using GSON as JSON parser, but if any other will give me the functionallity, I can change the library.

Thanks in advance.

Answer 1

Since the whole thing is a blob of json, it doesn't make sense to 'unwrap it.' Just parse the whole thing, and and grab the value of the 'object' key, and go along from there.

Answer 2

Super hacky solution:

private class Holder{
    private IdHolder object;
    private String origin;

    public IdHolder getObject() {
        return object;
    }
    public String getOrigin() {
        return origin;
    }

    private class IdHolder{
        private int id_object;
        private String description;
    }
}


    Holder holder = gson.fromJson("{\"object\":{\"id_object\": 1, \"description\": \"Black\" }, \"origin\":\"colors\"}", Holder.class);
    System.out.println(gson.toJson(holder.getObject()));

Would recommend @bmargulies answer though, that is the right thing to do.