用GSON稍微展平对象

Question

My entities in Java look like

{
    id: 123,
    name: "Some Name",
    someList: [1, 2, 3],
    data: {
        someDetail: "Whatever",
        anotherDetail: "And so on"
    }
}

ie, I moved some boring stuff into an @Embeddable Data data . It's fine for use in Java, but I'm transferring the entities (without DTOs) via GSON and in Javascript, I'd strongly prefer a more flat structure

{
    id: 123,
    name: "Some Name",
    someList: [1, 2, 3],
    someDetail: "Whatever",
    anotherDetail: "And so on"
}

The only wanted change is treating the content of data as if it was in the main object directly, other parts should stay as they're. The deserialization is needed, too.

Answer 1

You could make a simple data class that transform the neccessary data points to single level from an input class. Then you can export that flat class as json.

class objectFlat {
    int id;
    String name;
    List<Integer> someList;
    String someDetail;
    public objectFlat(ObjectInput input) {
        this.id = input.id;
        this.name = input.name;
        this.someList = input.someList;
        this.someDetail = input.getData().someDetail;
    }

}