jackson serialization of nested objects

Question

I have problem with jackson serialization of object by its interface.

I have class

class Point implements PointView {

    private String id;

    private String name;

    public Point() {

    }

    public Point(String id, String name) {
        this.id = id;
        this.name = name;
    }

    @Override
    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

}

which implements

interface PointView {
    String getId();
}

and have class

class Map implements MapView {

    private String id;

    private String name;

    private Point point;

    public Map() {

    }

    public Map(String id, String name, Point point) {
        this.id = id;
        this.name = name;
        this.point = point;
    }

    @Override
    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    @JsonSerialize(as = PointView.class)
    public Point getPoint() {
        return point;
    }

}

which implements

interface MapView {
    String getId();
    Point getPoint();
}

And have class

class Container {

    private Map map;

    public Container() {

    }

    public Container(Map map) {
        this.map = map;
    }

    @JsonSerialize(as = MapView.class)
    public Map getMap() {
        return map;
    }
}

I want serialize Container with Jackson and get result

{"map":{"id":"mapId","point":{"id":"pointId"}}}

But in fact I get result

{"map":{"id":"mapId","point":{"id":"pointId","name":"pointName"}}}

that have property "name" in nested object "point" although I specified serializition type of Point in Map (@JsonSerialize(as = PointView.class)). Interface PointView dont have method getName, but in result exists field "name" of Point.

If I remove annotation (@JsonSerialize(as = MapView.class)) from method getMap in class Container I get result

{"map":{"id":"mapId","name":"mapName","point":{"id":"pointId"}}}

Now point dont have property "name", but map have.

How can I get result

{"map":{"id":"mapId","point":{"id":"pointId"}}}

?

Solution

To get the desired result also the same method in interface must be annotated by @JsonSerialize

interface MapView {
    String getId();
    @JsonSerialize(as = PointView.class)
    Point getPoint();
}

Comments

[Anar Amrastanov]

Yes. @JsonIgnore works. But class Point may be part of other class, which serialization must contain the "name" property of Point. I want specify serilization of class only by its interface. Is it possible?

[Anar Amrastanov]

There are problem with @JsonView. If class Point will have several other nested objects and each nested object will have their nested objects. With @JsonView I must set this annotation to all nested objects to include they in serialization. it is not nice considering that the chain of nested objects can be very large. I want that each class may set serialization view each nested objects

[Bohemian]

You could make a deep copy of the object and null the name field of its Point object.

[Anar Amrastanov]

Yes. deep copy may help. But I dont want write additional code for deep copy. I search nice solution of this problem

[Anar Amrastanov]

Bohemian, thanks for you help. I found solution of this problem. Annotation @JsonSerialize also must be setted in interface interface MapView { String getId(); @JsonSerialize(as = PointView.class) Point getPoint(); }

[Bohemian]

@anar you should post your solution as an answer to your own question (it's perfectly OK to do that)