Getting the right JavaType TypeFactory

Question

I have to deserialize my Java Object and I can't use static reference i.e TypeReference.

Like,

mentioned in here

So, I am left with is generating the right Javatype using type factory, but somehow I am not able to get the syntax right.

Aforementioned are my Classes and Interfaces.

public interface Request {}

public interface Response {}

public class MyRequest implements Request {
int id;

//Getter //Setter
}

public class MyResponse implements Response {
int id;

//Getter //Setter
}

public class UberObject<S extends Request, T extends Response> implements Serializable {
private S request;
private T response;

//Getter//Setter
}

public class UberObjectWithId<S extends Request, T extends Response> extends UberObject<S, T> {
private int id;

//Getter //Setter
}

UberObjectWithId typereferencedObject = 

objectmapperobject.readValue(serialisedUberObjectWithId,

new TypeReference<UberObjectWithId<MyRequest, MyResponse>>() {});

The above approach works but I can't use TypeReference because of the limitation mentioned in the above link.

I tried using the Typefactory to retrieve the JavaType but I am not able to get the syntax right.

JavaType type = mapper.getTypeFactory().constructParametrizedType(UberObjectWithId.class,
                UberObject.class, Request.class, Response.class);

but the call fails

objectmapperobject.readValue(serialisedUberObjectWithId, type);

How can I resolve my particular problem?

Answer 1

I fixed it by using the correct syntax to generate the JavaType

JavaType type = mapper.getTypeFactory().constructParametrizedType(UberObjectWithId.class,
                UberObject.class, MyRequest.class, MyResponse.class);

It requires concrete classes while deserializing.