Dropwizard deserializing generic list from JerseyClient

Question

I wanted to implement a generic class to use for caching results from a REST API in a local MongoDB-instance. For this to work, I need to deserialize a collection I get from

Answer 1

You can use

import sun.reflect.generics.reflectiveObjects.ParameterizedTypeImpl;
import javax.ws.rs.core.GenericType;

 GenericType<List<T>> genericType = new GenericType<>( 
        ParameterizedTypeImpl.make( List.class, new Type[]{classType}, null));

Answer 2

Java's most popular excuse for Generics: Type Erasure

If you can pass your class type as Class<T> clazz, then you can use this:

GenericType<List<T>> genericType = new GenericType<>(new ParameterizedType() {
  public Type[] getActualTypeArguments() {
    return new Type[]{clazz};
  }

  public Type getRawType() {
    return List.class;
  }

  public Type getOwnerType() {
    return null;
  }
});
response.readEntity(genericType);