auto-value

I'm running Eclipse Kepler SR2, with Maven 3.1.1 attached with the m2e and m2e-apt plugins, and I'm getting an error I don't know how to resolve. I managed to find all the dependencies needed to get @AutoValue working into my pom.xml, but now I'm in a state where it only works if the methods which need to be defined all have primitive return types. If I provide an abstract getter which returns an Object or more specific, I get this error: @AutoValue processor threw an exception: java.lang.IllegalArgumentException: Failed to invoke com.google.auto.value.processor.AutoValueProcessor$Property

Is it possible to use both Room persistence library 's @Entity with AutoValue 's @AutoValue and builder on the same POJO? How should i do it? AFAIK, as of 1.0.0-alpha3 , this is not possible. Room wants fields; AutoValue doesn't expose fields. Keep tabs on this feature request for progress in this area. This feature will be available in Room 2.1.0 https://issuetracker.google.com/issues/62408420#comment27 Following this task, apparently they added support. I assume it will be possible in the future Room release (probably androidx.room version 2.0.0). Still not merged as part of 2.0.0-beta1

I have an interface class that looks like this. public interface Species { String name(); } And a Human class that implements @AutoValue with a TypeAdapter. @AutoValue public abstract class Human implements Parcelable, Species { public static Human create(String humanVariable) { return new AutoValue_Human(humanVariable); } public static Human create(String name, String humanVariable) { return new AutoValue_Human(name, humanVariable); } public static TypeAdapter<Human> typeAdapter(Gson gson) { return new AutoValue_Human.GsonTypeAdapter(gson); } @SerializedName("name") public abstract String