Inheritance / Polymorphism

A highly request feature is polymorphism. Mostly for use in ListAdapters, but a lot of other scenarios exists.

We need support for the following:

• Abstract RealmObject classes
• Query support

Example

public abstract Animal extends RealmObject {
  private String name;
}

public class Dog extends Animal {
  private boolean willPlayCatch;
}

public class Spider extends Animal {
  private boolean isScary;
}

// Following should be possible
RealmResults<Animal> animals = realm.where(Animal.class).equalsTo("name","Foo").findAll();
String name = animals.get(0).getName();

RealmResults<Dog> dogs = realm.where(Dog.class).equalsTo("name","Foo").and().equalsTo("willPlayCatch", true).findAll();
String name = dogs.get(0).getName();

[cmelchior]

Hi @T-Spoon We have a couple of other major features we would like to look at first, so we don’t have a timeframe yet, sorry. If inheritance is a dealbreaker for you, you should probably not use us this time around. But we do hope you will come back 😃

[Drakuwa]

Oh come on people, do not just comment “+1”, I know my comment also has no point, but, you could all just subscribe to the thread and wait for an actual valid response from someone from the team. This way you’re not just flooding the issue with unnecessary entries…