Support embedded objects

[rorbech]

We should support defining realm objects as embedded to indicate that object life cycle should follow its parent.

[rorbech]

Requires C-API support: realm/realm-core#5408

[thipokch]

@rorbech
I believe release 11.15.0 ( https://github.com/realm/realm-core/blob/master/CHANGELOG.md#11150-release-notes ) includes the C-API for embedded object. I'll be happy to help out if you need a hand.

[rorbech]

@rorbech I believe release 11.15.0 already included the C-API for embedded object: https://github.com/realm/realm-core/blob/master/CHANGELOG.md#11150-release-notes

@thipokch Yep. The core part is already in place and included in the PR #797.

[thipokch]

@rorbech Congrats on the GA release! 🎉 I'm so looking forward to trying embedded objects out.

[thipokch]

@rorbech
Quick question: Does the embedded object support a sealed interface polymorphism as RealmObject does?

class Home() : RealmObject {
  var pets : RealmList<Animal> = realmListOf()
}

sealed interface Animal {
  class Dog(): Animal, RealmObject {
    // ...
  }
  class Cat(): Animal, RealmObject {
     // ...
  }
}

[rorbech]

Quick question: Does the embedded object support a sealed interface polymorphism as RealmObject does?

@thipokch We don't support polymorphic inheritance on neither RealmObject nor EmbeddedObject. You can track support for that through #801.