Realm backlinks 2: manual bi-directional links

realm-backlinks-2.java

public class Dog extends RealmObject {
    @PrimaryKey
    private String id;
  
    private int age;
  
    private Person owner; // <--- !!!
    
    // getters, setters
}

public class Person extends RealmObject {
    @PrimaryKey
    private String id;
  
    private String name;
  
    private RealmList<Dog> dogs;
  
    // getters, setters
}

// creating objects
r.executeTransaction((realm) -> {
    Dog dog = realm.createObject(Dog.class, "dogId");
    Person person = realm.createObject(Person.class, "personId");
    person.getDogs().add(dog);
    dog.setOwner(person); // <--- !!!
});

// link query
RealmResults<Dog> dogs = realm.where(Dog.class)
                              .equalTo("owner.name", "Jack")
                              .findAll();