io.realm.annotations

Annotation Type PrimaryKey

@Retention(value=CLASS)
 @Target(value=FIELD)
public @interface PrimaryKey

The @PrimaryKey annotation will mark a field as a primary key inside Realm. The field should uniquely identify the object. Trying to insert an object with an existing primary key will result in an RealmException. Primary keys on Strings also counts as having the Index annotation. Only one field pr. RealmObject class can have this annotation and it is only allowed on the following types: String, short, int, long, byte