Objectbox 是否支持具有多个多对多关系 (M:N) ？ 例如：
// MIX with @Backlink and no @Backlink --> causes Error in this class
@Entity()
class Exercise {
int id;
String title;
String description;
final unitTypes = ToMany<UnitType>();
// Many To Many with Equipment
@Backlink()
final equipments = ToMany<Equipment>();
... Constructor etc.
}
// NO mix with @Backlink and no @Backlink --> no Error in this class
@Entity()
class UnitType{
int id;
String title;
@Backlink()
final exercises = ToMany<Exercises>();
@Backlink()
final units = ToMany<Unit>();
... Constructor etc.
}
@Entity()
class Unit{
int id;
String title;
String short;
final unitType = ToOne<UnitType>();
... Constructor etc.
}
就我的测试而言，我在一个类中使用多个多对多关系尝试的所有构建都失败了。抛出类似这样的错误：
could not format because the source could not be parsed:
line 1078, column 212 of .: Expected to find '}'.
╷
1078 │ toManyRelations: (Exercise object) => {RelInfo<Exercise>.toMany(27, object.id): object.unitTypesRelInfo<ExerciseEquipment>.toOneBacklink(3, object.id, (ExerciseEquipment srcObject) => srcObject.exercise): object.exerciseEquipments,
那么有没有办法在 ObjectBox 中完成这项工作，或者我是否必须使用另一个具有一对多关系的 Binder 类，例如在 Exercise 和 UnitType 之间 --> ExerciseUnitType （这个解决方法对我有用，但是不漂亮，并且显着增加了对额外类和额外存储数据的需求）
@Entity()
class ExerciseUnitType{
int id;
String title;
@Backlink()
final exercise= ToOne<Exercise>();
@Backlink()
final unitType = ToOne<UnitType>();
... Constructor etc.
}