RelationalDatumEntityMixin mixin

A mixin that provides relational functionality for Datum entities.

Use this mixin when you want to compose Datum's relational capabilities into your own base classes, allowing for a clean and maintainable architecture without extending RelationalDatumEntity.

Important: Use either DatumEntityMixin OR RelationalDatumEntityMixin, not both. RelationalDatumEntityMixin provides all the functionality of DatumEntityMixin plus relational capabilities.

class MyEntity with RelationalDatumEntityMixin {
  @override
  final String id;
  @override
  final String userId;
  @override
  final DateTime modifiedAt;
  @override
  final DateTime createdAt;
  @override
  final int version;
  @override
  final bool isDeleted;

  // Your custom fields...

  @override
  Map<String, Relation> get relations => {
    'author': BelongsTo<User>(this, 'userId'),
  };

  @override
  Map<String, dynamic> toDatumMap({MapTarget target = MapTarget.local}) {
    // Implementation...
  }

  @override
  DatumEntityInterface copyWith({DateTime? modifiedAt, int? version, bool? isDeleted}) {
    // Implementation...
  }

  @override
  Map<String, dynamic>? diff(covariant DatumEntityInterface oldVersion) {
    // Implementation...
  }
}