flutter_db_inspector_objectbox

ObjectBox adapter for Flutter DB Inspector.

ObjectBox's Dart API is generated per entity and has no untyped access, so each box is registered with a small typed binding that converts objects to and from JSON-like maps.

Install

dependencies:
  flutter_db_inspector: ^1.0.0
  flutter_db_inspector_objectbox: ^1.0.0
  objectbox: ^5.0.0

Register

import 'package:flutter_db_inspector/flutter_db_inspector.dart';
import 'package:flutter_db_inspector_objectbox/flutter_db_inspector_objectbox.dart';

final store = await openStore();

DbInspector.initialize(enabled: kDebugMode);
DbInspector.registerDatabase(
  name: 'objectbox',
  adapter: ObjectBoxAdapter(store, [
    ObjectBoxCollection<Task>(
      store.box<Task>(),
      name: 'Task',
      toJson: (t) => {'id': t.id, 'title': t.title, 'due': t.due},
      fromJson: (j) => Task(
        id: j['id'] as int? ?? 0, // 0 = let ObjectBox assign an id
        title: j['title'] as String? ?? '',
        due: j['due'] as DateTime?,
      ),
      getId: (t) => t.id,
    ),
  ]),
);

• toJson values may be int, double, String, bool, DateTime, Uint8List, lists and maps.
• fromJson receives the whole document: on update the stored object's toJson() merged with the edited fields. Throwing a TypeError (e.g. a failed cast) is reported to the client as an invalid value.
• Pass fields to declare columns; otherwise they are inferred from stored objects. Use idField if the id is not called id.

Limitations

• Filtering, sorting and search run in memory in the generic engine (bounded by maxScanDocuments), because ObjectBox query conditions require the generated Entity_ properties. Paging and counts use ObjectBox queries.
• Relations (ToOne/ToMany) are only shown if your toJson includes them.
• Inserting with an explicit id requires @Id(assignable: true).

Tests

The tests use a real ObjectBox store. On the first run they download the objectbox-c library for the host (macOS or Linux) into .dart_tool/objectbox and load it into the test process; they are tagged native (dart test -x native skips them). Regenerate test/objectbox.g.dart with dart run build_runner build.