App crash when update data inside realm

[chakracha1]

What happened?

The first time I insert data, it works successfully in Realm. But when I try to update it, the app crashes.
It data large. size of data from model

listOfConfigM: 2 record, activeConfig: 38 record, paramsActive: 629 record

Repro steps

1. Convert json to Realm Model
2. Call realm.addAll($realmObject, update: true); inside realm.writeAsync
3. Data saved in realm
4. Repeat it again from step 1, 2
5. App crash

Version

realm: ^20.1.1, Flutter 3.32.2, Dart 3.8.1

What Atlas Services are you using?

Local Database only

What type of application is this?

Flutter Application

Client OS and version

iOs 18.3

Code snippets

@RealmModel()
class $ConfigurationSchema {
    @PrimaryKey()
    late String name;
    late ConfigurationType? configType;
    late DateTime? lastModified;
    late DateTime? lastUpdated;
}

@RealmModel(ObjectType.embeddedObject)
class $ConfigurationType {
  late String? type;
  late MyConfituration? myConfiguration;
}

@RealmModel(ObjectType.embeddedObject)
class $MyConfituration {
  late List<$ConfigM> listOfConfigM;

}

@RealmModel(ObjectType.embeddedObject)
class $ConfigM {
  late String id;
  late String? name;
  late List<$ActiveConfig> activeConfig;
}

@RealmModel(ObjectType.embeddedObject)
class $ActiveConfig {
  late String id;
  late String? name;
  late String? type;
  late List<$PararamActive> paramsActive;
}

@RealmModel(ObjectType.embeddedObject)
class $PararamActive {
  late String id;
  late String? name;
  late RealmValue value;
}


var simpleConfigJson = '''
{
  "name": "simpleConfig",
  "configType": {
    "type": "myConfiguration",
    "myConfiguration": {
      "listOfConfigM": [
        {
          "id": "1",
          "name": "Config1",
          "activeConfig": [
            {
              "id": "1.1",
              "name": "ActiveConfig1",
              "type": "TypeA",
              "paramsActive": [
                {
                  "id": "1.1.1",
                  "name": "Param1",
                  "value": {"stringValue": "Value1"}
                },
                {
                  "id": "1.1.2",
                  "name": "Param2",
                  "value": false
                },
                {
                  "id": "1.1.3",
                  "name": "Param3",
                  "value": ["hello", "world"]
                }
              ]
            }
          ]
        }, 
        {
          "id": "2",
          "name": "Config2",
          "activeConfig": [
            {
              "id": "2.1",
              "name": "ActiveConfig2",
              "type": "TypeB",
              "paramsActive": [
                {
                  "id": "2.1.1",
                  "name": "Param2",
                  "value": 0
                }
              ]
            }
          ]
        }
      ]
    }
  },
  "lastModified": "${DateTime.now().toIso8601String()}",
  "lastUpdated": "${DateTime.now().toIso8601String()}"
}
''';

var confMap = jsonDecode(simpleConfigJson);
var configurationSchema = ConfigurationSchema(
  name: confMap['name'],
  configType: ConfigurationType(
    type: confMap['configType']['type'],
    myConfiguration: MyConfituration(
      listOfConfigM: (confMap['configType']['myConfiguration']['listOfConfigM'] as List)
          .map((item) => ConfigM(
            id: item['id'],
            name: item['name'],
            activeConfig: (item['activeConfig'] as List)
                .map((activeItem) => ActiveConfig(
                  id: activeItem['id'],
                  name: activeItem['name'],
                  type: activeItem['type'],
                  paramsActive: (activeItem['paramsActive'] as List)
                      .map((param) => PararamActive(
                        id: param['id'],
                        name: param['name'],
                        value: RealmValue.fromJson(param['value'])
                      )).toList()
                )).toList()
          )).toList()
    )
  ),
  lastModified: DateTime.parse(confMap['lastModified']),
  lastUpdated: DateTime.parse(confMap['lastUpdated'])
);


realm.writeAsync(() {
  realm.addAll([configurationSchema], update: true);
});

Stacktrace of the exception/crash you're getting

-

Relevant log output

-

[HemangSidapara]

same issue coming for me on iOS side

[HemangSidapara]

hello @chakracha1, did you find any solution yet?

[chakracha1]

hello @chakracha1, did you find any solution yet?

What I can do for now is change the schema by removing ObjectType.embeddedObject from all @RealmModel declarations. Then, during the Realm migration, I'll back up all the data, delete the existing Realm file, create a new one, and restore the backup into it.