OfflineFirstDeletePolicy.localOnly

[stefanorumi7]

Scenario

• After executing some remote function I am needing to delete from the local cache and SQLite DB some entities.
• When I do this with OfflineFirstDeletePolicy.optimisticLocal it does the local job, but it also sends the request to the remote DB to delete those entities (I want to avoid this).

Solution

Implementation of OfflineFirstDeletePolicy.localOnly that deletes the instances from the local storages but not from the remote.

Implementation

@tshedor I will leave a PR soon.

[stefanorumi7]

Pull request: #633

[stefanorumi7]

While this PR is not merged, I got a recommendation to workaround without this new abstraction.

  Future<void> deleteLocal(EntityType entity) async {
    try {
      BrickRepository().memoryCacheProvider.delete<EntityType>(entity);
      final sqliteResult = await BrickRepository().sqliteProvider
          .delete<EntityType>(entity);
      if (sqliteResult == 0) {
        throw ApiError(code: 404, message: 'Deletion failed');
      }
    } on ApiError catch (_) {
      rethrow;
    } catch (e, stacktrace) {
      throw ApiError(code: 0, message: '$e: $stacktrace');
    }
  }

[stefanorumi7]

@richard457 this comment might help you on the meantime.