subtype error

[mnordine]

I'm getting the following error when using the transformer:

Exception: type 'MyClass' is not a subtype of type 'StaticEntity' of 'clazz' where
  MyClass is from package:entities/src/entities_base.dart
  StaticEntity is from package:dartson/src/static_entity.dart

  Dartson.map   
  Dartson.decode    
  main  

[eredo]

Did you add the @Entity() annotation to your object classes (MyClass) which are serialized / deserialized?

[mnordine]

Yes, here's my entity:

import 'package:dartson/dartson.dart';

@Entity()
class MyClass
{
  int id;
}

And in the main package, main.dart:

import 'package:dartson/dartson.dart';
import 'dart:convert' show JSON;
import 'package:entities/entities.dart';

main()
{
  final dartson = new Dartson.JSON();

  final map = {'id': 0};

  MyClass decoded = dartson.decode(JSON.encode(map), new MyClass());
  print(decoded.id);
}

and pubspec.yaml:

name: 'web_dartson_test'
version: 0.0.1
description: An absolute bare-bones web app.

environment:
  sdk: '>=1.0.0 <2.0.0'

dependencies:
  browser: '>=0.10.0 <0.11.0'
  dart_to_js_script_rewriter: '^1.0.1'
  dartson: ^0.2.5
  entities:
    path: ../entities

transformers:
- dartson
- dart_to_js_script_rewriter

[eredo]

How does your pubspec.yaml look like?

[mnordine]

It's there in the previous comment

[mnordine]

Also, here's the pubspec.yaml from the entities library:

name: entities
description: A starting point for Dart libraries or applications.
version: 0.0.1

environment:
  sdk: '>=1.0.0 <2.0.0'

dependencies:
  dartson: any

dev_dependencies:
  test: '>=0.12.0 <0.13.0'

[eredo]

Dartson currently doesn't support entities in dependencies, because transformers do not have access to those source files. Not sure if it works if you place the transformer also in your entities project. Haven't had the chance to test that yet.

[mnordine]

What's interesting is that if I add dartson transformer to the entities library in my simple test case presented here, it works. However, it doesn't work for my much more complex project. I'll try to nail down a simple test case that fails.

[mnordine]

I figured it out. In my entity class file, I was using the following line for importing dartson:

import 'package:dartson/dartson.dart' show Entity;

I needed to remove

show Entity

since the transformer adds other classes, such as

implements StaticEntity

hence the error you see above.