public class Main {

    public static void main(String[] args) {
        Resource.Factory.Registry.INSTANCE.getExtensionToFactoryMap().put("xmi", new ResourceFactoryImpl());
        ResourceSet rs = new ResourceSetImpl();
        AdapterImpl a = new AdapterImpl();
        rs.eAdapters().add(a);
        rs.eSetDeliver(false);
        for (int i = 0; i < 380000;i++) {
            if (i%1000==0) {
                System.out.println(i);
            }
            Resource r = rs.createResource(URI.createURI("dummy_"+i+".xmi"));
            r.eAdapters().add(a);
        }
        System.out.println("clearers gonna clear");
        rs.eSetDeliver(false);
        for (Resource r : rs.getResources()) {
//            r.eSetDeliver(false);
        }
        rs.getResources().clear();
        rs.eAdapters().clear();
        System.out.println("done");
    }

}