Android : Android RX Observer to SQLite Database not working

I am trying to add an RX observer to my SQLite database and I am surely missing something from my implementation as neither the onNext() and onCompleted() methods from my observer are not getting called.

Here is my observer:

private final Observer<List<Order>> mObjectiveObserver = new Observer<List<Order>>() {
        @Override
        public void onCompleted() {
            System.out.println("Load completed");
        }

        @Override
        public void onError(Throwable e) {

        }

        @Override
        public void onNext(List<Order> objectives) {
            System.out.println("On Next: " + objectives.size() + " elements found!");
            orderAdapter.clear();
            if (objectives != null) {
                orderAdapter.addAll(objectives);
                mCirclePulseView.setVisibility(View.INVISIBLE);
            } else {
                mCirclePulseView.setVisibility(View.VISIBLE);
            }
            orderAdapter.notifyDataSetChanged();
        }
    };

These are my LoaderCallback methods:

@Override
    public Loader<Cursor> onCreateLoader(int loaderId, Bundle args) {
        Loader<Cursor> loader = null;
        switch (loaderId) {
            case LOADER_ORDERS:
                System.out.println("Create loader called");
                loader = new CursorLoader(OrderManagerApplication.getAppContext(), OrderManagerContract.Order.CONTENT_URI,
                        QueryOrder.PROJECTION_SIMPLE, null, null, OrderManagerContract.Order.DATE_SORT);
                break;
        }
        return loader;
    }

    @Override
    public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
        if (getActivity() == null) {
            return;
        }

        if (data != null && !data.isClosed()) {
            System.out.println("Finished loading orders, data not null");
            switch (loader.getId()) {
                case LOADER_ORDERS:

                    if (subscription != null && !subscription.isUnsubscribed()) {
                        subscription.unsubscribe();
                    }

                    subscription = AndroidObservable
                            .bindFragment(this, DatabaseHelper.mainOrdersObservable(data))
                            .subscribeOn(Schedulers.computation())
                            .unsubscribeOn(AndroidSchedulers.mainThread())
                            .subscribe(mObjectiveObserver);
                    System.out.println("I should be here, onLoadFinished");
                    break;
            }
        }
    }

    @Override
    public void onLoaderReset(Loader<Cursor> loader) {

    }

I have put logs everywhere in my code and they get printed as they should, except for this onNext and onCompleted methods. Any ideas what I might be missing from my implementation?