What's the mechanism of setNotificationUri?

Please, correct me if I'm wrong somewhere.

ContentProvider calls something like this in query(…) method:

// Tell the cursor what uri to watch, so it knows when its source data changescursor.setNotificationUri(getContext().getContentResolver(), uri);

CursorLoader get cursor back and registers an observer.

/* Runs on a worker thread */@Overridepublic Cursor loadInBackground() {    Cursor cursor = getContext().getContentResolver().query(mUri, mProjection,            mSelection, mSelectionArgs, mSortOrder);    if (cursor != null) {        // Ensure the cursor window is filled        cursor.getCount();        registerContentObserver(cursor, mObserver);    }    return cursor;}/** * Registers an observer to get notifications from the content provider * when the cursor needs to be refreshed. */void registerContentObserver(Cursor cursor, ContentObserver observer) {    cursor.registerContentObserver(mObserver);}

When someone modifies data, ContentProvider notifies ContentResolver about changes:

getContext().getContentResolver().notifyChange(uri, null);

ContentResolver in its turn notifies all registered observers.

Observer, registered by CursorLoader, forces it to load new data.