Repository Design Pattern

While developing Android applications in most of them you need to persist data in some kind of storage. In most cases this storage will be SQLite. Probably you want to access data in readable and easy way. What do you do then? Yes… you look for nice looking ORM. You can start to…

I’m wondering if query() implementation can be improved, by keeping a reference to the Cursor for each Specification, and register content observer/dataset observer in case query results change due to added/removed/updated items (for the case of using SQLite DB)?