TableView with TabBar using functions to reload de table without new ViewControllers

TableView with TabBar using functions to reload de table without new
ViewControllers

I have a TableView managed with CoreData and NSFetchedResultController. I
want to add a TabBar to my TableView and add some items like: favourites,
search and something else. Do I need a ViewController for each item? or
Could I add each Item to a function in the tableViewController and manage
the fetch queries there and reload the Table with the new fetch query?
Is this better to be manageg with a ToolBar instead of a TabBar?