dynamic caption for buttons in a grid view

I'm Vaadin beginner.
I intend to write a dynamic menu consisting of buttons arranged in grid view.
The captions of those buttons should be set dynamically from a result set of a JPA query.
I guess, it should somehow be possible to bind a button's caption to a field of a JPA container, where the button might hold an int property referring to the offset within the resultset of the query.

Example:

ResultSet of the query is:

Person
--------
"John"
"Henry"
"Jeffrey"
"Carl"

Grid Layout (2*2) defined as:
Button0      Button1
Button2      Button3

Grid Layout should be desplayed as:
John          Henry
Jeffrey       Carl

Does anyone have an idea how to bind the captions of the buttons to the values in the result set of the query?
I'm very grateful for every hint!

Hi, did you get a solution to this?