Text Box and an Update Button in pop up Window

Hi...All.

I'm working on a Vaadin project which involves JPA container, eclipselink, MySql. My question may be simple one but since i have little experience with Vaddin, I'm stuck .

Basically, I'm using a Table which contains 4-5 columns and the data are being fetched from MySql database. Every thing is working smoothly. What I got to have is a pop up window open on edit Button click corresponding to every item in the Table rows. A Pop up window should contain 2-3 TextBox and an Update Button. As the user type text in the TextBox and click on Update Button , popup window should get disappear and typed text into the Textbox should be reflected (Update the database value) in the database as well as in the Table rows corresponding to the row for which popup window was opened.

How the Entity classes are involved in this process ?

Any help is appreciated. Please any one provide me some example for the same or suggest me the link.

Thanks in advance.

Warm regards. !
Aatif.