OpenXava

Layout

Defining the layout of elements in the UI is simple using the annotation @View. You can use , (comma) for separate properties and ; (semicolon) for new line. You can also arrangue the data within sections using {}, even you can nest sections. With the next code you obtain the above UI:

@View(members=
  "year, number, date;" +
  "customer { customer }" +
  "data {" +                       
  "    details { details }" +      
  "    amounts {" +      
  "        vat { vatPercentage; vat }" +                     
  "        amountsSum { amountsSum }" +      
  "    }" +                     
  "}" +                             
  "deliveries { deliveries }"       
)
public class Invoice { 

Embedded-like collections

Embedded collections are not supported by JPA 1.0, however you can use REMOVE as cascade type in your collection, and then OpenXava will generated a UI for the collections that allows you add and edit the collection elements, just as a embedded collection. Look at the example of details of Invoice:

@OneToMany (mappedBy="invoice", cascade=CascadeType.REMOVE)
private Collection<InvoiceDetail> details;