JDO and BeanItems

Vaadin 6 / 7 / 8 Framework Data Binding
1

I’m evaluating vaadin for building simple applications that might be deployed on Google App Engine. For that purpose, BeanItemContainer as used in the AddressBook demo is interesting. It would seem natural to extend the beans to be persistent by using JDO (since that’s one of the things GAE supports and it can be done with simple annotations).

I would like to understand how the java object can be made to listen to property changes and commits (i.e. the magic through which the Item back fills the POJO underneath). Is there an example I could look at with the proper listeners ?

Thanks in advance

2

Just to note - GAE compatibility in Vaadin is still under development. Please use nightly builds and report the problems back.

You can track the developments of the support here:
http://dev.vaadin.com/ticket/2835