How to make an EJB reach a Vaadin UI

Asked Aug 26 '15 at 01:56

Active Aug 26 '15 at 01:56

Viewed 128 times

I wonder how to make an EJB Timer be able to reach my Vaadin UI to update a GUI component once the job in background is done.

Is there any way to get it? I tried to get the UI using UI.getCurrent() in my EJB method, but it returns null.

I noticed that getCurrent() method looks up in a InheritableThreadLocal map for all current instances, but my guess is the EJB thread is not associated to my UI Thread.

Let my any ideas.

Thanks!

asked Aug 26 '15 at 01:56

Carlos Alberto

7,761
13
52
72

Could you just store a reference to the UI instance somewhere? – Henri Kerola Aug 26 '15 at 03:54
Look at the Broadcast example in the `book of vaadin`: https://vaadin.com/book/-/page/advanced.push.html#advanced.push.pusharound – André Schild Aug 26 '15 at 06:13
I already tried to use Broadcast ,but UI instance returns null as well. – Carlos Alberto Aug 26 '15 at 15:14
Could you share your code, so we can have a look at what're you doing ? – Hassingard Apr 21 '16 at 07:28
I found out ejb and vaadin are in different containers, for example ejb can not access a thread running in a web container. – Carlos Alberto Apr 21 '16 at 15:01

How to make an EJB reach a Vaadin UI

0 Answers0