Update UI (@Push) from Quartz JobListener

Vaadin 6 / 7 / 8
1

Hello all,

is it possible to update the UI when Quartz is firing an event?
I want to build a status page so the user can see if a Job is currently running or had an error the previous run.

The JobView implements the JobListener interface, iterates over all Jobs and Displays a component (name, nextFireTime, …).
Now I want to update the custom Component (CssLayout) to show if the job is currently running by calling the update(statusCode) function for the component from the jobToBeExecuted Listener.

Now I can’t call UI.getCurrent().access(new Runnable() { … }); in the update function because I get a NullPointerException (UI is null)

Any help would be appreciated.

Thanks

2

You can call access when you give the UI instance e.g. as an constructor param to the Class where the update function is in.
UI.getCurrent doesn´t work from background threads.

Hope this helps

3

Hello,

thanks, defining a UI Class Variable and giving it to the update(status, currentUI) function did work.

Thanks!