How to give a message in the UI page if there is an error in AppImpl method

Question

How to give an error message in the jsf page if the AppImpl method fails ?
Use case : I have a create form and a submit button which binds with a client interface method in Application Impl class. If the method fails due to some exception , how can I notify the users with proper error message ?
Thanks
Suneesh

Answer 1

Hi,
As the previous reply (casting the result) is the best solution here (separating model and view logic) but sometimes we do a shortcut.
may be it is not the best approach but it comes handy most of the time, this approach is also error-proven. we used it more than 2 years in large applications.
add the following code whenever you want to add message in UI be aware that we have add it in a jar and add that library to the model projects
FacesContext ctx = getFacesContext();
FacesMessage fm = new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, "");
ctx.addMessage(null, fm);
you just need to add jsf library to the model applications and replace msg with your message.
regarding throw jboException, it seems good most of the time but sometimes when you are in middle of the transaction it somehow ruin the flow of the transactions.
Regards.