Calling a long running process asynchronously on a button click in JSF

Question

I want to execute a stored proc by clicking on a button developed in JSF and Java. The proc takes roughly around 30 minutes in execution.

When the user clicks on thi

Answer 1

Just trigger an @Asynchronous EJB method. It'll fire and forget a separate thread and the bean action method will immediately return.

@Named
public class Bean {

    @EJB
    private Service service;

    public void submit() {
        service.asyncDoSomething();

        // Add message here.
    }

}

@Stateless
public class Service {

    @Asynchronous
    public void asyncDoSomething() {
        // ...
    }

}

See also:

• Is it safe to start a new thread in a JSF managed bean?
• How can server push asynchronous changes to a HTML page created by JSF?