plugging in an ajax progress bar component onto a black-box

[Julien Martin]

Hello,

I have the following problem: I want to integrate an ajax progress bar component to a j2ee application and I am in reference to the following pattern (https://bpcatalog.dev.java.net/nonav/ajax/progress-bar/design.html). It seems I need for the "task" component to return the percent. The problem I have is that I am calling a legacy method (i.e. as400) that does not return a percent as it is to me only a black-box. Here is a snippet of what it looks like to me:

  AS400 sys = new AS400("AS400D.calyonfinancial.com");
       sys.setUserId("jmartin");
       sys.setPassword("jmartin");
       CommandCall cmd = new CommandCall(sys);
       cmd.run("my as400 command goes here");
       AS400Message[] messageList = cmd.getMessageList();
       for (AS400Message msg : messageList) {
           System.out.println(msg.getText());       
       }
       sys.disconnectService(AS400.COMMAND);

At best I can know whether or not it is completed.

 void actionCompleted(ActionCompletedEvent event) //Invoked when an action has completed.
 

What do you advise I do bearing in mind I want to avoid using an indeterminate progress bar??

Thanks in advance,

Julien Martin.
[ January 08, 2007: Message edited by: Bear Bibeault ]