service listener

[José Renato <jo...@suntech.com.br>]

Hi All,

I am using Axis2 v1.3 and I would like to know if is there a way to 
implement a service side listener that after a simple client call it 
notifies the client frequently? Many times until a final event, like a 
status notifier? For exemple, consider this client code:

//...
OperationServiceImplStub.AddOperationCallback addOperCallback = new 
OperationServiceImplStub.AddOperationCallback();
addOperCallback.setOperationBean(getOperBean());
addOperCallback.setReqInfoBean(getReqInfo());

//I know that this is invalid! Just to illustrate the idea...
addOperCallback.setCallback(new StatusListener() {
    public void statusChanged(StatusEvent se) {
        //Do something...
    }
});      
AddOperationCallbackResponse addOperRespose = 
operStub.addOperationCallback(addOperCallback);
//...

The service side:

//...
public OperationBean addOperationCallback(OperationBean oper, 
RequestInfoBean reqInfoBean, StatusListener callback) {
        operation = addOperation(oper, reqInfo);
        if (callback != null) {
            startCallback(oper, callback);
        }
        return oper;
}

//just emulates a state change workflow...
private void startCallback(final Operation oper, final StatusListener 
callback) {
        final String[] status = { "new", "activating", "active", 
"inactivating", "inactive" };
        Thread t = new Thread() {
            public void run() {
                Random r = new Random();
                for (int i = 0; i < status.length; i++) {
                    try {
                        Thread.sleep(r.nextInt(14) + 1);
                        StatusEvent se = new StatusEventImpl();
                        se.setStatus(oper.getId() + ':' + status[i]);
                        callback.statusChanged(se);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        };
        t.start();
}
//...

How can I fit this code to work properly?

Thanks a lot.
José Renato.

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