Refreshing a view object after data external change

Question

Hi
I'm trying to refresh a viewobject based on a read-only query, the table data used on the query are updated by an other application
the problem that the view don't refresh its data from the database, it return always the same value
(but after leaving the page to another then getting back to my page the data is refreshed)
my code (periodically called by a poll):
vo.reset();
vo.setQueryMode(ViewObject.QUERY_MODE_SCAN_DATABASE_TABLES);
vo.setpIdUser(1);
vo.executeQuery();
if(vo.getRowCount()>0) {
r = (PosInstantaneRowImpl)vo.getCurrentRow(); //always just 1 row is returned
if(r.getIdtracking()!=null) {
val = r.getIdtracking();
System.out.println("Idtracking1: "+val); //print always the first value retrived when the page is loaded
i'm using JDev 11.1.1.2.0
database: mysql 5.2.11
ms windows 7
thanks for help.

Answer 1

the vo is generated via the an existing iterator on my page:
PosInstantaneImpl vo = (PosInstantaneImpl)iter.getViewObject();
i tried getting a new viewobject instance:
PosInstantaneImpl obj = (PosInstantaneImpl)app.findViewObject("PosInstantane1");
and executed the same code:
obj.setQueryMode(ViewObject.QUERY_MODE_SCAN_DATABASE_TABLES);
obj.setpIdUser(1);
obj.executeQuery();
if (obj.getRowCount() > 0) {
PosInstantaneRowImpl vr = (PosInstantaneRowImpl) obj.first();
System.out.println("Idtracking_ext: "+vr.getIdtracking());
the last code worked and gived the right data values, but the data of the vo from iterator still wrong!
Idtracking1: 590 //wrong value
Idtracking_ext: 591 //right value
Idtracking1: 590 //wrong value
Idtracking_ext: 592 //right value
any one have idea why this ? how can I refresh the vo generated from the iterator ? I need at the end to refresh a ritch table using the iterator.