Hello all,
I've tried Cayenne with JavaGroups. I've a problem.
I launch the same application on two PC. I've a GUI that show the
properties of a Cayenne object. I modify the object on the first
application and, after a manual update of the GUI (i.e. a repaint of the
propertes of a previously loaded - and displayed - instance of the
Cayenne object) I see the modified values.
Now I would like to use events in order to perform an automatic GUI
update when the same object is modified elsewhere. I have used the
following code:
dataContext = DataContext.createDataContext();
DataRowStore cache = dataContext.getObjectStore().getDataRowCache();
SnapshotEventListener customListener = new SnapshotEventListener() {
public void snapshotsChanged ( SnapshotEvent event ) {
System.out.println("*** Something ghanged! ***");
}
};
EventManager.getDefaultManager().addListener(
customListener,
"snapshotsChanged",
SnapshotEvent.class,
cache.getSnapshotEventSubject(),
cache
);
... read the object and display it on the GUI ...
What happened is: nothing! The listener is never called.
Now the questions:
1. Why? What I am missing?
2. In which thread the snapshotsChanged method is called? The same of
GUI (Swing/AWT) events?
Thanks in advance.
Claudio
Claudio Rosati
Project Manager Advanced Ccomputer Systems S.p.A.
via Della Bufalotta 378
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y&country=us>
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Italy
claudio.rosat..csys.it
www.acsmultimedia.com <http://www.acsmultimedia.com/>
tel: +39 06 8709 0516
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