Found the problem. have to register a GraphEvent with the DataChannel to
capture DataContext rollbacks but you can register DataContextEvent's with
the DataContext to capture commits and willCommit. A little bit confusing...
EventManager eventManager = this.getDataContext().getEventManager();
//this never happens and not sure why
//gets registered but i believe will only fire if there is an
exception in a
// commit and the transaction is rolledback
eventManager.addListener(
this,
"dataContextDidRollback",
DataContextEvent.class,
DataContext.DID_ROLLBACK,
this.getDataContext());
//registers and fires the event eventManager.addListener(
this,
"dataContextDidRollback",
GraphEvent.class,
DataChannel.GRAPH_ROLLEDBACK_SUBJECT,
this.getDataContext());
On 30/10/06, edward pedersson <[EMAIL PROTECTED]> wrote:
Hi
I am trying to capture the a rollback event from the dataContext and I
have tried variation of the code below but nothing seems to work. My event
handlers never get called. I would have used the DataObject jandlers but
they don't support rollBack.
Can anyone see what I am doing wrong? Many thnaks for your help.
public class SomeDataObject() extends MyDataObject {
public static DataContextTransactionEventListener
dataContextTransactionListener = new DataContextTransactionEventListener() {
public void dataContextDidCommit(DataContextEvent event) {
System.out.println("*** xxSomething changed! DID_COMMIT ***");
}
public void dataContextDidRollback(DataContextEvent event) {
System.out.println("*** xxSomething changed! ROLLEDBACK
***");
}
public void dataContextWillCommit(DataContextEvent event) {
System.out.println("*** xxSomething changed! WILL_COMMIT
***");
}
};
public static DataChannelListener dataChannelListener = new
DataChannelListener() {
public void graphChanged(GraphEvent event) {
System.out.println("*** Something changed! DID_COMMIT ***");
}
public void graphFlushed(GraphEvent event) {
System.out.println("*** Something changed! ROLLEDBACK ***");
}
public void graphRolledback(GraphEvent event) {
System.out.println("*** Something changed! WILL_COMMIT
***");
}
};
@Override
public void fetchFinished() {
super.fetchFinished ();
System.out.println("*** FETCH FINISHED! ***" + this.toString());
// this.getDataContext() is DataContext.getThreadedContext()
this.getDataContext().setTransactionEventsEnabled(true);
DataContext.setTransactionEventsEnabledDefault(true);
EventUtil.listenForChannelEvents(this.getDataContext().getChannel(),
dataChannelListener);
EventManager.getDefaultManager().addListener(dataContextTransactionListener,"dataContextDidRollback",
DataContextEvent.class,DataContext.DID_ROLLBACK, null);
}
....more methods
}
--
-- e
--
-- e
