Hello again,
only for testing i changed the Nhibernate ActionQueue code;
it seems works. (but i'm still waiting for another legal ways. :)))) I
mailed this only for sharing )
private void ExecuteActions(IList list)
{
//this prevents throwing exception if collection changes.
int actionCount = list.Count;
for (int i = 0; i < actionCount; i++)
{
Execute(list[i] as IExecutable);
}
//if something added by the event listeners. this code execute
additions
int newActions = list.Count;
for (int i = actionCount; i < newActions; i++)
{
Execute(list[i] as IExecutable);
}
list.Clear();
session.Batcher.ExecuteBatch();
}
it is works on insert operations but insert operations are first executed.
(we have to make history for update,delete also)
so i've changed,
/// <summary>
/// Perform all currently queued actions.
/// </summary>
public void ExecuteActions()
{
ExecuteActions(insertions);
ExecuteActions(updates);
ExecuteActions(collectionRemovals);
ExecuteActions(collectionUpdates);
ExecuteActions(collectionCreations);
ExecuteActions(deletions);
//if something added after insert the executions.
ExecuteActions(insertions);
}
10 Nisan 2009 Cuma 11:58 tarihinde Fethi Gürcan <[email protected]>yazdı:
> Hello,
>
> I'm trying to add some history info about insert,update,delete events.
> With log4net, or another way (separate session) it is works. But I'm trying
> to do it in same transaction with the process.
>
> For that case,
>
> I've created a event listener class;
>
> public class AuditEventListener :
> IPostUpdateEventListener,IPostInsertEventListener,IPostDeleteEventListener
>
> And i've created a History entity class.
>
> In the events i've wrote,
>
> public void OnPostInsert(PostInsertEvent @event)
> {
> //no history for History type, and prevents recurrence
> if (@event.Entity.GetType().Equals(typeof(History)))
> return;
>
> History history = new History();
> .....
> .....
>
> @event.Session.Save(history);
> }
>
>
> But it seems, I'm breaking the queue action of nHibernate :(
>
> It is about NHibernate.Engine.ActionQueue class'es ExecuteActions method.
>
> private void ExecuteActions(IList list)
> {
> foreach (IExecutable executable in list)
> Execute(executable);
>
> list.Clear();
> session.Batcher.ExecuteBatch();
> }
>
> it throws an InvalidOperationException (Collection was modified;
> enumeration operation may not execute.).
>
> It is totally understandable issue. (i'd add another action to queue while
> nhibernate processing the queue)
>
> Do you have any suggestion to do this thing in another way???
>
> If not, i can change the code of
> NHibernate.Engine.ActionQueue.ExecuteActions methods to prevent this error.
> (I'm not sure, if i change, it will throws another exception in another
> method.)
> (Changing the nhibernate source is the last way i think.)
>
> Thanks.
> --
> Fethi Gürcan
>
--
Fethi Gürcan
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