Have you tried calling SaveCopy instead of Save?
On Wed, Aug 5, 2009 at 2:03 AM, jsmorris <[email protected]> wrote:
>
> I am attempting to use NHibernate Events to audit my ActiveRecord
> objects for changes. My attempts have always resulted in the OldState
> on the PreUpdateEvent object is null. Thus, I cannot check if the
> State has changed. In the below code, in the FindDirty method,
> @event.OldState is null.
>
> Searching the net has helped me construct my sample code, but others
> have mentioned this null oldstate problem as well. The answers to fix
> the problem have generally referred to NHibernate based solutions (and
> I am not sure I understand them), but was wondering if anyone has
> ideas how to fix this using ActiveRecord.
>
> Thanks,
> Jason
>
> My current sample code
>
> [TestFixture]
> public class SampleEventListenerTestFixture : DomainTestFixture<Sample>
> {
> [Test]
> public void Update()
> {
> var sample = new Sample() { Name = "OldName" };
>
> sample.Save();
>
> sample.Name = "New Name";
>
> sample.Save();
> }
> }
>
> [EventListener]
> public class SampleEventListener : IPreUpdateEventListener,
> IPostUpdateEventListener
> {
> public void OnPostUpdate(PostUpdateEvent @event)
> {
> var entity = @event.Entity as Sample;
>
> if (entity == null)
> return;
> }
>
> public Boolean OnPreUpdate(PreUpdateEvent @event)
> {
> FindDirty(@event);
>
> return false;
> }
>
> private static void FindDirty(PreUpdateEvent @event)
> {
> var dirtyFieldIndexes =
> @event.Persister.FindDirty(@event.State, @event.OldState,
> @event.Entity, @event.Session);
>
> foreach (var dirtyFieldIndex in dirtyFieldIndexes)
> {
> var oldValue = @event.OldState[dirtyFieldIndex];
> var newValue = @event.State[dirtyFieldIndex];
>
> // Log values to new "AuditLog" object and save
> appropriately.
> }
> }
> }
>
> [ActiveRecord]
> public class Sample : DomainObject<Sample>
> {
> [Castle.ActiveRecord.Property]
> public String Name { get; set; }
> }
>
> >
>
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