Hi, I have this class to track changes made in the DB,

public sealed class DocumentalModule : IModule
    {
        ...
        public void OnBuilt(Domain domain)
        {
            Domain = domain;
            domain.SessionOpen += (source, args) =>
            {
                args.Session.TransactionOpened += TransactionOpened;
                args.Session.TransactionCommitting += TransactionCommitting;
                args.Session.EntityFieldValueSetCompleted += (sender, e) => EntitySetEvent(sender, e);
            };
        }
        ...

        private void EntitySetEvent(object sender, EntityEventArgs e)
        {
            try
            {

                var vv = (EntityFieldValueSetEventArgs)e;
  ....

when changes affect a structure field, vv.NewValue == vv.OldValue. This is wrong, isn't?

Updated at 26.05.2010 9:04:02

DO 4.2.1

how fast Thanks,

Updated at 26.05.2010 10:32:08

1. There is an Entity in my domain model, let it be 'Animal'.
2. There is a Structure field in the Animal, say 'Options' which in turn contains a field 'TailNumber'.

3. I'm setting Animal.Options (not Animal.Options.TailNumber) with $SomeNewValue (with new structure) and receiving an event data in which OldValue == NewValue.

   public class Options : Structure { [Field] public int tailNumber { get; set; }

       [Field]
       public string colorEyes  { get; set; }
   }
   
   public class Animal : Entity
   {
       [Field, Key]
       public int Id { get; private set; }
   
       [Field]
       public Options options { get; set; }
   
   }
   

   ... Animal anim = new Animal(); Options eP1 = new Options(); eP1.tailNumber = 2; eP1.colorEyes = "yellow"; anim.options = eP1; Am I doing something wrong?

(I think OldValue and NewValue remain different until function SetValue, in StructureFieldAccessor class, if it can help you)

This thread was imported from our support forum. The original discussion may contain more detailed answer. Original topic by Petar.