IInterceptor question

rcvdberg · **Joined:** Tue Dec 06, 2005 8:32 am **Posts:** 1

I am using an IInterceptor to overrule the onload method. The method itself returns a boolean that (for as far as i understand) should overrule the load (setting the properties) of the entity when you return "true" in the interceptor.

To do so I changed the following code in Impl\SessionImpl.cs:

Code:

public void InitializeEntity( object obj )
      {
         ..
         interceptor.OnLoad( obj, id, hydratedState, persister.PropertyNames, types );
         persister.SetPropertyValues( obj, hydratedState );
         ..

into:

Code:

public void InitializeEntity( object obj )
      {
         ..
         if(!interceptor.OnLoad( obj, id, hydratedState, persister.PropertyNames, types ))
            persister.SetPropertyValues( obj, hydratedState );
         ..

My Interceptor looks like:

Code:

public bool OnLoad(object entity, object id, object[] state, string[] propertyNames, NHibernate.Type.IType[] types)
{
   if(entity is SomeClass)
   {
      ((SomeClass)entity).NHPreLoad();
      for(Int32 i=0; i<state.Length; i++)
      {
         entity.GetType().GetProperty(propertyNames[i]).SetValue(entity, state[i], null);
      }
      ((SomeClass)entity).NHPostLoad();
      return true;
   }
   else
      return false;
}         

Is this correct?

xor · **Posted:** Mon Dec 12, 2005 5:50 am

As i understand from the documentation, it's supposed that you will change "state" array, if you want to somehow modify data being loaded. This method is not intended as a replacement for usual loading procedure.

As i see, you only need to call one method before load and another - at the end of loading procedure. Use IInterceptor.OnLoad and ILifecycle.OnLoad methods. Ther are called in this exact order.