/// <summary>
/// If the existing proxy is insufficiently "narrow" (derived), instantiate a new proxy
/// and overwrite the registration of the old one. This breaks == and occurs only for
/// "class" proxies rather than "interface" proxies. Also init the proxy to point to
/// the given target implementation if necessary.
/// </summary>
/// <param name="proxy">The proxy instance to be narrowed. </param>
/// <param name="persister">The persister for the proxied entity. </param>
/// <param name="key">The internal cache key for the proxied entity. </param>
/// <param name="obj">(optional) the actual proxied entity instance. </param>
/// <returns> An appropriately narrowed instance. </returns>
public object NarrowProxy(INHibernateProxy proxy, IEntityPersister persister, EntityKey key, object obj)
{
bool alreadyNarrow = persister.GetConcreteProxyClass(session.EntityMode).IsAssignableFrom(proxy.GetType());
if (!alreadyNarrow)
{
if (ProxyWarnLog.IsWarnEnabled)
{
ProxyWarnLog.Warn("Narrowing proxy to " + persister.GetConcreteProxyClass(session.EntityMode) + " - this operation breaks ==");
}
if (obj != null)
{
proxiesByKey.Remove(key);
return obj; //return the proxied object
}
else
{
proxy = (INHibernateProxy)persister.CreateProxy(key.Identifier, session);
proxiesByKey[key] = proxy; //overwrite old proxy
return proxy;
}
}
else
{
if (obj != null)
{
proxy.HibernateLazyInitializer.SetImplementation(obj);
}
return proxy;
}
}