Hooking into new Nhibernate features from Castle ActiveRecord

chrisortman — Wed, 09 Apr 2008 15:39:45 GMT

NHibernate has a lot of great new features. One of which is support for events.

However, if you are using Castle ActiveRecord you can't specify these things in the configuration like you normally could and must instead roll up your sleeves and do it programatically.

There are 2 hooks in ActiveRecord that we can use to accomplish our goal.

The first is SessionFactoryHolderCreated which will notify you that the thing that holds the NHibernate ISessionFactory is ready. The next is RootTypeRegistered which happens after the active record configuration has been turned into NHibernate configuration.

Here is a simple example

IConfigurationSource source = ConfigurationSettings.GetConfig("activerecord") as IConfigurationSource;
ActiveRecordStarter.SessionFactoryHolderCreated += (holder) => {
  holder.OnRootTypeRegistered += (sender, rootType) => {
    var mholder = sender as ISessionFactoryHolder;
    var nhConfig = mholder.GetConfiguration( rootType);
    nhConfig.EventListeners. PreUpdateEventListeners =
    new NHibernate.Event. IPreUpdateEventListener[] {new MyEventListener()}; 
  };
};

Technorati Tags: castle, nhibernate, .net

Quick Resharper Tip

chrisortman — Wed, 09 Apr 2008 02:26:33 GMT

I'm upgrading my NHibernate references to the new Alpha build and have to change a bunch of using declarations from NHibernate.Expressions to NHibernate.Criterion.

A simple way to have Resharper do this for you is to declare you own NHibernate.Expression namespace and rename it.

Resharper will then find anywhere you declared a using for it and update it. When you are done just remove your namespace declaration.

Technorati Tags: nhibernate, resharper

chrisortman : NHibernate

Hooking into new Nhibernate features from Castle ActiveRecord

Quick Resharper Tip