Hi,
I'm a new comer to Hibernate, and I need to clarify a point, sorry if it is a silly question...

Let's say I have a simple bean class that I want to make persistent using Hibernate. If I understand well, the bytecode of my class will be enhanced at runtime. Therefore, hibernate.jar will be needed in my classpath at runtime. Is that correct?

Knowing that, I've been told that it was possible to "unenhance" my object, making it depending no more of hibernate.ar...is that also correct? and if so, how to do that?

thanks a lot for your help!

you want to use Hibernate without having hibernate.jar ?

no...
here is my point:

I have a 3-tiers architecture. my persistent bean class is used in the data tier, and obviously I will have hibernate.jar in the runtime classpath of this tier. however, let's say after having loaded an instance of my bean from the database, I want to send this instance to my presentation layer using serialization for example. And I don't want my presentation runtime classpath to contain hibernate.jar. therefore I think I have to "unenhance" my bean instance before sending it to the presentation layer...

does that make sense?

thanks!

you may use Data Transfer Objet (not persistent) in your presentation layer, the problem is that you'll lose all lazy loading ability...

I now that. but I try to understand the enhancement mechanism.
Once the objects are enhanced, that need hibernate.jar in my classpath, right?
Is there anyway to get rid of this enhanced code at runtime so I need no more hibernate.jar?

Hibernate will generate new class for wrapper or will use persistent collection implementation for collections.
It wrapps persistent object for lazy loading and this feature is optional,
if you will unwrapp object you will lose the feature.
If you do not need this feature, just do not use it and your persistent objects will be plain objects without dependancies on hibernate.