Hi!

I've got system where bussiness side and client view (web) are separated. Connection between them is done by Hessian (or HtppInvoker). Hibernate is used on bussiness side and "spring" is used on both.
I want to transmit thorugh network some POJO-Hibernate objects but I've got two problems:
1) not so important - client has to have hibernate jar. is this ok?
2) when I want to transmit hibernate object with some relations (lazy-loaded) I've got LazyLoadException. I expected during serialization (done by hessian or httpinvoker) my hibernate object will be converted to REAL POJO - with all collections and so on - it looks I'm wrong. Is there any way to achieve this? I want to send through network real POJO class - not hibernate. How can i do this?

Regards
Lukjel

Your classes are real POJO, but Collections are still Hibernate's wrapped Collection classes - in order to hold reference to Session for eventual lazy-load.

Before sending them through the wire initialize all that you need - maybe an overhead, but that's the best you can do.

I think similar request has already been posted on this forum, so do a little search if there is some more info already.

You can transform your Hibernate objects to DTO's and clear them of Hibernate's dependency - otherwise you ofcourse need hibernate.jar on client's side.

Searched everywhere & found no util to unproxy collection so that hibernate specific stuff is not synchronize. Is there a specific tool you can point us to?

I tried to include hibernate jars on client side.. and got error

java.io.InvalidClassException: net.sf.hibernate.impl.SessionImpl$CollectionEntry; local class incompatible: stream classdesc serialVersionUID = 8642566097693392371, local class serialVersionUID = -2218466429640624909