Hi,
I try to pass a collection of criteria from the "expression" package of hibernate to a Session bean method from a delegate object. I worked fine with JBoss but now I migrated my app to Websphere 5.0 and the server throws me a message indicating the criterion should be serializable.

I think the Criterion interface should extend the Serializable interface.

Is there any reason it is not Serializable ?

Thank you

I got the same prob.
Why isnt it serializable ?

By the way i AM working with jboss, so how did you get it working on jboss, cause for transmitting it to a remote method it must be serializable anyway..... ?!

Do anyone have the answer for this? Why isnt Criterion not serializable?

Becasue a criterion has to be attached to a session.
This is now solved in Hibernate 3 using the DettachedCriteria

It's actually the Criteria that needed the session wasn't it?

It's funny, we were talking about this at work this morning and I had done a small test just making Criterion and Order Serializable as we had some garbage to build up dynamic queries from the client and wanted to get rid of it.

Then I saw that you guys already implemented it for Beta 4, made my day. Just took a look at what was done and thought it was overkill at the start but then I realized that not everyone is building up their Criteria like we are currently. We currently work with a list of 'things' such as Criteria and Orders and 'InnerJoins' that we reassemble in the end. This should actually allow us to clean all of that out.

Thanks for the information. I can see Hibernate 3 beta 3 in the downloads page. I guess DetachedCriteria is available in Beta 4, not beta 3.
Any idea when will beta 4 will be downloadable?

Thanks

I probably better do a beta 4 sometime next week. If we leave it any later, it will need to be called "rc1".