Super complicated query

Question

Hi. I have this query requirement:
public class Message implements Serializable {
    private Long id;
    private Subject sender;
    private Subject receiver;
}btw Subject has a "name" and "id"
the query shall select the "other person" engaged in conversation with the current user.
it seems to be a simple query but, the problem arises when the conversation is engaged by the other one, not by the current user, and the query shall select both cases...
i just am not such an expert in EJBQL so can someone please help..

Answer 1

<> mean not equals.
I have more experience with using plain Hibernate and Spring than using EJB 3.0. But I personally find EJB 3.0 to be orders of magnitude easier with almost no XML (except persistence.xml). I learnt to do in EJB, whatever I used to do with Spring + Hibernate in a couple of weeks. Today I can setup a development environment for a new project a lot faster with EJB 3.0 than with Spring + Hibernate. You may say it is just a one time activity, but still why go through the trouble when it can be avoided? :D
To me, a standard like EJB 3.0 is a boon because it lets me create highly portable and easily developed application archive, without having to worry about bundling a container, an ORM framework, a logging framework, a collections framework, a byte code manipulation framework, etc in my apps package.
Yes EJB 3.0 has its share of quirks, but then so do all frameworks and technologies! In this particular case, even Hibernate which is touted as the king of ORM frameworks, doesn't have a solution.