Problem in Initializing SessionFactory

[Saptarshi Chakraborty]

hi folks,
I am new to hibernate.I am using hibernate 3. I have a problem in initialization.I doing static initialization of SessionFactory like this

 static {
        try {
            // Create the SessionFactory from hibernate.cfg.xml
            sessionFactory = new Configuration().configure().buildSessionFactory();

        } catch (Throwable ex) {
            
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    } 

But the problem is I am putting the hibernate.cfg.xml in the WEB-INF directory.In doing so it cannot locate the configuration file and throwing exception /hibernate.cfg.xml not found
I know it can be written like

new Configuration().configure(fullpath).buildSessionFactory()

where

fullpath =getServletContext().getRealPath().

But how can i supply the fullpath from my Action class(I am using struts) to this java class. . At the same time I really want this static initialization to happen.
Please help me if anyone finds a solution to this problem.

[Cameron Wallace McKenzie]

Which development tool are you using?

Just put it in the root folder of your Java source code. Actually, at runtime it needs to go in the WEB-INF\classes folder, so make sure everything that is the source folder gets moved to the WEB-INF\classes folder at runtime.

As just a test, try copying the file into WEB-INF\classes and see what happens when you re-run it.

I'm assuming that this is a bit of learning and proof of concept, so your POJO classes are right there in your web module, right? We like to put POJO classes in a separate project or JAR when we're building a sophisticated project, but it tends to complicate things a little too much when you're just learning.

Here's a little tidbit on where to put the hibernate.cfg.xml file from my book Hibernate Made Easy.

Where do you put the hibernate.cfg.xml file???

Of course, if you're customizing the sample hibernate.cfg.xml file that comes with the Hibernate Core download, you'll have to save the edited file to a more conspicuous place on your workstation. The only rule about the hibernate.cfg.xml file is that it must be on your classpath. I typically place it in the src directory where I write my Java code, and make sure it gets copied into the build folder where my compiled byte-code gets placed. In this instance, I'm just going to save the hibernate.cfg.xml file in the C:\_hiblib folder, and make sure this folder is on the classpath whenever I compile or run my Java code.

Getting Started with Hibernate Tutorial



And post back. Don't leave us hanging on for an answer!

-Cameron McKenzie

[Saptarshi Chakraborty]

I am using Eclipse JBoss IDE . I tried that approach by copying the file to the classes directory and it worked fine,but is this a right approach ??In development time we put all the configuration files inside the WEB-INF directory just like struts-config.xml,web.xml.
Yes you are right right I put all the pojos,along with the *.hbm.xml files inside a different jar file .This is because I tried to follow the enterprise development structure and the design patterns (front-controller,business delegate, etc) and I am quite familiar with DAO pattern also .That is why I am trying the same approach simply by using hibernate instead of normal sqls .

[Cameron Wallace McKenzie]

I think your desire to put all the configuration files in the WEB-INF folder is a noble idea, but I think it might not be the right approach. Remember, that folder is for web centric configuration files. But hibernate.cfg.xml is not web-centric. I think you'd have a very difficult time convincing an architecture review board that having the hibernate.cfg.xml file in the WEB-INF folder was a defendable design. Maybe you can convince me otherwise?

-Cameron McKenzie