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20030531 Saturday May 31, 2003

Hibernate PlugIn for Struts I don't know that there's a need for a Hibernate PlugIn for Struts, but I wrote one today just for kicks. Pretty simple stuff that only requires you to have hibernate.cfg.xml in your WEB-INF/classes directory, and to add the following to your struts-config.xml. 

<plug-in className="org.appfuse.webapp.util.HibernatePlugIn"/>

Then create the file org.appfuse.webapp.util.HibernatePlugIn as follows:

public class HibernatePlugIn implements PlugIn {
    //~ Instance fields ========================================================

    private Log log = LogFactory.getLog(HibernatePlugIn.class);

    //~ Methods ================================================================

    public void init(ActionServlet servlet, ModuleConfig config)
    throws ServletException {
        try {
            SessionFactory sf =
                new Configuration().configure().buildSessionFactory();

            if (log.isDebugEnabled()) {
                log.debug("Hibernate configuration completed.");
            }
        } catch (HibernateException h) {
            log.fatal("Error configuring Hibernate!", h);
        }
    }

    public void destroy() {}
}

This doesn't seem to have any advantages over using a StartupListener, but it would be pretty sweet if it was included with Struts (or Hibernate), so you could simply put it in struts-config.xml and be done with it. Posted in Java at May 31 2003, 11:31:41 AM MDT 2 Comments

Comments:

Why do you want to tie your database layer into your UI layer? That really isn't smart if you want your app to be flexible.

Posted by No one on May 31, 2003 at 01:04 PM MDT #

Because I'm opening a Hibernate session in the view - as this design pattern suggests. Also, Hibernate needs to be initialized when the app starts if you want to use a JNDI connection.

Posted by Matt Raible on May 31, 2003 at 01:14 PM MDT #

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