Listener class not mapping Hibernate xmls

[Frank Serkland]

I feel like an idiot for asking this, so I hope you all won't hold it against me. I'm hard enough on myself. My listener class is failing because it can't find my Hibernate configuration files. I'm just about positive it's because I'm specifying the wrong location. Here is the operative part of my listener class.

public class ConfigurationListener implements ServletContextListener {
	private Configuration configuration = new Configuration();
	private ServletContext context;
	private SessionFactory sessions;

	public void contextInitialized(ServletContextEvent contextEvent) {
		this.configuration.addResource("/src/Comment.hbm.xml");
		this.configuration.addResource("/src/Poll1.hbm.xml");
		this.configuration.addResource("/src/Poll2.hbm.xml");
		this.configuration.addClass(model.Comment.class);
		this.configuration.addClass(model.Poll1.class);
		this.configuration.addClass(model.Poll2.class);
		this.sessions = configuration.buildSessionFactory();
		this.context = contextEvent.getServletContext();
		this.context.setAttribute("sessions", sessions);
	}

	// contextDestroyed implemented after this, but not relevant for this question
}

Here is my error message.

SEVERE: Exception sending context initialized event to listener instance of class configuration.ConfigurationListener
org.hibernate.MappingException: Resource: /src/Comment.hbm.xml not found

Here is my file structure. I'm using Eclipse, if it makes any difference.

C:\
	ghs86reunion\
		GHS86Reunion\
			src\
				Comment.hbm.xml
				Poll1.hbm.xml
				Poll2.hbm.xml

[Paul Clapham]

No, you aren't using Eclipse. You're using some servlet container. And you have to specify the paths based on where the files are in the container, not where they were in your development environment.

So there's no "src" directory in your web application when it's in the servlet container. There's a WEB-INF/classes directory and hopefully Eclipse's deploy procedure copied the files from your project's src directory to there. If that's the case then I would recommend this sort of change:

this.configuration.addResource("/Comment.hbm.xml");

[Frank Serkland]

Paul, I tried your change, and it didn't work. Here is the structure that I found Eclipse deployed to.

C:\  
    ghs86reunion\  
        GHS86Reunion\  
            bin\  
                Comment.hbm.xml  
                Poll1.hbm.xml  
                Poll2.hbm.xml

[Naren Chivukula]

this.configuration.addResource("/src/Comment.hbm.xml");

Resources have to be accessed from the application classpath if they are in "src" folder. Try using

this.configuration.addResource("Comment.hbm.xml");   

Cheers,
Naren

[Frank Serkland]

Naren Chivukula wrote:

this.configuration.addResource("/src/Comment.hbm.xml");

Resources have to be accessed from the application classpath if they are in "src" folder. Try using

this.configuration.addResource("Comment.hbm.xml");   

Cheers,
Naren

I tried your change, Naren, and I got this error.

org.hibernate.MappingException: Resource: model/Comment.hbm.xml not found

I then moved the xml files to the model package, without changing the code. I then got this.

org.hibernate.MappingException: Resource: Comment.hbm.xml not found

Any ideas out there?

[Paul Clapham]

Frank Serkland wrote:Paul, I tried your change, and it didn't work. Here is the structure that I found Eclipse deployed to.

Again, irrelevant. Forget about Eclipse for now. You're using a servlet container to run these things, right? And you're deploying your web application into it, right?

(If your answers aren't "Yes" so far then you're doing it wrong.)

Okay. So in that servlet container's directories, after you deploy the web application, you should find a directory for the web app. And under it there should be a WEB-INF directory, and under that a classes directory. If your Hibernate resources aren't in that classes directory then you didn't do the deployment correctly. And if they are, then one of the proposed code fragments should have worked.

[Frank Serkland]

Paul Clapham wrote:Again, irrelevant. Forget about Eclipse for now. You're using a servlet container to run these things, right? And you're deploying your web application into it, right?

(If your answers aren't "Yes" so far then you're doing it wrong.)

Well, I'm running this using Tomcat, but nothing has been copied over to Tomcat's installation. It's always just run from my project directory, so I guess I'm doing something wrong. I've got a WebContent folder with my JSPs and a WEB-INF. The WEB-INF has the web.xml, hibernate.cfg.xml, a few tlds and the lib folder. Something's crazy here, I know. Any ideas, anybody?

[Frank Serkland]

Frank Serkland wrote:Well, I'm running this using Tomcat, but nothing has been copied over to Tomcat's installation. It's always just run from my project directory, so I guess I'm doing something wrong. I've got a WebContent folder with my JSPs and a WEB-INF. The WEB-INF has the web.xml, hibernate.cfg.xml, a few tlds and the lib folder. Something's crazy here, I know. Any ideas, anybody?

I've moved compiled classes into /WEB-INF/classes (they now reside in their respective packages under that) and the Hibernate files reside directly in /WEB-INF/classes. I am getting this message in addition to the previous message. What am I doing wrong?

SEVERE: Error configuring application listener of class configuration.ConfigurationListener
java.lang.ClassNotFoundException: configuration.ConfigurationListener

[Frank Serkland]

Okay, let's try this question. What is the correct deployment process?

[Paul Clapham]

Frank Serkland wrote:Okay, let's try this question. What is the correct deployment process?

And that question is not about Object Relational Mapping (although to be frank, neither was the original question). It's a question about Eclipse, so it would get better coverage in the forum about Eclipse. So let's zap it over there and see what people have to say...

[Frank Serkland]

If it helps, I am using Eclipse Galileo.

[Frank Serkland]

Forget it, everyone. I'll just figure it out myself.

[Frank Serkland]

Frank Serkland wrote:Forget it, everyone. I'll just figure it out myself.

This problem was resolved when I removed the files from my listener files. They were already specified in hibernate.cfg.xml, so they didn't need to be repeated in the listener class.