Undeployment order WAR/EJB

[alexander.eckert]

Hi,

when shutting down JBoss 5.1.0.GA I'll get an NPE because the destroy method of a servlet tries to call a local EJB which is already undeployd. There are no problems when using JBoss 4.2.2.GA. I build a small ear reducing it to a minimal application.

I have the EJB:

{code}package helloworld.server;

import javax.ejb.SessionBean;

/**
 * @ejb.bean 
 *         name="hw/ResourceBean" 
 *         type="Stateless" 
 *         view-type="local"
 *      local-jndi-name="hw/ResourceBeanLocal"
 *      
 */
public abstract class ResourceBean implements SessionBean {
    
   /**
    * @ejb.interface-method
    */
    public void startUp() {
        System.out.println(">> start up");
    }
    
    /**
     * @ejb.interface-method
     */
    public void shutDown() {
        System.out.println(">> shut down");
    }
}{code}

And the Servlet

{code}

import helloworld.common.ResourceBeanUtil;

import javax.servlet.http.HttpServlet;

/**
 * @web.servlet 
 *        name="HelloServlet"
 *        load-on-startup="1"
 *
 * @web.servlet.mapping 
 *         url-pattern="/hello-web/HelloServlet"
 *
 * @web.ejb-local-ref 
 *        name ="ejb/hw/ResourceBeanLocal"
 *      type="Session"
 *      home="helloworld.common.ResourceBeanLocalHome"
 *      local="helloworld.common.ResourceBeanLocal"
 *      link="hello.jar#hw/ResourceBean"
 *
 */
public class HelloServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    public void init() {
        try {
            ResourceBeanUtil.getLocalHome().create().startUp();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    public void destroy() {
        try {
            ResourceBeanUtil.getLocalHome().create().shutDown();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
{code}

The EAR contains hello.jar (holding the EJB) and hello.war (holding the servlet). I used the default server as base and changed java2ClassLoadingCompliance to true an commented out the WarClassLoaderDeployer bean in deployers\jbossweb.deployer\META-INF\war-deployers-jboss-beans.xml.

I added a jboss-dependency.xml in WEB-INF of the war file with a reference to jndi:hw/ResourceBeanLocal. But it had no effect. Deployment order is still fine but the EJB is still undeployed before the servlet.

Hope you can help

[meme]

Hi Alexander,

if you'd like to undeploy in the correct order, you should define the dependencies as you've got tried. But replace the jboss-dependency.xml with

the jboss-web.xml (in the war) with the dependency:

<jboss-web>
    <depends>[objectname of the bean]</depends>
</jboss-web>

Then it should be deployed in the correct order and it's also undeployed in the correct order.

Marc

[alexander.eckert]

Thank you, this solved my problem.

Alex