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From Russell E Glaue <rgl...@cait.org>
Subject Extending DeltaManager in GBean - NoClassDefFoundError: javax/servlet/http/HttpSession
Date Fri, 21 Jul 2006 16:37:30 GMT
Okay.
Thanks to Jason, I got the hostinfoGBean deployed successfully.

now the next error...
I also want to report in the hostinfoGBean how many sessions are on a node in 
the cluster.
So I edited my hostinfoGBean class to extend DeltaManager and then added a 
function getSessionCount.

It compiles successfully.
And it deploys in Geronimo 1.1, although with an error on deployment:

deploy.sh deploy target/wnode-1.0.jar wnode-plan.xml
-
Exception in thread "Thread-4" java.lang.NoClassDefFoundError: 
javax/servlet/http/HttpSession
         at java.lang.ClassLoader.defineClass1(Native Method)
         at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
         at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
         at 
org.apache.geronimo.kernel.classloader.JarFileClassLoader.access$200(JarFileClassLoader.java:51)
         at 
org.apache.geronimo.kernel.classloader.JarFileClassLoader$6.run(JarFileClassLoader.java:275)
         at java.security.AccessController.doPrivileged(Native Method)
... snip ...
         at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:466)
         at 
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:707)
         at java.lang.Thread.run(Thread.java:595)
-

When deploying a similar GBean that extends DeltaManager in Geronimo 1.0, I did 
not get this error.
Do I have to add another dependency in the deployment plan? I could not find the 
artifact in the geronimo 1.1 repository that contains the javax HttpSession 
class (Did I not look hard enough?). Do I have to deploy a new artifact to 
Geronimo 1.1?

Here is my updated code, the deployment plan has not changed.

java file: org/cait/wnode/hostinfoGBean.java
-
package org.cait.wnode;

import java.util.HashMap;
import org.apache.commons.logging.*;

import org.apache.catalina.cluster.session.DeltaManager;
import org.apache.geronimo.gbean.GBeanInfo;
import org.apache.geronimo.gbean.GBeanInfoBuilder;
import org.apache.geronimo.gbean.GBeanLifecycle;

public class hostinfoGBean extends DeltaManager implements GBeanLifecycle {

         public static final GBeanInfo GBEAN_INFO;

         private static final Log glog = LogFactory.getLog(hostinfoGBean.class);

         public static GBeanInfo getGBeanInfo(){
                 return GBEAN_INFO;
         }
         static{
                 GBeanInfoBuilder infoBuilder = new 
GBeanInfoBuilder("hostinfoGBean",hostinfoGBean.class);
                 infoBuilder.addInterface(hostinfoGBean.class);
                 GBEAN_INFO = infoBuilder.getBeanInfo();
         }

         public void doFail() {
                 glog.info("Service failed");
                 // TODO Auto-generated method stub
         }

         public void doStart() throws Exception {
                 glog.info("Service started");
                 // TODO Auto-generated method stub
         }

         public void doStop() throws Exception {
                 glog.info("Service stopped");
                 // TODO Auto-generated method stub
         }

         public String getName() {
                 return "node1.domain-noc1.test.com";
         }
         public String getPort() {
                 return "80";
         }
         public int getSessionCount() {
                 HashMap SessionHashMap = this.sessions;
                 int NumberOfSessions = 0;
                 NumberOfSessions = SessionHashMap.size();
                 return NumberOfSessions;
         }

}
-

deployment plan: wnode-plan.xml
-
<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="http://geronimo.apache.org/xml/ns/deployment-1.1">
   <environment>
     <moduleId>
       <groupId>wnode</groupId>
       <artifactId>wnode</artifactId>
       <version>1.0</version>
       <type>jar</type>
     </moduleId>
     <dependencies>
       <dependency>
         <groupId>tomcat</groupId>
         <artifactId>catalina-cluster</artifactId>
         <version>5.5.15</version>
         <type>jar</type>
       </dependency>
       <dependency>
         <groupId>tomcat</groupId>
         <artifactId>catalina</artifactId>
         <version>5.5.15</version>
         <type>jar</type>
       </dependency>
     </dependencies>
   </environment>
   <gbean name='hostinfoGBean' class='org.cait.wnode.hostinfoGBean'></gbean>
</module>
-



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