EJBException during Session.valueUnbound() with JBoss-2.4.4/

[rakhbari]

I have a perfectly working webapp using JBoss-2.4.0/Tomcat-3.2.3 with static files being served with Apache 1.3.22 using mod_jk. I decided to download the latest 2.4.4/Jetty-3.1.3 bundle and see what it takes to switch the app to Jetty from the Tomcat/Apache combo.

I muddled thru the JBoss & Jetty config files (jetty.xml) and got my JAR file deployed and brought up JBoss/Jetty to the point where there are no error messages at startup. The app works fine for the most part as well, EXCEPT when a user goes to log off.

When a user logs on I create an instance of an EntityBean called SessionRecord. I then setup a HttpSessionListener and implement its unbound event so that when the user logs off and the session is invalidated it simply looks up this same instance and deletes it (ejbRemove) from the DB. MIND YOU... this is working perfectly fine in JBoss-2.4.0.

But in JBoss-2.4.4 when the user logs off I get the following exception:

[INFO,Default] **E** [2002-01-11 12:21:12.524 PST] [SocketListener-2] [ApliaSess
ion.java:306]
[INFO,Default] Session.valueUnbound(): Error deleting session record.
[INFO,Default] javax.transaction.TransactionRolledbackException: null
Embedded Exception
com.aplia.platform.site.SessionRecord$Key; nested exception is:
javax.ejb.EJBException: null
Embedded Exception
com.aplia.platform.site.SessionRecord$Key
[INFO,Default] javax.ejb.EJBException: null
Embedded Exception
com.aplia.platform.site.SessionRecord$Key
[INFO,Default] at org.jboss.ejb.plugins.BMPPersistenceManager.loadEntity(BMPPer
sistenceManager.java:345)
[INFO,Default] at org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invoke
(EntitySynchronizationInterceptor.java:287)
[INFO,Default] at org.jboss.ejb.plugins.EntityInstanceInterceptor.invoke(Entity
InstanceInterceptor.java:197)
[INFO,Default] at org.jboss.ejb.plugins.EntityLockInterceptor.invoke(EntityLock
Interceptor.java:125)
[INFO,Default] at org.jboss.ejb.plugins.TxInterceptorCMT.invokeNext(TxIntercept
orCMT.java:138)
[INFO,Default] at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(Tx
InterceptorCMT.java:347)
[INFO,Default] at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCM
T.java:100)
[INFO,Default] at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInte
rceptor.java:127)
[INFO,Default] at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.ja
va:170)
[INFO,Default] at org.jboss.ejb.EntityContainer.invoke(EntityContainer.java:428
)
[INFO,Default] at org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invoke
(JRMPContainerInvoker.java:504)
[INFO,Default] at org.jboss.ejb.plugins.jrmp.interfaces.GenericProxy.invokeCont
ainer(GenericProxy.java:335)
[INFO,Default] at org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy.invoke(HomePr
oxy.java:177)
[INFO,Default] at $Proxy37.remove(Unknown Source)
[INFO,Default] at com.aplia.platform.site.SessionRecord.remove(SessionRecord.ja
va:306)
[INFO,Default] at com.aplia.platform.ApliaSession$SessionListener.valueUnbound(
ApliaSession.java:303)
[INFO,Default] at org.mortbay.jetty.servlet.Context$Session.unbindValue(Context
.java:828)
[INFO,Default] at org.mortbay.jetty.servlet.Context$Session.invalidate(Context.
java:714)
[INFO,Default] at com.aplia.platform.ApliaSession.invalidate(ApliaSession.java:
246)
[INFO,Default] at com.aplia.platform.LogoffServlet.doGet(LogoffServlet.java:31)

[INFO,Default] at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
[INFO,Default] at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
[INFO,Default] at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.
java:488)
[INFO,Default] at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandle
r.java:403)
[INFO,Default] at org.mortbay.http.HandlerContext.handle(HandlerContext.java:10
37)
[INFO,Default] at org.mortbay.http.HandlerContext.handle(HandlerContext.java:99
2)
[INFO,Default] at org.mortbay.http.HttpServer.service(HttpServer.java:699)
[INFO,Default] at org.mortbay.http.HttpConnection.service(HttpConnection.java:7
45)
[INFO,Default] at org.mortbay.http.HttpConnection.handleNext(HttpConnection.jav
a:918)
[INFO,Default] at org.mortbay.http.HttpConnection.handle(HttpConnection.java:76
0)
[INFO,Default] at org.mortbay.http.SocketListener.handleConnection(SocketListen
er.java:148)
[INFO,Default] at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:28
7)
[INFO,Default] at org.mortbay.util.ThreadPool$JobRunner.run(ThreadPool.java:716
)
[INFO,Default] at java.lang.Thread.run(Unknown Source)
[INFO,Default] java.lang.ClassCastException: com.aplia.platform.site.SessionReco
rd$Key
[INFO,Default] at com.aplia.platform.site.SessionRecord$Bean.ejbLoad(SessionRec
ord.java:538)
[INFO,Default] at java.lang.reflect.Method.invoke(Native Method)
[INFO,Default] at org.jboss.ejb.plugins.BMPPersistenceManager.loadEntity(BMPPer
sistenceManager.java:324)
[INFO,Default] at org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invoke
(EntitySynchronizationInterceptor.java:287)
[INFO,Default] at org.jboss.ejb.plugins.EntityInstanceInterceptor.invoke(Entity
InstanceInterceptor.java:197)
[INFO,Default] at org.jboss.ejb.plugins.EntityLockInterceptor.invoke(EntityLock
Interceptor.java:125)
[INFO,Default] at org.jboss.ejb.plugins.TxInterceptorCMT.invokeNext(TxIntercept
orCMT.java:138)
[INFO,Default] at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(Tx
InterceptorCMT.java:347)
[INFO,Default] at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCM
T.java:100)
[INFO,Default] at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInte
rceptor.java:127)
[INFO,Default] at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.ja
va:170)
[INFO,Default] at org.jboss.ejb.EntityContainer.invoke(EntityContainer.java:428
)
[INFO,Default] at org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invoke
(JRMPContainerInvoker.java:504)
[INFO,Default] at org.jboss.ejb.plugins.jrmp.interfaces.GenericProxy.invokeCont
ainer(GenericProxy.java:335)
[INFO,Default] at org.jboss.ejb.plugins.jrmp.interfaces.HomeProxy.invoke(HomePr
oxy.java:177)
[INFO,Default] at $Proxy37.remove(Unknown Source)
[INFO,Default] at com.aplia.platform.site.SessionRecord.remove(SessionRecord.ja
va:306)
[INFO,Default] at com.aplia.platform.ApliaSession$SessionListener.valueUnbound(
ApliaSession.java:303)
[INFO,Default] at org.mortbay.jetty.servlet.Context$Session.unbindValue(Context
.java:828)
[INFO,Default] at org.mortbay.jetty.servlet.Context$Session.invalidate(Context.
java:714)
[INFO,Default] at com.aplia.platform.ApliaSession.invalidate(ApliaSession.java:
246)
[INFO,Default] at com.aplia.platform.LogoffServlet.doGet(LogoffServlet.java:31)

[INFO,Default] at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
[INFO,Default] at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
[INFO,Default] at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.
java:488)
[INFO,Default] at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandle
r.java:403)
[INFO,Default] at org.mortbay.http.HandlerContext.handle(HandlerContext.java:10
37)
[INFO,Default] at org.mortbay.http.HandlerContext.handle(HandlerContext.java:99
2)
[INFO,Default] at org.mortbay.http.HttpServer.service(HttpServer.java:699)
[INFO,Default] at org.mortbay.http.HttpConnection.service(HttpConnection.java:7
45)
[INFO,Default] at org.mortbay.http.HttpConnection.handleNext(HttpConnection.jav
a:918)
[INFO,Default] at org.mortbay.http.HttpConnection.handle(HttpConnection.java:76
0)
[INFO,Default] at org.mortbay.http.SocketListener.handleConnection(SocketListen
er.java:148)
[INFO,Default] at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:28
7)
[INFO,Default] at org.mortbay.util.ThreadPool$JobRunner.run(ThreadPool.java:716
)
[INFO,Default] at java.lang.Thread.run(Unknown Source)
[INFO,Default] com.aplia.platform.ApliaException: javax.transaction.TransactionR
olledbackException: null
Embedded Exception
com.aplia.platform.site.SessionRecord$Key; nested exception is:
javax.ejb.EJBException: null
Embedded Exception
com.aplia.platform.site.SessionRecord$Key [nested: javax.transaction.Transaction
RolledbackException: null
Embedded Exception
com.aplia.platform.site.SessionRecord$Key; nested exception is:
javax.ejb.EJBException: null
Embedded Exception
com.aplia.platform.site.SessionRecord$Key]
[INFO,Default] at com.aplia.platform.site.SessionRecord.remove(SessionRecord.ja
va:309)
[INFO,Default] at com.aplia.platform.ApliaSession$SessionListener.valueUnbound(
ApliaSession.java:303)
[INFO,Default] at org.mortbay.jetty.servlet.Context$Session.unbindValue(Context
.java:828)
[INFO,Default] at org.mortbay.jetty.servlet.Context$Session.invalidate(Context.
java:714)
[INFO,Default] at com.aplia.platform.ApliaSession.invalidate(ApliaSession.java:
246)
[INFO,Default] at com.aplia.platform.LogoffServlet.doGet(LogoffServlet.java:31)

[INFO,Default] at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
[INFO,Default] at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
[INFO,Default] at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.
java:488)
[INFO,Default] at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandle
r.java:403)
[INFO,Default] at org.mortbay.http.HandlerContext.handle(HandlerContext.java:10
37)
[INFO,Default] at org.mortbay.http.HandlerContext.handle(HandlerContext.java:99
2)
[INFO,Default] at org.mortbay.http.HttpServer.service(HttpServer.java:699)
[INFO,Default] at org.mortbay.http.HttpConnection.service(HttpConnection.java:7
45)
[INFO,Default] at org.mortbay.http.HttpConnection.handleNext(HttpConnection.jav
a:918)
[INFO,Default] at org.mortbay.http.HttpConnection.handle(HttpConnection.java:76
0)
[INFO,Default] at org.mortbay.http.SocketListener.handleConnection(SocketListen
er.java:148)
[INFO,Default] at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:28
7)
[INFO,Default] at org.mortbay.util.ThreadPool$JobRunner.run(ThreadPool.java:716
)
[INFO,Default] at java.lang.Thread.run(Unknown Source)
[INFO,Default]


Any clues anyone?

It would be much appreciated. Thanks in advance.

Ramin

[rakhbari]

Is anyone going to even attempt to help me out on this? I've had this posted for a while and am in dire need of help with it.

Please, can someone take a look at this?

Thanks in advance,

Ramin

[babar33]

have you found a solution to your problem ?
I have the same one, and I can't fix it

thank you

[oravecz]

What are you doing in ApliaSession.valueUnbound()?


What does the code look like?

[babar33]

It was a null pointer exception in the ejb create due to the use of a file name log.properties in my application (the application tooks the file in /log)

But the error was not very clear (I search a long time before viewing the problem come from ejbCreate())