StatelessSessionContainer invoke returned an exception

[jbossid]

Hi there,
iam using jboss3alpha,when iam looking another BMP from a stateless session bean it is giving me this error.

"StatelessSessionContainer invoke returned an exception"
java.rmi.serverException :null

please give me any suggestion how can i getride of this

[jbossid]

please somebody respond imm.. thsi is very urgent

[adrian.brock]

Do you see any errors in log/server.log?
I think nobody is responding because the error you
report is too general.

Regards,
Adrian

[jbossid]

Adrian,
here is my logfile,could u please give some suggestion

TxManager,DEBUG] resumed tx: null
[2002-03-13 14:21:35,078,Default,INFO] Exception in exception handlingjavax.ejb.EJBException: null
Embedded Exception
null
[2002-03-13 14:21:35,078,StatelessSessionContainer,ERROR] invoke returned an exception
java.rmi.ServerException: null
Embedded Exception
null; nested exception is:
javax.ejb.EJBException: null
Embedded Exception
null
javax.ejb.EJBException: null
Embedded Exception
null
at com.textmine.ejb.UserManagerBean.validateUser(UserManagerBean.java:83)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:569)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:98)
at org.jboss.ejb.plugins.AbstractTxInterceptorBMT.invokeNext(AbstractTxInterceptorBMT.java:143)
at org.jboss.ejb.plugins.TxInterceptorBMT.invoke(TxInterceptorBMT.java:62)
at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:67)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:131)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:166)
at org.jboss.ejb.StatelessSessionContainer.invoke(StatelessSessionContainer.java:280)
at org.jboss.ejb.Container.invoke(Container.java:528)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invoke(JRMPContainerInvoker.java:411)
at java.lang.reflect.Method.invoke(Native Method)
at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
at com.textmine.ejb.UserManagerBean.validateUser(UserManagerBean.java:76)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:569)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:98)
at org.jboss.ejb.plugins.AbstractTxInterceptorBMT.invokeNext(AbstractTxInterceptorBMT.java:143)
at org.jboss.ejb.plugins.TxInterceptorBMT.invoke(TxInterceptorBMT.java:62)
at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:67)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:131)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:166)
at org.jboss.ejb.StatelessSessionContainer.invoke(StatelessSessionContainer.java:280)
at org.jboss.ejb.Container.invoke(Container.java:528)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at org.jboss.ejb.plugins.jrmp.server.JRMPContainerInvoker.invoke(JRMPContainerInvoker.java:411)
at java.lang.reflect.Method.invoke(Native Method)
at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

[adrian.brock]

It looks like you've got a NullPointerException
somewhere in validateUser().

Regards,
Adrian

[jbossid]

adrian,
the problem is coming when iam looking for BMPlocalhome from a statelesssession bean.

so the exceptions are generated from the catch method for the try where iam looking my bMP home.
they are not from my validateUser() method.

well i read some where from forum that container is looking runtime exception as EJBException thats why it is showing statelesscontainer invoke return exception.
but how can i solve this??
i think it is the error while looking the LocalHome.

[adrian.brock]

Can you post the code and deployment descriptors?
You don't need to post everything, just the relevant
sections.

Regards,
Adrian

[jbossid]

here is my ejb-jar.xml
<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar>
<enterprise-beans>

<ejb-name>UserManagerBean</ejb-name>
com.xx.ejb.UserManagerHome
com.xx.ejb.UserManager
<ejb-class>com.xx.ejb.UserManagerBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Bean</transaction-type>



<ejb-name>CustomerBean</ejb-name>
com.xx.ejb.CustomerHome
com.xx.ejb.Customer
<ejb-class>com.xx.ejb.CustomerBean</ejb-class>
<prim-key-class>com.xx.ejb.CustomerPK</prim-key-class>
<persistence-type>Bean</persistence-type>
false


</enterprise-beans>
</ejb-jar>


and my jboss.xml is
<?xml version="1.0" encoding="UTF-8"?>

<enterprise-beans>


<ejb-name>UserManagerBean</ejb-name>
<jndi-name>usermgr/UserMgr</jndi-name>



<ejb-name>CustomerBean</ejb-name>
<jndi-name>customer/CustBean</jndi-name>


</enterprise-beans>



and my code is :
try{

Context ctx = new InitialContext();
Object ref=ctx.lookup("customer/CustBean");

CustomerLocalHome customerLocalHome = (CustomerLocalHome)PortableRemoteObject.narrow(ref,CustomerLocalHome.class);

CustomerLocal customer=null;
CustomerPK pk=(CustomerPK) customer.getPrimaryKey();
customer=customerLocalHome.findByPrimaryKey(pk);

return new User(customer.getUserId(),customer.getPassword(),customer.getFname(),customer.getLname(),customer.getPassword());

}

catch(Exception e){
throw new EJBException(e);
}

[adrian.brock]

Hi,

Your immediate problem is setting customer to null
before using it.

Also, you haven't specified a <local-jndi-name> in
jboss.xml

I think it defaults to local/<ejb-name> when you
don't specify it?

Regards,
Adrian

[jbossid]

adrian ,
i changed the code as u said ,i am not making my customer as null.but again it is giving me problem
if you have any ejb-jar.xml and jboss.xml syntax please do post.
i don't think it is the problem with making the local as null.there iam just declaring it and initialinzing it.

[adrian.brock]

If you look at the other post
http://main.jboss.org/thread.jsp?forum=47&thread=10656

That has a session bean with a local interface.

In general local interfaces aren't really required in
JBoss unless you turn set to False in
standardjboss.xml. JBoss automatically does local
processing for you.

Regards,
Adrian