javax.ejb.EJBException in ejbSelect, embedded exception is n

[rinehart]

Okay. This is the last puzzler of the day for me. Still working on the same test application for ejb's with compound primary keys. I'm getting an EJBException on my ejbSelect method. I've reviewed the server.log file, this EJB QL appears to be well formed, it's getting parsed properly into a well formed SQL statement. It's getting passed parameters for a known entity. But it's not executing properly for some reason. The client console output follows. I've attached the server.log and default.script.

Oh, and the build, its a build as of 3/10/2002 sometime this afternoon Pacific-Tijuana I wish I was there time. :)


client console output:

Getting initial context.

Context retrieved.Getting ejb/PrimitiveLongEJB.
Creating PrimativeLongRemote object.
PrimitiveLongRemote created.
Getting ejb/ObjLongEJB.
Creating ObjLongRemote object.
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.ServerException: Error in ejbSelectPrimitiveLongLocal
Embedded Exception
null; nested exception is:
javax.ejb.EJBException: Error in ejbSelectPrimitiveLongLocal
Embedded Exception
null
java.rmi.ServerException: Error in ejbSelectPrimitiveLongLocal
Embedded Exception
null; nested exception is:
javax.ejb.EJBException: Error in ejbSelectPrimitiveLongLocal
Embedded Exception
null
javax.ejb.EJBException: Error in ejbSelectPrimitiveLongLocal
Embedded Exception
null
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:245)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:220)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:122)
at org.jboss.invocation.jrmp.server.JRMPInvoker_Stub.invoke(Unknown Source)
at org.jboss.invocation.jrmp.interfaces.JRMPInvokerProxy.invoke(JRMPInvokerProxy.java:128)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.java:108)
at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.java:73)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:76)
at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:185)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:96)
at $Proxy2.create(Unknown Source)
at com.sextanttech.client.Client.main(Client.java:43)
java.lang.NullPointerException
<<no stack trace available>>

[rinehart]

and the files...

[rinehart]

Oh, oh death,
Oh, Oh death,
Won't you spare my over for another year...

I'm diein' here! I'm lookin' for a white knight. Pretty please... :(

[rinehart]

I deserve death by firing squad. Someone please, just shoot me now because I'm too stupid to live! :)

Problem resolved...

[pazu]

Please post your solution here. It may be useful for someone else having similar problems.

[rinehart]

It's really not much of a discovery. When I was working on another issue I set my ejb variables in the client application to null. Then I forgot to remove those lines of code and attempted to invoke a method. Basic lifecycle issue. If you variables are nullified, then you can perform operations on the remote entity. :)

- Mac

[dsundstrom]

Can you be more specific? It sounds like I need to throw a better error message.

[rinehart]

Here's some psudocode that illustrates the problem:

EntityHome home = (EntityHome)context.lookup("ejb/entityEJB");
EntityLocal local = home.create();
//.. blah, blah, blah
local = null; // nullifying local reference
//... blah, blah, blah
local.invokeSomeMethod(); //boom -- NullPointerException

[dsundstrom]

Ok, nothing I can do here. I thought you were getting a null pointer exception from inside the container.