NullPointerException from BaseLocalProxyFactory

jieshengz Mar 3, 2005 12:48 AM

I am calling a stateless EJB from web container. The jboss I used is 3.2.6. Sometime I got this exception

java.lang.NullPointerException
at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:402)
at org.jboss.ejb.plugins.local.StatelessSessionProxy.invoke(StatelessSessionProxy.java:83)
at $Proxy46.getServiceUser(Unknown Source)
....

I had a look at the source code at line 402 the BaseLocalProxyFactory

line 401: ClassLoader oldCl = TCLAction.UTIL.getContextClassLoader();
line 402: boolean setTcl = !oldCl.equals(container.getClassLoader());
line 403: if(setTcl)
line 404: {
line 405:TCLAction.UTIL.setContextClassLoader(container.getClassLoader());

The most likely cause cold be that the oldTCl is a null pointer. Is this a bug in jboss or a misuse of EJB at my side?
Any help is really appreciated,

1. Re: NullPointerException from BaseLocalProxyFactory

jieshengz Mar 3, 2005 11:28 PM (in response to jieshengz)

This problem is resolved. It is that my application does not fully support hot redeployment. I tried to use the hot deployment feature. This could be the cause
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