NPE Exception

Hello,

I work for Software AG Spain, I have been stuck with an untractable NullPointerException for over a week and I would be immensely grateful for some help.

My environment is as follows:
-JDK 1.4.2
-Jakarta Tomcat 5.0.19
-Java Server Faces 1.0
-Tamino 4.1.4.1

I have a com.softwareag.tamino.db.api.response.TResponse object in my code that gives me this NullPointerException. I know for a fact that the object itself is not null (that would be too easy) as I have a test (assert response!= null;) that proves that. Rather it must be one of the variables of that object that is null and I can’t pinpoint which.

This behavior happens only once in two times.

I have included with this post the sources for my project (I have replaced the jars with empty files).

Here is the exception printed on the console:

Apr 20, 2004 1:47:05 PM com.sun.faces.lifecycle.InvokeApplicationPhase execute
SEVERE: #{OPCAdvancedQueryManagedBean.beanAction}: javax.faces.el.EvaluationException: java.lang.NullPointerException
javax.faces.FacesException: #{OPCAdvancedQueryManagedBean.beanAction}: javax.faces.el.EvaluationException: java.lang.Nul
lPointerException
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:78)
at javax.faces.component.UICommand.broadcast(UICommand.java:312)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:266)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:380)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:257)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:245)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:199)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:509)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:184)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:164)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:567)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:972)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:206)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:833)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)
at java.lang.Thread.run(Thread.java:536)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:130)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
… 33 more
Caused by: java.lang.NullPointerException
at com.sun.faces.context.SessionMap.put(ExternalContextImpl.java:555)
at com.softwareag.estela.opc.util.OPCSessionUtil.putTResponseIntoSession(OPCSessionUtil.java:36)
at com.softwareag.estela.opc.engine.OPCSearch.execute(OPCSearch.java:42)
at com.softwareag.estela.opc.jsf.OPCAbstractQueryManagedBean.beanAction(OPCAbstractQueryManagedBean.java:73)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
… 34 more


Here is the exception that gets printed in the browser:

HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: #{OPCAdvancedQueryManagedBean.beanAction}: javax.faces.el.EvaluationException: java.lang.NullPointerException
javax.faces.webapp.FacesServlet.service(FacesServlet.java:209)
root cause
javax.faces.FacesException: #{OPCAdvancedQueryManagedBean.beanAction}: javax.faces.el.EvaluationException: java.lang.NullPointerException
com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:78)
javax.faces.component.UICommand.broadcast(UICommand.java:312)
javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:266)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:380)
com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)


Thanks in advance,

Julien Martin.
opac.zip (21 KB)