6 Replies Latest reply on Feb 13, 2010 10:46 AM by raphaufrj

Drools java.lang.NullPointerException at org.drools.common.AbstractWorkingMemory.addHandleToMaps(AbstractWorkingMemory.java:1067)

stressede Jul 22, 2009 2:49 PM

L.S.

I am currently working on a project with the following stack:
Tomcat 6, Seam 2.1.2, Drools 4.0.7

Every now and then we get a NullPointerException, but the Exception is hard to reproduce.
Just recently we found one possible pattern for reproducing the Exception:

1. log in
2. click on a link
2. restart the server
3. refresh the page
4. automatic redirect to login (appends cid to url)
5. restart the server
6. click login, crash

The crash happens under other circumstances as well, but we can only reliably reproduce this scenario.
If we replace the URL with the base URL the application becomes unworkable due to similar crashes.
The only solution is to logout or restart the server.
When clicking on logout, Seam shows an empty debug page (no stack trace).
After this, we can return to the base URL, log in and the application works again.

Does anybody have any ideas on a possible solution for this problem?

stack trace:

SEVERE: java.lang.NullPointerException
javax.faces.el.EvaluationException: java.lang.NullPointerException
     at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
     at javax.faces.component.UICommand.broadcast(UICommand.java:387)
     at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
     at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:296)
     at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:253)
     at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:466)
     at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
     at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
     at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
     at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
     at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
     at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
     at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
     at org.drools.common.AbstractWorkingMemory.addHandleToMaps(AbstractWorkingMemory.java:1067)
     at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:786)
     at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:684)
     at org.jboss.seam.security.permission.RuleBasedPermissionResolver.setUserAccountInSecurityContext(RuleBasedPermissionResolver.java:318)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
     at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:144)
     at org.jboss.seam.Component.callComponentMethod(Component.java:2249)
     at org.jboss.seam.core.Events.raiseEvent(Events.java:85)
     at org.jboss.seam.security.Identity.postAuthenticate(Identity.java:397)
     at org.jboss.seam.security.Identity.authenticate(Identity.java:345)
     at org.jboss.seam.security.Identity.authenticate(Identity.java:332)
     at org.jboss.seam.security.Identity.login(Identity.java:259)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:335)
     at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:348)
     at org.jboss.el.parser.AstPropertySuffix.invoke(AstPropertySuffix.java:58)
     at org.jboss.el.parser.AstValue.invoke(AstValue.java:96)
     at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
     at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
     at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
     ... 45 more
Jul 22, 2009 2:08:05 PM com.sun.faces.lifecycle.InvokeApplicationPhase execute
WARNING: #{identity.login}: java.lang.NullPointerException
javax.faces.FacesException: #{identity.login}: java.lang.NullPointerException
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
     at javax.faces.component.UICommand.broadcast(UICommand.java:387)
     at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:321)
     at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:296)
     at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:253)
     at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:466)
     at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82)
     at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
     at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
     at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
     at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368)
     at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495)
     at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
     at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
     at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Unknown Source)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
     at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
     ... 44 more
Caused by: java.lang.NullPointerException
     at org.drools.common.AbstractWorkingMemory.addHandleToMaps(AbstractWorkingMemory.java:1067)
     at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:786)
     at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:684)
     at org.jboss.seam.security.permission.RuleBasedPermissionResolver.setUserAccountInSecurityContext(RuleBasedPermissionResolver.java:318)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
     at org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:144)
     at org.jboss.seam.Component.callComponentMethod(Component.java:2249)
     at org.jboss.seam.core.Events.raiseEvent(Events.java:85)
     at org.jboss.seam.security.Identity.postAuthenticate(Identity.java:397)
     at org.jboss.seam.security.Identity.authenticate(Identity.java:345)
     at org.jboss.seam.security.Identity.authenticate(Identity.java:332)
     at org.jboss.seam.security.Identity.login(Identity.java:259)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:335)
     at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:348)
     at org.jboss.el.parser.AstPropertySuffix.invoke(AstPropertySuffix.java:58)
     at org.jboss.el.parser.AstValue.invoke(AstValue.java:96)
     at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
     at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
     at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
     ... 45 more

1. Re: Drools java.lang.NullPointerException at org.drools.common.AbstractWorkingMemory.addHandleToMaps(AbstractWorkingMemory.java:1067)

odomitchi Aug 26, 2009 11:03 PM (in response to stressede)

I am experiencing the same issue. Have you figured out how to solve this? That would be very helpful. Thanks
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2. Re: Drools java.lang.NullPointerException at org.drools.common.AbstractWorkingMemory.addHandleToMaps(AbstractWorkingMemory.java:1067)

raphaufrj Feb 9, 2010 2:29 AM (in response to stressede)

Hello guys... I am getting the same problem. what is the solution?
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3. Re: Drools java.lang.NullPointerException at org.drools.common.AbstractWorkingMemory.addHandleToMaps(AbstractWorkingMemory.java:1067)

babazs Feb 10, 2010 10:41 AM (in response to stressede)

also I have the same issue.
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4. Re: Drools java.lang.NullPointerException at org.drools.common.AbstractWorkingMemory.addHandleToMaps(AbstractWorkingMemory.java:1067)

raphaufrj Feb 12, 2010 7:46 PM (in response to stressede)

what' s the seam version do you use? i'm with 2.1... Maybe , i 'll make a upgrade could be resolved the issue...
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5. Re: Drools java.lang.NullPointerException at org.drools.common.AbstractWorkingMemory.addHandleToMaps(AbstractWorkingMemory.java:1067)

sage.sam Feb 12, 2010 10:23 PM (in response to stressede)

Have you tried adding an exception handler and page direction for NullPointerException?

You could have the error page end the conversation and perhaps even end the session. This should allow the login page to function normally (hopefully).

I admit this is a bit of a shot in the dark, but maybe it will allow your users to at least continue to function in a more clean manner.
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6. Re: Drools java.lang.NullPointerException at org.drools.common.AbstractWorkingMemory.addHandleToMaps(AbstractWorkingMemory.java:1067)

raphaufrj Feb 13, 2010 10:46 AM (in response to stressede)

Hello David,

Actually, in my case, NPE fall in an unexpected exception and i finish the conversation and redirect for the page error (it equals a seam-gen generated).

Although, that's not solve my problem... Users don't like to see page error :P

Regards,
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