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

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

    Erik L Newbie


      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