NullpointerException in JspStateManager
---------------------------------------

         Key: MYFACES-1296
         URL: http://issues.apache.org/jira/browse/MYFACES-1296
     Project: MyFaces Core
        Type: Bug

  Components: General  
    Versions: 1.1.2    
 Environment: JBoss 4.0.1, Tomcat 5

    Reporter: Stephan Sichhart
    Priority: Critical
     Fix For: 1.1.3-SNAPSHOT, 1.1.4-SNAPSHOT


Hi,

I'm having trouble using the 1.1.2 release and latest nightly build. If I do 
some massive clicking with the sample application, I get after 30-50 clicks an 
NPE within the JspStateManager. In my own app. I get this error after 10 page 
request.

This problem only occurs, if I use server state saving. I figured out, that if 
I increase the org.apache.myfaces.NUMBER_OF_VIEWS_IN_SESSION parameter to a 
large (500) value, the error does not occur or does not occur yet :-)

I can reproduce this error every time. There is an resolved issue on jira 
(http://issues.apache.org/jira/browse/MYFACES-1278), which explains exactly my 
problem. This issue was closed. After discussing the problem with Juergen 
Melzer, he confirmed that the problem is still there. 

regards,
Stephan


java.lang.NullPointerException: null values not allowed
   at 
org.apache.commons.collections.map.AbstractReferenceMap.put(AbstractReferenceMap.java:251)
   at 
org.apache.myfaces.application.jsp.JspStateManagerImpl$SerializedViewCollection.add(JspStateManagerImpl.java:717)
   at 
org.apache.myfaces.application.jsp.JspStateManagerImpl.saveSerializedViewInServletSession(JspStateManagerImpl.java:493)
   at 
org.apache.myfaces.application.jsp.JspStateManagerImpl.saveSerializedView(JspStateManagerImpl.java:332)
   at org.apache.myfaces.taglib.core.ViewTag.doAfterBody(ViewTag.java:122)
   at org.apache.jsp.home_jsp._jspx_meth_f_view_0(home_jsp.java:153)
   at org.apache.jsp.home_jsp._jspService(home_jsp.java:102)
   at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
   at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
   at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
   at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
   at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
   at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
   at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704)
   at 
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:474)
   at 
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:409)
   at 
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
   at 
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:416)
   at 
org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
   at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:367)
   at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
   at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
   at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
   at 
org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:144)
   at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
   at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
   at 
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
   at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
   at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
   at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
   at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
   at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
   at 
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
   at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
   at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
   at 
org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:66)
   at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
   at 
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:153)
   at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
   at 
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:54)
   at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
   at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
   at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
   at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
   at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
   at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
   at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
   at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
   at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
   at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
   at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
   at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
   at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
   at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
   at java.lang.Thread.run(Thread.java:534)


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