Null Value Problem

[Murat Hazer <mu...@gmail.com>]

Hi,

   I have an application with following configuration, myfaces 1.1.3,tomahawk
1.1.3,myfa facelets 1.1.11 and ajax4jsf 1.0rc4. I get the following error
randomly, pages work as intended but randomly gives the following error;

08.Ağu.2006 11:27:47 com.sun.facelets.FaceletViewHandlerhandleRenderException
SEVERE: Error Rendering View[/os/lessons/myPage.xhtml]
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 com.sun.facelets.FaceletViewHandler.renderView(
FaceletViewHandler.java :601)
    at org.ajax4jsf.framework.ViewHandlerWrapper.renderView(
ViewHandlerWrapper.java:101)
    at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java
:384)
    at javax.faces.webapp.FacesServlet.service (FacesServlet.java:138)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:252)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java :173)
    at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(
ExtensionsFilter.java:97)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:202)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter (
ApplicationFilterChain.java:173)
    at org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(
BaseXMLFilter.java:65)
    at org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(
BaseFilter.java:225)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:202)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
    at
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(
OpenSessionInViewFilter.java:174)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(
OncePerRequestFilter.java:77)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java :202)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
    at org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(
ExtensionsFilter.java:144)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (
ApplicationFilterChain.java:202)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
    at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(
CharacterEncodingFilter.java :75)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(
OncePerRequestFilter.java:77)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:202)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
    at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(
FilterChainProxy.java:292)
    at org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke (
FilterSecurityInterceptor.java:116)
    at org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(
FilterSecurityInterceptor.java:79)
    at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter (
FilterChainProxy.java:303)
    at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(
ExceptionTranslationFilter.java:143)
    at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(
FilterChainProxy.java :303)
    at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(
AbstractProcessingFilter.java:246)
    at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(
FilterChainProxy.java:303)
    at
org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(
HttpSessionContextIntegrationFilter.java:220)
    at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(
FilterChainProxy.java:303)
    at org.acegisecurity.util.FilterChainProxy.doFilter(
FilterChainProxy.java:173)
    at org.acegisecurity.util.FilterToBeanProxy.doFilter(
FilterToBeanProxy.java:120)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (
ApplicationFilterChain.java:202)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:173)
    at org.apache.catalina.core.StandardWrapperValve.invoke(
StandardWrapperValve.java :213)
    at org.apache.catalina.core.StandardContextValve.invoke(
StandardContextValve.java:178)
    at org.apache.catalina.core.StandardHostValve.invoke(
StandardHostValve.java:126)
    at org.apache.catalina.valves.ErrorReportValve.invoke (
ErrorReportValve.java:105)
    at org.apache.catalina.core.StandardEngineValve.invoke(
StandardEngineValve.java:107)
    at org.apache.catalina.connector.CoyoteAdapter.service(
CoyoteAdapter.java:148)
    at org.apache.coyote.http11.Http11Processor.process (
Http11Processor.java:869)
    at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection
(Http11BaseProtocol.java:664)
    at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(
PoolTcpEndpoint.java :527)
    at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(
LeaderFollowerWorkerThread.java:80)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(
ThreadPool.java:684)
    at java.lang.Thread.run (Thread.java:595)


i couldn't gather additional information, what could be the problem?


regards....


-- 
Murat HAZER
Elektrik-Elektronik Mühendisi - Electrical-Electronics Engineer
Blog URL: http://www.projedunyasi.org