2 Replies Latest reply on Jul 5, 2006 9:10 PM by andrew.rw.robinson

NullPointerException and No conversation context active

andrew.rw.robinson Jul 5, 2006 3:02 PM

Environment:
Facelets 1.0.14
MyFaces 1.1.4 Snapshot
Seam 1.0.1 GA

Problem:
I have having an exception in the RESTORE VIEW of my page. My page flow is this:
1) User hits a listing page with a data table. User clicks a command link in a row of the table containing a tomahawk updateActionListener.
2) Action is fired that starts a conversation (@Begin) (this never happens because of the error)
3) Navigate to the details page

Here is the exception output:

12:55:43,415 ERROR [PhaseListenerManager] Exception in PhaseListener RESTORE_VIEW(1) afterPhase
java.lang.NullPointerException
 at org.jboss.seam.contexts.PageContext.getAttributeMap(PageContext.java:103)
 at org.jboss.seam.contexts.PageContext.<init>(PageContext.java:40)
 at org.jboss.seam.contexts.Lifecycle.resumePage(Lifecycle.java:323)
 at org.jboss.seam.jsf.AbstractSeamPhaseListener.restoreAnyConversationContext(AbstractSeamPhaseListener.java:39)
 at org.jboss.seam.jsf.SeamPhaseListener.afterPhase(SeamPhaseListener.java:63)
 at org.jboss.seam.jsf.SeamExtendedManagedPersistencePhaseListener.afterPhase(SeamExtendedManagedPersistencePhaseListener.java:55)
 at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:89)
 at org.apache.myfaces.lifecycle.LifecycleImpl.restoreView(LifecycleImpl.java:181)
 at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:66)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
 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:144)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:30)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:45)
 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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:419)
 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.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)
12:55:43,428 DEBUG [DebugPhaseListener] The phase RESTORE_VIEW(1) has completed.
 FacesContext.responseComplete(): false
12:55:43,434 ERROR [PhaseListenerManager] Exception in PhaseListener RESTORE_VIEW(1) afterPhase
java.lang.NullPointerException
 at org.apache.myfaces.renderkit.html.util.AutoScrollPhaseListener.afterPhase(AutoScrollPhaseListener.java:52)
 at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:89)
 at org.apache.myfaces.lifecycle.LifecycleImpl.restoreView(LifecycleImpl.java:181)
 at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:66)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
 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:144)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:30)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:45)
 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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:419)
 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.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)
12:55:43,439 ERROR [SeamExceptionFilter] uncaught exception handled by Seam
javax.servlet.ServletException: No conversation context active
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
 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:144)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:30)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:45)
 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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:419)
 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$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)
12:55:43,443 INFO [SeamExceptionFilter] killing transaction
12:55:43,448 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
java.lang.IllegalStateException: No conversation context active
 at org.jboss.seam.ScopeType.getContext(ScopeType.java:88)
 at org.jboss.seam.Component.newInstance(Component.java:1311)
 at org.jboss.seam.Component.getInstance(Component.java:1263)
 at org.jboss.seam.Component.getInstance(Component.java:1246)
 at org.jboss.seam.jsf.SeamVariableResolver.resolveVariable(SeamVariableResolver.java:44)
 at org.apache.myfaces.config.LastVariableResolverInChain.resolveVariable(LastVariableResolverInChain.java:42)
 at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:134)
 at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:44)
 at com.sun.el.parser.AstValue.getTarget(AstValue.java:41)
 at com.sun.el.parser.AstValue.isReadOnly(AstValue.java:104)
 at com.sun.el.ValueExpressionImpl.isReadOnly(ValueExpressionImpl.java:221)
 at com.sun.facelets.el.TagValueExpression.isReadOnly(TagValueExpression.java:82)
 at com.sun.facelets.el.LegacyValueBinding.isReadOnly(LegacyValueBinding.java:82)
 at org.apache.myfaces.component.html.ext.HtmlDataTable.restoreState(HtmlDataTable.java:597)
 at javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:728)
 at javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:719)
 at javax.faces.component.UIComponentBase.processRestoreState(UIComponentBase.java:719)
 at org.apache.myfaces.application.jsp.JspStateManagerImpl.restoreComponentState(JspStateManagerImpl.java:221)
 at org.apache.myfaces.application.jsp.JspStateManagerImpl.restoreView(JspStateManagerImpl.java:287)
 at org.jboss.seam.jsf.SeamStateManager.restoreView(SeamStateManager.java:41)
 at org.apache.myfaces.application.jsp.JspViewHandlerImpl.restoreView(JspViewHandlerImpl.java:255)
 at org.jboss.seam.jsf.SeamViewHandler.restoreView(SeamViewHandler.java:64)
 at org.jenia.faces.template.handler.ViewHandler.restoreView(ViewHandler.java:263)
 at com.sun.facelets.FaceletViewHandler.restoreView(FaceletViewHandler.java:321)
 at org.apache.myfaces.lifecycle.LifecycleImpl.restoreView(LifecycleImpl.java:141)
 at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:66)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
 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:144)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.servlet.SeamRedirectFilter.doFilter(SeamRedirectFilter.java:30)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.jboss.seam.servlet.SeamExceptionFilter.doFilter(SeamExceptionFilter.java:45)
 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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:524)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:419)
 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.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
 at java.lang.Thread.run(Thread.java:595)

I have other pages/beans that are very similar but do not throw this error. I am not sure what is different about this one.

Any ideas?

Thanks,
Andrew

1. Re: NullPointerException and No conversation context active

andrew.rw.robinson Jul 5, 2006 6:56 PM (in response to andrew.rw.robinson)
Well I just found the problem, but not a solution. The WIKI has the problem described:

http://wiki.jboss.org/wiki/Wiki.jsp?page=SeamProblemsFAQ

In my code, I have a data table that is bound to a list from a conversation scoped bean. It is dying when trying to resolve the bean during the restore view phase (before the conversation scope is setup).

After playing around for a bit, I found that the problem iis my table sorting:
<t:dataTable ... sortColumn="#{userAdmin.sortProp}" sortAscending="#{userAdmin.sortAsc}">

Is there any way to have this bean be conversation scoped and be able to use the tomahawk sortable table?
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2. Re: NullPointerException and No conversation context active

andrew.rw.robinson Jul 5, 2006 9:10 PM (in response to andrew.rw.robinson)

nevermind, found out that if I set the preserve sort to false, the EL will not be evaluated during restore view
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