<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I've been trying to track down a problem affecting several of the Seam 2 examples running on JBoss 6. It appears that JSF restoreView is now sometimes calling EL in places it didn't in earlier JSF versions. If that EL involves a conversation-scoped component, the application will fail since the conversation state is not active until after restoreView. <div><br></div><div>Ex: </div><div><br></div><div>/myView.xhtml contains an <h:dataTable value="#{searchResults}" ... etc/></div><div>If the component that provides searchResults does @In for a conversation-scoped component, like ManagedPersistenceContext, the application will now fail.</div><div><br></div><div><br></div><div>Of course, the view works fine for GET requests, since there is no view being restored. Is this expected behavior for JSF 2, or is it perhaps a bug in the restore view implementation? I'm not familiar enough with the changes in JSF2 yet to know what to expect. Here's a stack trace to give some context. The key problems are around UIViewRoot.processRestoreState and UIData.visitTree.</div><div><br></div><div><br></div><div><br></div><div><span class="Apple-style-span" style="font-family: 'Trebuchet MS', Verdana, Arial, sans-serif; font-size: small; ">Exception during request processing:<div style="font-family: 'Trebuchet MS', Verdana, Arial, sans-serif; font-size: small; ">Caused by javax.servlet.ServletException with message: "@In attribute requires non-null value: searchService.entityManager"<pre style="padding-top: 8px; padding-right: 8px; padding-bottom: 8px; padding-left: 8px; margin-top: 10px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-top-color: rgb(204, 204, 204); border-right-color: rgb(204, 204, 204); border-bottom-color: rgb(204, 204, 204); border-left-color: rgb(204, 204, 204); background-color: rgb(249, 249, 249); ">javax.faces.webapp.FacesServlet.service(FacesServlet.java:323)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:183)
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:95)
org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:637)</pre></div><div style="font-family: 'Trebuchet MS', Verdana, Arial, sans-serif; font-size: small; ">Caused by org.jboss.seam.RequiredException with message: "@In attribute requires non-null value: searchService.entityManager"<pre style="padding-top: 8px; padding-right: 8px; padding-bottom: 8px; padding-left: 8px; margin-top: 10px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-top-color: rgb(204, 204, 204); border-right-color: rgb(204, 204, 204); border-bottom-color: rgb(204, 204, 204); border-left-color: rgb(204, 204, 204); background-color: rgb(249, 249, 249); position: static; z-index: auto; ">org.jboss.seam.Component.getValueToInject(Component.java:2338)
org.jboss.seam.Component.injectAttributes(Component.java:1736)
org.jboss.seam.Component.inject(Component.java:1554)
org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:61)
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)
org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:185)
org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:103)
actions.SearchService_$$_javassist_seam_4.getSearchResults(SearchService_$$_javassist_seam_4.java)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
org.jboss.seam.util.Reflections.invoke(Reflections.java:22)
org.jboss.seam.util.Reflections.invokeAndWrap(Reflections.java:144)
org.jboss.seam.Component.callComponentMethod(Component.java:2249)
org.jboss.seam.Component.getInstanceFromFactory(Component.java:2080)
org.jboss.seam.Component.getInstance(Component.java:2011)
org.jboss.seam.Component.getInstance(Component.java:1983)
org.jboss.seam.Component.getInstance(Component.java:1977)
org.jboss.seam.Namespace.getComponentInstance(Namespace.java:55)
org.jboss.seam.Namespace.getComponentInstance(Namespace.java:50)
org.jboss.seam.el.SeamELResolver.resolveBase(SeamELResolver.java:148)
org.jboss.seam.el.SeamELResolver.getValue(SeamELResolver.java:51)
javax.el.CompositeELResolver.getValue(CompositeELResolver.java:54)
com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
org.jboss.el.parser.AstIdentifier.getValue(AstIdentifier.java:44)
org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:190)
javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:178)
javax.faces.component.UIData.getValue(UIData.java:554)
javax.faces.component.UIData.getDataModel(UIData.java:1243)
javax.faces.component.UIData.setRowIndex(UIData.java:447)
javax.faces.component.UIData.visitTree(UIData.java:1179)
javax.faces.component.UIComponent.visitTree(UIComponent.java:1454)
javax.faces.component.UIViewRoot.processRestoreState(UIViewRoot.java:868)
com.sun.faces.application.StateManagerImpl.restoreView(StateManagerImpl.java:197)
org.jboss.seam.jsf.SeamStateManager.restoreView(SeamStateManager.java:76)
com.sun.faces.application.view.ViewHandlingStrategy.restoreView(ViewHandlingStrategy.java:131)
com.sun.faces.application.view.MultiViewHandler.restoreView(MultiViewHandler.java:143)
org.jboss.seam.jsf.SeamViewHandler.restoreView(SeamViewHandler.java:93)
com.sun.facelets.FaceletViewHandler.restoreView(FaceletViewHandler.java:316)
com.sun.faces.lifecycle.RestoreViewPhase.execute(RestoreViewPhase.java:199)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:110)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:310)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:183)
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:95)
org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
java.lang.Thread.run(Thread.java:637)</pre></div></span><div><br></div></div><div><br></div></body></html>