0 Replies Latest reply on Jan 15, 2008 11:12 AM by Melanie Ntolo

    Bug in the org.richfaces.model.TreeDataModel.doWalk method??

    Melanie Ntolo Newbie

      I'm using richfaces 3.1.3.GA.

      I have a page where I'm rendering a tree with contextmenu inside the nodes.
      With the contextmenu, I can add new nodes, delete, copy or move nodes.

      I'm testing my tree by trying to delete nodes concurrently through the contextmenu.
      I'm able to delete a single node without failure.

      If I start a second "delete" operation before the end of the first one,
      the org.richfaces.model.TreeDataModel.doWalk() method fails when rendering the page.

      Maybe the code of the doWalk() tries to change the objects of the current iteration or something like this...

      Please have a look on the stacktrace below to have a better idea...

      How can I go around this failure? I think there is a problem in the doWalk() method.

      Thank you for telling me what you are thinking about this.

      GRAVE: Error Rendering View[/view/admin/main/TPZAdminSystemConfigTree.xhtml]
      java.util.ConcurrentModificationException
       at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:365)
       at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:384)
       at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:383)
       at org.richfaces.model.TreeDataModel.doWalk(TreeDataModel.java:93)
       at org.richfaces.model.TreeDataModel.doWalk(TreeDataModel.java:116)
       at org.richfaces.model.TreeDataModel.walk(TreeDataModel.java:139)
       at org.richfaces.component.UITree.walk(UITree.java:323)
       at org.richfaces.renderkit.TreeRendererBase.writeContent(TreeRendererBase.java:629)
       at org.richfaces.renderkit.TreeRendererBase.encodeChildren(TreeRendererBase.java:572)
       at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
       at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
       at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
       at org.ajax4jsf.renderkit.html.AjaxOutputPanelRenderer.encodeChildren(AjaxOutputPanelRenderer.java:79)
       at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
       at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:143)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:86)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:134)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:86)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:134)
       at org.ajax4jsf.renderkit.AjaxContainerRenderer.encodeAjax(AjaxContainerRenderer.java:122)
       at org.ajax4jsf.component.AjaxViewRoot.encodeAjax(AjaxViewRoot.java:553)
       at org.ajax4jsf.component.AjaxViewRoot$4.invokeRoot(AjaxViewRoot.java:384)
       at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:56)
       at org.ajax4jsf.context.AjaxContextImpl.invokeOnRegionOrRoot(AjaxContextImpl.java:170)
       at org.ajax4jsf.component.AjaxViewRoot.encodeChildren(AjaxViewRoot.java:401)
       at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
       at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
       at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
       at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
       at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
       at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
       at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
       at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:44)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:307)
       at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
       at org.jboss.seam.servlet.SeamFilter$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.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
       at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
       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:44)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
       at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
       at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
       at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
       at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
       at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
       at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
       at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
       at java.lang.Thread.run(Thread.java:595)
      15:47:40,062 WARN [lifecycle] executePhase(RENDER_RESPONSE 6,com.sun.faces.context.FacesContextImpl@1e25e47) threw exception
      java.util.ConcurrentModificationException
       at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:365)
       at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:384)
       at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:383)
       at org.richfaces.model.TreeDataModel.doWalk(TreeDataModel.java:93)
       at org.richfaces.model.TreeDataModel.doWalk(TreeDataModel.java:116)
       at org.richfaces.model.TreeDataModel.walk(TreeDataModel.java:139)
       at org.richfaces.component.UITree.walk(UITree.java:323)
       at org.richfaces.renderkit.TreeRendererBase.writeContent(TreeRendererBase.java:629)
       at org.richfaces.renderkit.TreeRendererBase.encodeChildren(TreeRendererBase.java:572)
       at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
       at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
       at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
       at org.ajax4jsf.renderkit.html.AjaxOutputPanelRenderer.encodeChildren(AjaxOutputPanelRenderer.java:79)
       at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
       at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:143)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:86)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:134)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:86)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:134)
       at org.ajax4jsf.renderkit.AjaxContainerRenderer.encodeAjax(AjaxContainerRenderer.java:122)
       at org.ajax4jsf.component.AjaxViewRoot.encodeAjax(AjaxViewRoot.java:553)
       at org.ajax4jsf.component.AjaxViewRoot$4.invokeRoot(AjaxViewRoot.java:384)
       at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:56)
       at org.ajax4jsf.context.AjaxContextImpl.invokeOnRegionOrRoot(AjaxContextImpl.java:170)
       at org.ajax4jsf.component.AjaxViewRoot.encodeChildren(AjaxViewRoot.java:401)
       at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
       at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
       at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
       at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
       at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
       at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
       at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
       at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:44)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:307)
       at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
       at org.jboss.seam.servlet.SeamFilter$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.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
       at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
       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:44)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
       at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
       at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
       at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
       at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
       at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
       at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
       at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
       at java.lang.Thread.run(Thread.java:595)
      15:47:40,125 ERROR [ExceptionFilter] handling uncaught exception
      javax.servlet.ServletException
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
       at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:44)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:307)
       at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
       at org.jboss.seam.servlet.SeamFilter$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.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
       at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
       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:44)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
       at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
       at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
       at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
       at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
       at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
       at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
       at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
       at java.lang.Thread.run(Thread.java:595)
      Caused by: java.util.ConcurrentModificationException
       at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:365)
       at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:384)
       at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:383)
       at org.richfaces.model.TreeDataModel.doWalk(TreeDataModel.java:93)
       at org.richfaces.model.TreeDataModel.doWalk(TreeDataModel.java:116)
       at org.richfaces.model.TreeDataModel.walk(TreeDataModel.java:139)
       at org.richfaces.component.UITree.walk(UITree.java:323)
       at org.richfaces.renderkit.TreeRendererBase.writeContent(TreeRendererBase.java:629)
       at org.richfaces.renderkit.TreeRendererBase.encodeChildren(TreeRendererBase.java:572)
       at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
       at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
       at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
       at org.ajax4jsf.renderkit.html.AjaxOutputPanelRenderer.encodeChildren(AjaxOutputPanelRenderer.java:79)
       at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
       at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:143)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:86)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:134)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:86)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:134)
       at org.ajax4jsf.renderkit.AjaxContainerRenderer.encodeAjax(AjaxContainerRenderer.java:122)
       at org.ajax4jsf.component.AjaxViewRoot.encodeAjax(AjaxViewRoot.java:553)
       at org.ajax4jsf.component.AjaxViewRoot$4.invokeRoot(AjaxViewRoot.java:384)
       at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:56)
       at org.ajax4jsf.context.AjaxContextImpl.invokeOnRegionOrRoot(AjaxContextImpl.java:170)
       at org.ajax4jsf.component.AjaxViewRoot.encodeChildren(AjaxViewRoot.java:401)
       at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
       at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
       at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
       at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
       at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
       at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
       at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
       ... 53 more
      15:47:40,140 ERROR [ExceptionFilter] exception root cause
      java.util.ConcurrentModificationException
       at java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:365)
       at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:384)
       at java.util.LinkedHashMap$EntryIterator.next(LinkedHashMap.java:383)
       at org.richfaces.model.TreeDataModel.doWalk(TreeDataModel.java:93)
       at org.richfaces.model.TreeDataModel.doWalk(TreeDataModel.java:116)
       at org.richfaces.model.TreeDataModel.walk(TreeDataModel.java:139)
       at org.richfaces.component.UITree.walk(UITree.java:323)
       at org.richfaces.renderkit.TreeRendererBase.writeContent(TreeRendererBase.java:629)
       at org.richfaces.renderkit.TreeRendererBase.encodeChildren(TreeRendererBase.java:572)
       at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
       at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
       at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
       at org.ajax4jsf.renderkit.html.AjaxOutputPanelRenderer.encodeChildren(AjaxOutputPanelRenderer.java:79)
       at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
       at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:143)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:86)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:134)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxChildren(AjaxChildrenRenderer.java:86)
       at org.ajax4jsf.renderkit.AjaxChildrenRenderer.encodeAjaxComponent(AjaxChildrenRenderer.java:134)
       at org.ajax4jsf.renderkit.AjaxContainerRenderer.encodeAjax(AjaxContainerRenderer.java:122)
       at org.ajax4jsf.component.AjaxViewRoot.encodeAjax(AjaxViewRoot.java:553)
       at org.ajax4jsf.component.AjaxViewRoot$4.invokeRoot(AjaxViewRoot.java:384)
       at org.ajax4jsf.context.JsfOneOneInvoker.invokeOnRegionOrRoot(JsfOneOneInvoker.java:56)
       at org.ajax4jsf.context.AjaxContextImpl.invokeOnRegionOrRoot(AjaxContextImpl.java:170)
       at org.ajax4jsf.component.AjaxViewRoot.encodeChildren(AjaxViewRoot.java:401)
       at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
       at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
       at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
       at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
       at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
       at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
       at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
       at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:44)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:307)
       at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
       at org.jboss.seam.servlet.SeamFilter$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.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
       at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
       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:44)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
       at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
       at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
       at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
       at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
       at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
       at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
       at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
       at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
       at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
       at java.lang.Thread.run(Thread.java:595)