1 2 Previous Next 17 Replies Latest reply on Jun 4, 2009 9:47 AM by nbelaevski

java.util.NoSuchElementException

dobreden1 Jun 2, 2009 6:52 AM

Hi - I occasionally get the following error after making a menu selection:

02-Jun-2009 11:42:15 com.sun.facelets.FaceletViewHandler handleRenderException
SEVERE: Error Rendering View[/pages/pageHome.jspx]
java.util.NoSuchElementException
 at java.util.HashMap$HashIterator.nextEntry(HashMap.java:844)
 at java.util.HashMap$KeyIterator.next(HashMap.java:877)
 at java.util.AbstractCollection.toArray(AbstractCollection.java:176)
 at javax.faces.component.UIComponentBase.saveBindingsState(UIComponentBase.java:1473)
 at javax.faces.component.UIComponentBase.saveState(UIComponentBase.java:1266)
 at javax.faces.component.UICommand.saveState(UICommand.java:324)
 at org.ajax4jsf.component.html.HtmlAjaxCommandButton.saveState(HtmlAjaxCommandButton.java:1323)
 at javax.faces.component.UIComponentBase.processSaveState(UIComponentBase.java:1103)
 at javax.faces.component.UIComponentBase.processSaveState(UIComponentBase.java:1119)
 at javax.faces.component.UIComponentBase.processSaveState(UIComponentBase.java:1119)
 at javax.faces.component.UIComponentBase.processSaveState(UIComponentBase.java:1119)
 at javax.faces.component.UIComponentBase.processSaveState(UIComponentBase.java:1119)
 at javax.faces.component.UIComponentBase.processSaveState(UIComponentBase.java:1119)
 at javax.faces.component.UIComponentBase.processSaveState(UIComponentBase.java:1119)
 at javax.faces.component.UIComponentBase.processSaveState(UIComponentBase.java:1119)
 at javax.faces.component.UIComponentBase.processSaveState(UIComponentBase.java:1119)
 at org.ajax4jsf.application.AjaxStateManager.getComponentStateToSave(AjaxStateManager.java:175)
 at org.ajax4jsf.application.AjaxStateManager.buildViewState(AjaxStateManager.java:474)
 at org.ajax4jsf.application.AjaxStateManager.saveSerializedView(AjaxStateManager.java:426)
 at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:615)
 at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100)
 at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176)
 at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
 at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
 at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
 at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
 at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:390)
 at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:517)
 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:233)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
 at java.lang.Thread.run(Thread.java:595)

Any ideas?

Regards,

Michael

1. Re: java.util.NoSuchElementException

ilya_shaikovsky Jun 2, 2009 6:58 AM (in response to dobreden1)

show please at least the page where it occurs.
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2. Re: java.util.NoSuchElementException

dobreden1 Jun 2, 2009 7:01 AM (in response to dobreden1)

Sure, here it is:

<?xml version="1.0" encoding="UTF-8" ?>
<html xmlns:f="http://java.sun.com/jsf/core"
 xmlns:h="http://java.sun.com/jsf/html" xmlns:ui="http://java.sun.com/jsf/facelets"
 xmlns:c="http://java.sun.com/jstl/core" xmlns:fn="http://java.sun.com/jsp/jstl/functions"
 xmlns:a4j="http://richfaces.org/a4j" xmlns:rich="http://richfaces.org/rich">

<body>
 <ui:composition>
 <h:form id="liquidityTableForm">
 <h:panelGrid id="liquidityPanelGrid" columns="1" width="330px">

 <rich:extendedDataTable id="liquidityDataTable"
 selectionMode="single"
 value="#{liquidityDataTableController.dataModel}"
 var="item"
 height="300px"
 >
 <f:facet name="header">
 <h:outputText value="Execution Priority" />
 </f:facet>
 <rich:column id="lpNameCol"
 label="Liquidity Provider"
 sortable="true"
 sortBy="#{item.partyNm}"
 >
 <f:facet name="header">
 <h:outputText value="Liquidity Provider" />
 </f:facet>
 <h:outputText value="#{item.partyNm}" />
 </rich:column>

 <rich:column id="lpScoreCol"
 label="Score"
 sortable="true"
 sortBy="#{item.rankNum}"
 style="text-align: right;"
 >
 <f:facet name="header">
 <h:outputText value="Score" />
 </f:facet>
 <h:outputText value="#{item.rankNum}" />
 </rich:column>

 <rich:column id="lpPartCol"
 label="Participating"
 sortable="true"
 sortBy="#{item.participatingFg}"
 style="text-align: center;"
 >
 <f:facet name="header">
 <h:outputText value="Participating" />
 </f:facet>
 <h:selectBooleanCheckbox value="#{item.participatingFg}" disabled="true">
 </h:selectBooleanCheckbox>
 </rich:column>

 </rich:extendedDataTable>

 <a4j:commandButton value="Edit"
 styleClass="commandButton"
 reRender="liquidityModalPanel"
 binding="#{liquidityDataTableController.editButton}"
 action="#{liquidityModalPanelController.setEditMode}"
 oncomplete="javascript:Richfaces.showModalPanel('liquidityModalPanel');"
 />

 </h:panelGrid>

 </h:form>

 <a4j:include viewId="liquidityModalPanel.jspx" />

 </ui:composition>
</body>
</html>

Michael

3. Re: java.util.NoSuchElementException

kash_meu Jun 2, 2009 7:35 AM (in response to dobreden1)

This error occurs when the <f:selectItems> tag has a different value when it was rendered and at the time of submission the value of <f:selectItems> is different. In other words, the selectItems change in between the response and request.
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4. Re: java.util.NoSuchElementException

ilya_shaikovsky Jun 2, 2009 8:51 AM (in response to dobreden1)

waht is the scope of liquidityDataTableController?
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5. Re: java.util.NoSuchElementException

dobreden1 Jun 2, 2009 8:53 AM (in response to dobreden1)

session scope
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6. Re: java.util.NoSuchElementException

ilya_shaikovsky Jun 2, 2009 8:55 AM (in response to dobreden1)

bindings should be request scoped.
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7. Re: java.util.NoSuchElementException

dobreden1 Jun 4, 2009 4:48 AM (in response to dobreden1)

I am still getting this error but intermittently and we have a customer demo on the horizon. Sometimes the page renders ok - Sometimes not. Can you please explain why the beans should be request scope?

Rgds,

Michael
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8. Re: java.util.NoSuchElementException

nbelaevski Jun 4, 2009 5:47 AM (in response to dobreden1)

Hi Michael,

All JSF components are designed for single-thread access. Placing component to session, you open the door to all sort of concurrent access issues (like the one you get). Another reason is that components are not Serializable, but all session-scoped objects in distributable application has to be so.
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9. Re: java.util.NoSuchElementException

dobreden1 Jun 4, 2009 6:12 AM (in response to dobreden1)

Hi,

Changing all of my controller beans to request scope would not work because I need the controllers to hold state across requests e.g. User selections, button enable/disable, bean values etc. This would be lost if I change them all to request scope.

Rgds,

Michael
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10. Re: java.util.NoSuchElementException

nbelaevski Jun 4, 2009 6:14 AM (in response to dobreden1)

Separate this into two parts: one stored in request scope, another in session; inject the second into first.

Why do you need binding at all?
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11. Re: java.util.NoSuchElementException

dobreden1 Jun 4, 2009 8:30 AM (in response to dobreden1)

Please can you help us out with this question?
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12. Re: java.util.NoSuchElementException

ilya_shaikovsky Jun 4, 2009 8:36 AM (in response to dobreden1)

read the post above.
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13. Re: java.util.NoSuchElementException

dobreden1 Jun 4, 2009 8:45 AM (in response to dobreden1)

I have beans in session scope because they hold data that I don't want to initialise on each request, e.g. a list of values displayed in a table or state about a component. Like commandButtons that need enabling/disabling, or f:selectItems lists on backing beans.
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14. Re: java.util.NoSuchElementException

nbelaevski Jun 4, 2009 8:47 AM (in response to dobreden1)

No problem. Why binding?
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