I'm not sure what you are asking. Are you having a problem with
displaying the tree before an action method is called?
The bean will be created first time it is evaluated by the EL engine.
What is your application flow (for example, are you navigating to the
page with the tree with an action)?
If the user can just "happen" upon the page (bookmark, link, etc),
then you may want an on-load functionality rather than an action based
functionality to load the tree model. You can also create the tree
model from inside the get property method.
See if you can send us some more information then perhaps I can give
you better advise.
-Andrew
On 6/28/07, Novin <[EMAIL PROTECTED]> wrote:
Hi Andrew,
Thanks for your help.
You are right the problem is with the treedata. It was null and while
<t:tree2 id="clientTree" value="#{accountTreeBean.treeData}"
accountTreeBean.treeData method was throwing nullpointer exception. Bcas I
was not setting the the accountTreeBean in request which now I am doing
explicitly in one of my action class which take cares of tree creation by
calling accountTreeBean.createTree().
And my managed bean "accountTreeBean" entry will not make any difference
bcas I m calling action class method to bring that tree.
<managed-bean>
<managed-bean-name>accountTreeBean</managed-bean-name>
<managed-bean-class>com.ml.ffogo.csin.web.beans.AccountTreeBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
Hope you understand my problem and thanks alot for your valuable time.
Regards,
Novin
Andrew Robinson-5 wrote:
>
> I don't think this is the problem, but I don't think you want the
> a4j:region outside of the form.
>
> As for the exception, that would occur if the tree data model is null.
> Here is the line:
>
> TreeState state = getDataModel().getTreeState();
>
> On 6/27/07, Novin <[EMAIL PROTECTED]> wrote:
>>
>> Hi freinds,
>>
>> I have implemented tamhalk tree2, Initially it was working fine but now
>> It
>> is throwing nullpointer when treis to render the tree.
>>
>> Pls help me. here is the JSP page code for the tree to be displayed and
>> stack trace of the exception.
>>
>> Does any one have any idea?
>>
>> Here is the faces config file.
>> http://www.nabble.com/file/p11330136/faces-config.xml faces-config.xml
>>
>>
>> Thanks and Regards,
>> Novin Jaiswal
>>
>> <f:subview id="accounttreesubview">
>> <a4j:region>
>> <a4j:outputPanel ajaxRendered="true">
>> <h:messages/>
>> </a4j:outputPanel>
>> <h:form id="frmAccountGrpupUpdate">
>> <a4j:outputPanel
>> id="accountTreePanel">
>> <t:tree2 id="clientTree"
>> value="#{accountTreeBean.treeData}"
>> var="node" varNodeToggler="t" >
>> <f:facet name="person" >
>> <h:panelGroup
>> id="grp1">
>> <h:outputText
>> value="#{node.description}" id="temp3"/>
>> </h:panelGroup>
>> </f:facet>
>>
>> <f:facet
>> name="foo-folder">
>> <h:panelGroup
>> id="grp2">
>> <h:outputText
>> value="#{node.description}" id="temp7"/>
>> </h:panelGroup>
>> </f:facet>
>>
>> <f:facet name="document">
>> <h:panelGroup
>> id="grp3">
>> <h:outputText
>> value="#{node.description}"
>> id="temp11"/>
>> </h:panelGroup>
>> </f:facet>
>> </t:tree2>
>> </a4j:outputPanel>
>> </h:form>
>> </a4j:region>
>> </f:subview>
>>
>>
>>
>> SRVE0068E: Uncaught exception thrown in one of the service methods of
>> the
>> servlet: /pages/csin/tiles/account/accountTree.jsp. Exception thrown :
>> java.lang.NullPointerException
>> at
>> org.apache.myfaces.custom.tree2.UITreeData.encodeEnd(UITreeData.java:120)
>> at
>>
org.ajax4jsf.framework.renderer.RendererBase.renderChild(RendererBase.java:286)
>> at
>>
org.ajax4jsf.framework.renderer.RendererBase.renderChildren(RendererBase.java:262)
>> at
>>
org.ajax4jsf.renderkit.html.AjaxOutputPanelRenderer.encodeChildren(AjaxOutputPanelRenderer.java:79)
>> at
>>
javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:735)
>> at
>>
org.ajax4jsf.framework.renderer.RendererBase.renderChild(RendererBase.java:282)
>> at
>>
org.ajax4jsf.framework.renderer.RendererBase.renderChildren(RendererBase.java:262)
>> at
>>
org.ajax4jsf.framework.renderer.RendererBase.renderChild(RendererBase.java:284)
>> at
>>
org.ajax4jsf.framework.renderer.RendererBase.renderChildren(RendererBase.java:262)
>> at
>>
org.ajax4jsf.framework.renderer.AjaxContainerRenderer.encodeChildren(AjaxContainerRenderer.java:100)
>> at
>>
javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:735)
>> at
>> org.ajax4jsf.ajax.UIAjaxRegion.encodeChildren(UIAjaxRegion.java:117)
>> at
>> javax.faces.webapp.UIComponentTag.encodeChildren(UIComponentTag.java:611)
>> at
>> javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:548)
>> at
>> com.ibm._jsp._accountTree._jspx_meth_a4j_region_0(_accountTree.java:448)
>> at
>> com.ibm._jsp._accountTree._jspx_meth_f_subview_0(_accountTree.java:468)
>> at com.ibm._jsp._accountTree._jspService(_accountTree.java:93)
>> at
>> com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:85)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
>> at
>>
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:966)
>> at
>>
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:907)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:118)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:701)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:646)
>> at
>>
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:475)
>> at
>>
com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:463)
>> at
>>
com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:115)
>> at
>>
com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:168)
>> at
>>
com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionProcessor.handleRequest(AbstractJSPExtensionProcessor.java:270)
>> at
>>
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java:606)
>> at
>>
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:1034)
>> at
>> org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:484)
>> at
>> org.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:137)
>> at
>> org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:177)
>> at
>> org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:756)
>> at
>>
org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:881)
>> at
>> org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:473)
>> at
>> com.ibm._jsp._commonLayout._jspx_meth_tiles_insert_3(_commonLayout.java:212)
>> at
>> com.ibm._jsp._commonLayout._jspx_meth_f_view_0(_commonLayout.java:264)
>> at com.ibm._jsp._commonLayout._jspService(_commonLayout.java:131)
>> at
>> com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:85)
>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
>> at
>>
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:966)
>> at
>>
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:907)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:118)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:701)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:646)
>> at
>>
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:475)
>> at
>>
com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:463)
>> at
>>
com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:115)
>> at
>>
com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:168)
>> at
>>
com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:308)
>> at
>>
com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:325)
>> at
>>
org.apache.myfaces.tomahawk.application.jsp.JspTilesViewHandlerImpl.dispatch(JspTilesViewHandlerImpl.java:236)
>> at
>>
org.apache.myfaces.tomahawk.application.jsp.JspTilesViewHandlerImpl.renderView(JspTilesViewHandlerImpl.java:222)
>> at
>>
org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
>> at
>>
org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:233)
>> at
>>
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
>> at
>> com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:220)
>> at
>> com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:118)
>> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
>> at
>>
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:966)
>> at
>>
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:907)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
>> at
>>
org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
>> at
>>
org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
>> at
>>
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
>> at
>>
org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)
>> at
>>
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:701)
>> at
>>
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:646)
>> at
>>
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:475)
>> at
>>
com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:463)
>> at
>>
com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:92)
>> at
>> com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:744)
>> at
>> com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1433)
>> at
>> com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:93)
>> at
>>
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:465)
>> at
>>
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:394)
>> at
>>
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:274)
>> at
>>
com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
>> at
>>
com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
>> at
>>
com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:152)
>> at
>>
com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:213)
>> at
>>
com.ibm.io.async.AbstractAsyncFuture.fireCompletionActions(AbstractAsyncFuture.java:195)
>> at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
>> at
>> com.ibm.io.async.ResultHandler.complete(ResultHandler.java:194)
>> at
>> com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:741)
>> at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:863)
>> at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1510)
>>
>>
>> --
>> View this message in context:
>>
http://www.nabble.com/Problem-in-Tree2%3A-nullpointer-org.apache.myfaces.custom.tree2.UITreeData.encodeEnd-tf3990148.html#a11330136
>> Sent from the MyFaces - Users mailing list archive at Nabble.com.
>>
>>
>
>
--
View this message in context:
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