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From mike.sa...@convergys.com
Subject Re: [Trinidad] Problems working with Ajax4JSF
Date Tue, 10 Jul 2007 12:37:07 GMT
My first reaction to this was... since the form was already rendered and 
we are just updating a part of the page, this should not be a problem. But 
my guess is that in my case where I am taking a form element from disabled 
to enabled that the necessary javascript would not have been initially 
generated and that I really need to have the form element re-rendered.  I 
actually did try to have the click on the check box initiate a re-render 
of the form.  This seemed to work except for the generation of the 
following warning...
Jul 2, 2007 12:29:31 PM 
org.apache.myfaces.trinidadinternal.io.DebugResponseWriter _logDuplicateId
WARNING: The id "org.ajax4jsf.view.state" is used more than once.

When I mentioned this on the Ajax4JSF forum I was told that rerendering 
the form is not the right way.  I am not sure now based on what you are 
saying that that should be correct.  It seems reasonable to expect that 
the form would have to be rerendered.

"Adam Winer" <awiner@gmail.com> wrote on 07/10/2007 01:16:25 AM:

> But if that doesn't bear fruit, it wouldn't be that hard
> to solve this entirely in Trinidad - in each component
> that requires a FormData, use a hook that will
> initialize it if it hasn't been rendered yet.
> 
> However, you'll still have some problems.  Since the
> FormRenderer isn't involved, and Trinidad has no
> obvious hooks at all into the A4J code, Trinidad
> has no way to add any of the form-level Javascript
> that accompanies our components.  Integration
> at that layer... well, it'd either have to A4J + Trinidad
> working very closely together, or JSF 2.0.
> 
> -- Adam
> 
> 
> 
> On 7/9/07, Adam Winer <awiner@gmail.com> wrote:
> > It's a problem that has to be handled in some bit of code
> > integrating the two libraries.  I'm curious in this case
> > how the RenderingContext actually got created at all,
> > since there's apparently no Trinidad ViewHandler on the
> > stack...   If someone could track *that* down, we might
> > have a good idea where to add the code to default
> > the FormData.
> >
> > -- Adam
> >
> >
> > On 7/9/07, mike.sauer@convergys.com <mike.sauer@convergys.com> wrote:
> > >
> > > I assume then that this should be considered a problem with 
> Ajax4JSF and not
> > > something to be addressed in Trinidad?
> > >
> > >
> > > "Adam Winer" <awiner@gmail.com> wrote on 07/09/2007 12:44:50 PM:
> > >
> > >  > Hrm, true, but somehow there definitely is a RenderingContext; 
the
> > > > issue is that the FormData did not get created.
> > > >
> > >  > To solve this, some bit of Ajax4JSF code would need a hook
> > > > point that could be subclassed/plugged-in to that would let
> > > > Trinidad set up a FormData object.
> > > >
> > >  > -- Adam
> > > >
> > >
> > > > On 7/9/07, Matthias Wessendorf <matzew@apache.org> wrote:
> > > > I asked, because I noticed on your stack there is only this 
ViewHandler
> > >  >
> > >  > AjaxViewHandler (for ajax4jsf)
> > >  >
> > >  > On 7/9/07, mike.sauer@convergys.com < mike.sauer@convergys.com>

wrote:
> > >  > >
> > >  > > Yes, I did.  I followed all of the non-seam directions (since I

amnot
> > > using
> > >  > > seam).
> > >  > >
> > >  > > mwessendorf@gmail.com wrote on 07/09/2007 11:57:46 AM:
> > >  > >
> > >  > >
> > >  > >  > have u checked this page
> > >  > >  >
> > >  > >  > http://wiki.apache.org/myfaces/TrinidadSeamAjax4Jsf
> > >  > >  >
> > >  > >  > On 7/9/07, mike.sauer@convergys.com 
<mike.sauer@convergys.com>
> > > wrote:
> > >  > >  > >
> > >  > >  > > I am trying to use Ajax4Jsf with Trinidad, Facelets,

> and JSF 1.2.
> > > (I am
> > >  > >  > > considering using the RichRaces components as well) Inmy

demo I
> > > have a
> > >  > >  > > required text field, a check box and a set of fields
that 
are
> > > enabled
> > >  > > if the
> > >  > >  > > checkbox is selected. I am trying to use ajax on the

checkboxand
> > > only
> > >
> > >  > >  > > refresh the fields that are associated with it.
> > >  > >  > >  If the initial state of the page is that the box is

> not selected
> > > and
> > >  > > the
> > >  > >  > > fields are disabled, selecting the checkbox results in
the
> > > following:
> > >  > >  > >
> > >  > >  > > WARNING: executePhase(RENDER_RESPONSE
> > >  > >  > > 6,org.apache.myfaces.trinidadinternal.context.
> > >  > >  > FacesContextFactoryImpl$CacheRenderKit@10e98d8)
> > >  > >  > > threw exception
> > >  > >  > > java.lang.NullPointerException
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.
> > >  > >  > EditableValueRenderer.
> > >  > >  > addOnSubmitConverterValidators 
(EditableValueRenderer.java:206)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.
> > >  > >  >
> > >  > > SimpleInputTextRenderer.
> > >  > encodeAllAsElement(SimpleInputTextRenderer.java :105)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.
> > >  > >  > SimpleInputListOfValuesRenderer.
> > >  > >  >
> > >  > > renderTextField(SimpleInputListOfValuesRendere
> > > r.java:197)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.
> > >  > >  > SimpleInputListOfValuesRenderer.
> > >  > >  >
> > >  > > encodeAllAsElement(SimpleInputListOfValuesRendere
> > > r.java:154)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.
> > >  > >  >
> > >  > > SimpleInputDateRenderer.
> > >  > encodeAllAsElement(SimpleInputDateRenderer.java:194)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.
> > >  > >  > FormElementRenderer.encodeAll(FormElementRenderer.java:109)
> > >  > >  > >         at
> > >  > >  > > org.apache.myfaces.trinidad.render.CoreRenderer.
> > >  > >  > delegateRenderer(CoreRenderer.java:318)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml .
> > >  > >  > InputLabelAndMessageRenderer.
> > >  > >  >
> > >  > >
> > > renderFieldCellContents(InputLabelAndMessageRenderer.java:142)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml .
> > >  > >  >
> > >  > >
> > > 
LabelAndMessageRenderer._renderFieldCell(LabelAndMessageRenderer.java:375)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.
> > >  > >  >
> > >  > >
> > > LabelAndMessageRenderer.encodeAll(LabelAndMessageRenderer.java:270)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.renderkit.core.xhtml.
> > >  > >  >
> > >  > > InputLabelAndMessageRenderer .
> > >  > encodeAll(InputLabelAndMessageRenderer.java:120)
> > >  > >  > >         at
> > >  > >  > > org.apache.myfaces.trinidad.render.CoreRenderer.
> > >  > >  > encodeEnd(CoreRenderer.java:208)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidad.component.UIXComponentBase.
> > >  > >  > encodeEnd(UIXComponentBase.java:733)
> > >  > >  > >         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:812)
> > >  > >  > >         at
> > >  > >  > > org.ajax4jsf.framework.renderer.RendererBase.
> > >  > >  > renderChild(RendererBase.java:282)
> > >  > >  > >         at
> > >  > >  > >
> > > org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.
> > >  > >  > encodeAjaxComponent(AjaxChildrenRenderer.java:159)
> > >  > >  > >         at
> > >  > >  > >
> > > org.ajax4jsf.framework.renderer.AjaxChildrenRenderer .
> > >  > >  > encodeAjaxChildren(AjaxChildrenRenderer.java:97)
> > >  > >  > >         at
> > >  > >  > >
> > > org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.
> > >  > >  > encodeAjaxComponent(AjaxChildrenRenderer.java :150)
> > >  > >  > >         at
> > >  > >  > >
> > > org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.
> > >  > >  > encodeAjaxChildren(AjaxChildrenRenderer.java:97)
> > >  > >  > >         at
> > >  > >  > >
> > > org.ajax4jsf.framework.renderer.AjaxChildrenRenderer.
> > >  > >  > encodeAjaxComponent(AjaxChildrenRenderer.java:150)
> > >  > >  > >         at
> > >  > >  > >
> > > org.ajax4jsf.framework.renderer.AjaxContainerRenderer .
> > >  > >  > encodeAjax(AjaxContainerRenderer.java:125)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > 
org.ajax4jsf.framework.ajax.AjaxViewRoot.encodeAjax(AjaxViewRoot.java:549)
> > >  > >  > >         at
> > >  > >  > > org.ajax4jsf.framework.ajax.AjaxContext.
> > >  > >  > renderAjaxRegion(AjaxContext.java:307)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.ajax4jsf.framework.ajax.AjaxContext$2.invoke(AjaxContext.java
> > > :222)
> > >  > >  > >         at
> > >  > >  > > org.ajax4jsf.framework.ajax.JsfOneOneInvoker.
> > >  > >  > invokeOnComponent(JsfOneOneInvoker.java:75)
> > >  > >  > >         at
> > >  > >  > > org.ajax4jsf.framework.ajax .AjaxContext.
> > >  > >  > invokeOnComponent(AjaxContext.java:178)
> > >  > >  > >         at
> > >  > >  > > org.ajax4jsf.framework.ajax.AjaxContext.
> > >  > >  > renderSubmittedAjaxRegion(AjaxContext.java:236)
> > >  > >  > >         at
> > >  > >  > > org.ajax4jsf.framework.ajax.AjaxViewHandler.
> > >  > >  > renderView(AjaxViewHandler.java:256)
> > >  > >  > >         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:269)
> > >  > >  > >         at
> > >  > >  > > org.apache.catalina.core.ApplicationFilterChain.
> > >  > >  > doFilter(ApplicationFilterChain.java:188)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.
> > >  > >  > _invokeDoFilter(TrinidadFilterImpl.java :208)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.
> > >  > >  > _doFilterImpl(TrinidadFilterImpl.java:165)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.
> > >  > >  > doFilter(TrinidadFilterImpl.java:138)
> > >  > >  > >         at
> > >  > >  > >
> > > org.apache.myfaces.trinidad.webapp.TrinidadFilter.
> > >  > >  > doFilter(TrinidadFilter.java:92)
> > >  > >  > >         at
> > >  > >  > > org.apache.catalina.core.ApplicationFilterChain.
> > >  > >  > internalDoFilter(ApplicationFilterChain.java:215)
> > >  > >  > >         at
> > >  > >  > > org.apache.catalina.core.ApplicationFilterChain.
> > >  > >  > doFilter(ApplicationFilterChain.java:188)
> > >  > >  > >         at
> > >  > >  > >
> > > org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.
> > >  > >  > doXmlFilter(BaseXMLFilter.java:127)
> > >  > >  > >         at
> > >  > >  > > org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.
> > >  > >  > doFilter(BaseFilter.java:277)
> > >  > >  > >         at
> > >  > >  > > org.apache.catalina.core.ApplicationFilterChain.
> > >  > >  > internalDoFilter(ApplicationFilterChain.java:215)
> > >  > >  > >         at
> > >  > >  > > org.apache.catalina.core.ApplicationFilterChain.
> > >  > >  > doFilter(ApplicationFilterChain.java:188)
> > >  > >  > >         at
> > >  > >  > > org.apache.catalina.core.StandardWrapperValve.
> > >  > >  > invoke(StandardWrapperValve.java:210)
> > >  > >  > >         at
> > >  > >  > > org.apache.catalina.core.StandardContextValve.
> > >  > >  > invoke(StandardContextValve.java:174)
> > >  > >  > >         at
> > >  > >  > > org.apache.catalina.core.StandardHostValve.
> > >  > >  > invoke( StandardHostValve.java:127)
> > >  > >  > >         at
> > >  > >  > > org.apache.catalina.valves.ErrorReportValve.
> > >  > >  > invoke(ErrorReportValve.java:117)
> > >  > >  > >         at
> > >  > >  > > org.apache.catalina.core .StandardEngineValve.
> > >  > >  > invoke(StandardEngineValve.java:108)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.catalina.connector.CoyoteAdapter.
> service(CoyoteAdapter.java:151)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
> > >  > >  > >         at
> > >  > >  > > org.apache.coyote.http11.
> > >  > >  > Http11BaseProtocol$Http11Conne ctionHandler.
> > >  > >  > processConnection(Http11BaseProtocol.java:665)
> > >  > >  > >         at
> > >  > >  > > org.apache.tomcat.util.net.PoolTcpEndpoint.
> > >  > >  > processSocket( PoolTcpEndpoint.java:528)
> > >  > >  > >         at
> > >  > >  > >
> > > org.apache.tomcat.util.net.LeaderFollowerWorkerThread.
> > >  > >  > runIt(LeaderFollowerWorkerThread .java:81)
> > >  > >  > >         at
> > >  > >  > >
> > >  > >
> > > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.
> > >  > >  > run(ThreadPool.java:685)
> > >  > >  > >         at java.lang.Thread.run(Thread.java :595)
> > >  > >  > >
> > >  > >  > >
> > >  > >  > > Here is the facelet....
> > >  > >  > >
> > >  > >  > > <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 
Transitional//EN"
> > >  > >  > >
> > >  > >
> > > "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
> > >  > >  > >  <html xmlns="http://www.w3.org/1999/xhtml "
> > >  > >  > >       xmlns:h="http://java.sun.com/jsf/html"
> > >  > >  > >       xmlns:f="http://java.sun.com/jsf/core "
> > >  > >  > >       xmlns:ui="http://java.sun.com/jsf/facelets"
> > >  > >  > >       xmlns:tr="http://myfaces.apache.org /trinidad"
> > >  > >  > >
> > >  > > xmlns:trh="http://myfaces.apache.org/trinidad/html"
> > >  > >  > >       xmlns:a4j="
> > > https://ajax4jsf.dev.java.net/ajax">
> > >  > >  > >   <body>
> > >  > >  > >     <form name="form" jsfc="h:form"  >
> > >  > >  > >       <input id="custRef" type="text" jsfc="h:inputText"
> > >  > >  > >         required="true" value="#{customer.custRef}"
> > >  > >  > >         label="Customer reference"/><br/>
> > >  > >  > >
> > >  > >  > >       <h:selectBooleanCheckbox name="hierBill" 
id="toSend2"
> > >  > >  > >         value="#{customer.hierBill}">
> > >  > >  > >         <f:selectItem itemLabel="Hierarchy Billing"
> > >  > >  > >           itemValue="true"/>
> > >  > >  > >         <a4j:support event="onclick" 
reRender="hierBillStuff"
> > >  > >  > > ajaxSingle="true"/>
> > >  > >  > >       </h:selectBooleanCheckbox>
> > >  > >  > >       <a4j:outputPanel ajaxRendered="true">
> > >  > >  > >         <h:messages/>
> > >  > >  > >       </a4j:outputPanel>
> > >  > >  > >       <a4j:outputPanel id="hierBillStuff">
> > >  > >  > >         <label class="required">Bill period:</label><br/>
> > >  > >  > >         <input type="text" name="billPer" size="10"

id="billPer"
> > >  > >  > >           jsfc="h:inputText" 
value="#{customer.billPeriod}"
> > >  > >  > >           required="true"
> > >  > >  > > disabled="#{!createCustBean.hierBill}"/>
> > >  > >  > >         <select name="select" jsfc="h:selectOneListbox"

size="1"
> > >  > >  > >           id="billPerFreq"
> > >  > >  > >           value="#{customer.billPeriodFreq}"
> > >  > >  > >           required="true"
> > >  > >  > > disabled="#{!createCustBean .hierBill}">
> > >  > >  > >           <f:selectItems
> > > value="#{createCustBean.billPeriodFreqs}"/>
> > >  > >  > >         </select>
> > >  > >  > >
> > >  > >  > >         <label class="required">Next bill 
date:</label><br/>
> > >  > >  > >         <tr:inputDate id="nextBillDate"
> > >  > >  > >           value="#{customer.nextBillDate}"
> > >  > >  > >           disabled="#{!createCustBean.hierBill}"
> > >  > >  > > required="true" />
> > >  > >  > >
> > >  > >  > >         <label class="required">Number of bills
per
> > >  > > statement:</label><br />
> > >  > >  > >         <input type="text" name="numBills" id="numBills"
> > >  > >  > >           jsfc="h:inputText" value="#{customer.numBills}"
> > >  > >  > >           disabled="#{!createCustBean.hierBill}"
> > >  > >  > > required="true"/>
> > >  > >  > >       </a4j:outputPanel>
> > >  > >  > >     </form>
> > >  > >  > >     <ui:debug hotkey="p" 
rendered="#{initParam.debugMode}"/>
> > >  > >  > >     <a4j:log hotkey="o"/>
> > >  > >  > >   </body>
> > >  > >  > >  </html>
> > >  > >  > >
> > >  > >  > >
> > >  > >  > > The problem seems to be that the Trinidad 
EditableValueRender
> > > class
> > >  > > (which
> > >  > >  > > is the base class of the input field renderers) expects
a
> > > reference to
> > >  > > a
> > >  > >  > > FormData object in a rendering context. The FormData

object is
> > >  > > established
> > >  > >  > > in the context when the form element is rendered. In

> the suggested
> > >  > > approach
> > >  > >  > > of just rendering the affected fields the form 
> component does not
> > > get
> > >  > >  > > rerendered so as a result the FormData object reference

does not
> > > get
> > >  > > set and
> > >  > >  > > therefore a null pointer results.
> > >  > >  > >
> > >  > >  > >  It appears that Trinidad and Ajax4JSF are incompatible

for this
> > > type
> > >  > > of
> > >  > >  > > thing.
> > >  > >  > >
> > >  > >  >
> > >  > >  >
> > >  > >  > --
> > >  > >  > Matthias Wessendorf
> > >  > >  >
> > >  > >  > further stuff:
> > >  > >  > blog: http://matthiaswessendorf.wordpress.com/
> > >  > >  > mail: matzew-at-apache-dot-org
> > >  > >
> > >  >
> > >  >
> > >  > --
> > >  > Matthias Wessendorf
> > >  >
> > >  > further stuff:
> > >  > blog: http://matthiaswessendorf .wordpress.com/
> > >  > mail: matzew-at-apache-dot-org
> >

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