Re: javax.faces.convert.Converter error, how to diagnose?

I’m rendering a region on a page. The region is a table which is entirely build in java. The .jsff for the region looks kind of like this:
<af:treeTable value="#{backingBeanScope.myBean.treeModel}" var="row" etc…. >
<af:forEach items="#{backingBeanScope.myBean.columns}" var="column">
<af:column binding="#{column.adfColumn}" />
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When a row selection happens, there is context menu build, where one of the menuitems pops a dialog. After the dialog is dismissed a return handler/listener is called:
public void propertyToolReturnHandler(ReturnEvent event)
AdfUtil.showMessageDialog(AdfUtil.MESSAGE_TYPE.INFORMATION, “some msg”, “some msg”, true);
Notice the last param to showMessageDialog, which is “true”, as I want to show the message as inline. However, having it set to “true” causes the following exception. If I set it to “false”, then it does work and a popup message appears with the “some msg” text.
I’m truly stuck trying to figure out what Converter is missing and where. Any ideas will be most welcomed!
The error I get:
[Ljava.lang.Object; cannot be cast to javax.faces.convert.Converter
ADF_FACES-60097:For more information, please see the server's error log for an entry beginning with: ADF_FACES-60096:Server Exception during PPR, #2
Examining the EMGC_OMS1.out file I see (partial):
<Apr 10, 2013 2:39:38 PM PDT> <Error> <oracle.adfinternal.view.faces.config.rich.RegistrationConfigurator> <BEA-000000> <ADF_FACES-60096:Server Exception during PPR, #2
java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to javax.faces.convert.Converter
     at oracle.adfinternal.view.faces.renderkit.rich.ValueRenderer.getConverter(ValueRenderer.java:197)
     at oracle.adfinternal.view.faces.renderkit.rich.ValueRenderer.addClientConverterRenderScript(ValueRenderer.java:220)
     at oracle.adfinternal.view.faces.renderkit.rich.OutputLabelRenderer.encodeAll(OutputLabelRenderer.java:241)
     at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:1431)
     at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:341)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:767)
     at javax.faces.component.UIComponent.encodeAll(UIComponent.java:937)
     at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:405)
     at oracle.adf.view.rich.render.RichRenderer.encodeChild(RichRenderer.java:2778)
     at oracle.adfinternal.view.faces.renderkit.rich.RegionRenderer.access$500(RegionRenderer.java:49)
     at oracle.adfinternal.view.faces.renderkit.rich.RegionRenderer$ChildEncoderCallback.processComponent(RegionRenderer.java:574)
     at oracle.adfinternal.view.faces.renderkit.rich.RegionRenderer$ChildEncoderCallback.processComponent(RegionRenderer.java:553)
     at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:170)
     at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:290)
     at org.apache.myfaces.trinidad.component.UIXGroup.processFlattenedChildren(UIXGroup.java:96)
     at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:160)
     at org.apache.myfaces.trinidad.component.UIXComponent.processFlattenedChildren(UIXComponent.java:290)
     at org.apache.myfaces.trinidad.component.UIXComponent.encodeFlattenedChildren(UIXComponent.java:255)
     at oracle.adfinternal.view.faces.renderkit.rich.RegionRenderer._encodeChildren(RegionRenderer.java:270)
     at oracle.adfinternal.view.faces.renderkit.rich.RegionRenderer.encodeAll(RegionRenderer.java:201)
     at oracle.adf.view.rich.render.RichRenderer.encodeAll(RichRenderer.java:1431)
     at org.apache.myfaces.trinidad.render.CoreRenderer.encodeEnd(CoreRenderer.java:341)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:767)
     at oracle.adf.view.rich.component.fragment.UIXRegion.encodeEnd(UIXRegion.java:321)
     at javax.faces.component.UIComponent.encodeAll(UIComponent.java:937)
     at org.apache.myfaces.trinidad.render.CoreRenderer.encodeChild(CoreRenderer.java:405)
     at oracle.adf.view.rich.render.RichRenderer.encodeChild(RichRenderer.java:2778)
     at oracle.adf.view.rich.render.RichRenderer.encodeStretchedChild(RichRenderer.java:2149)
     at oracle.adfinternal.view.faces.renderkit.rich.PanelBoxRenderer.access$500(PanelBoxRenderer.java:39)
     at oracle.adfinternal.view.faces.renderkit.rich.PanelBoxRenderer$ChildEncoderCallback.processComponent(PanelBoxRenderer.java:2267)
     at oracle.adfinternal.view.faces.renderkit.rich.PanelBoxRenderer$ChildEncoderCallback.processComponen
Ania.
Edited by: user12869467 on Apr 12, 2013 1:57 PM

I did more trial/error with this problem. It is not related to AdfUtil.showMessageDialog().
My java-built table, shows a popup. After the popup is dismissed, I will get this exception, not right away though. The view has tabs, if after dismissing the dialog, I navigate to some other tab, and then back to the one which has the table, that is when the error shows up.
ANY help on how to diagnose this problem will be very much appreciated!
Ania.

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