apex:dynamicComponent rerender gives 500 Internal Server Error

Question

I created a dynamic component:

 public Component.Flow.Interview getFlow() {
        Component.Flow.Interview flow = new Component.Flow.Interview();
        flow.name = xx.Flow_Name__c;
        return flow;
    }

and my visualforce page is:

<apex:page controller="Sample1" >


<apex:outputPanel id="textPanel" layout="block" style="height:100px;background-color:#{!xx.Header_Color__c}" > 
<apex:outputText style="font-size:250%;margin:10px;" value="{!xx.Tag_Line__c}"></apex:outputText>
<apex:outputText style="display:block;margin:10px;" value="{!screenLabel}"></apex:outputText>
</apex:outputPanel>
<apex:outputPanel id="component">
<apex:outputPanel rendered="{!componentRender}">
<apex:dynamicComponent componentValue="{!flow}" />
</apex:outputPanel>
</apex:outputPanel>
<apex:form >
<apex:outputPanel layout="block" style="height:100px;background-color:#{!xx.Footer_Color__c}" />
<apex:outputPanel id="ddff" />
<apex:outputPanel id="flowPanel">
<apex:outputPanel rendered="{!NOT(rendering)}">
<apex:actionFunction name="receiveFile" action="{!receiveMetadataZipFile}" rerender="ddff" oncomplete="unzip();">
      <apex:param name="filename" assignTo="{!MetadataFileName}" value=""/>
      <apex:param name="filedata" assignTo="{!MetadataFileData}" value=""/>
</apex:actionFunction>  
 <apex:actionFunction name="receiveComplete" action="{!receiveComplete}" rerender="flowPanel,textPanel,component" />

</apex:outputPanel>
</apex:outputPanel>

<apex:outputPanel >
<apex:actionPoller interval="5" action="{!checkStatus}" rendered="{!rendering}" rerender="flowPanel" />
</apex:outputPanel>
</apex:form>

</apex:page>

When receivecomplete get called its give me error Internal server error. Below is screenshot of internal server error. If I change its definition from:

<apex:actionFunction name="receiveComplete" action="{!receiveComplete}" rerender="flowPanel,textPanel,component" />

to:

 <apex:actionFunction name="receiveComplete" action="{!receiveComplete}" rerender="flowPanel,textPanel,component" />

then there is no error but component panel is not rerendering. Please help how to avoid this error?

Answer 1

Your two apex:actionFunction versions look the same to me...

As the Component.Flow.Interview is not part of the view state (and can't be because it isn't serializable), when you re-render at best you will get back to the original state when the page first opened. Is that what you are aiming to do? (And at worst perhaps the 500 error you are seeing.)

To get more information about the error screen that you show, you need to create a case with Salesforce support and quote the Error ID numbers. This allows support to check the internal log files that are created when this sort of unhandled error is generated in the platform and then sometimes provides useful information back to you.