Portlet Tapestry: using @Persist with a ValidationDelegate vs. using an ApplicationStateObject

[Epstein, Ezra]

Doing some validation on a portlet.  Got it working using the recommended 
approach described on

http://tapestry.apache.org/tapestry4/tapestry-portlet/coding-issues.html#Loss+of+Transient+State

I'd like to try doing it where the ValidationDelegate is stored in the session 
for a specific page (portlet).  I.e., not shared with other pages in the app.  
So I tried:

<java-snippet>
        public IValidationDelegate getInitialValidationDelegate() {
                return new PortletValidationDelegate();
        }

        @Persist
        @InitialValue("initialValidationDelegate")
        public abstract IValidationDelegate getValidationDelegate();
</java-snippet>

But it doesn't seem to work.  

Thanks, 

Ezra Epstein 

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