Changes to web flow action proposal

[Marvin S. Addison]

> In Action.do[Pre|Post]Execute(), I wonder how throwing Exceptions
> which are caught by the AbstractProfileAction for logging and Event
> building would look

I wanted to draw attention to a detail on the topic of exception 
handling, but hopefully it's a detail worth discussion:

         if (doPreExecute(profileRequestContext)) {
             try {
                 doExecute(profileRequestContext);
             } finally {
                 doPostExecute(profileRequestContext);
             }
         }

That puts an awful lot of discipline on implementers of doPostExecute to 
catch all exceptions. Without strict adherence, an exception raised by 
doExecute would be dropped and replaced with that emanating from 
doPostExecute. I have used a library with plugins using the pattern 
above and have cursed the lack of additional error handling in the 
finally block. I hope you'll consider a try/catch block that wraps 
doPostExecute if you go with this design.

M