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Subject Custom error result for ExceptionMappingInterceptor
Date Sat, 20 Oct 2012 20:35:01 GMT
  I want to use ExceptionMappingInterceptor to manage any exception thrown
while processing a request. The issue I have is that I want to map the
action to diferent results depending on some parameters of the request.
More specifically, the browser's client can send three diferent types of
request to my app:

    FullScreen -> It's a full navigation, i.e., the browser goes to a
diferent URL. In this case all the screen is reloaded, obviously.
    PaneScreen -> Part of the screen is updated using HTML code ( the
result of a JSP). The request is done using AJAX, so there is no navigation
in the formal sense.
    AJAX/JSON -> The page retrieves some information from the server in
JSON format using AJAX. There is also no navigation.

  The problem I have is that depending on the type of navigation (And I can
know that looking at the headers and the namespace of the action request) I
need to send diferent error results to the client. If it's a FullScreen
request I need to send a full error page. If it's a PaneScreen request,
then only a handful of HTML needs to be sent, since it only affects the
pane that send the request. Last, but not least, if it is a AJAX/JSON
screen I want to send a 500 error code with specific information in JSON
format so a meaningful message can be shown to the user.

  After researching a bit, it seems my only options are to chain an
HandleExceptionAction to the ExceptionMappingInterceptor result, so the
action can send the correct  result to the user (,
or implement my own version of ExceptionMappingInterceptor. Is there any
other option I am missing?



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