I have read Michael Jouravlev's article:
http://wiki.apache.org/struts/StrutsCatalogInputOutputSeparation

I can't find any blog or comment box on the page, so I'll write here. I
would like people to freely respond to my comments.

I disagree with the two-actions methodology to solve the separation of input
and output data. If Actions are a web-interface into your business logic,
there is no need to go into another action to do more processing; I believe
the chains approach in Struts 1.3 solves this problem by keeping chains of
logic below the Web/Struts layer. 

This technique is known as ActionChaining and, as I agree, it seems to be
frowned upon:
http://wiki.apache.org/struts/ActionChaining

I personally do not like putting any output data in the form unless it
started as input. I envision ActionForms to be tightly linked to HTML forms.
Conceptually speaking, since HTML forms can only contain input-like
elements, so should only ActionForm objects too. I put my output data
exclusively in request or session attributes as necessary, but never the
form; I believe this complicates and misuses the conception of a form.

I am ready to be disagreed with... But I want to know why.

Thanks,
Paul






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