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charishma gottumukkula
Greenhorn

Joined: Nov 06, 2006
Posts: 20
Difference between actionform in struts and value objects
Merrill Higginson
Ranch Hand

Joined: Feb 15, 2005
Posts: 4864
A Value object or data transfer object (DTO) is a Plain Old Java Object (POJO) that is used to transfer information between the model layer and the view layer. An ActionForm belongs strictly to the view layer, and acts as a Java representation of an individual JSP page.

One might think "Hey, these two objects look similar. Why not just use the ActionForm as a DTO?"

This is not a good idea. Using an ActionForm as a DTO introduces a dependency on Struts into your Model layer. Model objects should maintain independence from any type of view logic or view platform.


Merrill
Consultant, Sima Solutions
 
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subject: struts
 
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