what are responsibilities of a struts action class?which responsibility is view related aspect of boundary component?Does it provide any facilities for separating these view related aspects for the controller related action classes?

what are responsibilities of a struts action class?which responsibility is view related aspect of boundary component?Does it provide any facilities for separating these view related aspects for the controller related action classes?

An Action class in the struts application extends Struts \'org.apache.struts.action.Action\" Class. Action class acts as wrapper around the business logic and provides an interface to the application\'s Model layer. It acts as glue between the View and Model layer. It also transfers the data from the view layer to the specific business process layer and finally returns the processed data from business layer to the view layer.

An Action works as an adapter between the contents of an incoming HTTP request and the business logic that corresponds to it. Then the struts controller (ActionServlet) slects an appropriate Action and creates an instance if necessary, and finally calls execute method.

To use the Action, we need to  Subclass and overwrite the execute() method. In the Action Class don\'t add the business process logic, instead move the database and business process logic to the process or dao layer.

The ActionServlet (command) passes the parametrized class to Action Form using the execute() method. The return type of the execute method is ActionForward which is used by the Struts Framework to forward the request to the file as per the value of the returned ActionForward object.


By:vinay
Date:0000-00-00 00:00:00

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