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What is Model 2 Front Controller architecture?

Pragya Keshap answered on March 1, 2023 Popularity 1/10 Helpfulness 1/10

answer What is Model 2 Front Controller architecture?

What is Model 2 Front Controller architecture?

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Controller : The controller is the initial contact point for handling all requests in the system. The controller may delegate to a helper to complete authentication and authorization of a user or to initiate contact retrieval.

View: A view represents and displays information to the client. The view retrieves information from a model. Helpers support views by encapsulating and adapting the underlying data model for use in the display.

Dispatcher: A dispatcher is responsible for view management and navigation, managing the choice of the next view to present to the user, and providing the mechanism for vectoring control to this resource.

Helper : A helper is responsible for helping a view or controller complete its processing. Thus, helpers have numerous responsibilities, including gathering data required by the view and storing this intermediate model, in which case the helper is sometimes referred to as a value bean.

class TeacherView 
{
    public void display()
    {
        System.out.println("Teacher View");
    }
}
  
class StudentView 
{
    public void display()
    {
        System.out.println("Student View");
    }
}
  
class Dispatching 
{
    private StudentView studentView;
    private TeacherView teacherView;
     
    public Dispatching()
    {
        studentView = new StudentView();
        teacherView = new TeacherView();
    }
  
    public void dispatch(String request)
    {
        if(request.equalsIgnoreCase("Student"))
        {
            studentView.display();
        }
        else
        {
            teacherView.display();
        }    
    }
}
  
class FrontController 
{
    private Dispatching Dispatching;
  
    public FrontController()
    {
        Dispatching = new Dispatching();
    }
  
    private boolean isAuthenticUser()
    {
        System.out.println("Authentication successful.");
        return true;
    }
  
    private void trackRequest(String request)
    {
        System.out.println("Requested View: " + request);
    }
  
    public void dispatchRequest(String request)
    {
        trackRequest(request);
        
        if(isAuthenticUser())
        {
            Dispatching.dispatch(request);
        }    
    }
}
  
class FrontControllerPattern
{
    public static void main(String[] args) 
    {
        FrontController frontController = new FrontController();
        frontController.dispatchRequest("Teacher");
        frontController.dispatchRequest("Student");
    }
}

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: front-controller java model

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Contributed on Mar 01 2023

Pragya Keshap

0 Answers Avg Quality 2/10

What is Model 2 Front Controller architecture?

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