Data-Centric Applications with Vaadin 8

Routing requests to a UI component

Using the path info part and parameters, you can already implement a mechanism that routes a request to a specific component, similarly to what a front controller does in a request/response-based framework. For example:

public class FrontController {     public static void route(VaadinRequest request, 
        SingleComponentContainer container) { 
 
        String path = request.getPathInfo(); 
 
        if ("users".equals(path)) { 
            container.setContent(new UsersComponent()); 
 
        } else if ("orders".equals(path)) { 
            container.setContent(new OrdersComponent()); 
 
        } else { ... }         
    } 
} 

And the corresponding UI implementation could look like this:

public class VaadinUI extends UI { @Override protected void init(VaadinRequest request) { FrontController. ...