com.sun.faban.harness.webclient
Class Dispatcher

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          com.sun.faban.harness.webclient.Dispatcher

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

public class Dispatcher
extends HttpServlet

The dispatcher is introduced to reorganize the web interface using clean MVC interfaces. Not all of Faban is using the dispatcher just yet but will gradually over time (as it is impossible to re-write everything at once. The dispatcher will dispatch requests to controller classes with the following spec:

• The request http://site:9980/controller/my_controller/my_action will map to a call to the controller class MyController in this package and the method myAction. In the URL, we use the underbar character ('_') as the word separator. When translated to Java classes or methods, this will be mapped to capitalization of the word beginnings. The underbar is removed. A class name is capitalized, while a method name will start with lower case.
• The controller class can be any plain old Java object (POJO) with a public no-arg constructor.
• The action methods must be public methods taking two arguments of type HttpServletRequest and HttpServletResponse. There is no limit on the number of exceptions the action methods can throw.
• The action methods may be of return type void or of any other return type.
• The return value, if not null or not of void return type, is translated to a string using the Object.toString() method. The return value determines the view JSP to be invoked. Sensibly, any CharSequence type would make a good return type.

Author:

Akara Sucharitakul

See Also:

Serialized Form

Constructor Summary

Dispatcher()

Method Summary

protected void	doGet(HttpServletRequest request, HttpServletResponse response)
protected void	doPost(HttpServletRequest request, HttpServletResponse response)
void	init(ServletConfig config)

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Dispatcher

public Dispatcher()

Method Detail

init

public void init(ServletConfig config)
          throws ServletException

Specified by:

init in interface Servlet

Overrides:

init in class GenericServlet

Throws:

ServletException

doGet

protected void doGet(HttpServletRequest request,
                     HttpServletResponse response)
              throws ServletException,
                     IOException

Overrides:

doGet in class HttpServlet

Throws:

ServletException

IOException

doPost

protected void doPost(HttpServletRequest request,
                      HttpServletResponse response)
               throws ServletException,
                      IOException

Overrides:

doPost in class HttpServlet

Throws:

ServletException

IOException