info.fingo.web
Class ResponseCacheFilter

java.lang.Object
  info.fingo.web.ResponseCacheFilter

All Implemented Interfaces:

javax.servlet.Filter

public class ResponseCacheFilter
extends java.lang.Object
implements javax.servlet.Filter

Filter which avoid processing several identical requests coming to the server one by one. When subsequent identical request is detected, first response is sent.
It prevents double clicks at server side.

The diagram below shows how it works:

Author:

Wojtek Ganczarski - FINGO

Constructor Summary

ResponseCacheFilter()

Method Summary

void	destroy()
void	doFilter(javax.servlet.ServletRequest servletRequest, javax.servlet.ServletResponse servletResponse, javax.servlet.FilterChain chain)
void	init(javax.servlet.FilterConfig filterConfig)

Methods inherited from class java.lang.Object

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

Constructor Detail

ResponseCacheFilter

public ResponseCacheFilter()

Method Detail

init

public void init(javax.servlet.FilterConfig filterConfig)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Filter

Throws:

javax.servlet.ServletException

doFilter

public void doFilter(javax.servlet.ServletRequest servletRequest,
                     javax.servlet.ServletResponse servletResponse,
                     javax.servlet.FilterChain chain)
              throws java.io.IOException,
                     javax.servlet.ServletException

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

java.io.IOException

javax.servlet.ServletException

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter