/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.server.dispatch;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
* Represents the final servlet in a filter chain.
*/
public class RedirectFilterChain implements FilterChain {
// servlet
private String _url;
private String _queryString;
/**
* Create the redirect filter chain servlet.
*
* @param url the URL to redirect to.
*/
public RedirectFilterChain(String url)
{
_url = url;
}
/**
* Create the redirect filter chain servlet.
*
* @param url the URL to redirect to.
*/
public RedirectFilterChain(String url, String queryString)
{
_url = url;
_queryString = queryString;
}
/**
* Invokes the final servlet at the end of the chain.
*
* @param request the servlet request
* @param response the servlet response
*
* @since Servlet 2.3
*/
public void doFilter(ServletRequest request,
ServletResponse response)
throws ServletException, IOException
{
HttpServletRequest req = (HttpServletRequest) request;
HttpServletResponse res = (HttpServletResponse) response;
String queryString = _queryString;
if (queryString == null)
queryString = req.getQueryString();
if (queryString != null && _url.indexOf('?') < 0)
res.sendRedirect(res.encodeURL(_url + '?' + queryString));
else
res.sendRedirect(res.encodeURL(_url));
}
}