/*

  * $Source$

  * $Revision$

  *

  * Copyright (C) 2000 William Chesters

  *

  * Part of Melati (http://melati.org), a framework for the rapid

  * development of clean, maintainable web applications.

  *

  * Melati is free software; Permission is granted to copy, distribute

  * and/or modify this software under the terms either:

  *

  * a) 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,

  *

  *    or

  *

  * b) any version of the Melati Software License, as published

  *    at http://melati.org

  *

  * You should have received a copy of the GNU General Public License and

  * the Melati Software License along with this program;

  * if not, write to the Free Software Foundation, Inc.,

  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the

  * GNU General Public License and visit http://melati.org to obtain the

  * Melati Software License.

  *

  * Feel free to contact the Developers of Melati (http://melati.org),

  * if you would like to work out a different arrangement than the options

  * outlined here.  It is our intention to allow Melati to be used by as

  * wide an audience as possible.

  *

  * This program 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.  See the

  * GNU General Public License for more details.

  *

  * Contact details for copyright holder:

  *

  *     William Chesters <williamc At paneris.org>

  *     http://paneris.org/~williamc

  *     Obrechtstraat 114, 2517VX Den Haag, The Netherlands

  */

 package org.melati.util;

 import java.util.Enumeration;

 import java.util.Hashtable;

 import javax.servlet.http.HttpSession;

 import javax.servlet.http.HttpServletRequest;

 /**

  * The parameters of an Http Servlet Request.

  */

 public class HttpServletRequestParameters {

   final Hashtable<String,Object> parameters;

   final String requestURL;

   final String queryString;

   final String method;

   final String sessionID;

   /**

    * Constructor.

    * @param request to extract parameters from

    */

   @SuppressWarnings("unchecked")

   public HttpServletRequestParameters(HttpServletRequest request) {

     parameters = new Hashtable<String,Object> ();

     for (Enumeration<String> p = request.getParameterNames();

          p.hasMoreElements();) {

       String name = (String)p.nextElement();

       parameters.put(name, request.getParameterValues(name));

     }

     requestURL = HttpUtil.getRelativeRequestURL(request);

     queryString = request.getQueryString();

     method = request.getMethod();

     HttpSession session = request.getSession(true);

     sessionID = session == null ? null : session.getId();

   }

   /**

    * @return the extracted parameters

    */

   public Hashtable<String, Object> getParameters() {

     return parameters;

   }

   /**

    * @return URL String 

    */

   public String continuationURL() {

     return

         requestURL +

         (method.equals("PUT") || queryString == null ? "" : "?" + queryString);

   }

 }