001    /*
002      Copyright (C) 2002 Laurent Martelli <laurent@aopsys.com>
003    
004      This program is free software; you can redistribute it and/or modify
005      it under the terms of the GNU Lesser General Public License as
006      published by the Free Software Foundation; either version 2 of the
007      License, or (at your option) any later version.
008    
009      This program is distributed in the hope that it will be useful,
010      but WITHOUT ANY WARRANTY; without even the implied warranty of
011      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012      GNU Lesser General Public License for more details.
013    
014      You should have received a copy of the GNU Lesser General Public License
015      along with this program; if not, write to the Free Software
016      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
017    
018    package org.objectweb.jac.aspects.gui.web;
019    
020    import java.util.Iterator;
021    import java.util.Map;
022    import javax.servlet.http.HttpServletRequest;
023    import org.mortbay.util.MultiMap;
024    
025    /**
026     * This class represents a multi-part HttpRequest.
027     */
028    public class MultiMapJacRequest extends AbstractJacRequest implements JacRequest {
029        MultiMap parameters;
030    
031        /**
032         * Parameters are initialized from the given map.
033         */
034        public MultiMapJacRequest(MultiMap map, HttpServletRequest servletRequest) {
035            super(servletRequest);
036            this.parameters = map;
037            readParamsFromRequest(servletRequest);
038        }
039    
040        public MultiMapJacRequest(MultiMap map, HttpServletRequest servletRequest,
041                                  JacRequest parent) {
042            this(map,servletRequest);
043            this.parent = parent;
044        }
045    
046        /**
047         * Parameters are copied from the HttpServletRequest.
048         */
049        public MultiMapJacRequest(HttpServletRequest servletRequest) {
050            super(servletRequest);
051            parameters = new MultiMap();
052            readParamsFromRequest(servletRequest);
053        }
054    
055        protected void readParamsFromRequest(HttpServletRequest servletRequest) {
056            // We must copy the parameters because HttpServletRequest
057            // objects are recycled by Jetty
058            Map servletParameters = servletRequest.getParameterMap();
059            Iterator it = servletParameters.keySet().iterator();
060            while(it.hasNext()) {
061                String name = (String)it.next();
062                String[] values = (String[])servletParameters.get(name);
063                parameters.putValues(name,values);
064            }
065        }
066    
067        public boolean contains(String name) {
068            if (parameters.containsKey(name))
069                return true;
070            else if (parent!=null)
071                return parent.contains(name);
072            else
073                return false;
074        }
075    
076        public Object getParameter(String name) {
077            if (parameters.containsKey(name))
078                return parameters.getString(name);
079            else if (parent!=null)
080                return parent.getParameter(name);
081            else
082                return null;
083        }
084    
085        public Object[] getParameters(String name) {
086            if (parameters.containsKey(name))
087                return parameters.getValues(name).toArray(new String [0]);
088            else if (parent!=null)
089                return parent.getParameters(name);
090            else
091                return null;
092        }
093    
094        public String toString() {
095            return parameters.toString();
096        }
097        
098    }