001    /*
002     * Copyright (C) 2012 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software 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 GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    
020    package org.crsh.util;
021    
022    import javax.servlet.ServletContext;
023    import java.util.Enumeration;
024    import java.util.Iterator;
025    
026    public class ServletContextMap extends SimpleMap<String, Object> {
027    
028      /** . */
029      private final ServletContext context;
030    
031      public ServletContextMap(ServletContext context) {
032        this.context = context;
033      }
034    
035      @Override
036      protected Iterator<String> keys() {
037        return new Iterator<String>() {
038          Enumeration<String> e = context.getAttributeNames();
039          public boolean hasNext() {
040            return e.hasMoreElements();
041          }
042          public String next() {
043            return e.nextElement();
044          }
045          public void remove() {
046            throw new UnsupportedOperationException();
047          }
048        };
049      }
050    
051      @Override
052      public Object get(Object key) {
053        if (key instanceof String) {
054          return context.getAttribute((String)key);
055        } else {
056          return null;
057        }
058      }
059    }