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
020package org.crsh.util;
021
022import javax.servlet.ServletContext;
023import java.util.Enumeration;
024import java.util.Iterator;
025
026public 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}