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 }