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 }