001 /* 002 * Copyright © 2008, 2009 Pedro Agulló Soliveres. 003 * 004 * This file is part of DirectJNgine. 005 * 006 * DirectJNgine is free software: you can redistribute it and/or modify 007 * it under the terms of the GNU Lesser General Public License as published by 008 * the Free Software Foundation, either version 3 of the License. 009 * 010 * Commercial use is permitted to the extent that the code/component(s) 011 * do NOT become part of another Open Source or Commercially developed 012 * licensed development library or toolkit without explicit permission. 013 * 014 * DirectJNgine is distributed in the hope that it will be useful, 015 * but WITHOUT ANY WARRANTY; without even the implied warranty of 016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 017 * GNU Lesser General Public License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public License 020 * along with DirectJNgine. If not, see <http://www.gnu.org/licenses/>. 021 * 022 * This software uses the ExtJs library (http://extjs.com), which is 023 * distributed under the GPL v3 license (see http://extjs.com/license). 024 */ 025 026 package com.softwarementors.extjs.djn.servlet.ssm; 027 028 import javax.servlet.http.HttpServlet; 029 import javax.servlet.http.HttpServletRequest; 030 import javax.servlet.http.HttpServletResponse; 031 032 import edu.umd.cs.findbugs.annotations.NonNull; 033 034 public class WebContextManager { 035 @NonNull private static ThreadLocal<WebContext> webContext = new ThreadLocal<WebContext>(); 036 037 public static WebContext get() { 038 assert isWebContextAttachedToCurrentThread(); 039 040 return webContext.get(); 041 } 042 043 public static void attachWebContextToCurrentThread( WebContext context ) { 044 assert context != null; 045 assert !isWebContextAttachedToCurrentThread(); 046 047 webContext.set( new WebContext(context)); 048 } 049 050 public static void detachFromCurrentThread() { 051 assert isWebContextAttachedToCurrentThread(); 052 053 WebContext context = get(); 054 webContext.set(null); 055 context.close(); 056 } 057 058 public static WebContext initializeWebContextForCurrentThread( HttpServlet servlet, HttpServletRequest request, HttpServletResponse response) { 059 assert request != null; 060 assert response != null; 061 assert servlet != null; 062 assert !isWebContextAttachedToCurrentThread(); 063 064 WebContext result = new WebContext(servlet, request, response ); 065 webContext.set( result ); 066 return result; 067 } 068 069 public static boolean isWebContextAttachedToCurrentThread() { 070 WebContext context = webContext.get(); 071 return context != null; 072 } 073 074 }