001/* 002 * (C) Copyright 2006-2012 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Bogdan Stefanescu 018 * Florent Guillaume 019 */ 020package org.nuxeo.ecm.webengine.app; 021 022import java.io.IOException; 023 024import javax.servlet.Filter; 025import javax.servlet.FilterChain; 026import javax.servlet.FilterConfig; 027import javax.servlet.ServletException; 028import javax.servlet.ServletRequest; 029import javax.servlet.ServletResponse; 030import javax.servlet.http.HttpServletRequest; 031import javax.servlet.http.HttpServletResponse; 032 033import org.nuxeo.ecm.webengine.model.WebContext; 034 035/** 036 * This filter sets up the {@link WebContext}, made available through {@link WebEngine#getActiveContext}. 037 */ 038public class WebContextFilter implements Filter { 039 040 @Override 041 public void init(FilterConfig filterConfig) { 042 // nothing to do 043 } 044 045 @Override 046 public void destroy() { 047 // nothing to do 048 } 049 050 @Override 051 public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) 052 throws IOException, ServletException { 053 String name = WebContext.class.getName(); 054 request.setAttribute(name, new DefaultContext((HttpServletRequest) request, (HttpServletResponse) response)); 055 try { 056 chain.doFilter(request, response); 057 } finally { 058 request.removeAttribute(name); 059 } 060 } 061 062}