001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.servlet;
016    
017    import com.liferay.portal.kernel.util.ClassLoaderUtil;
018    
019    import java.io.IOException;
020    
021    import javax.servlet.RequestDispatcher;
022    import javax.servlet.ServletContext;
023    import javax.servlet.ServletException;
024    import javax.servlet.ServletRequest;
025    import javax.servlet.ServletResponse;
026    
027    /**
028     * @author Raymond Aug??
029     */
030    public class ClassLoaderRequestDispatcherWrapper implements RequestDispatcher {
031    
032            public ClassLoaderRequestDispatcherWrapper(
033                    ServletContext servletContext, RequestDispatcher requestDispatcher) {
034    
035                    _servletContext = servletContext;
036                    _requestDispatcher = requestDispatcher;
037            }
038    
039            @Override
040            public void forward(
041                            ServletRequest servletRequest, ServletResponse servletResponse)
042                    throws IOException, ServletException {
043    
044                    doDispatch(servletRequest, servletResponse, false);
045            }
046    
047            @Override
048            public void include(
049                            ServletRequest servletRequest, ServletResponse servletResponse)
050                    throws IOException, ServletException {
051    
052                    doDispatch(servletRequest, servletResponse, true);
053            }
054    
055            protected void doDispatch(
056                            ServletRequest servletRequest, ServletResponse servletResponse,
057                            boolean include)
058                    throws IOException, ServletException {
059    
060                    ClassLoader contextClassLoader =
061                            ClassLoaderUtil.getContextClassLoader();
062    
063                    ClassLoader pluginClassLoader = _servletContext.getClassLoader();
064    
065                    try {
066                            if (pluginClassLoader == ClassLoaderUtil.getPortalClassLoader()) {
067                                    ClassLoaderUtil.setContextClassLoader(
068                                            ClassLoaderUtil.getPortalClassLoader());
069                            }
070                            else {
071                                    ClassLoaderUtil.setContextClassLoader(pluginClassLoader);
072                            }
073    
074                            if (include) {
075                                    _requestDispatcher.include(servletRequest, servletResponse);
076                            }
077                            else {
078                                    _requestDispatcher.forward(servletRequest, servletResponse);
079                            }
080                    }
081                    finally {
082                            ClassLoaderUtil.setContextClassLoader(contextClassLoader);
083                    }
084            }
085    
086            private final RequestDispatcher _requestDispatcher;
087            private final ServletContext _servletContext;
088    
089    }