001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.servlet;
016    
017    import com.liferay.portal.kernel.servlet.DynamicServletRequest;
018    import com.liferay.portal.kernel.util.CharPool;
019    import com.liferay.portal.kernel.util.StringPool;
020    import com.liferay.portal.kernel.util.StringUtil;
021    
022    import java.io.IOException;
023    
024    import java.util.HashMap;
025    import java.util.Map;
026    
027    import javax.servlet.RequestDispatcher;
028    import javax.servlet.Servlet;
029    import javax.servlet.ServletException;
030    import javax.servlet.ServletRequest;
031    import javax.servlet.ServletResponse;
032    import javax.servlet.http.HttpServletRequest;
033    
034    /**
035     * @author Shuyang Zhou
036     */
037    public class DirectRequestDispatcher implements RequestDispatcher {
038    
039            public DirectRequestDispatcher(Servlet servlet, String queryString) {
040                    _servlet = servlet;
041    
042                    String[] parameters = StringUtil.split(queryString, CharPool.AMPERSAND);
043    
044                    if (parameters.length > 0) {
045                            _parameters = new HashMap<String, String[]>();
046    
047                            for (String parameter : parameters) {
048                                    String[] parameterParts = StringUtil.split(
049                                            parameter, CharPool.EQUAL);
050    
051                                    String name = parameterParts[0];
052                                    String value = StringPool.BLANK;
053    
054                                    if (parameterParts.length == 2) {
055                                            value = parameterParts[1];
056                                    }
057    
058                                    String[] values = _parameters.get(name);
059    
060                                    if (values == null) {
061                                            _parameters.put(name, new String[] {value});
062                                    }
063                                    else {
064                                            String[] newValues = new String[values.length + 1];
065    
066                                            System.arraycopy(values, 0, newValues, 0, values.length);
067    
068                                            newValues[newValues.length - 1] = value;
069    
070                                            _parameters.put(name, newValues);
071                                    }
072                            }
073                    }
074            }
075    
076            public void forward(
077                            ServletRequest servletRequest, ServletResponse servletResponse)
078                    throws IOException, ServletException {
079    
080                    if (_parameters != null) {
081                            servletRequest = new DynamicServletRequest(
082                                    (HttpServletRequest)servletRequest, _parameters);
083                    }
084    
085                    _servlet.service(servletRequest, servletResponse);
086            }
087    
088            public void include(
089                            ServletRequest servletRequest, ServletResponse servletResponse)
090                    throws IOException, ServletException {
091    
092                    if (_parameters != null) {
093                            servletRequest = new DynamicServletRequest(
094                                    (HttpServletRequest)servletRequest, _parameters);
095                    }
096    
097                    _servlet.service(servletRequest, servletResponse);
098            }
099    
100            private Map<String, String[]> _parameters;
101            private Servlet _servlet;
102    
103    }