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1   /*
2    * $Id: PortletServletRequestDispatcher.java 651946 2008-04-27 13:41:38Z apetrelli $
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  package org.apache.struts2.portlet.servlet;
23  
24  import java.io.IOException;
25  
26  import javax.portlet.PortletException;
27  import javax.portlet.PortletRequest;
28  import javax.portlet.PortletRequestDispatcher;
29  import javax.portlet.PortletResponse;
30  import javax.portlet.RenderRequest;
31  import javax.portlet.RenderResponse;
32  import javax.servlet.RequestDispatcher;
33  import javax.servlet.ServletException;
34  import javax.servlet.ServletRequest;
35  import javax.servlet.ServletResponse;
36  
37  public class PortletServletRequestDispatcher implements RequestDispatcher {
38  
39  	private PortletRequestDispatcher portletRequestDispatcher;
40  	
41  	public PortletServletRequestDispatcher(PortletRequestDispatcher portletRequestDispatcher) {
42  		this.portletRequestDispatcher = portletRequestDispatcher;
43  	}
44  
45  	public void forward(ServletRequest request, ServletResponse response) throws ServletException, IOException {
46  		throw new IllegalStateException("Not allowed in a portlet");
47  		
48  	}
49  
50  	public void include(ServletRequest request, ServletResponse response) throws ServletException, IOException {
51  		if(request instanceof PortletServletRequest && response instanceof PortletServletResponse) {
52  			PortletRequest req = ((PortletServletRequest)request).getPortletRequest();
53  			PortletResponse resp = ((PortletServletResponse)response).getPortletResponse();
54  			if(req instanceof RenderRequest && resp instanceof RenderResponse) {
55  				try {
56  					portletRequestDispatcher.include((RenderRequest)req, (RenderResponse)resp);
57  				}
58  				catch(PortletException e) {
59  					throw new ServletException(e);
60  				}
61  			}
62  			else {
63  				throw new IllegalStateException("Can only be invoked in the render phase");
64  			}
65  		}
66  		else {
67  			throw new IllegalStateException("Can only be invoked in a portlet");
68  		}
69  	}
70  
71  }