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1   /**
2    * This file Copyright (c) 2003-2011 Magnolia International
3    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
4    *
5    *
6    * This file is dual-licensed under both the Magnolia
7    * Network Agreement and the GNU General Public License.
8    * You may elect to use one or the other of these licenses.
9    *
10   * This file is distributed in the hope that it will be
11   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12   * implied warranty of MERCHANTABILITY or FITNESS FOR A
13   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14   * Redistribution, except as permitted by whichever of the GPL
15   * or MNA you select, is prohibited.
16   *
17   * 1. For the GPL license (GPL), you can redistribute and/or
18   * modify this file under the terms of the GNU General
19   * Public License, Version 3, as published by the Free Software
20   * Foundation.  You should have received a copy of the GNU
21   * General Public License, Version 3 along with this program;
22   * if not, write to the Free Software Foundation, Inc., 51
23   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24   *
25   * 2. For the Magnolia Network Agreement (MNA), this file
26   * and the accompanying materials are made available under the
27   * terms of the MNA which accompanies this distribution, and
28   * is available at http://www.magnolia-cms.com/mna.html
29   *
30   * Any modifications to this file must keep this entire header
31   * intact.
32   *
33   */
34  package info.magnolia.module.blossom.preexecution;
35  
36  import javax.servlet.http.HttpServletRequest;
37  import javax.servlet.http.HttpServletResponse;
38  
39  import org.springframework.web.servlet.ModelAndView;
40  import org.springframework.web.servlet.view.RedirectView;
41  
42  /**
43   * Default implementation of {@link info.magnolia.module.blossom.preexecution.DirectRenderingVoter} that considers only
44   * redirects to be eligible for direct rendering.
45   *
46   * @since 0.5
47   */
48  public class DefaultDirectRenderingVoter implements DirectRenderingVoter {
49  
50      @Override
51      public boolean renderDirectly(ModelAndView mv, HttpServletRequest request, HttpServletResponse response) throws Exception {
52  
53          // If the resulting view is a redirect then it needs to be rendered directly.
54          if (mv.hasView()) {
55              if (mv.isReference()) {
56                  if (mv.getViewName().startsWith("redirect:")) {
57                      return true;
58                  }
59              } else {
60                  if (mv.getView() instanceof RedirectView) {
61                      return true;
62                  }
63              }
64          }
65          return false;
66      }
67  }