1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portal.image;
16  
17  import com.liferay.portal.kernel.image.Hook;
18  import com.liferay.portal.kernel.log.Log;
19  import com.liferay.portal.kernel.log.LogFactoryUtil;
20  import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
21  import com.liferay.portal.util.PropsValues;
22  
23  /**
24   * <a href="HookFactory.java.html"><b><i>View Source</i></b></a>
25   *
26   * @author Jorge Ferrer
27   */
28  public class HookFactory {
29  
30      public static Hook getInstance() {
31          if (_hook == null) {
32              if (_log.isDebugEnabled()) {
33                  _log.debug("Instantiate " + PropsValues.IMAGE_HOOK_IMPL);
34              }
35  
36              ClassLoader classLoader = PortalClassLoaderUtil.getClassLoader();
37  
38              try {
39                  _hook = (Hook)classLoader.loadClass(
40                      PropsValues.IMAGE_HOOK_IMPL).newInstance();
41              }
42              catch (Exception e) {
43                  _log.error(e, e);
44              }
45          }
46  
47          if (_log.isDebugEnabled()) {
48              _log.debug("Return " + _hook.getClass().getName());
49          }
50  
51          return _hook;
52      }
53  
54      public static void setInstance(Hook hook) {
55          if (_log.isDebugEnabled()) {
56              _log.debug("Set " + hook.getClass().getName());
57          }
58  
59          _hook = hook;
60      }
61  
62      private static Log _log = LogFactoryUtil.getLog(HookFactory.class);
63  
64      private static Hook _hook;
65  
66  }