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.mail.util;
16  
17  import com.liferay.portal.kernel.log.Log;
18  import com.liferay.portal.kernel.log.LogFactoryUtil;
19  import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
20  import com.liferay.portal.util.PropsValues;
21  
22  /**
23   * <a href="HookFactory.java.html"><b><i>View Source</i></b></a>
24   *
25   * @author Brian Wing Shun Chan
26   */
27  public class HookFactory {
28  
29      public static Hook getInstance() {
30          if (_hook == null) {
31              if (_log.isDebugEnabled()) {
32                  _log.debug("Instantiate " + PropsValues.MAIL_HOOK_IMPL);
33              }
34  
35              ClassLoader classLoader = PortalClassLoaderUtil.getClassLoader();
36  
37              try {
38                  _hook = (Hook)classLoader.loadClass(
39                      PropsValues.MAIL_HOOK_IMPL).newInstance();
40              }
41              catch (Exception e) {
42                  _log.error(e, e);
43              }
44          }
45  
46          if (_log.isDebugEnabled()) {
47              _log.debug("Return " + _hook.getClass().getName());
48          }
49  
50          return _hook;
51      }
52  
53      public static void setInstance(Hook hook) {
54          if (_log.isDebugEnabled()) {
55              _log.debug("Set " + hook.getClass().getName());
56          }
57  
58          _hook = hook;
59      }
60  
61      private static Log _log = LogFactoryUtil.getLog(HookFactory.class);
62  
63      private static Hook _hook = null;
64  
65  }