1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.servlet;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  
28  import java.io.Serializable;
29  
30  import javax.servlet.http.HttpSessionAttributeListener;
31  import javax.servlet.http.HttpSessionBindingEvent;
32  
33  /**
34   * <a href="SerializableSessionAttributeListener.java.html"><b><i>View Source
35   * </i></b></a>
36   *
37   * @author Bruno Farache
38   *
39   */
40  
41  public class SerializableSessionAttributeListener
42      implements HttpSessionAttributeListener {
43  
44      public void attributeAdded(HttpSessionBindingEvent event) {
45          Object obj = event.getValue();
46  
47          if (!(obj instanceof Serializable)) {
48              _log.error(
49                  obj.getClass().getName() +
50                      " is not serializable and will prevent this session from " +
51                          "being replicated");
52          }
53      }
54  
55      public void attributeRemoved(HttpSessionBindingEvent event) {
56      }
57  
58      public void attributeReplaced(HttpSessionBindingEvent event) {
59          attributeAdded(event);
60      }
61  
62      private static Log _log =
63          LogFactoryUtil.getLog(SerializableSessionAttributeListener.class);
64  
65  }