CallbackLoggerComparator


1   /**
2    * EasyBeans
3    * Copyright (C) 2006 Bull S.A.S.
4    * Contact: easybeans@objectweb.org
5    *
6    * This library is free software; you can redistribute it and/or
7    * modify it under the terms of the GNU Lesser General Public
8    * License as published by the Free Software Foundation; either
9    * version 2.1 of the License, or any later version.
10   *
11   * This library is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   * Lesser General Public License for more details.
15   *
16   * You should have received a copy of the GNU Lesser General Public
17   * License along with this library; if not, write to the Free Software
18   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
19   * USA
20   *
21   * --------------------------------------------------------------------------
22   * $Id: CallbackLoggerComparator.java 600 2006-06-08 08:37:30Z studzine $
23   * --------------------------------------------------------------------------
24   */
25  package org.objectweb.easybeans.tests.common.ejbs.stateless.containermanaged.callbacklogger;
26  
27  import java.util.Comparator  ;
28  
29  import org.objectweb.easybeans.tests.common.ejbs.entity.callbacklogger.CallbackLogger;
30  
31  
32  /**
33   * Compares two interceptor method invocation by the insertion time.
34   * @param <T> type
35   * @author Eduardo Studzinski Estima de Castro
36   * @author Gisele Pinheiro Souza
37   *
38   */
39  public class CallbackLoggerComparator <T extends CallbackLogger> implements Comparator   <CallbackLogger> {
40  
41      /**
42       * Compares the callback interceptor method invocation by insertion time.
43       * @param callback1 the first callback interceptor method.
44       * @param callback2 the second callback interceptor method.
45       * @return a negative value if the insertion time for the callback1 is less
46       *         than callback2, a positive value if the insertion time for the
47       *         callback1 is greater than callback2 and a zero if the insertion
48       *         time for the callback1 is equal to callback2.
49       */
50      public int compare(final CallbackLogger callback1, final CallbackLogger callback2) {
51          if (callback1.getInsertionDate() < callback2.getInsertionDate()) {
52              return -1;
53          } else if (callback1.getInsertionDate() > callback2.getInsertionDate()) {
54              return 1;
55          } else {
56              return 0;
57          }
58      }
59  
60  }
61
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