ListenerManagerComparator


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: ListenerManagerComparator.java 591 2006-06-05 14:44:15Z pinheirg $
23   * --------------------------------------------------------------------------
24   */
25  package org.objectweb.easybeans.tests.common.ejbs.stateless.containermanaged.listeners;
26  
27  import java.util.Comparator  ;
28  
29  import org.objectweb.easybeans.tests.common.ejbs.entity.callbacklogger.ListenerLogger;
30  
31  /**
32   * Compares two listeners by the insertion time.
33   * @author Gisele Pinheiro Souza
34   * @author Eduardo Studzinski Estima de Castro
35   *
36   * @param <T>
37   */
38  public class ListenerManagerComparator <T extends ListenerLogger> implements Comparator   <ListenerLogger> {
39  
40      /**
41       * Compares the listeners isertion time.
42       * @param listener1 the first listener.
43       * @param listener2 the second listener.
44       * @return a negative value if the insertion time for the listener1 is less
45       *         than listener2, a positive value if the insertion time for the
46       *         listener1 is greater than listener2 and a zero if the insertion
47       *         time for the listener1 is equal to listener2.
48       */
49      public int compare(final ListenerLogger listener1, final ListenerLogger listener2) {
50          if (listener1.getInsertionDate() < listener2.getInsertionDate()) {
51              return -1;
52          } else if (listener1.getInsertionDate() > listener2.getInsertionDate()) {
53              return 1;
54          } else {
55              return 0;
56          }
57      }
58  
59  
60  }
61
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