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1   //----------------------------------------------------------------------
2   // 
3   // PerfectJPattern: "Design patterns are good but components are better!" 
4   // IParameterlessSubject.java Copyright (c) 2009 Giovanni Azua Garcia
5   // bravegag@hotmail.com
6   //  
7   // This program is free software; you can redistribute it and/or
8   // modify it under the terms of the GNU General Public License
9   // as published by the Free Software Foundation; either version 3
10  // of the License, or (at your option) any later version.
11  //
12  // This program is distributed in the hope that it will be useful,
13  // but WITHOUT ANY WARRANTY; without even the implied warranty of
14  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  // GNU General Public License for more details.
16  //
17  // You should have received a copy of the GNU General Public License
18  // along with this program; if not, see <http://www.gnu.org/licenses/>.
19  //
20  //----------------------------------------------------------------------
21  package org.perfectjpattern.core.api.behavioral.observer;
22  
23  import org.perfectjpattern.core.api.behavioral.observer.data.*;
24  
25  /**
26   * {@link ISubject} whose event is not associated with any {@link IEventData}
27   * 
28   * @author <a href="mailto:bravegag@hotmail.com">Giovanni Azua</a>
29   * @version $Revision: 1.0 $Date: Feb 14, 2009 12:23:13 PM $
30   */
31  public 
32  interface IParameterlessSubject
33  extends ISubject<NullEventData>
34  {
35      //------------------------------------------------------------------------
36      // public
37      //------------------------------------------------------------------------
38      /**
39       * Notifies all subscribed {@link IObserver} instances without the need 
40       * to provide any {@link IEventData}
41       */
42      public void
43      notifyObservers();
44  }