RemoteExceptionCoordinator


1   // Copyright 2004, 2005 The Apache Software Foundation
2   //
3   // Licensed under the Apache License, Version 2.0 (the "License");
4   // you may not use this file except in compliance with the License.
5   // You may obtain a copy of the License at
6   //
7   //     http://www.apache.org/licenses/LICENSE-2.0
8   //
9   // Unless required by applicable law or agreed to in writing, software
10  // distributed under the License is distributed on an "AS IS" BASIS,
11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  // See the License for the specific language governing permissions and
13  // limitations under the License.
14  
15  package org.apache.hivemind.lib;
16  
17  /**
18   * Coordinates propogation of remote events.  
19   * Manages a list of
20   * {@link org.apache.hivemind.lib.RemoteExceptionListener} and
21   * will perform notifications on demand.  This allows
22   * objects which cache remote data to discard it after a remote exception.
23   * 
24   * <p>
25   * This service is available as
26   * <codehivemind.lib.RemoteExceptionCoordinator</code>.
27   * 
28   *
29   * @author Howard Lewis Ship
30   */
31  
32  public interface RemoteExceptionCoordinator
33  {
34      public void addRemoteExceptionListener(RemoteExceptionListener listener);
35      public void removeRemoteExceptionListener(RemoteExceptionListener listener);
36      
37      /**
38       * Invoked by an object which has caught a remote exception of some
39       * form.
40       */
41      public void fireRemoteExceptionDidOccur(Object   source, Throwable   exception);
42  }
43

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