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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License.
18   *
19   */
20  package org.apache.mina.core.future;
21  
22  import java.util.EventListener;
23  
24  import org.apache.mina.core.session.IoSession;
25  
26  /**
27   * Something interested in being notified when the completion
28   * of an asynchronous I/O operation : {@link IoFuture}. 
29   *
30   * @author The Apache MINA Project (dev@mina.apache.org)
31   * @version $Rev: 671827 $, $Date: 2008-06-26 10:49:48 +0200 (jeu, 26 jun 2008) $
32   */
33  public interface IoFutureListener<F extends IoFuture> extends EventListener {
34      /**
35       * An {@link IoFutureListener} that closes the {@link IoSession} which is
36       * associated with the specified {@link IoFuture}.
37       */
38      static IoFutureListener<IoFuture> CLOSE = new IoFutureListener<IoFuture>() {
39          public void operationComplete(IoFuture future) {
40              future.getSession().close();
41          }
42      };
43  
44      /**
45       * Invoked when the operation associated with the {@link IoFuture}
46       * has been completed even if you add the listener after the completion.
47       *
48       * @param future  The source {@link IoFuture} which called this
49       *                callback.
50       */
51      void operationComplete(F future);
52  }