OutputObserver


1   // ========================================================================
2   // $Id: OutputObserver.java,v 1.3 2004/05/09 20:32:49 gregwilkins Exp $
3   // Copyright 1999-2004 Mort Bay Consulting Pty. Ltd.
4   // ------------------------------------------------------------------------
5   // Licensed under the Apache License, Version 2.0 (the "License");
6   // you may not use this file except in compliance with the License.
7   // You may obtain a copy of the License at 
8   // http://www.apache.org/licenses/LICENSE-2.0
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  
16  package org.mortbay.util;
17  
18  import java.io.IOException  ;
19  import java.io.OutputStream  ;
20  
21  /* ------------------------------------------------------------ */
22  /** Observer output events.
23   *
24   * @see org.mortbay.http.HttpOutputStream
25   * @version $Id: OutputObserver.java,v 1.3 2004/05/09 20:32:49 gregwilkins Exp $
26   * @author Greg Wilkins (gregw)
27   */
28  public interface OutputObserver
29  {
30      public final static int
31          __FIRST_WRITE=0,
32          __RESET_BUFFER=1,
33          __COMMITING=2,
34          __CLOSING=4,
35          __CLOSED=5;
36      
37      /* ------------------------------------------------------------ */
38      /** Notify an output action.
39       * @param out The OutputStream that caused the event
40       * @param action The action taken
41       * @param data Data associated with the event.
42       */
43      void outputNotify(OutputStream   out, int action, Object   data)
44          throws IOException  ;
45  }
46
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