1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.util.servlet.filters;
24  
25  import java.io.DataOutputStream;
26  import java.io.IOException;
27  import java.io.OutputStream;
28  
29  import javax.servlet.ServletOutputStream;
30  
31  /**
32   * <a href="CacheResponseStream.java.html"><b><i>View Source</i></b></a>
33   *
34   * @author Alexander Chow
35   *
36   */
37  public class CacheResponseStream extends ServletOutputStream {
38  
39      public CacheResponseStream(OutputStream os) {
40          _dos = new DataOutputStream(os);
41      }
42  
43      public void close() throws IOException {
44          super.close();
45  
46          _closed = true;
47      }
48  
49      public boolean isClosed() {
50          return _closed;
51      }
52  
53      public void write(int b) throws IOException {
54          _dos.write(b);
55      }
56  
57      public void write(byte[] b) throws IOException {
58          _dos.write(b);
59      }
60  
61      public void write(byte[] b, int off, int len) throws IOException {
62          _dos.write(b, off, len);
63      }
64  
65      private boolean _closed;
66      private DataOutputStream _dos = null;
67  
68  }