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 package org.apache.myfaces.shared.view;
20
21 import java.io.IOException;
22 import java.io.OutputStream;
23
24 import javax.servlet.ServletOutputStream;
25
26 /**
27 * Delegates the standard OutputStream-methods (close, flush, write)
28 * to the given ServletOutputStream, if the ResponseSwitch is enabled
29 *
30 * @author Werner Punz (latest modification by $Author: lu4242 $)
31 * @author Jakob Korherr
32 * @version $Revision: 1151677 $ $Date: 2011-07-27 19:03:59 -0500 (Wed, 27 Jul 2011) $
33 */
34 class SwitchableOutputStream extends ServletOutputStream
35 {
36
37 OutputStream _delegate = null;
38 ResponseSwitch _responseSwitch = null;
39
40 public SwitchableOutputStream(ServletOutputStream delegate, ResponseSwitch responseSwitch)
41 {
42 _delegate = delegate;
43 _responseSwitch = responseSwitch;
44 }
45
46 @Override
47 public void close() throws IOException
48 {
49 if (_responseSwitch.isEnabled())
50 {
51 _delegate.close();
52 }
53 }
54
55 @Override
56 public void flush() throws IOException
57 {
58 if (_responseSwitch.isEnabled())
59 {
60 _delegate.flush();
61 }
62 }
63
64 @Override
65 public void write(byte[] b, int off, int len) throws IOException
66 {
67 if (_responseSwitch.isEnabled())
68 {
69 _delegate.write(b, off, len);
70 }
71 }
72
73 @Override
74 public void write(byte[] b) throws IOException
75 {
76 if (_responseSwitch.isEnabled())
77 {
78 _delegate.write(b);
79 }
80 }
81
82 @Override
83 public void write(int b) throws IOException
84 {
85 if (_responseSwitch.isEnabled())
86 {
87 _delegate.write(b);
88 }
89 }
90
91 }