1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.io.output;
18
19 import java.io.IOException;
20 import java.io.FilterOutputStream;
21 import java.io.OutputStream;
22
23 /**
24 * A Proxy stream which acts as expected, that is it passes the method
25 * calls on to the proxied stream and doesn't change which methods are
26 * being called. It is an alternative base class to FilterOutputStream
27 * to increase reusability.
28 *
29 * @author Stephen Colebourne
30 * @version $Id: ProxyOutputStream.java 471628 2006-11-06 04:06:45Z bayard $
31 */
32 public class ProxyOutputStream extends FilterOutputStream {
33
34 /**
35 * Constructs a new ProxyOutputStream.
36 *
37 * @param proxy the OutputStream to delegate to
38 */
39 public ProxyOutputStream(OutputStream proxy) {
40 super(proxy);
41 // the proxy is stored in a protected superclass variable named 'out'
42 }
43
44 /** @see java.io.OutputStream#write(int) */
45 public void write(int idx) throws IOException {
46 out.write(idx);
47 }
48
49 /** @see java.io.OutputStream#write(byte[]) */
50 public void write(byte[] bts) throws IOException {
51 out.write(bts);
52 }
53
54 /** @see java.io.OutputStream#write(byte[], int, int) */
55 public void write(byte[] bts, int st, int end) throws IOException {
56 out.write(bts, st, end);
57 }
58
59 /** @see java.io.OutputStream#flush() */
60 public void flush() throws IOException {
61 out.flush();
62 }
63
64 /** @see java.io.OutputStream#close() */
65 public void close() throws IOException {
66 out.close();
67 }
68
69 }