1 /*
2 * Copyright 2012 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package org.jboss.netty.handler.codec.serialization;
17
18 import java.io.FilterInputStream;
19 import java.io.InputStream;
20
21 /**
22 * {@link FilterInputStream} which allows a user to change the underlying
23 * stream at any time.
24 */
25 final class SwitchableInputStream extends FilterInputStream {
26
27 /**
28 * Creates a new instance without initializing the reference to the
29 * underlying stream.
30 */
31 SwitchableInputStream() {
32 super(null);
33 }
34
35 /**
36 * Creates a new instance with the initial reference to the underlying
37 * stream.
38 */
39 void switchStream(InputStream in) {
40 this.in = in;
41 }
42 }