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1   /*
2    * Copyright 2013 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  
17  package io.netty.buffer;
18  
19  import java.nio.ByteBuffer;
20  
21  /**
22   * Abstract base class for {@link ByteBuf} implementations that wrap another
23   * {@link ByteBuf}.
24   */
25  public abstract class AbstractDerivedByteBuf extends AbstractByteBuf {
26  
27      protected AbstractDerivedByteBuf(int maxCapacity) {
28          super(maxCapacity);
29      }
30  
31      @Override
32      public final int refCnt() {
33          return unwrap().refCnt();
34      }
35  
36      @Override
37      public final ByteBuf retain() {
38          unwrap().retain();
39          return this;
40      }
41  
42      @Override
43      public final ByteBuf retain(int increment) {
44          unwrap().retain(increment);
45          return this;
46      }
47  
48      @Override
49      public final ByteBuf touch() {
50          unwrap().touch();
51          return this;
52      }
53  
54      @Override
55      public final ByteBuf touch(Object hint) {
56          unwrap().touch(hint);
57          return this;
58      }
59  
60      @Override
61      public final boolean release() {
62          return unwrap().release();
63      }
64  
65      @Override
66      public final boolean release(int decrement) {
67          return unwrap().release(decrement);
68      }
69  
70      @Override
71      public ByteBuffer internalNioBuffer(int index, int length) {
72          return nioBuffer(index, length);
73      }
74  
75      @Override
76      public ByteBuffer nioBuffer(int index, int length) {
77          return unwrap().nioBuffer(index, length);
78      }
79  }