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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   */
20  package org.apache.mina.util.byteaccess;
21  
22  import org.apache.mina.core.buffer.IoBuffer;
23  
24  /**
25   * Creates <code>ByteArray</code> backed by a heap-allocated
26   * <code>IoBuffer</code>. The free method on returned
27   * <code>ByteArray</code>s is a nop.
28   * 
29   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
30   */
31  public class SimpleByteArrayFactory implements ByteArrayFactory {
32      /**
33       * 
34       * Creates a new instance of SimpleByteArrayFactory.
35       *
36       */
37      public SimpleByteArrayFactory() {
38          super();
39      }
40  
41      /**
42       * @inheritDoc
43       */
44      public ByteArray create(int size) {
45          if (size < 0) {
46              throw new IllegalArgumentException("Buffer size must not be negative:" + size);
47          }
48          IoBuffer bb = IoBuffer.allocate(size);
49          ByteArray ba = new BufferByteArray(bb) {
50  
51              @Override
52              public void free() {
53                  // Nothing to do.
54              }
55  
56          };
57          return ba;
58      }
59  
60  }