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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  
23  import org.apache.mina.core.buffer.IoBuffer;
24  
25  
26  /**
27   * Creates <code>ByteArray</code> backed by a heap-allocated
28   * <code>IoBuffer</code>. The free method on returned
29   * <code>ByteArray</code>s is a nop.
30   * 
31   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
32   */
33  public class SimpleByteArrayFactory implements ByteArrayFactory
34  {
35      /**
36       * 
37       * Creates a new instance of SimpleByteArrayFactory.
38       *
39       */
40      public SimpleByteArrayFactory()
41      {
42          super();
43      }
44  
45  
46      /**
47       * @inheritDoc
48       */
49      public ByteArray create( int size )
50      {
51          if ( size < 0 )
52          {
53              throw new IllegalArgumentException( "Buffer size must not be negative:" + size );
54          }
55          IoBuffer bb = IoBuffer.allocate( size );
56          ByteArray ba = new BufferByteArray( bb )
57          {
58  
59              @Override
60              public void free()
61              {
62                  // Nothing to do.
63              }
64  
65          };
66          return ba;
67      }
68  
69  }