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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  }