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    1   /*
    2    * Copyright 2009 Red Hat, Inc.
    3    *
    4    * Red Hat licenses this file to you under the Apache License, version 2.0
    5    * (the "License"); you may not use this file except in compliance with the
    6    * 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.buffer;
    17
    18  import java.nio.ByteOrder;
    19
    20  /**
    21   * A skeletal implementation of {@link ChannelBufferFactory}.
    22   *
    23   * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
    24   * @author <a href="http://gleamynode.net/">Trustin Lee</a>
    25   *
    26   * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
    27   */
    28  public abstract class AbstractChannelBufferFactory implements ChannelBufferFactory {
    29
    30      private final ByteOrder defaultOrder;
    31
    32      /**
    33       * Creates a new factory whose default {@link ByteOrder} is
    34       * {@link ByteOrder#BIG_ENDIAN}.
    35       */
    36      protected AbstractChannelBufferFactory() {
    37          this(ByteOrder.BIG_ENDIAN);
    38      }
    39
    40      /**
    41       * Creates a new factory with the specified default {@link ByteOrder}.
    42       *
    43       * @param defaultOrder the default {@link ByteOrder} of this factory
    44       */
    45      protected AbstractChannelBufferFactory(ByteOrder defaultOrder) {
    46          if (defaultOrder == null) {
    47              throw new NullPointerException("defaultOrder");
    48          }
    49          this.defaultOrder = defaultOrder;
    50      }
    51
    52      public ChannelBuffer getBuffer(int capacity) {
    53          return getBuffer(getDefaultOrder(), capacity);
    54      }
    55
    56      public ChannelBuffer getBuffer(byte[] array, int offset, int length) {
    57          return getBuffer(getDefaultOrder(), array, offset, length);
    58      }
    59
    60      public ByteOrder getDefaultOrder() {
    61          return defaultOrder;
    62      }
    63  }