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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package org.jboss.netty.buffer;

import java.nio.ByteOrder;

/**
 * A skeletal implementation of {@link ChannelBufferFactory}.
 */
public abstract class AbstractChannelBufferFactory implements ChannelBufferFactory {

    private final ByteOrder defaultOrder;

    /**
     * Creates a new factory whose default {@link ByteOrder} is
     * {@link ByteOrder#BIG_ENDIAN}.
     */
    protected AbstractChannelBufferFactory() {
        this(ByteOrder.BIG_ENDIAN);
    }

    /**
     * Creates a new factory with the specified default {@link ByteOrder}.
     *
     * @param defaultOrder the default {@link ByteOrder} of this factory
     */
    protected AbstractChannelBufferFactory(ByteOrder defaultOrder) {
        if (defaultOrder == null) {
            throw new NullPointerException("defaultOrder");
        }
        this.defaultOrder = defaultOrder;
    }

    public ChannelBuffer getBuffer(int capacity) {
        return getBuffer(getDefaultOrder(), capacity);
    }

    public ChannelBuffer getBuffer(byte[] array, int offset, int length) {
        return getBuffer(getDefaultOrder(), array, offset, length);
    }

    public ByteOrder getDefaultOrder() {
        return defaultOrder;
    }
}