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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.apache.cassandra.io.util;

public class EmptyRebufferer implements Rebufferer, RebuffererFactory
{
    private final ChannelProxy channel;

    public EmptyRebufferer(ChannelProxy channel)
    {
        this.channel = channel;
    }

    @Override
    public void close()
    {

    }

    @Override
    public ChannelProxy channel()
    {
        return channel;
    }

    @Override
    public long fileLength()
    {
        return 0;
    }

    @Override
    public double getCrcCheckChance()
    {
        return 0;
    }

    @Override
    public BufferHolder rebuffer(long position)
    {
        return EMPTY;
    }

    @Override
    public void closeReader()
    {

    }

    @Override
    public Rebufferer instantiateRebufferer()
    {
        return this;
    }
}