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Neo4j kernel is a lightweight, embedded Java database designed to store data structured as graphs rather than tables. For more information, see http://neo4j.org.

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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see .
 */
package org.neo4j.kernel.api.database.transaction;

import org.neo4j.io.fs.StoreChannel;

public class LogChannel implements AutoCloseable
{
    private final long startTxId;
    private final StoreChannel channel;
    private final long endOffset;
    private final long lastTxId;

    public LogChannel( long startTxId, StoreChannel channel, long endOffset, long lastTxId )
    {
        this.startTxId = startTxId;
        this.channel = channel;
        this.endOffset = endOffset;
        this.lastTxId = lastTxId;
    }

    public long getStartTxId()
    {
        return startTxId;
    }

    public StoreChannel getChannel()
    {
        return channel;
    }

    public long getLastTxId()
    {
        return lastTxId;
    }

    /**
     * @return a known transaction-ending aligned offset for this channel.
     */
    public long getEndOffset()
    {
        return endOffset;
    }

    @Override
    public void close() throws Exception
    {
        channel.close();
    }
}