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LogEntryCursor.java
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LogEntryCursor.java
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/*
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.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 <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.impl.transaction.log;
import java.io.IOException;
import org.neo4j.cursor.IOCursor;
import org.neo4j.kernel.impl.transaction.log.entry.LogEntry;
import org.neo4j.kernel.impl.transaction.log.entry.LogEntryReader;
public class LogEntryCursor implements IOCursor<LogEntry>
{
private final LogEntryReader<ReadableClosablePositionAwareChannel> logEntryReader;
private final ReadableClosablePositionAwareChannel channel;
private LogEntry entry;
public LogEntryCursor( LogEntryReader<ReadableClosablePositionAwareChannel> logEntryReader,
ReadableClosablePositionAwareChannel channel )
{
this.logEntryReader = logEntryReader;
this.channel = channel;
}
@Override
public LogEntry get()
{
return entry;
}
@Override
public boolean next() throws IOException
{
entry = logEntryReader.readLogEntry( channel );
return entry != null;
}
@Override
public void close() throws IOException
{
channel.close();
}
}