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RecordScanner.java
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RecordScanner.java
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/*
* Copyright (c) 2002-2017 "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.consistency.checking.full;
import org.neo4j.consistency.statistics.Statistics;
import org.neo4j.helpers.Exceptions;
import org.neo4j.helpers.collection.BoundedIterable;
import org.neo4j.helpers.progress.ProgressListener;
import org.neo4j.helpers.progress.ProgressMonitorFactory;
abstract class RecordScanner<RECORD> extends ConsistencyCheckerTask
{
protected final ProgressListener progress;
protected final BoundedIterable<RECORD> store;
protected final RecordProcessor<RECORD> processor;
private final IterableStore[] warmUpStores;
public RecordScanner( String name, Statistics statistics, int threads, BoundedIterable<RECORD> store,
ProgressMonitorFactory.MultiPartBuilder builder, RecordProcessor<RECORD> processor,
IterableStore... warmUpStores )
{
super( name, statistics, threads );
this.store = store;
this.processor = processor;
long maxCount = store.maxCount();
this.progress = maxCount == -1
? builder.progressForUnknownPart( name )
: builder.progressForPart( name, maxCount );
this.warmUpStores = warmUpStores;
}
@Override
public void run()
{
statistics.reset();
if ( warmUpStores != null )
{
for ( IterableStore store : warmUpStores )
{
store.warmUpCache();
}
}
try
{
scan();
}
finally
{
try
{
store.close();
}
catch ( Exception e )
{
progress.failed( e );
throw Exceptions.launderedException( e );
}
finally
{
processor.close();
progress.done();
}
}
statistics.print( name );
}
protected abstract void scan();
}