/**
* Copyright (c) 2002-2011 "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 Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.channels.FileChannel;
import java.util.HashMap;
import java.util.Map;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import org.neo4j.kernel.impl.core.DefaultRelationshipTypeCreator;
import org.neo4j.kernel.impl.core.LastCommittedTxIdSetter;
import org.neo4j.kernel.impl.core.RelationshipTypeCreator;
import org.neo4j.kernel.impl.nioneo.store.FileLock;
import org.neo4j.kernel.impl.nioneo.store.FileSystemAbstraction;
import org.neo4j.kernel.impl.nioneo.store.IdGenerator;
import org.neo4j.kernel.impl.nioneo.store.IdGeneratorImpl;
import org.neo4j.kernel.impl.nioneo.store.NeoStore;
import org.neo4j.kernel.impl.transaction.LockManager;
import org.neo4j.kernel.impl.transaction.TxFinishHook;
import org.neo4j.kernel.impl.transaction.TxModule;
import org.neo4j.kernel.impl.transaction.xaframework.DefaultLogBufferFactory;
import org.neo4j.kernel.impl.transaction.xaframework.LogBufferFactory;
import org.neo4j.kernel.impl.transaction.xaframework.TxIdGenerator;
import org.neo4j.kernel.impl.transaction.xaframework.TxIdGeneratorFactory;
public class CommonFactories
{
public static LockManagerFactory defaultLockManagerFactory()
{
return new LockManagerFactory()
{
public LockManager create( TxModule txModule )
{
return new LockManager( txModule.getTxManager() );
}
};
}
public static class DefaultIdGeneratorFactory implements IdGeneratorFactory
{
private final Map<IdType, IdGenerator> generators = new HashMap<IdType, IdGenerator>();
public IdGenerator open( String fileName, int grabSize, IdType idType,
long highestIdInUse )
{
IdGenerator generator = new IdGeneratorImpl( fileName, grabSize, idType.getMaxValue() );
generators.put( idType, generator );
return generator;
}
public IdGenerator get( IdType idType )
{
return generators.get( idType );
}
public void create( String fileName )
{
IdGeneratorImpl.createGenerator( fileName );
}
public void updateIdGenerators( NeoStore neoStore )
{
neoStore.updateIdGenerators();
}
}
public static IdGeneratorFactory defaultIdGeneratorFactory()
{
return new DefaultIdGeneratorFactory();
}
public static RelationshipTypeCreator defaultRelationshipTypeCreator()
{
return new DefaultRelationshipTypeCreator();
}
public static TxIdGeneratorFactory defaultTxIdGeneratorFactory()
{
return new TxIdGeneratorFactory()
{
public TxIdGenerator create( final TransactionManager txManager )
{
return TxIdGenerator.DEFAULT;
}
};
}
public static TxFinishHook defaultTxFinishHook()
{
return new TxFinishHook()
{
public boolean hasAnyLocks( Transaction tx )
{
return false;
}
public void finishTransaction( int eventIdentifier )
{
// Do nothing from the ordinary here
}
};
}
public static LastCommittedTxIdSetter defaultLastCommittedTxIdSetter()
{
return new LastCommittedTxIdSetter()
{
public void setLastCommittedTxId( long txId )
{
// Do nothing
}
};
}
public static FileSystemAbstraction defaultFileSystemAbstraction()
{
return new FileSystemAbstraction()
{
@Override
public FileChannel open( String fileName, String mode ) throws IOException
{
return new RandomAccessFile( fileName, mode ).getChannel();
}
@Override
public FileLock tryLock( String fileName, FileChannel channel ) throws IOException
{
return FileLock.getOsSpecificFileLock( fileName, channel );
}
};
}
public static LogBufferFactory defaultLogBufferFactory( Map<?, ?> config )
{
return DefaultLogBufferFactory.create( config );
}
}