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StoreAccess.java
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StoreAccess.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.store;
import java.io.File;
import org.neo4j.io.fs.DefaultFileSystemAbstraction;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.kernel.impl.api.CountsAccessor;
import org.neo4j.kernel.impl.logging.NullLogService;
import org.neo4j.kernel.impl.store.format.RecordFormatSelector;
import org.neo4j.kernel.impl.store.id.DefaultIdGeneratorFactory;
import org.neo4j.kernel.impl.store.record.AbstractBaseRecord;
import org.neo4j.kernel.impl.store.record.DynamicRecord;
import org.neo4j.kernel.impl.store.record.LabelTokenRecord;
import org.neo4j.kernel.impl.store.record.NodeRecord;
import org.neo4j.kernel.impl.store.record.PropertyKeyTokenRecord;
import org.neo4j.kernel.impl.store.record.PropertyRecord;
import org.neo4j.kernel.impl.store.record.RelationshipGroupRecord;
import org.neo4j.kernel.impl.store.record.RelationshipRecord;
import org.neo4j.kernel.impl.store.record.RelationshipTypeTokenRecord;
import org.neo4j.logging.NullLogProvider;
/**
* Not thread safe (since DiffRecordStore is not thread safe), intended for
* single threaded use.
*
* Make sure to call {@link #initialize()} after constructor has been run.
*/
public class StoreAccess
{
// Top level stores
private RecordStore<DynamicRecord> schemaStore;
private RecordStore<NodeRecord> nodeStore;
private RecordStore<RelationshipRecord> relStore;
private RecordStore<RelationshipTypeTokenRecord> relationshipTypeTokenStore;
private RecordStore<LabelTokenRecord> labelTokenStore;
private RecordStore<DynamicRecord> nodeDynamicLabelStore;
private RecordStore<PropertyRecord> propStore;
// Transitive stores
private RecordStore<DynamicRecord> stringStore, arrayStore;
private RecordStore<PropertyKeyTokenRecord> propertyKeyTokenStore;
private RecordStore<DynamicRecord> relationshipTypeNameStore;
private RecordStore<DynamicRecord> labelNameStore;
private RecordStore<DynamicRecord> propertyKeyNameStore;
private RecordStore<RelationshipGroupRecord> relGroupStore;
private final CountsAccessor counts;
// internal state
private boolean closeable;
private final NeoStores neoStores;
public StoreAccess( NeoStores store )
{
this.neoStores = store;
this.counts = store.getCounts();
}
public StoreAccess( PageCache pageCache, File storeDir )
{
this( new DefaultFileSystemAbstraction(), pageCache, storeDir );
}
public StoreAccess( FileSystemAbstraction fileSystem, PageCache pageCache, File storeDir )
{
this( fileSystem, pageCache, storeDir, Config.defaults() );
}
private StoreAccess( FileSystemAbstraction fileSystem, PageCache pageCache, File storeDir, Config config )
{
this( new StoreFactory( storeDir, config, new DefaultIdGeneratorFactory( fileSystem ), pageCache,
fileSystem, RecordFormatSelector.autoSelectFormat(config, NullLogService.getInstance()),
NullLogProvider.getInstance() ).openAllNeoStores() );
this.closeable = true;
}
/**
* This method exists since {@link #wrapStore(RecordStore)} might depend on the existence of a variable
* that gets set in a subclass' constructor <strong>after</strong> this constructor of {@link StoreAccess}
* has been executed. I.e. a correct creation of a {@link StoreAccess} instance must be the creation of the
* object plus a call to {@link #initialize()}.
*
* @return this
*/
public StoreAccess initialize()
{
this.schemaStore = wrapStore( neoStores.getSchemaStore() );
this.nodeStore = wrapStore( neoStores.getNodeStore() );
this.relStore = wrapStore( neoStores.getRelationshipStore() );
this.propStore = wrapStore( neoStores.getPropertyStore() );
this.stringStore = wrapStore( neoStores.getPropertyStore().getStringStore() );
this.arrayStore = wrapStore( neoStores.getPropertyStore().getArrayStore() );
this.relationshipTypeTokenStore = wrapStore( neoStores.getRelationshipTypeTokenStore() );
this.labelTokenStore = wrapStore( neoStores.getLabelTokenStore() );
this.nodeDynamicLabelStore = wrapStore( wrapNodeDynamicLabelStore( neoStores.getNodeStore().getDynamicLabelStore() ) );
this.propertyKeyTokenStore = wrapStore( neoStores.getPropertyStore().getPropertyKeyTokenStore() );
this.relationshipTypeNameStore = wrapStore( neoStores.getRelationshipTypeTokenStore().getNameStore() );
this.labelNameStore = wrapStore( neoStores.getLabelTokenStore().getNameStore() );
this.propertyKeyNameStore = wrapStore( neoStores.getPropertyStore().getPropertyKeyTokenStore().getNameStore() );
this.relGroupStore = wrapStore( neoStores.getRelationshipGroupStore() );
return this;
}
public NeoStores getRawNeoStores()
{
return neoStores;
}
public RecordStore<DynamicRecord> getSchemaStore()
{
return schemaStore;
}
public RecordStore<NodeRecord> getNodeStore()
{
return nodeStore;
}
public RecordStore<RelationshipRecord> getRelationshipStore()
{
return relStore;
}
public RecordStore<RelationshipGroupRecord> getRelationshipGroupStore()
{
return relGroupStore;
}
public RecordStore<PropertyRecord> getPropertyStore()
{
return propStore;
}
public RecordStore<DynamicRecord> getStringStore()
{
return stringStore;
}
public RecordStore<DynamicRecord> getArrayStore()
{
return arrayStore;
}
public RecordStore<RelationshipTypeTokenRecord> getRelationshipTypeTokenStore()
{
return relationshipTypeTokenStore;
}
public RecordStore<LabelTokenRecord> getLabelTokenStore()
{
return labelTokenStore;
}
public RecordStore<DynamicRecord> getNodeDynamicLabelStore()
{
return nodeDynamicLabelStore;
}
public RecordStore<PropertyKeyTokenRecord> getPropertyKeyTokenStore()
{
return propertyKeyTokenStore;
}
public RecordStore<DynamicRecord> getRelationshipTypeNameStore()
{
return relationshipTypeNameStore;
}
public RecordStore<DynamicRecord> getLabelNameStore()
{
return labelNameStore;
}
public RecordStore<DynamicRecord> getPropertyKeyNameStore()
{
return propertyKeyNameStore;
}
public CountsAccessor getCounts()
{
return counts;
}
protected RecordStore<?>[] allStores()
{
if ( propStore == null )
{
// for when the property store isn't available (e.g. because the contained data in very sensitive)
return new RecordStore<?>[]{ // no property stores
nodeStore, relStore,
relationshipTypeTokenStore, relationshipTypeNameStore,
labelTokenStore, labelNameStore, nodeDynamicLabelStore
};
}
return new RecordStore<?>[]{
schemaStore, nodeStore, relStore, propStore, stringStore, arrayStore,
relationshipTypeTokenStore, propertyKeyTokenStore, labelTokenStore,
relationshipTypeNameStore, propertyKeyNameStore, labelNameStore,
nodeDynamicLabelStore
};
}
private static RecordStore<DynamicRecord> wrapNodeDynamicLabelStore( RecordStore<DynamicRecord> store )
{
return new RecordStore.Delegator<DynamicRecord>( store )
{
@Override
public <FAILURE extends Exception> void accept( Processor<FAILURE> processor, DynamicRecord record )
throws FAILURE
{
processor.processLabelArrayWithOwner( this, record );
}
};
}
protected <R extends AbstractBaseRecord> RecordStore<R> wrapStore( RecordStore<R> store )
{
return store;
}
@SuppressWarnings("unchecked")
protected <FAILURE extends Exception> void apply( RecordStore.Processor<FAILURE> processor, RecordStore<?> store )
throws FAILURE
{
processor.applyFiltered( store );
}
public synchronized void close()
{
if ( closeable )
{
closeable = false;
neoStores.close();
}
}
}