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FulltextIndexAccessor.java
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FulltextIndexAccessor.java
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/*
* Copyright (c) 2002-2019 "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 <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.api.impl.fulltext;
import org.apache.lucene.document.Document;
import java.io.IOException;
import java.io.UncheckedIOException;
import org.neo4j.helpers.collection.BoundedIterable;
import org.neo4j.kernel.api.impl.index.AbstractLuceneIndexAccessor;
import org.neo4j.kernel.api.index.IndexUpdater;
import org.neo4j.storageengine.api.NodePropertyAccessor;
import org.neo4j.kernel.impl.api.index.IndexUpdateMode;
import org.neo4j.values.storable.Value;
import static org.neo4j.kernel.api.impl.fulltext.LuceneFulltextDocumentStructure.documentRepresentingProperties;
import static org.neo4j.kernel.api.impl.fulltext.LuceneFulltextDocumentStructure.newTermForChangeOrRemove;
public class FulltextIndexAccessor extends AbstractLuceneIndexAccessor<FulltextIndexReader,DatabaseFulltextIndex>
{
private final IndexUpdateSink indexUpdateSink;
private final FulltextIndexDescriptor descriptor;
private final Runnable onClose;
public FulltextIndexAccessor( IndexUpdateSink indexUpdateSink, DatabaseFulltextIndex luceneIndex, FulltextIndexDescriptor descriptor,
Runnable onClose )
{
super( luceneIndex, descriptor );
this.indexUpdateSink = indexUpdateSink;
this.descriptor = descriptor;
this.onClose = onClose;
}
public FulltextIndexDescriptor getDescriptor()
{
return descriptor;
}
@Override
public IndexUpdater getIndexUpdater( IndexUpdateMode mode )
{
IndexUpdater indexUpdater = new FulltextIndexUpdater( mode.requiresIdempotency(), mode.requiresRefresh() );
if ( descriptor.isEventuallyConsistent() )
{
indexUpdater = new EventuallyConsistentIndexUpdater( luceneIndex, indexUpdater, indexUpdateSink );
}
return indexUpdater;
}
@Override
public void close()
{
try
{
if ( descriptor.isEventuallyConsistent() )
{
indexUpdateSink.awaitUpdateApplication();
}
super.close();
}
finally
{
onClose.run();
}
}
@Override
public BoundedIterable<Long> newAllEntriesReader()
{
return super.newAllEntriesReader( LuceneFulltextDocumentStructure::getNodeId );
}
@Override
public void verifyDeferredConstraints( NodePropertyAccessor propertyAccessor )
{
//The fulltext index does not care about constraints.
}
public TransactionStateLuceneIndexWriter getTransactionStateIndexWriter()
{
try
{
return luceneIndex.getTransactionalIndexWriter();
}
catch ( IOException e )
{
throw new UncheckedIOException( e );
}
}
public class FulltextIndexUpdater extends AbstractLuceneIndexUpdater
{
private FulltextIndexUpdater( boolean idempotent, boolean refresh )
{
super( idempotent, refresh );
}
@Override
protected void addIdempotent( long entityId, Value[] values )
{
try
{
Document document = documentRepresentingProperties( entityId, descriptor.propertyNames(), values );
writer.updateDocument( newTermForChangeOrRemove( entityId ), document );
}
catch ( IOException e )
{
throw new UncheckedIOException( e );
}
}
@Override
public void add( long entityId, Value[] values )
{
try
{
Document document = documentRepresentingProperties( entityId, descriptor.propertyNames(), values );
writer.addDocument( document );
}
catch ( IOException e )
{
throw new UncheckedIOException( e );
}
}
@Override
protected void change( long entityId, Value[] values )
{
try
{
writer.updateDocument( newTermForChangeOrRemove( entityId ), documentRepresentingProperties( entityId, descriptor.propertyNames(), values ) );
}
catch ( IOException e )
{
throw new UncheckedIOException( e );
}
}
@Override
protected void remove( long entityId )
{
try
{
writer.deleteDocuments( newTermForChangeOrRemove( entityId ) );
}
catch ( IOException e )
{
throw new UncheckedIOException( e );
}
}
}
}