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InsightIndex.java
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InsightIndex.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.kernel.api.impl.insight;
import org.apache.lucene.analysis.en.EnglishAnalyzer;
import org.apache.lucene.index.IndexWriterConfig;
import java.io.File;
import java.io.IOException;
import java.nio.file.Paths;
import org.neo4j.function.Factory;
import org.neo4j.io.fs.FileSystemAbstraction;
import org.neo4j.kernel.api.impl.index.IndexWriterConfigs;
import org.neo4j.kernel.api.impl.index.builder.LuceneIndexStorageBuilder;
import org.neo4j.kernel.api.impl.index.partition.WritableIndexPartitionFactory;
import static org.neo4j.kernel.api.impl.index.LuceneKernelExtensions.directoryFactory;
public class InsightIndex implements AutoCloseable
{
private final InsightLuceneIndex nodeIndex;
public InsightIndex( FileSystemAbstraction fileSystem, File file, String... properties ) throws IOException
{
LuceneIndexStorageBuilder storageBuilder = LuceneIndexStorageBuilder.create();
storageBuilder.withFileSystem( fileSystem ).withIndexIdentifier( "insightNodes" )
.withDirectoryFactory( directoryFactory( false, fileSystem ) )
.withIndexRootFolder( Paths.get( file.getAbsolutePath(),"insightindex" ).toFile() );
Factory<IndexWriterConfig> population = () -> IndexWriterConfigs.population( new EnglishAnalyzer() );
WritableIndexPartitionFactory partitionFactory = new WritableIndexPartitionFactory( population );
nodeIndex = new InsightLuceneIndex( storageBuilder.build(), partitionFactory, properties );
nodeIndex.open();
}
public InsightIndexTransactionEventUpdater getUpdater() throws IOException
{
WritableDatabaseInsightIndex writableDatabaseInsightIndex = new WritableDatabaseInsightIndex( nodeIndex );
return new InsightIndexTransactionEventUpdater( writableDatabaseInsightIndex );
}
public InsightIndexReader getReader() throws IOException
{
return nodeIndex.getIndexReader();
}
@Override
public void close() throws Exception {
nodeIndex.close();
}
}