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LuceneSchemaIndexPopulationIT.java
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LuceneSchemaIndexPopulationIT.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.index;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import org.neo4j.collection.primitive.PrimitiveLongCollections;
import org.neo4j.kernel.api.exceptions.index.IndexEntryConflictException;
import org.neo4j.kernel.api.impl.schema.LuceneIndexAccessor;
import org.neo4j.kernel.api.impl.schema.LuceneSchemaIndexBuilder;
import org.neo4j.kernel.api.impl.schema.SchemaIndex;
import org.neo4j.kernel.api.index.IndexEntryUpdate;
import org.neo4j.kernel.api.index.IndexUpdater;
import org.neo4j.kernel.api.schema_new.IndexQuery;
import org.neo4j.kernel.api.schema_new.index.NewIndexDescriptor;
import org.neo4j.kernel.api.schema_new.index.NewIndexDescriptorFactory;
import org.neo4j.kernel.impl.api.index.IndexUpdateMode;
import org.neo4j.storageengine.api.schema.IndexReader;
import org.neo4j.storageengine.api.schema.IndexSample;
import org.neo4j.storageengine.api.schema.IndexSampler;
import org.neo4j.test.rule.TestDirectory;
import org.neo4j.test.rule.fs.DefaultFileSystemRule;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
@RunWith( Parameterized.class )
public class LuceneSchemaIndexPopulationIT
{
@Rule
public TestDirectory testDir = TestDirectory.testDirectory();
@Rule
public final DefaultFileSystemRule fileSystemRule = new DefaultFileSystemRule();
private int affectedNodes;
private final NewIndexDescriptor descriptor = NewIndexDescriptorFactory.uniqueForLabel( 0, 0 );
@Before
public void before() throws Exception
{
System.setProperty( "luceneSchemaIndex.maxPartitionSize", "10" );
}
@After
public void after() throws IOException
{
System.setProperty( "luceneSchemaIndex.maxPartitionSize", "" );
}
@Parameterized.Parameters( name = "{0}" )
public static List<Integer> affectedNodes()
{
return Arrays.asList( 7, 11, 14, 20, 35, 58 );
}
public LuceneSchemaIndexPopulationIT( int affectedNodes )
{
this.affectedNodes = affectedNodes;
}
@Test
public void partitionedIndexPopulation() throws Exception
{
try ( SchemaIndex uniqueIndex = LuceneSchemaIndexBuilder.create( descriptor )
.withFileSystem( fileSystemRule.get() )
.withIndexRootFolder( testDir.directory( "partitionIndex" + affectedNodes ) )
.withIndexIdentifier( "uniqueIndex" + affectedNodes )
.build() )
{
uniqueIndex.open();
// index is empty and not yet exist
assertEquals( 0, uniqueIndex.allDocumentsReader().maxCount() );
assertFalse( uniqueIndex.exists() );
try ( LuceneIndexAccessor indexAccessor = new LuceneIndexAccessor( uniqueIndex, descriptor ) )
{
generateUpdates( indexAccessor, affectedNodes );
indexAccessor.force();
// now index is online and should contain updates data
assertTrue( uniqueIndex.isOnline() );
try ( IndexReader indexReader = indexAccessor.newReader() )
{
long[] nodes = PrimitiveLongCollections.asArray( indexReader.query( IndexQuery.exists( 1 )) );
assertEquals( affectedNodes, nodes.length );
IndexSampler indexSampler = indexReader.createSampler();
IndexSample sample = indexSampler.sampleIndex();
assertEquals( affectedNodes, sample.indexSize() );
assertEquals( affectedNodes, sample.uniqueValues() );
assertEquals( affectedNodes, sample.sampleSize() );
}
}
}
}
private void generateUpdates( LuceneIndexAccessor indexAccessor, int nodesToUpdate )
throws IOException, IndexEntryConflictException
{
try ( IndexUpdater updater = indexAccessor.newUpdater( IndexUpdateMode.ONLINE ) )
{
for ( int nodeId = 0; nodeId < nodesToUpdate; nodeId++ )
{
updater.process( add( nodeId, nodeId ) );
}
}
}
private IndexEntryUpdate add( long nodeId, Object value )
{
return IndexEntryUpdate.add( nodeId, descriptor.schema(), value );
}
}