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LuceneIndexIT.java
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LuceneIndexIT.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.api.impl.index;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import org.neo4j.graphdb.ResourceIterator;
import org.neo4j.io.fs.DefaultFileSystemAbstraction;
import org.neo4j.kernel.api.exceptions.index.IndexEntryConflictException;
import org.neo4j.kernel.api.impl.index.storage.DirectoryFactory;
import org.neo4j.kernel.api.impl.index.storage.IndexStorage;
import org.neo4j.kernel.api.impl.index.storage.ShardedIndexStorage;
import org.neo4j.kernel.api.index.IndexUpdater;
import org.neo4j.kernel.api.index.NodePropertyUpdate;
import org.neo4j.kernel.impl.api.index.IndexUpdateMode;
import org.neo4j.test.TargetDirectory;
import static java.util.Arrays.asList;
import static org.hamcrest.core.IsEqual.equalTo;
import static org.junit.Assert.assertThat;
import static org.neo4j.helpers.collection.IteratorUtil.asSet;
import static org.neo4j.helpers.collection.IteratorUtil.asUniqueSet;
import static org.neo4j.helpers.collection.IteratorUtil.emptySetOf;
import static org.neo4j.kernel.api.impl.index.IndexWriterFactories.standard;
public class LuceneIndexIT
{
private final long nodeId = 1, nodeId2 = 2;
private final Object value = "value";
private final LuceneDocumentStructure documentLogic = new LuceneDocumentStructure();
private LuceneIndexAccessor accessor;
@Rule
public TargetDirectory.TestDirectory testDir = TargetDirectory.testDirForTest( getClass() );
private IndexStorage indexStorage;
@Before
public void before() throws Exception
{
indexStorage = new ShardedIndexStorage( DirectoryFactory.PERSISTENT, new DefaultFileSystemAbstraction(),
testDir.directory(), 1 );
indexStorage.prepareIndexStorage();
accessor = new NonUniqueLuceneIndexAccessor( documentLogic, standard(), indexStorage, 100_000 );
}
@After
public void after() throws IOException
{
accessor.close();
indexStorage.close();
}
@Test
public void shouldProvideStoreSnapshot() throws Exception
{
// Given
updateAndCommit( asList(
add( nodeId, value ),
add( nodeId2, value ) ) );
accessor.force();
// When & Then
try ( ResourceIterator<File> snapshot = accessor.snapshotFiles() )
{
assertThat( asUniqueSetOfNames( snapshot ), equalTo( asSet( "_0.cfe", "_0.cfs", "_0.si", "segments_1" ) ) );
}
}
@Test
public void shouldProvideStoreSnapshotWhenThereAreNoCommits() throws Exception
{
// Given
// A completely un-used index
// When & Then
try(ResourceIterator<File> snapshot = accessor.snapshotFiles())
{
assertThat( asUniqueSetOfNames( snapshot ), equalTo( emptySetOf( String.class ) ) );
}
}
private Set<String> asUniqueSetOfNames( ResourceIterator<File> files )
{
ArrayList<String> out = new ArrayList<>();
while(files.hasNext())
out.add( files.next().getName() );
return asUniqueSet( out );
}
private NodePropertyUpdate add( long nodeId, Object value )
{
return NodePropertyUpdate.add( nodeId, 0, value, new long[0] );
}
private void updateAndCommit( List<NodePropertyUpdate> nodePropertyUpdates )
throws IOException, IndexEntryConflictException
{
try ( IndexUpdater updater = accessor.newUpdater( IndexUpdateMode.ONLINE ) )
{
for ( NodePropertyUpdate update : nodePropertyUpdates )
{
updater.process( update );
}
}
}
}