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FusionIndexPopulator.java
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FusionIndexPopulator.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.impl.index.schema.fusion;
import java.util.ArrayList;
import java.util.Collection;
import org.neo4j.kernel.api.exceptions.index.IndexEntryConflictException;
import org.neo4j.kernel.api.index.IndexEntryUpdate;
import org.neo4j.kernel.api.index.IndexPopulator;
import org.neo4j.kernel.api.index.IndexUpdater;
import org.neo4j.kernel.impl.index.schema.IndexDropAction;
import org.neo4j.storageengine.api.NodePropertyAccessor;
import org.neo4j.storageengine.api.schema.IndexSample;
import static org.neo4j.kernel.impl.index.schema.fusion.FusionIndexSampler.combineSamples;
class FusionIndexPopulator extends FusionIndexBase<IndexPopulator> implements IndexPopulator
{
private final long indexId;
private final IndexDropAction dropAction;
private final boolean archiveFailedIndex;
FusionIndexPopulator( SlotSelector slotSelector, InstanceSelector<IndexPopulator> instanceSelector, long indexId, IndexDropAction dropAction,
boolean archiveFailedIndex )
{
super( slotSelector, instanceSelector );
this.indexId = indexId;
this.dropAction = dropAction;
this.archiveFailedIndex = archiveFailedIndex;
}
@Override
public void create()
{
dropAction.drop( indexId, archiveFailedIndex );
instanceSelector.forAll( IndexPopulator::create );
}
@Override
public void drop()
{
instanceSelector.forAll( IndexPopulator::drop );
dropAction.drop( indexId );
}
@Override
public void add( Collection<? extends IndexEntryUpdate<?>> updates ) throws IndexEntryConflictException
{
LazyInstanceSelector<Collection<IndexEntryUpdate<?>>> batchSelector = new LazyInstanceSelector<>( slot -> new ArrayList<>() );
for ( IndexEntryUpdate<?> update : updates )
{
batchSelector.select( slotSelector.selectSlot( update.values(), GROUP_OF ) ).add( update );
}
// Manual loop due do multiple exception types
for ( IndexSlot slot : IndexSlot.values() )
{
Collection<IndexEntryUpdate<?>> batch = batchSelector.getIfInstantiated( slot );
if ( batch != null )
{
this.instanceSelector.select( slot ).add( batch );
}
}
}
@Override
public void verifyDeferredConstraints( NodePropertyAccessor nodePropertyAccessor ) throws IndexEntryConflictException
{
// Manual loop due do multiple exception types
for ( IndexSlot slot : IndexSlot.values() )
{
instanceSelector.select( slot ).verifyDeferredConstraints( nodePropertyAccessor );
}
}
@Override
public IndexUpdater newPopulatingUpdater( NodePropertyAccessor accessor )
{
LazyInstanceSelector<IndexUpdater> updaterSelector =
new LazyInstanceSelector<>( slot -> instanceSelector.select( slot ).newPopulatingUpdater( accessor ) );
return new FusionIndexUpdater( slotSelector, updaterSelector );
}
@Override
public void close( boolean populationCompletedSuccessfully )
{
instanceSelector.close( populator -> populator.close( populationCompletedSuccessfully ) );
}
@Override
public void markAsFailed( String failure )
{
instanceSelector.forAll( populator -> populator.markAsFailed( failure ) );
}
@Override
public void includeSample( IndexEntryUpdate<?> update )
{
instanceSelector.select( slotSelector.selectSlot( update.values(), GROUP_OF ) ).includeSample( update );
}
@Override
public IndexSample sampleResult()
{
return combineSamples( instanceSelector.transform( IndexPopulator::sampleResult ) );
}
}