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PrepareIdSequence.java
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PrepareIdSequence.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.unsafe.impl.batchimport.store;
import java.util.function.Function;
import java.util.function.LongFunction;
import org.neo4j.kernel.impl.store.CommonAbstractStore;
import org.neo4j.kernel.impl.store.RecordStore;
import org.neo4j.kernel.impl.store.id.IdSequence;
import org.neo4j.kernel.impl.store.record.AbstractBaseRecord;
/**
* Exists to allow {@link IdSequence} with specific behaviour relevant to import to be injected into
* {@link CommonAbstractStore#prepareForCommit(AbstractBaseRecord, IdSequence)}.
*/
public interface PrepareIdSequence<RECORD extends AbstractBaseRecord> extends Function<RecordStore<RECORD>,LongFunction<IdSequence>>
{
static <RECORD extends AbstractBaseRecord> PrepareIdSequence<RECORD> of( boolean doubleUnits )
{
return doubleUnits ? new SecondaryUnitPrepareIdSequence<>() : new StorePrepareIdSequence<>();
}
}