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LabelScanReader.java
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LabelScanReader.java
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/*
* Copyright (c) 2002-2018 "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.storageengine.api.schema;
import org.neo4j.collection.primitive.PrimitiveLongResourceIterator;
import org.neo4j.graphdb.Resource;
/**
* Reader of a label scan store which contains label-->nodes mappings.
*/
public interface LabelScanReader extends Resource
{
/**
* @param labelId label token id.
* @return node ids with the given {@code labelId}.
*/
PrimitiveLongResourceIterator nodesWithLabel( int labelId );
/**
* Returns the index progressor over the label id
*
* @param client the client to communicate with
* @param labelId label token id
* @return index progressor with the given {@code labelId}
*/
IndexProgressor nodesWithLabel( IndexProgressor.NodeLabelClient client, int labelId );
/**
* @param labelIds label token ids.
* @return node ids with any of the given label ids.
*/
PrimitiveLongResourceIterator nodesWithAnyOfLabels( int... labelIds );
/**
* @param labelIds label token ids.
* @return node ids with all of the given label ids.
*/
PrimitiveLongResourceIterator nodesWithAllLabels( int... labelIds );
}