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StorageRelationshipCursor.java
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StorageRelationshipCursor.java
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/*
* Copyright (c) 2002-2018 "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.storageengine.api;
/**
* Shared interface between the two {@link StorageRelationshipScanCursor} and {@link StorageRelationshipTraversalCursor}.
*/
public interface StorageRelationshipCursor extends RelationshipVisitor<RuntimeException>, StorageEntityCursor
{
/**
* @return reference to the relationship this cursor is placed at.
*/
long relationshipReference();
/**
* @return relationship type of the relationship this cursor is placed at.
*/
int type();
/**
* @return source node of the relationship this cursor is placed at.
*/
long sourceNodeReference();
/**
* @return target node of the relationship this cursor is placed at.
*/
long targetNodeReference();
/**
* Used to visit transaction state, for simplifying implementation of higher-level cursor that consider transaction-state.
*/
void visit( long relationshipId, int typeId, long startNodeId, long endNodeId );
}