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GroupReferenceEncoding.java
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GroupReferenceEncoding.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.kernel.impl.storageengine.impl.recordstorage;
import static org.neo4j.kernel.impl.store.record.AbstractBaseRecord.NO_ID;
class GroupReferenceEncoding
{
private static final long DIRECT = 0x1000_0000_0000_0000L;
/**
* Encode a relationship id as a group reference.
*/
static long encodeRelationship( long relationshipId )
{
return relationshipId | DIRECT | References.FLAG_MARKER;
}
/**
* Check whether a group reference is an encoded relationship id.
*/
static boolean isRelationship( long groupReference )
{
assert groupReference != NO_ID;
return (groupReference & References.FLAG_MASK) == DIRECT;
}
}