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Neo4j property value system.

There is a newer version: 5.25.1

/*
 * Copyright (c) "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 .
 */
package org.neo4j.values.virtual;


import java.util.Comparator;
import java.util.function.Consumer;

import org.neo4j.values.AnyValue;
import org.neo4j.values.Comparison;
import org.neo4j.values.TernaryComparator;
import org.neo4j.values.ValueMapper;
import org.neo4j.values.VirtualValue;

public abstract class VirtualRelationshipValue extends VirtualValue
{
    public abstract long id();

    public abstract long startNodeId( Consumer consumer );

    public abstract long endNodeId( Consumer consumer );

    public final long otherNodeId( long node, Consumer consumer )
    {
        long startNodeId = startNodeId( consumer );
        return node == startNodeId ? endNodeId( consumer ) : startNodeId;
    }

    public abstract int relationshipTypeId( Consumer consumer );

    @Override
    public int unsafeCompareTo( VirtualValue other, Comparator comparator )
    {
        VirtualRelationshipValue otherNode = (VirtualRelationshipValue) other;
        return Long.compare( id(), otherNode.id() );
    }

    @Override
    public Comparison unsafeTernaryCompareTo( VirtualValue other, TernaryComparator comparator )
    {
        return Comparison.from( unsafeCompareTo( other, comparator ) );
    }

    @Override
    protected int computeHashToMemoize()
    {
        return Long.hashCode( id() );
    }

    @Override
    public  T map( ValueMapper mapper )
    {
        return mapper.mapRelationship( this );
    }

    @Override
    public boolean equals( VirtualValue other )
    {
        if ( !(other instanceof VirtualRelationshipValue) )
        {
            return false;
        }
        VirtualRelationshipValue that = (VirtualRelationshipValue) other;
        return id() == that.id();
    }

    @Override
    public VirtualValueGroup valueGroup()
    {
        return VirtualValueGroup.EDGE;
    }
}