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Neo4j property value system.
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/*
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [https://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 comparator) {
var idComparison = Long.compare(id(), ((VirtualNodeValue) other).id());
return idComparison != 0
? idComparison
: Long.compare(sourceId(), ((CompositeDatabaseValue) other).sourceId());
}
@Override
protected int computeHashToMemoize() {
return 31 * Long.hashCode(id()) + Long.hashCode(sourceId);
}
}
final class CompositeDirectRelationshipValue extends RelationshipValue.DirectRelationshipValue
implements CompositeDatabaseValue {
private final long sourceId;
/**
* @param id the id of the relationship.
* @param elementId the element id of the relationship.
* @param sourceId a unique id of the constituent graph in the current transaction.
* @param startNode start node of this relationship.
* @param endNode end node of this relationship.
* @param type type name of this relationship.
* @param properties properties of this relationship
* @param isDeleted whether this node is deleted.
*/
CompositeDirectRelationshipValue(
long id,
String elementId,
long sourceId,
VirtualNodeReference startNode,
VirtualNodeReference endNode,
TextValue type,
MapValue properties,
boolean isDeleted) {
super(id, elementId, startNode, endNode, type, properties, isDeleted);
this.sourceId = sourceId;
}
@Override
public long sourceId() {
return sourceId;
}
/**
* @param other
* @return true if the entity is a relationship which has the same id and sourceId as this object, otherwise false.
*/
@Override
public boolean equals(VirtualRelationshipValue other) {
if (!super.equals(other)) {
return false;
}
if (other instanceof CompositeDatabaseValue compositeValue) {
return sourceId == compositeValue.sourceId();
} else if (other instanceof RelationshipValue relationshipValue) {
return elementId().equals(relationshipValue.elementId());
} else {
/*
* If we get here, it means we try to compare a composite relationship with a non-composite relationship, which has the same id.
* It is not possible to compare those values as they might OR might not refer to the same element.
*
* We should never get here, as we always work with either only composite or only non-composite values.
*/
throw new IncomparableValuesException(
this.getClass().getSimpleName(), other.getClass().getSimpleName());
}
}
@Override
public int unsafeCompareTo(VirtualValue other, Comparator comparator) {
var idComparison = Long.compare(id(), ((VirtualNodeValue) other).id());
return idComparison != 0
? idComparison
: Long.compare(sourceId(), ((CompositeDatabaseValue) other).sourceId());
}
@Override
protected int computeHashToMemoize() {
return 31 * Long.hashCode(id()) + Long.hashCode(sourceId);
}
}
final class CompositeFullNodeReference extends FullNodeReference implements CompositeDatabaseValue {
private final long sourceId;
/**
* @param id the id of the node.
* @param elementId the element id of the node.
* @param sourceId a unique id of the constituent graph in the current transaction.
*/
public CompositeFullNodeReference(long id, String elementId, long sourceId) {
super(id, elementId);
this.sourceId = sourceId;
}
/**
* @param other
* @return true if the entity is a node which has the same id and sourceId as this object, otherwise false.
*/
@Override
protected boolean equals(VirtualNodeValue other) {
if (!super.equals(other)) {
return false;
}
if (other instanceof CompositeDatabaseValue compositeValue) {
return sourceId == compositeValue.sourceId();
} else if (other instanceof VirtualNodeReference nodeReference) {
return elementId().equals(nodeReference.elementId());
} else {
/*
* If we get here, it means we try to compare a composite node with a non-composite node, which has the same id.
* It is not possible to compare those values as they might OR might not refer to the same element.
*
* We should never get here, as we always work with either only composite or only non-composite values.
*/
throw new IncomparableValuesException(
this.getClass().getSimpleName(), other.getClass().getSimpleName());
}
}
@Override
public int unsafeCompareTo(VirtualValue other, Comparator comparator) {
var idComparison = Long.compare(id(), ((VirtualNodeValue) other).id());
return idComparison != 0
? idComparison
: Long.compare(sourceId(), ((CompositeDatabaseValue) other).sourceId());
}
@Override
public long sourceId() {
return sourceId;
}
@Override
protected int computeHashToMemoize() {
return 31 * Long.hashCode(id()) + Long.hashCode(sourceId);
}
}
}
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