| /* |
| * Copyright (c) 2018, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| package org.eclipse.persistence.testing.models.jpa.inherited; |
| |
| import java.io.Serializable; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import jakarta.persistence.Entity; |
| import jakarta.persistence.Id; |
| |
| @Entity |
| public class NodeImpl implements Node, Serializable { |
| |
| private static final long serialVersionUID = 1L; |
| @Id |
| protected Long id; |
| protected String name; |
| |
| public NodeImpl() { |
| } |
| |
| public synchronized boolean collect(Node node, Map<Node, Set<Node>> variables) { |
| if (this == node) { |
| return true; |
| } |
| Node variable; |
| Node match; |
| if (isVariable() && node.isVariable()) { |
| return false; |
| } else if (isVariable()) { |
| variable = this; |
| match = node; |
| } else if (node.isVariable()) { |
| variable = node; |
| match = this; |
| } else { |
| return false; |
| } |
| Set<Node> matches = variables.get(variable); |
| if (match == null) { |
| matches = new HashSet<Node>(); |
| variables.put(variable, matches); |
| } |
| if (matches.contains(match)) { |
| return true; |
| } |
| matches.add(match); |
| return true; |
| } |
| |
| @Override |
| public boolean isVariable() { |
| return true; |
| } |
| |
| } |